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  /***/ "./node_modules/flatpickr/dist/flatpickr.js":
  /*!**************************************************!*\
    !*** ./node_modules/flatpickr/dist/flatpickr.js ***!
    \**************************************************/
  /*! no static exports found */
  /***/ (function(module, exports, __webpack_require__) {
  
  /* flatpickr v4.6.6, @license MIT */
  (function (global, factory) {
       true ? module.exports = factory() :
      undefined;
  }(this, (function () { 'use strict';
  
      /*! *****************************************************************************
      Copyright (c) Microsoft Corporation.
  
      Permission to use, copy, modify, and/or distribute this software for any
      purpose with or without fee is hereby granted.
  
      THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
      REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
      AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
      INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
      LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
      OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
      PERFORMANCE OF THIS SOFTWARE.
      ***************************************************************************** */
  
      var __assign = function() {
          __assign = Object.assign || function __assign(t) {
              for (var s, i = 1, n = arguments.length; i < n; i++) {
                  s = arguments[i];
                  for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
              }
              return t;
          };
          return __assign.apply(this, arguments);
      };
  
      function __spreadArrays() {
          for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;
          for (var r = Array(s), k = 0, i = 0; i < il; i++)
              for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)
                  r[k] = a[j];
          return r;
      }
  
      var HOOKS = [
          "onChange",
          "onClose",
          "onDayCreate",
          "onDestroy",
          "onKeyDown",
          "onMonthChange",
          "onOpen",
          "onParseConfig",
          "onReady",
          "onValueUpdate",
          "onYearChange",
          "onPreCalendarPosition",
      ];
      var defaults = {
          _disable: [],
          _enable: [],
          allowInput: false,
          allowInvalidPreload: false,
          altFormat: "F j, Y",
          altInput: false,
          altInputClass: "form-control input",
          animate: typeof window === "object" &&
              window.navigator.userAgent.indexOf("MSIE") === -1,
          ariaDateFormat: "F j, Y",
          autoFillDefaultTime: true,
          clickOpens: true,
          closeOnSelect: true,
          conjunction: ", ",
          dateFormat: "Y-m-d",
          defaultHour: 12,
          defaultMinute: 0,
          defaultSeconds: 0,
          disable: [],
          disableMobile: false,
          enable: [],
          enableSeconds: false,
          enableTime: false,
          errorHandler: function (err) {
              return typeof console !== "undefined" && console.warn(err);
          },
          getWeek: function (givenDate) {
              var date = new Date(givenDate.getTime());
              date.setHours(0, 0, 0, 0);
              // Thursday in current week decides the year.
              date.setDate(date.getDate() + 3 - ((date.getDay() + 6) % 7));
              // January 4 is always in week 1.
              var week1 = new Date(date.getFullYear(), 0, 4);
              // Adjust to Thursday in week 1 and count number of weeks from date to week1.
              return (1 +
                  Math.round(((date.getTime() - week1.getTime()) / 86400000 -
                      3 +
                      ((week1.getDay() + 6) % 7)) /
                      7));
          },
          hourIncrement: 1,
          ignoredFocusElements: [],
          inline: false,
          locale: "default",
          minuteIncrement: 5,
          mode: "single",
          monthSelectorType: "dropdown",
          nextArrow: "<svg version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' viewBox='0 0 17 17'><g></g><path d='M13.207 8.472l-7.854 7.854-0.707-0.707 7.146-7.146-7.146-7.148 0.707-0.707 7.854 7.854z' /></svg>",
          noCalendar: false,
          now: new Date(),
          onChange: [],
          onClose: [],
          onDayCreate: [],
          onDestroy: [],
          onKeyDown: [],
          onMonthChange: [],
          onOpen: [],
          onParseConfig: [],
          onReady: [],
          onValueUpdate: [],
          onYearChange: [],
          onPreCalendarPosition: [],
          plugins: [],
          position: "auto",
          positionElement: undefined,
          prevArrow: "<svg version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' viewBox='0 0 17 17'><g></g><path d='M5.207 8.471l7.146 7.147-0.707 0.707-7.853-7.854 7.854-7.853 0.707 0.707-7.147 7.146z' /></svg>",
          shorthandCurrentMonth: false,
          showMonths: 1,
          static: false,
          time_24hr: false,
          weekNumbers: false,
          wrap: false,
      };
  
      var english = {
          weekdays: {
              shorthand: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
              longhand: [
                  "Sunday",
                  "Monday",
                  "Tuesday",
                  "Wednesday",
                  "Thursday",
                  "Friday",
                  "Saturday",
              ],
          },
          months: {
              shorthand: [
                  "Jan",
                  "Feb",
                  "Mar",
                  "Apr",
                  "May",
                  "Jun",
                  "Jul",
                  "Aug",
                  "Sep",
                  "Oct",
                  "Nov",
                  "Dec",
              ],
              longhand: [
                  "January",
                  "February",
                  "March",
                  "April",
                  "May",
                  "June",
                  "July",
                  "August",
                  "September",
                  "October",
                  "November",
                  "December",
              ],
          },
          daysInMonth: [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
          firstDayOfWeek: 0,
          ordinal: function (nth) {
              var s = nth % 100;
              if (s > 3 && s < 21)
                  return "th";
              switch (s % 10) {
                  case 1:
                      return "st";
                  case 2:
                      return "nd";
                  case 3:
                      return "rd";
                  default:
                      return "th";
              }
          },
          rangeSeparator: " to ",
          weekAbbreviation: "Wk",
          scrollTitle: "Scroll to increment",
          toggleTitle: "Click to toggle",
          amPM: ["AM", "PM"],
          yearAriaLabel: "Year",
          monthAriaLabel: "Month",
          hourAriaLabel: "Hour",
          minuteAriaLabel: "Minute",
          time_24hr: false,
      };
  
      var pad = function (number, length) {
          if (length === void 0) { length = 2; }
          return ("000" + number).slice(length * -1);
      };
      var int = function (bool) { return (bool === true ? 1 : 0); };
      /* istanbul ignore next */
      function debounce(func, wait, immediate) {
          if (immediate === void 0) { immediate = false; }
          var timeout;
          return function () {
              var context = this, args = arguments;
              timeout !== null && clearTimeout(timeout);
              timeout = window.setTimeout(function () {
                  timeout = null;
                  if (!immediate)
                      func.apply(context, args);
              }, wait);
              if (immediate && !timeout)
                  func.apply(context, args);
          };
      }
      var arrayify = function (obj) {
          return obj instanceof Array ? obj : [obj];
      };
  
      function toggleClass(elem, className, bool) {
          if (bool === true)
              return elem.classList.add(className);
          elem.classList.remove(className);
      }
      function createElement(tag, className, content) {
          var e = window.document.createElement(tag);
          className = className || "";
          content = content || "";
          e.className = className;
          if (content !== undefined)
              e.textContent = content;
          return e;
      }
      function clearNode(node) {
          while (node.firstChild)
              node.removeChild(node.firstChild);
      }
      function findParent(node, condition) {
          if (condition(node))
              return node;
          else if (node.parentNode)
              return findParent(node.parentNode, condition);
          return undefined; // nothing found
      }
      function createNumberInput(inputClassName, opts) {
          var wrapper = createElement("div", "numInputWrapper"), numInput = createElement("input", "numInput " + inputClassName), arrowUp = createElement("span", "arrowUp"), arrowDown = createElement("span", "arrowDown");
          if (navigator.userAgent.indexOf("MSIE 9.0") === -1) {
              numInput.type = "number";
          }
          else {
              numInput.type = "text";
              numInput.pattern = "\\d*";
          }
          if (opts !== undefined)
              for (var key in opts)
                  numInput.setAttribute(key, opts[key]);
          wrapper.appendChild(numInput);
          wrapper.appendChild(arrowUp);
          wrapper.appendChild(arrowDown);
          return wrapper;
      }
      function getEventTarget(event) {
          try {
              if (typeof event.composedPath === "function") {
                  var path = event.composedPath();
                  return path[0];
              }
              return event.target;
          }
          catch (error) {
              return event.target;
          }
      }
  
      var doNothing = function () { return undefined; };
      var monthToStr = function (monthNumber, shorthand, locale) { return locale.months[shorthand ? "shorthand" : "longhand"][monthNumber]; };
      var revFormat = {
          D: doNothing,
          F: function (dateObj, monthName, locale) {
              dateObj.setMonth(locale.months.longhand.indexOf(monthName));
          },
          G: function (dateObj, hour) {
              dateObj.setHours(parseFloat(hour));
          },
          H: function (dateObj, hour) {
              dateObj.setHours(parseFloat(hour));
          },
          J: function (dateObj, day) {
              dateObj.setDate(parseFloat(day));
          },
          K: function (dateObj, amPM, locale) {
              dateObj.setHours((dateObj.getHours() % 12) +
                  12 * int(new RegExp(locale.amPM[1], "i").test(amPM)));
          },
          M: function (dateObj, shortMonth, locale) {
              dateObj.setMonth(locale.months.shorthand.indexOf(shortMonth));
          },
          S: function (dateObj, seconds) {
              dateObj.setSeconds(parseFloat(seconds));
          },
          U: function (_, unixSeconds) { return new Date(parseFloat(unixSeconds) * 1000); },
          W: function (dateObj, weekNum, locale) {
              var weekNumber = parseInt(weekNum);
              var date = new Date(dateObj.getFullYear(), 0, 2 + (weekNumber - 1) * 7, 0, 0, 0, 0);
              date.setDate(date.getDate() - date.getDay() + locale.firstDayOfWeek);
              return date;
          },
          Y: function (dateObj, year) {
              dateObj.setFullYear(parseFloat(year));
          },
          Z: function (_, ISODate) { return new Date(ISODate); },
          d: function (dateObj, day) {
              dateObj.setDate(parseFloat(day));
          },
          h: function (dateObj, hour) {
              dateObj.setHours(parseFloat(hour));
          },
          i: function (dateObj, minutes) {
              dateObj.setMinutes(parseFloat(minutes));
          },
          j: function (dateObj, day) {
              dateObj.setDate(parseFloat(day));
          },
          l: doNothing,
          m: function (dateObj, month) {
              dateObj.setMonth(parseFloat(month) - 1);
          },
          n: function (dateObj, month) {
              dateObj.setMonth(parseFloat(month) - 1);
          },
          s: function (dateObj, seconds) {
              dateObj.setSeconds(parseFloat(seconds));
          },
          u: function (_, unixMillSeconds) {
              return new Date(parseFloat(unixMillSeconds));
          },
          w: doNothing,
          y: function (dateObj, year) {
              dateObj.setFullYear(2000 + parseFloat(year));
          },
      };
      var tokenRegex = {
          D: "(\\w+)",
          F: "(\\w+)",
          G: "(\\d\\d|\\d)",
          H: "(\\d\\d|\\d)",
          J: "(\\d\\d|\\d)\\w+",
          K: "",
          M: "(\\w+)",
          S: "(\\d\\d|\\d)",
          U: "(.+)",
          W: "(\\d\\d|\\d)",
          Y: "(\\d{4})",
          Z: "(.+)",
          d: "(\\d\\d|\\d)",
          h: "(\\d\\d|\\d)",
          i: "(\\d\\d|\\d)",
          j: "(\\d\\d|\\d)",
          l: "(\\w+)",
          m: "(\\d\\d|\\d)",
          n: "(\\d\\d|\\d)",
          s: "(\\d\\d|\\d)",
          u: "(.+)",
          w: "(\\d\\d|\\d)",
          y: "(\\d{2})",
      };
      var formats = {
          // get the date in UTC
          Z: function (date) { return date.toISOString(); },
          // weekday name, short, e.g. Thu
          D: function (date, locale, options) {
              return locale.weekdays.shorthand[formats.w(date, locale, options)];
          },
          // full month name e.g. January
          F: function (date, locale, options) {
              return monthToStr(formats.n(date, locale, options) - 1, false, locale);
          },
          // padded hour 1-12
          G: function (date, locale, options) {
              return pad(formats.h(date, locale, options));
          },
          // hours with leading zero e.g. 03
          H: function (date) { return pad(date.getHours()); },
          // day (1-30) with ordinal suffix e.g. 1st, 2nd
          J: function (date, locale) {
              return locale.ordinal !== undefined
                  ? date.getDate() + locale.ordinal(date.getDate())
                  : date.getDate();
          },
          // AM/PM
          K: function (date, locale) { return locale.amPM[int(date.getHours() > 11)]; },
          // shorthand month e.g. Jan, Sep, Oct, etc
          M: function (date, locale) {
              return monthToStr(date.getMonth(), true, locale);
          },
          // seconds 00-59
          S: function (date) { return pad(date.getSeconds()); },
          // unix timestamp
          U: function (date) { return date.getTime() / 1000; },
          W: function (date, _, options) {
              return options.getWeek(date);
          },
          // full year e.g. 2016, padded (0001-9999)
          Y: function (date) { return pad(date.getFullYear(), 4); },
          // day in month, padded (01-30)
          d: function (date) { return pad(date.getDate()); },
          // hour from 1-12 (am/pm)
          h: function (date) { return (date.getHours() % 12 ? date.getHours() % 12 : 12); },
          // minutes, padded with leading zero e.g. 09
          i: function (date) { return pad(date.getMinutes()); },
          // day in month (1-30)
          j: function (date) { return date.getDate(); },
          // weekday name, full, e.g. Thursday
          l: function (date, locale) {
              return locale.weekdays.longhand[date.getDay()];
          },
          // padded month number (01-12)
          m: function (date) { return pad(date.getMonth() + 1); },
          // the month number (1-12)
          n: function (date) { return date.getMonth() + 1; },
          // seconds 0-59
          s: function (date) { return date.getSeconds(); },
          // Unix Milliseconds
          u: function (date) { return date.getTime(); },
          // number of the day of the week
          w: function (date) { return date.getDay(); },
          // last two digits of year e.g. 16 for 2016
          y: function (date) { return String(date.getFullYear()).substring(2); },
      };
  
      var createDateFormatter = function (_a) {
          var _b = _a.config, config = _b === void 0 ? defaults : _b, _c = _a.l10n, l10n = _c === void 0 ? english : _c, _d = _a.isMobile, isMobile = _d === void 0 ? false : _d;
          return function (dateObj, frmt, overrideLocale) {
              var locale = overrideLocale || l10n;
              if (config.formatDate !== undefined && !isMobile) {
                  return config.formatDate(dateObj, frmt, locale);
              }
              return frmt
                  .split("")
                  .map(function (c, i, arr) {
                  return formats[c] && arr[i - 1] !== "\\"
                      ? formats[c](dateObj, locale, config)
                      : c !== "\\"
                          ? c
                          : "";
              })
                  .join("");
          };
      };
      var createDateParser = function (_a) {
          var _b = _a.config, config = _b === void 0 ? defaults : _b, _c = _a.l10n, l10n = _c === void 0 ? english : _c;
          return function (date, givenFormat, timeless, customLocale) {
              if (date !== 0 && !date)
                  return undefined;
              var locale = customLocale || l10n;
              var parsedDate;
              var dateOrig = date;
              if (date instanceof Date)
                  parsedDate = new Date(date.getTime());
              else if (typeof date !== "string" &&
                  date.toFixed !== undefined // timestamp
              )
                  // create a copy
                  parsedDate = new Date(date);
              else if (typeof date === "string") {
                  // date string
                  var format = givenFormat || (config || defaults).dateFormat;
                  var datestr = String(date).trim();
                  if (datestr === "today") {
                      parsedDate = new Date();
                      timeless = true;
                  }
                  else if (/Z$/.test(datestr) ||
                      /GMT$/.test(datestr) // datestrings w/ timezone
                  )
                      parsedDate = new Date(date);
                  else if (config && config.parseDate)
                      parsedDate = config.parseDate(date, format);
                  else {
                      parsedDate =
                          !config || !config.noCalendar
                              ? new Date(new Date().getFullYear(), 0, 1, 0, 0, 0, 0)
                              : new Date(new Date().setHours(0, 0, 0, 0));
                      var matched = void 0, ops = [];
                      for (var i = 0, matchIndex = 0, regexStr = ""; i < format.length; i++) {
                          var token_1 = format[i];
                          var isBackSlash = token_1 === "\\";
                          var escaped = format[i - 1] === "\\" || isBackSlash;
                          if (tokenRegex[token_1] && !escaped) {
                              regexStr += tokenRegex[token_1];
                              var match = new RegExp(regexStr).exec(date);
                              if (match && (matched = true)) {
                                  ops[token_1 !== "Y" ? "push" : "unshift"]({
                                      fn: revFormat[token_1],
                                      val: match[++matchIndex],
                                  });
                              }
                          }
                          else if (!isBackSlash)
                              regexStr += "."; // don't really care
                          ops.forEach(function (_a) {
                              var fn = _a.fn, val = _a.val;
                              return (parsedDate = fn(parsedDate, val, locale) || parsedDate);
                          });
                      }
                      parsedDate = matched ? parsedDate : undefined;
                  }
              }
              /* istanbul ignore next */
              if (!(parsedDate instanceof Date && !isNaN(parsedDate.getTime()))) {
                  config.errorHandler(new Error("Invalid date provided: " + dateOrig));
                  return undefined;
              }
              if (timeless === true)
                  parsedDate.setHours(0, 0, 0, 0);
              return parsedDate;
          };
      };
      /**
       * Compute the difference in dates, measured in ms
       */
      function compareDates(date1, date2, timeless) {
          if (timeless === void 0) { timeless = true; }
          if (timeless !== false) {
              return (new Date(date1.getTime()).setHours(0, 0, 0, 0) -
                  new Date(date2.getTime()).setHours(0, 0, 0, 0));
          }
          return date1.getTime() - date2.getTime();
      }
      var isBetween = function (ts, ts1, ts2) {
          return ts > Math.min(ts1, ts2) && ts < Math.max(ts1, ts2);
      };
      var duration = {
          DAY: 86400000,
      };
  
      if (typeof Object.assign !== "function") {
          Object.assign = function (target) {
              var args = [];
              for (var _i = 1; _i < arguments.length; _i++) {
                  args[_i - 1] = arguments[_i];
              }
              if (!target) {
                  throw TypeError("Cannot convert undefined or null to object");
              }
              var _loop_1 = function (source) {
                  if (source) {
                      Object.keys(source).forEach(function (key) { return (target[key] = source[key]); });
                  }
              };
              for (var _a = 0, args_1 = args; _a < args_1.length; _a++) {
                  var source = args_1[_a];
                  _loop_1(source);
              }
              return target;
          };
      }
  
      var DEBOUNCED_CHANGE_MS = 300;
      function FlatpickrInstance(element, instanceConfig) {
          var self = {
              config: __assign(__assign({}, defaults), flatpickr.defaultConfig),
              l10n: english,
          };
          self.parseDate = createDateParser({ config: self.config, l10n: self.l10n });
          self._handlers = [];
          self.pluginElements = [];
          self.loadedPlugins = [];
          self._bind = bind;
          self._setHoursFromDate = setHoursFromDate;
          self._positionCalendar = positionCalendar;
          self.changeMonth = changeMonth;
          self.changeYear = changeYear;
          self.clear = clear;
          self.close = close;
          self._createElement = createElement;
          self.destroy = destroy;
          self.isEnabled = isEnabled;
          self.jumpToDate = jumpToDate;
          self.open = open;
          self.redraw = redraw;
          self.set = set;
          self.setDate = setDate;
          self.toggle = toggle;
          function setupHelperFunctions() {
              self.utils = {
                  getDaysInMonth: function (month, yr) {
                      if (month === void 0) { month = self.currentMonth; }
                      if (yr === void 0) { yr = self.currentYear; }
                      if (month === 1 && ((yr % 4 === 0 && yr % 100 !== 0) || yr % 400 === 0))
                          return 29;
                      return self.l10n.daysInMonth[month];
                  },
              };
          }
          function init() {
              self.element = self.input = element;
              self.isOpen = false;
              parseConfig();
              setupLocale();
              setupInputs();
              setupDates();
              setupHelperFunctions();
              if (!self.isMobile)
                  build();
              bindEvents();
              if (self.selectedDates.length || self.config.noCalendar) {
                  if (self.config.enableTime) {
                      setHoursFromDate(self.config.noCalendar
                          ? self.latestSelectedDateObj || self.config.minDate
                          : undefined);
                  }
                  updateValue(false);
              }
              setCalendarWidth();
              var isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);
              /* TODO: investigate this further
          
                Currently, there is weird positioning behavior in safari causing pages
                to scroll up. https://github.com/chmln/flatpickr/issues/563
          
                However, most browsers are not Safari and positioning is expensive when used
                in scale. https://github.com/chmln/flatpickr/issues/1096
              */
              if (!self.isMobile && isSafari) {
                  positionCalendar();
              }
              triggerEvent("onReady");
          }
          function bindToInstance(fn) {
              return fn.bind(self);
          }
          function setCalendarWidth() {
              var config = self.config;
              if (config.weekNumbers === false && config.showMonths === 1) {
                  return;
              }
              else if (config.noCalendar !== true) {
                  window.requestAnimationFrame(function () {
                      if (self.calendarContainer !== undefined) {
                          self.calendarContainer.style.visibility = "hidden";
                          self.calendarContainer.style.display = "block";
                      }
                      if (self.daysContainer !== undefined) {
                          var daysWidth = (self.days.offsetWidth + 1) * config.showMonths;
                          self.daysContainer.style.width = daysWidth + "px";
                          self.calendarContainer.style.width =
                              daysWidth +
                                  (self.weekWrapper !== undefined
                                      ? self.weekWrapper.offsetWidth
                                      : 0) +
                                  "px";
                          self.calendarContainer.style.removeProperty("visibility");
                          self.calendarContainer.style.removeProperty("display");
                      }
                  });
              }
          }
          /**
           * The handler for all events targeting the time inputs
           */
          function updateTime(e) {
              if (self.selectedDates.length === 0) {
                  var defaultDate = self.config.minDate !== undefined
                      ? new Date(self.config.minDate.getTime())
                      : new Date();
                  var _a = getDefaultHours(), hours = _a.hours, minutes = _a.minutes, seconds = _a.seconds;
                  defaultDate.setHours(hours, minutes, seconds, 0);
                  self.setDate(defaultDate, false);
              }
              if (e !== undefined && e.type !== "blur") {
                  timeWrapper(e);
              }
              var prevValue = self._input.value;
              setHoursFromInputs();
              updateValue();
              if (self._input.value !== prevValue) {
                  self._debouncedChange();
              }
          }
          function ampm2military(hour, amPM) {
              return (hour % 12) + 12 * int(amPM === self.l10n.amPM[1]);
          }
          function military2ampm(hour) {
              switch (hour % 24) {
                  case 0:
                  case 12:
                      return 12;
                  default:
                      return hour % 12;
              }
          }
          /**
           * Syncs the selected date object time with user's time input
           */
          function setHoursFromInputs() {
              if (self.hourElement === undefined || self.minuteElement === undefined)
                  return;
              var hours = (parseInt(self.hourElement.value.slice(-2), 10) || 0) % 24, minutes = (parseInt(self.minuteElement.value, 10) || 0) % 60, seconds = self.secondElement !== undefined
                  ? (parseInt(self.secondElement.value, 10) || 0) % 60
                  : 0;
              if (self.amPM !== undefined) {
                  hours = ampm2military(hours, self.amPM.textContent);
              }
              var limitMinHours = self.config.minTime !== undefined ||
                  (self.config.minDate &&
                      self.minDateHasTime &&
                      self.latestSelectedDateObj &&
                      compareDates(self.latestSelectedDateObj, self.config.minDate, true) ===
                          0);
              var limitMaxHours = self.config.maxTime !== undefined ||
                  (self.config.maxDate &&
                      self.maxDateHasTime &&
                      self.latestSelectedDateObj &&
                      compareDates(self.latestSelectedDateObj, self.config.maxDate, true) ===
                          0);
              if (limitMaxHours) {
                  var maxTime = self.config.maxTime !== undefined
                      ? self.config.maxTime
                      : self.config.maxDate;
                  hours = Math.min(hours, maxTime.getHours());
                  if (hours === maxTime.getHours())
                      minutes = Math.min(minutes, maxTime.getMinutes());
                  if (minutes === maxTime.getMinutes())
                      seconds = Math.min(seconds, maxTime.getSeconds());
              }
              if (limitMinHours) {
                  var minTime = self.config.minTime !== undefined
                      ? self.config.minTime
                      : self.config.minDate;
                  hours = Math.max(hours, minTime.getHours());
                  if (hours === minTime.getHours())
                      minutes = Math.max(minutes, minTime.getMinutes());
                  if (minutes === minTime.getMinutes())
                      seconds = Math.max(seconds, minTime.getSeconds());
              }
              setHours(hours, minutes, seconds);
          }
          /**
           * Syncs time input values with a date
           */
          function setHoursFromDate(dateObj) {
              var date = dateObj || self.latestSelectedDateObj;
              if (date) {
                  setHours(date.getHours(), date.getMinutes(), date.getSeconds());
              }
          }
          function getDefaultHours() {
              var hours = self.config.defaultHour;
              var minutes = self.config.defaultMinute;
              var seconds = self.config.defaultSeconds;
              if (self.config.minDate !== undefined) {
                  var minHr = self.config.minDate.getHours();
                  var minMinutes = self.config.minDate.getMinutes();
                  hours = Math.max(hours, minHr);
                  if (hours === minHr)
                      minutes = Math.max(minMinutes, minutes);
                  if (hours === minHr && minutes === minMinutes)
                      seconds = self.config.minDate.getSeconds();
              }
              if (self.config.maxDate !== undefined) {
                  var maxHr = self.config.maxDate.getHours();
                  var maxMinutes = self.config.maxDate.getMinutes();
                  hours = Math.min(hours, maxHr);
                  if (hours === maxHr)
                      minutes = Math.min(maxMinutes, minutes);
                  if (hours === maxHr && minutes === maxMinutes)
                      seconds = self.config.maxDate.getSeconds();
              }
              return { hours: hours, minutes: minutes, seconds: seconds };
          }
          /**
           * Sets the hours, minutes, and optionally seconds
           * of the latest selected date object and the
           * corresponding time inputs
           * @param {Number} hours the hour. whether its military
           *                 or am-pm gets inferred from config
           * @param {Number} minutes the minutes
           * @param {Number} seconds the seconds (optional)
           */
          function setHours(hours, minutes, seconds) {
              if (self.latestSelectedDateObj !== undefined) {
                  self.latestSelectedDateObj.setHours(hours % 24, minutes, seconds || 0, 0);
              }
              if (!self.hourElement || !self.minuteElement || self.isMobile)
                  return;
              self.hourElement.value = pad(!self.config.time_24hr
                  ? ((12 + hours) % 12) + 12 * int(hours % 12 === 0)
                  : hours);
              self.minuteElement.value = pad(minutes);
              if (self.amPM !== undefined)
                  self.amPM.textContent = self.l10n.amPM[int(hours >= 12)];
              if (self.secondElement !== undefined)
                  self.secondElement.value = pad(seconds);
          }
          /**
           * Handles the year input and incrementing events
           * @param {Event} event the keyup or increment event
           */
          function onYearInput(event) {
              var eventTarget = getEventTarget(event);
              var year = parseInt(eventTarget.value) + (event.delta || 0);
              if (year / 1000 > 1 ||
                  (event.key === "Enter" && !/[^\d]/.test(year.toString()))) {
                  changeYear(year);
              }
          }
          /**
           * Essentially addEventListener + tracking
           * @param {Element} element the element to addEventListener to
           * @param {String} event the event name
           * @param {Function} handler the event handler
           */
          function bind(element, event, handler, options) {
              if (event instanceof Array)
                  return event.forEach(function (ev) { return bind(element, ev, handler, options); });
              if (element instanceof Array)
                  return element.forEach(function (el) { return bind(el, event, handler, options); });
              element.addEventListener(event, handler, options);
              self._handlers.push({
                  element: element,
                  event: event,
                  handler: handler,
                  options: options,
              });
          }
          function triggerChange() {
              triggerEvent("onChange");
          }
          /**
           * Adds all the necessary event listeners
           */
          function bindEvents() {
              if (self.config.wrap) {
                  ["open", "close", "toggle", "clear"].forEach(function (evt) {
                      Array.prototype.forEach.call(self.element.querySelectorAll("[data-" + evt + "]"), function (el) {
                          return bind(el, "click", self[evt]);
                      });
                  });
              }
              if (self.isMobile) {
                  setupMobile();
                  return;
              }
              var debouncedResize = debounce(onResize, 50);
              self._debouncedChange = debounce(triggerChange, DEBOUNCED_CHANGE_MS);
              if (self.daysContainer && !/iPhone|iPad|iPod/i.test(navigator.userAgent))
                  bind(self.daysContainer, "mouseover", function (e) {
                      if (self.config.mode === "range")
                          onMouseOver(getEventTarget(e));
                  });
              bind(window.document.body, "keydown", onKeyDown);
              if (!self.config.inline && !self.config.static)
                  bind(window, "resize", debouncedResize);
              if (window.ontouchstart !== undefined)
                  bind(window.document, "touchstart", documentClick);
              else
                  bind(window.document, "click", documentClick);
              bind(window.document, "focus", documentClick, { capture: true });
              if (self.config.clickOpens === true) {
                  bind(self._input, "focus", self.open);
                  bind(self._input, "click", self.open);
              }
              if (self.daysContainer !== undefined) {
                  bind(self.monthNav, "click", onMonthNavClick);
                  bind(self.monthNav, ["keyup", "increment"], onYearInput);
                  bind(self.daysContainer, "click", selectDate);
              }
              if (self.timeContainer !== undefined &&
                  self.minuteElement !== undefined &&
                  self.hourElement !== undefined) {
                  var selText = function (e) {
                      return getEventTarget(e).select();
                  };
                  bind(self.timeContainer, ["increment"], updateTime);
                  bind(self.timeContainer, "blur", updateTime, { capture: true });
                  bind(self.timeContainer, "click", timeIncrement);
                  bind([self.hourElement, self.minuteElement], ["focus", "click"], selText);
                  if (self.secondElement !== undefined)
                      bind(self.secondElement, "focus", function () { return self.secondElement && self.secondElement.select(); });
                  if (self.amPM !== undefined) {
                      bind(self.amPM, "click", function (e) {
                          updateTime(e);
                          triggerChange();
                      });
                  }
              }
              if (self.config.allowInput)
                  bind(self._input, "blur", onBlur);
          }
          /**
           * Set the calendar view to a particular date.
           * @param {Date} jumpDate the date to set the view to
           * @param {boolean} triggerChange if change events should be triggered
           */
          function jumpToDate(jumpDate, triggerChange) {
              var jumpTo = jumpDate !== undefined
                  ? self.parseDate(jumpDate)
                  : self.latestSelectedDateObj ||
                      (self.config.minDate && self.config.minDate > self.now
                          ? self.config.minDate
                          : self.config.maxDate && self.config.maxDate < self.now
                              ? self.config.maxDate
                              : self.now);
              var oldYear = self.currentYear;
              var oldMonth = self.currentMonth;
              try {
                  if (jumpTo !== undefined) {
                      self.currentYear = jumpTo.getFullYear();
                      self.currentMonth = jumpTo.getMonth();
                  }
              }
              catch (e) {
                  /* istanbul ignore next */
                  e.message = "Invalid date supplied: " + jumpTo;
                  self.config.errorHandler(e);
              }
              if (triggerChange && self.currentYear !== oldYear) {
                  triggerEvent("onYearChange");
                  buildMonthSwitch();
              }
              if (triggerChange &&
                  (self.currentYear !== oldYear || self.currentMonth !== oldMonth)) {
                  triggerEvent("onMonthChange");
              }
              self.redraw();
          }
          /**
           * The up/down arrow handler for time inputs
           * @param {Event} e the click event
           */
          function timeIncrement(e) {
              var eventTarget = getEventTarget(e);
              if (~eventTarget.className.indexOf("arrow"))
                  incrementNumInput(e, eventTarget.classList.contains("arrowUp") ? 1 : -1);
          }
          /**
           * Increments/decrements the value of input associ-
           * ated with the up/down arrow by dispatching an
           * "increment" event on the input.
           *
           * @param {Event} e the click event
           * @param {Number} delta the diff (usually 1 or -1)
           * @param {Element} inputElem the input element
           */
          function incrementNumInput(e, delta, inputElem) {
              var target = e && getEventTarget(e);
              var input = inputElem ||
                  (target && target.parentNode && target.parentNode.firstChild);
              var event = createEvent("increment");
              event.delta = delta;
              input && input.dispatchEvent(event);
          }
          function build() {
              var fragment = window.document.createDocumentFragment();
              self.calendarContainer = createElement("div", "flatpickr-calendar");
              self.calendarContainer.tabIndex = -1;
              if (!self.config.noCalendar) {
                  fragment.appendChild(buildMonthNav());
                  self.innerContainer = createElement("div", "flatpickr-innerContainer");
                  if (self.config.weekNumbers) {
                      var _a = buildWeeks(), weekWrapper = _a.weekWrapper, weekNumbers = _a.weekNumbers;
                      self.innerContainer.appendChild(weekWrapper);
                      self.weekNumbers = weekNumbers;
                      self.weekWrapper = weekWrapper;
                  }
                  self.rContainer = createElement("div", "flatpickr-rContainer");
                  self.rContainer.appendChild(buildWeekdays());
                  if (!self.daysContainer) {
                      self.daysContainer = createElement("div", "flatpickr-days");
                      self.daysContainer.tabIndex = -1;
                  }
                  buildDays();
                  self.rContainer.appendChild(self.daysContainer);
                  self.innerContainer.appendChild(self.rContainer);
                  fragment.appendChild(self.innerContainer);
              }
              if (self.config.enableTime) {
                  fragment.appendChild(buildTime());
              }
              toggleClass(self.calendarContainer, "rangeMode", self.config.mode === "range");
              toggleClass(self.calendarContainer, "animate", self.config.animate === true);
              toggleClass(self.calendarContainer, "multiMonth", self.config.showMonths > 1);
              self.calendarContainer.appendChild(fragment);
              var customAppend = self.config.appendTo !== undefined &&
                  self.config.appendTo.nodeType !== undefined;
              if (self.config.inline || self.config.static) {
                  self.calendarContainer.classList.add(self.config.inline ? "inline" : "static");
                  if (self.config.inline) {
                      if (!customAppend && self.element.parentNode)
                          self.element.parentNode.insertBefore(self.calendarContainer, self._input.nextSibling);
                      else if (self.config.appendTo !== undefined)
                          self.config.appendTo.appendChild(self.calendarContainer);
                  }
                  if (self.config.static) {
                      var wrapper = createElement("div", "flatpickr-wrapper");
                      if (self.element.parentNode)
                          self.element.parentNode.insertBefore(wrapper, self.element);
                      wrapper.appendChild(self.element);
                      if (self.altInput)
                          wrapper.appendChild(self.altInput);
                      wrapper.appendChild(self.calendarContainer);
                  }
              }
              if (!self.config.static && !self.config.inline)
                  (self.config.appendTo !== undefined
                      ? self.config.appendTo
                      : window.document.body).appendChild(self.calendarContainer);
          }
          function createDay(className, date, dayNumber, i) {
              var dateIsEnabled = isEnabled(date, true), dayElement = createElement("span", "flatpickr-day " + className, date.getDate().toString());
              dayElement.dateObj = date;
              dayElement.$i = i;
              dayElement.setAttribute("aria-label", self.formatDate(date, self.config.ariaDateFormat));
              if (className.indexOf("hidden") === -1 &&
                  compareDates(date, self.now) === 0) {
                  self.todayDateElem = dayElement;
                  dayElement.classList.add("today");
                  dayElement.setAttribute("aria-current", "date");
              }
              if (dateIsEnabled) {
                  dayElement.tabIndex = -1;
                  if (isDateSelected(date)) {
                      dayElement.classList.add("selected");
                      self.selectedDateElem = dayElement;
                      if (self.config.mode === "range") {
                          toggleClass(dayElement, "startRange", self.selectedDates[0] &&
                              compareDates(date, self.selectedDates[0], true) === 0);
                          toggleClass(dayElement, "endRange", self.selectedDates[1] &&
                              compareDates(date, self.selectedDates[1], true) === 0);
                          if (className === "nextMonthDay")
                              dayElement.classList.add("inRange");
                      }
                  }
              }
              else {
                  dayElement.classList.add("flatpickr-disabled");
              }
              if (self.config.mode === "range") {
                  if (isDateInRange(date) && !isDateSelected(date))
                      dayElement.classList.add("inRange");
              }
              if (self.weekNumbers &&
                  self.config.showMonths === 1 &&
                  className !== "prevMonthDay" &&
                  dayNumber % 7 === 1) {
                  self.weekNumbers.insertAdjacentHTML("beforeend", "<span class='flatpickr-day'>" + self.config.getWeek(date) + "</span>");
              }
              triggerEvent("onDayCreate", dayElement);
              return dayElement;
          }
          function focusOnDayElem(targetNode) {
              targetNode.focus();
              if (self.config.mode === "range")
                  onMouseOver(targetNode);
          }
          function getFirstAvailableDay(delta) {
              var startMonth = delta > 0 ? 0 : self.config.showMonths - 1;
              var endMonth = delta > 0 ? self.config.showMonths : -1;
              for (var m = startMonth; m != endMonth; m += delta) {
                  var month = self.daysContainer.children[m];
                  var startIndex = delta > 0 ? 0 : month.children.length - 1;
                  var endIndex = delta > 0 ? month.children.length : -1;
                  for (var i = startIndex; i != endIndex; i += delta) {
                      var c = month.children[i];
                      if (c.className.indexOf("hidden") === -1 && isEnabled(c.dateObj))
                          return c;
                  }
              }
              return undefined;
          }
          function getNextAvailableDay(current, delta) {
              var givenMonth = current.className.indexOf("Month") === -1
                  ? current.dateObj.getMonth()
                  : self.currentMonth;
              var endMonth = delta > 0 ? self.config.showMonths : -1;
              var loopDelta = delta > 0 ? 1 : -1;
              for (var m = givenMonth - self.currentMonth; m != endMonth; m += loopDelta) {
                  var month = self.daysContainer.children[m];
                  var startIndex = givenMonth - self.currentMonth === m
                      ? current.$i + delta
                      : delta < 0
                          ? month.children.length - 1
                          : 0;
                  var numMonthDays = month.children.length;
                  for (var i = startIndex; i >= 0 && i < numMonthDays && i != (delta > 0 ? numMonthDays : -1); i += loopDelta) {
                      var c = month.children[i];
                      if (c.className.indexOf("hidden") === -1 &&
                          isEnabled(c.dateObj) &&
                          Math.abs(current.$i - i) >= Math.abs(delta))
                          return focusOnDayElem(c);
                  }
              }
              self.changeMonth(loopDelta);
              focusOnDay(getFirstAvailableDay(loopDelta), 0);
              return undefined;
          }
          function focusOnDay(current, offset) {
              var dayFocused = isInView(document.activeElement || document.body);
              var startElem = current !== undefined
                  ? current
                  : dayFocused
                      ? document.activeElement
                      : self.selectedDateElem !== undefined && isInView(self.selectedDateElem)
                          ? self.selectedDateElem
                          : self.todayDateElem !== undefined && isInView(self.todayDateElem)
                              ? self.todayDateElem
                              : getFirstAvailableDay(offset > 0 ? 1 : -1);
              if (startElem === undefined) {
                  self._input.focus();
              }
              else if (!dayFocused) {
                  focusOnDayElem(startElem);
              }
              else {
                  getNextAvailableDay(startElem, offset);
              }
          }
          function buildMonthDays(year, month) {
              var firstOfMonth = (new Date(year, month, 1).getDay() - self.l10n.firstDayOfWeek + 7) % 7;
              var prevMonthDays = self.utils.getDaysInMonth((month - 1 + 12) % 12, year);
              var daysInMonth = self.utils.getDaysInMonth(month, year), days = window.document.createDocumentFragment(), isMultiMonth = self.config.showMonths > 1, prevMonthDayClass = isMultiMonth ? "prevMonthDay hidden" : "prevMonthDay", nextMonthDayClass = isMultiMonth ? "nextMonthDay hidden" : "nextMonthDay";
              var dayNumber = prevMonthDays + 1 - firstOfMonth, dayIndex = 0;
              // prepend days from the ending of previous month
              for (; dayNumber <= prevMonthDays; dayNumber++, dayIndex++) {
                  days.appendChild(createDay(prevMonthDayClass, new Date(year, month - 1, dayNumber), dayNumber, dayIndex));
              }
              // Start at 1 since there is no 0th day
              for (dayNumber = 1; dayNumber <= daysInMonth; dayNumber++, dayIndex++) {
                  days.appendChild(createDay("", new Date(year, month, dayNumber), dayNumber, dayIndex));
              }
              // append days from the next month
              for (var dayNum = daysInMonth + 1; dayNum <= 42 - firstOfMonth &&
                  (self.config.showMonths === 1 || dayIndex % 7 !== 0); dayNum++, dayIndex++) {
                  days.appendChild(createDay(nextMonthDayClass, new Date(year, month + 1, dayNum % daysInMonth), dayNum, dayIndex));
              }
              //updateNavigationCurrentMonth();
              var dayContainer = createElement("div", "dayContainer");
              dayContainer.appendChild(days);
              return dayContainer;
          }
          function buildDays() {
              if (self.daysContainer === undefined) {
                  return;
              }
              clearNode(self.daysContainer);
              // TODO: week numbers for each month
              if (self.weekNumbers)
                  clearNode(self.weekNumbers);
              var frag = document.createDocumentFragment();
              for (var i = 0; i < self.config.showMonths; i++) {
                  var d = new Date(self.currentYear, self.currentMonth, 1);
                  d.setMonth(self.currentMonth + i);
                  frag.appendChild(buildMonthDays(d.getFullYear(), d.getMonth()));
              }
              self.daysContainer.appendChild(frag);
              self.days = self.daysContainer.firstChild;
              if (self.config.mode === "range" && self.selectedDates.length === 1) {
                  onMouseOver();
              }
          }
          function buildMonthSwitch() {
              if (self.config.showMonths > 1 ||
                  self.config.monthSelectorType !== "dropdown")
                  return;
              var shouldBuildMonth = function (month) {
                  if (self.config.minDate !== undefined &&
                      self.currentYear === self.config.minDate.getFullYear() &&
                      month < self.config.minDate.getMonth()) {
                      return false;
                  }
                  return !(self.config.maxDate !== undefined &&
                      self.currentYear === self.config.maxDate.getFullYear() &&
                      month > self.config.maxDate.getMonth());
              };
              self.monthsDropdownContainer.tabIndex = -1;
              self.monthsDropdownContainer.innerHTML = "";
              for (var i = 0; i < 12; i++) {
                  if (!shouldBuildMonth(i))
                      continue;
                  var month = createElement("option", "flatpickr-monthDropdown-month");
                  month.value = new Date(self.currentYear, i).getMonth().toString();
                  month.textContent = monthToStr(i, self.config.shorthandCurrentMonth, self.l10n);
                  month.tabIndex = -1;
                  if (self.currentMonth === i) {
                      month.selected = true;
                  }
                  self.monthsDropdownContainer.appendChild(month);
              }
          }
          function buildMonth() {
              var container = createElement("div", "flatpickr-month");
              var monthNavFragment = window.document.createDocumentFragment();
              var monthElement;
              if (self.config.showMonths > 1 ||
                  self.config.monthSelectorType === "static") {
                  monthElement = createElement("span", "cur-month");
              }
              else {
                  self.monthsDropdownContainer = createElement("select", "flatpickr-monthDropdown-months");
                  self.monthsDropdownContainer.setAttribute("aria-label", self.l10n.monthAriaLabel);
                  bind(self.monthsDropdownContainer, "change", function (e) {
                      var target = getEventTarget(e);
                      var selectedMonth = parseInt(target.value, 10);
                      self.changeMonth(selectedMonth - self.currentMonth);
                      triggerEvent("onMonthChange");
                  });
                  buildMonthSwitch();
                  monthElement = self.monthsDropdownContainer;
              }
              var yearInput = createNumberInput("cur-year", { tabindex: "-1" });
              var yearElement = yearInput.getElementsByTagName("input")[0];
              yearElement.setAttribute("aria-label", self.l10n.yearAriaLabel);
              if (self.config.minDate) {
                  yearElement.setAttribute("min", self.config.minDate.getFullYear().toString());
              }
              if (self.config.maxDate) {
                  yearElement.setAttribute("max", self.config.maxDate.getFullYear().toString());
                  yearElement.disabled =
                      !!self.config.minDate &&
                          self.config.minDate.getFullYear() === self.config.maxDate.getFullYear();
              }
              var currentMonth = createElement("div", "flatpickr-current-month");
              currentMonth.appendChild(monthElement);
              currentMonth.appendChild(yearInput);
              monthNavFragment.appendChild(currentMonth);
              container.appendChild(monthNavFragment);
              return {
                  container: container,
                  yearElement: yearElement,
                  monthElement: monthElement,
              };
          }
          function buildMonths() {
              clearNode(self.monthNav);
              self.monthNav.appendChild(self.prevMonthNav);
              if (self.config.showMonths) {
                  self.yearElements = [];
                  self.monthElements = [];
              }
              for (var m = self.config.showMonths; m--;) {
                  var month = buildMonth();
                  self.yearElements.push(month.yearElement);
                  self.monthElements.push(month.monthElement);
                  self.monthNav.appendChild(month.container);
              }
              self.monthNav.appendChild(self.nextMonthNav);
          }
          function buildMonthNav() {
              self.monthNav = createElement("div", "flatpickr-months");
              self.yearElements = [];
              self.monthElements = [];
              self.prevMonthNav = createElement("span", "flatpickr-prev-month");
              self.prevMonthNav.innerHTML = self.config.prevArrow;
              self.nextMonthNav = createElement("span", "flatpickr-next-month");
              self.nextMonthNav.innerHTML = self.config.nextArrow;
              buildMonths();
              Object.defineProperty(self, "_hidePrevMonthArrow", {
                  get: function () { return self.__hidePrevMonthArrow; },
                  set: function (bool) {
                      if (self.__hidePrevMonthArrow !== bool) {
                          toggleClass(self.prevMonthNav, "flatpickr-disabled", bool);
                          self.__hidePrevMonthArrow = bool;
                      }
                  },
              });
              Object.defineProperty(self, "_hideNextMonthArrow", {
                  get: function () { return self.__hideNextMonthArrow; },
                  set: function (bool) {
                      if (self.__hideNextMonthArrow !== bool) {
                          toggleClass(self.nextMonthNav, "flatpickr-disabled", bool);
                          self.__hideNextMonthArrow = bool;
                      }
                  },
              });
              self.currentYearElement = self.yearElements[0];
              updateNavigationCurrentMonth();
              return self.monthNav;
          }
          function buildTime() {
              self.calendarContainer.classList.add("hasTime");
              if (self.config.noCalendar)
                  self.calendarContainer.classList.add("noCalendar");
              self.timeContainer = createElement("div", "flatpickr-time");
              self.timeContainer.tabIndex = -1;
              var separator = createElement("span", "flatpickr-time-separator", ":");
              var hourInput = createNumberInput("flatpickr-hour", {
                  "aria-label": self.l10n.hourAriaLabel,
              });
              self.hourElement = hourInput.getElementsByTagName("input")[0];
              var minuteInput = createNumberInput("flatpickr-minute", {
                  "aria-label": self.l10n.minuteAriaLabel,
              });
              self.minuteElement = minuteInput.getElementsByTagName("input")[0];
              self.hourElement.tabIndex = self.minuteElement.tabIndex = -1;
              self.hourElement.value = pad(self.latestSelectedDateObj
                  ? self.latestSelectedDateObj.getHours()
                  : self.config.time_24hr
                      ? self.config.defaultHour
                      : military2ampm(self.config.defaultHour));
              self.minuteElement.value = pad(self.latestSelectedDateObj
                  ? self.latestSelectedDateObj.getMinutes()
                  : self.config.defaultMinute);
              self.hourElement.setAttribute("step", self.config.hourIncrement.toString());
              self.minuteElement.setAttribute("step", self.config.minuteIncrement.toString());
              self.hourElement.setAttribute("min", self.config.time_24hr ? "0" : "1");
              self.hourElement.setAttribute("max", self.config.time_24hr ? "23" : "12");
              self.minuteElement.setAttribute("min", "0");
              self.minuteElement.setAttribute("max", "59");
              self.timeContainer.appendChild(hourInput);
              self.timeContainer.appendChild(separator);
              self.timeContainer.appendChild(minuteInput);
              if (self.config.time_24hr)
                  self.timeContainer.classList.add("time24hr");
              if (self.config.enableSeconds) {
                  self.timeContainer.classList.add("hasSeconds");
                  var secondInput = createNumberInput("flatpickr-second");
                  self.secondElement = secondInput.getElementsByTagName("input")[0];
                  self.secondElement.value = pad(self.latestSelectedDateObj
                      ? self.latestSelectedDateObj.getSeconds()
                      : self.config.defaultSeconds);
                  self.secondElement.setAttribute("step", self.minuteElement.getAttribute("step"));
                  self.secondElement.setAttribute("min", "0");
                  self.secondElement.setAttribute("max", "59");
                  self.timeContainer.appendChild(createElement("span", "flatpickr-time-separator", ":"));
                  self.timeContainer.appendChild(secondInput);
              }
              if (!self.config.time_24hr) {
                  // add self.amPM if appropriate
                  self.amPM = createElement("span", "flatpickr-am-pm", self.l10n.amPM[int((self.latestSelectedDateObj
                      ? self.hourElement.value
                      : self.config.defaultHour) > 11)]);
                  self.amPM.title = self.l10n.toggleTitle;
                  self.amPM.tabIndex = -1;
                  self.timeContainer.appendChild(self.amPM);
              }
              return self.timeContainer;
          }
          function buildWeekdays() {
              if (!self.weekdayContainer)
                  self.weekdayContainer = createElement("div", "flatpickr-weekdays");
              else
                  clearNode(self.weekdayContainer);
              for (var i = self.config.showMonths; i--;) {
                  var container = createElement("div", "flatpickr-weekdaycontainer");
                  self.weekdayContainer.appendChild(container);
              }
              updateWeekdays();
              return self.weekdayContainer;
          }
          function updateWeekdays() {
              if (!self.weekdayContainer) {
                  return;
              }
              var firstDayOfWeek = self.l10n.firstDayOfWeek;
              var weekdays = __spreadArrays(self.l10n.weekdays.shorthand);
              if (firstDayOfWeek > 0 && firstDayOfWeek < weekdays.length) {
                  weekdays = __spreadArrays(weekdays.splice(firstDayOfWeek, weekdays.length), weekdays.splice(0, firstDayOfWeek));
              }
              for (var i = self.config.showMonths; i--;) {
                  self.weekdayContainer.children[i].innerHTML = "\n      <span class='flatpickr-weekday'>\n        " + weekdays.join("</span><span class='flatpickr-weekday'>") + "\n      </span>\n      ";
              }
          }
          /* istanbul ignore next */
          function buildWeeks() {
              self.calendarContainer.classList.add("hasWeeks");
              var weekWrapper = createElement("div", "flatpickr-weekwrapper");
              weekWrapper.appendChild(createElement("span", "flatpickr-weekday", self.l10n.weekAbbreviation));
              var weekNumbers = createElement("div", "flatpickr-weeks");
              weekWrapper.appendChild(weekNumbers);
              return {
                  weekWrapper: weekWrapper,
                  weekNumbers: weekNumbers,
              };
          }
          function changeMonth(value, isOffset) {
              if (isOffset === void 0) { isOffset = true; }
              var delta = isOffset ? value : value - self.currentMonth;
              if ((delta < 0 && self._hidePrevMonthArrow === true) ||
                  (delta > 0 && self._hideNextMonthArrow === true))
                  return;
              self.currentMonth += delta;
              if (self.currentMonth < 0 || self.currentMonth > 11) {
                  self.currentYear += self.currentMonth > 11 ? 1 : -1;
                  self.currentMonth = (self.currentMonth + 12) % 12;
                  triggerEvent("onYearChange");
                  buildMonthSwitch();
              }
              buildDays();
              triggerEvent("onMonthChange");
              updateNavigationCurrentMonth();
          }
          function clear(triggerChangeEvent, toInitial) {
              if (triggerChangeEvent === void 0) { triggerChangeEvent = true; }
              if (toInitial === void 0) { toInitial = true; }
              self.input.value = "";
              if (self.altInput !== undefined)
                  self.altInput.value = "";
              if (self.mobileInput !== undefined)
                  self.mobileInput.value = "";
              self.selectedDates = [];
              self.latestSelectedDateObj = undefined;
              if (toInitial === true) {
                  self.currentYear = self._initialDate.getFullYear();
                  self.currentMonth = self._initialDate.getMonth();
              }
              if (self.config.enableTime === true) {
                  var _a = getDefaultHours(), hours = _a.hours, minutes = _a.minutes, seconds = _a.seconds;
                  setHours(hours, minutes, seconds);
              }
              self.redraw();
              if (triggerChangeEvent)
                  // triggerChangeEvent is true (default) or an Event
                  triggerEvent("onChange");
          }
          function close() {
              self.isOpen = false;
              if (!self.isMobile) {
                  if (self.calendarContainer !== undefined) {
                      self.calendarContainer.classList.remove("open");
                  }
                  if (self._input !== undefined) {
                      self._input.classList.remove("active");
                  }
              }
              triggerEvent("onClose");
          }
          function destroy() {
              if (self.config !== undefined)
                  triggerEvent("onDestroy");
              for (var i = self._handlers.length; i--;) {
                  var h = self._handlers[i];
                  h.element.removeEventListener(h.event, h.handler, h.options);
              }
              self._handlers = [];
              if (self.mobileInput) {
                  if (self.mobileInput.parentNode)
                      self.mobileInput.parentNode.removeChild(self.mobileInput);
                  self.mobileInput = undefined;
              }
              else if (self.calendarContainer && self.calendarContainer.parentNode) {
                  if (self.config.static && self.calendarContainer.parentNode) {
                      var wrapper = self.calendarContainer.parentNode;
                      wrapper.lastChild && wrapper.removeChild(wrapper.lastChild);
                      if (wrapper.parentNode) {
                          while (wrapper.firstChild)
                              wrapper.parentNode.insertBefore(wrapper.firstChild, wrapper);
                          wrapper.parentNode.removeChild(wrapper);
                      }
                  }
                  else
                      self.calendarContainer.parentNode.removeChild(self.calendarContainer);
              }
              if (self.altInput) {
                  self.input.type = "text";
                  if (self.altInput.parentNode)
                      self.altInput.parentNode.removeChild(self.altInput);
                  delete self.altInput;
              }
              if (self.input) {
                  self.input.type = self.input._type;
                  self.input.classList.remove("flatpickr-input");
                  self.input.removeAttribute("readonly");
              }
              [
                  "_showTimeInput",
                  "latestSelectedDateObj",
                  "_hideNextMonthArrow",
                  "_hidePrevMonthArrow",
                  "__hideNextMonthArrow",
                  "__hidePrevMonthArrow",
                  "isMobile",
                  "isOpen",
                  "selectedDateElem",
                  "minDateHasTime",
                  "maxDateHasTime",
                  "days",
                  "daysContainer",
                  "_input",
                  "_positionElement",
                  "innerContainer",
                  "rContainer",
                  "monthNav",
                  "todayDateElem",
                  "calendarContainer",
                  "weekdayContainer",
                  "prevMonthNav",
                  "nextMonthNav",
                  "monthsDropdownContainer",
                  "currentMonthElement",
                  "currentYearElement",
                  "navigationCurrentMonth",
                  "selectedDateElem",
                  "config",
              ].forEach(function (k) {
                  try {
                      delete self[k];
                  }
                  catch (_) { }
              });
          }
          function isCalendarElem(elem) {
              if (self.config.appendTo && self.config.appendTo.contains(elem))
                  return true;
              return self.calendarContainer.contains(elem);
          }
          function documentClick(e) {
              if (self.isOpen && !self.config.inline) {
                  var eventTarget_1 = getEventTarget(e);
                  var isCalendarElement = isCalendarElem(eventTarget_1);
                  var isInput = eventTarget_1 === self.input ||
                      eventTarget_1 === self.altInput ||
                      self.element.contains(eventTarget_1) ||
                      // web components
                      // e.path is not present in all browsers. circumventing typechecks
                      (e.path &&
                          e.path.indexOf &&
                          (~e.path.indexOf(self.input) ||
                              ~e.path.indexOf(self.altInput)));
                  var lostFocus = e.type === "blur"
                      ? isInput &&
                          e.relatedTarget &&
                          !isCalendarElem(e.relatedTarget)
                      : !isInput &&
                          !isCalendarElement &&
                          !isCalendarElem(e.relatedTarget);
                  var isIgnored = !self.config.ignoredFocusElements.some(function (elem) {
                      return elem.contains(eventTarget_1);
                  });
                  if (lostFocus && isIgnored) {
                      if (self.timeContainer !== undefined &&
                          self.minuteElement !== undefined &&
                          self.hourElement !== undefined &&
                          self.input.value !== "" &&
                          self.input.value !== undefined) {
                          updateTime();
                      }
                      self.close();
                      if (self.config &&
                          self.config.mode === "range" &&
                          self.selectedDates.length === 1) {
                          self.clear(false);
                          self.redraw();
                      }
                  }
              }
          }
          function changeYear(newYear) {
              if (!newYear ||
                  (self.config.minDate && newYear < self.config.minDate.getFullYear()) ||
                  (self.config.maxDate && newYear > self.config.maxDate.getFullYear()))
                  return;
              var newYearNum = newYear, isNewYear = self.currentYear !== newYearNum;
              self.currentYear = newYearNum || self.currentYear;
              if (self.config.maxDate &&
                  self.currentYear === self.config.maxDate.getFullYear()) {
                  self.currentMonth = Math.min(self.config.maxDate.getMonth(), self.currentMonth);
              }
              else if (self.config.minDate &&
                  self.currentYear === self.config.minDate.getFullYear()) {
                  self.currentMonth = Math.max(self.config.minDate.getMonth(), self.currentMonth);
              }
              if (isNewYear) {
                  self.redraw();
                  triggerEvent("onYearChange");
                  buildMonthSwitch();
              }
          }
          function isEnabled(date, timeless) {
              if (timeless === void 0) { timeless = true; }
              var dateToCheck = self.parseDate(date, undefined, timeless); // timeless
              if ((self.config.minDate &&
                  dateToCheck &&
                  compareDates(dateToCheck, self.config.minDate, timeless !== undefined ? timeless : !self.minDateHasTime) < 0) ||
                  (self.config.maxDate &&
                      dateToCheck &&
                      compareDates(dateToCheck, self.config.maxDate, timeless !== undefined ? timeless : !self.maxDateHasTime) > 0))
                  return false;
              if (self.config.enable.length === 0 && self.config.disable.length === 0)
                  return true;
              if (dateToCheck === undefined)
                  return false;
              var bool = self.config.enable.length > 0, array = bool ? self.config.enable : self.config.disable;
              for (var i = 0, d = void 0; i < array.length; i++) {
                  d = array[i];
                  if (typeof d === "function" &&
                      d(dateToCheck) // disabled by function
                  )
                      return bool;
                  else if (d instanceof Date &&
                      dateToCheck !== undefined &&
                      d.getTime() === dateToCheck.getTime())
                      // disabled by date
                      return bool;
                  else if (typeof d === "string" && dateToCheck !== undefined) {
                      // disabled by date string
                      var parsed = self.parseDate(d, undefined, true);
                      return parsed && parsed.getTime() === dateToCheck.getTime()
                          ? bool
                          : !bool;
                  }
                  else if (
                  // disabled by range
                  typeof d === "object" &&
                      dateToCheck !== undefined &&
                      d.from &&
                      d.to &&
                      dateToCheck.getTime() >= d.from.getTime() &&
                      dateToCheck.getTime() <= d.to.getTime())
                      return bool;
              }
              return !bool;
          }
          function isInView(elem) {
              if (self.daysContainer !== undefined)
                  return (elem.className.indexOf("hidden") === -1 &&
                      elem.className.indexOf("flatpickr-disabled") === -1 &&
                      self.daysContainer.contains(elem));
              return false;
          }
          function onBlur(e) {
              var isInput = e.target === self._input;
              if (isInput &&
                  !(e.relatedTarget && isCalendarElem(e.relatedTarget))) {
                  self.setDate(self._input.value, true, e.target === self.altInput
                      ? self.config.altFormat
                      : self.config.dateFormat);
              }
          }
          function onKeyDown(e) {
              // e.key                      e.keyCode
              // "Backspace"                        8
              // "Tab"                              9
              // "Enter"                           13
              // "Escape"     (IE "Esc")           27
              // "ArrowLeft"  (IE "Left")          37
              // "ArrowUp"    (IE "Up")            38
              // "ArrowRight" (IE "Right")         39
              // "ArrowDown"  (IE "Down")          40
              // "Delete"     (IE "Del")           46
              var eventTarget = getEventTarget(e);
              var isInput = self.config.wrap
                  ? element.contains(eventTarget)
                  : eventTarget === self._input;
              var allowInput = self.config.allowInput;
              var allowKeydown = self.isOpen && (!allowInput || !isInput);
              var allowInlineKeydown = self.config.inline && isInput && !allowInput;
              if (e.keyCode === 13 && isInput) {
                  if (allowInput) {
                      self.setDate(self._input.value, true, eventTarget === self.altInput
                          ? self.config.altFormat
                          : self.config.dateFormat);
                      return eventTarget.blur();
                  }
                  else {
                      self.open();
                  }
              }
              else if (isCalendarElem(eventTarget) ||
                  allowKeydown ||
                  allowInlineKeydown) {
                  var isTimeObj = !!self.timeContainer &&
                      self.timeContainer.contains(eventTarget);
                  switch (e.keyCode) {
                      case 13:
                          if (isTimeObj) {
                              e.preventDefault();
                              updateTime();
                              focusAndClose();
                          }
                          else
                              selectDate(e);
                          break;
                      case 27: // escape
                          e.preventDefault();
                          focusAndClose();
                          break;
                      case 8:
                      case 46:
                          if (isInput && !self.config.allowInput) {
                              e.preventDefault();
                              self.clear();
                          }
                          break;
                      case 37:
                      case 39:
                          if (!isTimeObj && !isInput) {
                              e.preventDefault();
                              if (self.daysContainer !== undefined &&
                                  (allowInput === false ||
                                      (document.activeElement && isInView(document.activeElement)))) {
                                  var delta_1 = e.keyCode === 39 ? 1 : -1;
                                  if (!e.ctrlKey)
                                      focusOnDay(undefined, delta_1);
                                  else {
                                      e.stopPropagation();
                                      changeMonth(delta_1);
                                      focusOnDay(getFirstAvailableDay(1), 0);
                                  }
                              }
                          }
                          else if (self.hourElement)
                              self.hourElement.focus();
                          break;
                      case 38:
                      case 40:
                          e.preventDefault();
                          var delta = e.keyCode === 40 ? 1 : -1;
                          if ((self.daysContainer &&
                              eventTarget.$i !== undefined) ||
                              eventTarget === self.input ||
                              eventTarget === self.altInput) {
                              if (e.ctrlKey) {
                                  e.stopPropagation();
                                  changeYear(self.currentYear - delta);
                                  focusOnDay(getFirstAvailableDay(1), 0);
                              }
                              else if (!isTimeObj)
                                  focusOnDay(undefined, delta * 7);
                          }
                          else if (eventTarget === self.currentYearElement) {
                              changeYear(self.currentYear - delta);
                          }
                          else if (self.config.enableTime) {
                              if (!isTimeObj && self.hourElement)
                                  self.hourElement.focus();
                              updateTime(e);
                              self._debouncedChange();
                          }
                          break;
                      case 9:
                          if (isTimeObj) {
                              var elems = [
                                  self.hourElement,
                                  self.minuteElement,
                                  self.secondElement,
                                  self.amPM,
                              ]
                                  .concat(self.pluginElements)
                                  .filter(function (x) { return x; });
                              var i = elems.indexOf(eventTarget);
                              if (i !== -1) {
                                  var target = elems[i + (e.shiftKey ? -1 : 1)];
                                  e.preventDefault();
                                  (target || self._input).focus();
                              }
                          }
                          else if (!self.config.noCalendar &&
                              self.daysContainer &&
                              self.daysContainer.contains(eventTarget) &&
                              e.shiftKey) {
                              e.preventDefault();
                              self._input.focus();
                          }
                          break;
                  }
              }
              if (self.amPM !== undefined && eventTarget === self.amPM) {
                  switch (e.key) {
                      case self.l10n.amPM[0].charAt(0):
                      case self.l10n.amPM[0].charAt(0).toLowerCase():
                          self.amPM.textContent = self.l10n.amPM[0];
                          setHoursFromInputs();
                          updateValue();
                          break;
                      case self.l10n.amPM[1].charAt(0):
                      case self.l10n.amPM[1].charAt(0).toLowerCase():
                          self.amPM.textContent = self.l10n.amPM[1];
                          setHoursFromInputs();
                          updateValue();
                          break;
                  }
              }
              if (isInput || isCalendarElem(eventTarget)) {
                  triggerEvent("onKeyDown", e);
              }
          }
          function onMouseOver(elem) {
              if (self.selectedDates.length !== 1 ||
                  (elem &&
                      (!elem.classList.contains("flatpickr-day") ||
                          elem.classList.contains("flatpickr-disabled"))))
                  return;
              var hoverDate = elem
                  ? elem.dateObj.getTime()
                  : self.days.firstElementChild.dateObj.getTime(), initialDate = self.parseDate(self.selectedDates[0], undefined, true).getTime(), rangeStartDate = Math.min(hoverDate, self.selectedDates[0].getTime()), rangeEndDate = Math.max(hoverDate, self.selectedDates[0].getTime());
              var containsDisabled = false;
              var minRange = 0, maxRange = 0;
              for (var t = rangeStartDate; t < rangeEndDate; t += duration.DAY) {
                  if (!isEnabled(new Date(t), true)) {
                      containsDisabled =
                          containsDisabled || (t > rangeStartDate && t < rangeEndDate);
                      if (t < initialDate && (!minRange || t > minRange))
                          minRange = t;
                      else if (t > initialDate && (!maxRange || t < maxRange))
                          maxRange = t;
                  }
              }
              for (var m = 0; m < self.config.showMonths; m++) {
                  var month = self.daysContainer.children[m];
                  var _loop_1 = function (i, l) {
                      var dayElem = month.children[i], date = dayElem.dateObj;
                      var timestamp = date.getTime();
                      var outOfRange = (minRange > 0 && timestamp < minRange) ||
                          (maxRange > 0 && timestamp > maxRange);
                      if (outOfRange) {
                          dayElem.classList.add("notAllowed");
                          ["inRange", "startRange", "endRange"].forEach(function (c) {
                              dayElem.classList.remove(c);
                          });
                          return "continue";
                      }
                      else if (containsDisabled && !outOfRange)
                          return "continue";
                      ["startRange", "inRange", "endRange", "notAllowed"].forEach(function (c) {
                          dayElem.classList.remove(c);
                      });
                      if (elem !== undefined) {
                          elem.classList.add(hoverDate <= self.selectedDates[0].getTime()
                              ? "startRange"
                              : "endRange");
                          if (initialDate < hoverDate && timestamp === initialDate)
                              dayElem.classList.add("startRange");
                          else if (initialDate > hoverDate && timestamp === initialDate)
                              dayElem.classList.add("endRange");
                          if (timestamp >= minRange &&
                              (maxRange === 0 || timestamp <= maxRange) &&
                              isBetween(timestamp, initialDate, hoverDate))
                              dayElem.classList.add("inRange");
                      }
                  };
                  for (var i = 0, l = month.children.length; i < l; i++) {
                      _loop_1(i, l);
                  }
              }
          }
          function onResize() {
              if (self.isOpen && !self.config.static && !self.config.inline)
                  positionCalendar();
          }
          function open(e, positionElement) {
              if (positionElement === void 0) { positionElement = self._positionElement; }
              if (self.isMobile === true) {
                  if (e) {
                      e.preventDefault();
                      var eventTarget = getEventTarget(e);
                      eventTarget && eventTarget.blur();
                  }
                  if (self.mobileInput !== undefined) {
                      self.mobileInput.focus();
                      self.mobileInput.click();
                  }
                  triggerEvent("onOpen");
                  return;
              }
              if (self._input.disabled || self.config.inline)
                  return;
              var wasOpen = self.isOpen;
              self.isOpen = true;
              if (!wasOpen) {
                  self.calendarContainer.classList.add("open");
                  self._input.classList.add("active");
                  triggerEvent("onOpen");
                  positionCalendar(positionElement);
              }
              if (self.config.enableTime === true && self.config.noCalendar === true) {
                  if (self.config.allowInput === false &&
                      (e === undefined ||
                          !self.timeContainer.contains(e.relatedTarget))) {
                      setTimeout(function () { return self.hourElement.select(); }, 50);
                  }
              }
          }
          function minMaxDateSetter(type) {
              return function (date) {
                  var dateObj = (self.config["_" + type + "Date"] = self.parseDate(date, self.config.dateFormat));
                  var inverseDateObj = self.config["_" + (type === "min" ? "max" : "min") + "Date"];
                  if (dateObj !== undefined) {
                      self[type === "min" ? "minDateHasTime" : "maxDateHasTime"] =
                          dateObj.getHours() > 0 ||
                              dateObj.getMinutes() > 0 ||
                              dateObj.getSeconds() > 0;
                  }
                  if (self.selectedDates) {
                      self.selectedDates = self.selectedDates.filter(function (d) { return isEnabled(d); });
                      if (!self.selectedDates.length && type === "min")
                          setHoursFromDate(dateObj);
                      updateValue();
                  }
                  if (self.daysContainer) {
                      redraw();
                      if (dateObj !== undefined)
                          self.currentYearElement[type] = dateObj.getFullYear().toString();
                      else
                          self.currentYearElement.removeAttribute(type);
                      self.currentYearElement.disabled =
                          !!inverseDateObj &&
                              dateObj !== undefined &&
                              inverseDateObj.getFullYear() === dateObj.getFullYear();
                  }
              };
          }
          function parseConfig() {
              var boolOpts = [
                  "wrap",
                  "weekNumbers",
                  "allowInput",
                  "allowInvalidPreload",
                  "clickOpens",
                  "time_24hr",
                  "enableTime",
                  "noCalendar",
                  "altInput",
                  "shorthandCurrentMonth",
                  "inline",
                  "static",
                  "enableSeconds",
                  "disableMobile",
              ];
              var userConfig = __assign(__assign({}, JSON.parse(JSON.stringify(element.dataset || {}))), instanceConfig);
              var formats = {};
              self.config.parseDate = userConfig.parseDate;
              self.config.formatDate = userConfig.formatDate;
              Object.defineProperty(self.config, "enable", {
                  get: function () { return self.config._enable; },
                  set: function (dates) {
                      self.config._enable = parseDateRules(dates);
                  },
              });
              Object.defineProperty(self.config, "disable", {
                  get: function () { return self.config._disable; },
                  set: function (dates) {
                      self.config._disable = parseDateRules(dates);
                  },
              });
              var timeMode = userConfig.mode === "time";
              if (!userConfig.dateFormat && (userConfig.enableTime || timeMode)) {
                  var defaultDateFormat = flatpickr.defaultConfig.dateFormat || defaults.dateFormat;
                  formats.dateFormat =
                      userConfig.noCalendar || timeMode
                          ? "H:i" + (userConfig.enableSeconds ? ":S" : "")
                          : defaultDateFormat + " H:i" + (userConfig.enableSeconds ? ":S" : "");
              }
              if (userConfig.altInput &&
                  (userConfig.enableTime || timeMode) &&
                  !userConfig.altFormat) {
                  var defaultAltFormat = flatpickr.defaultConfig.altFormat || defaults.altFormat;
                  formats.altFormat =
                      userConfig.noCalendar || timeMode
                          ? "h:i" + (userConfig.enableSeconds ? ":S K" : " K")
                          : defaultAltFormat + (" h:i" + (userConfig.enableSeconds ? ":S" : "") + " K");
              }
              Object.defineProperty(self.config, "minDate", {
                  get: function () { return self.config._minDate; },
                  set: minMaxDateSetter("min"),
              });
              Object.defineProperty(self.config, "maxDate", {
                  get: function () { return self.config._maxDate; },
                  set: minMaxDateSetter("max"),
              });
              var minMaxTimeSetter = function (type) { return function (val) {
                  self.config[type === "min" ? "_minTime" : "_maxTime"] = self.parseDate(val, "H:i:S");
              }; };
              Object.defineProperty(self.config, "minTime", {
                  get: function () { return self.config._minTime; },
                  set: minMaxTimeSetter("min"),
              });
              Object.defineProperty(self.config, "maxTime", {
                  get: function () { return self.config._maxTime; },
                  set: minMaxTimeSetter("max"),
              });
              if (userConfig.mode === "time") {
                  self.config.noCalendar = true;
                  self.config.enableTime = true;
              }
              Object.assign(self.config, formats, userConfig);
              for (var i = 0; i < boolOpts.length; i++)
                  // https://github.com/microsoft/TypeScript/issues/31663
                  self.config[boolOpts[i]] =
                      self.config[boolOpts[i]] === true ||
                          self.config[boolOpts[i]] === "true";
              HOOKS.filter(function (hook) { return self.config[hook] !== undefined; }).forEach(function (hook) {
                  self.config[hook] = arrayify(self.config[hook] || []).map(bindToInstance);
              });
              self.isMobile =
                  !self.config.disableMobile &&
                      !self.config.inline &&
                      self.config.mode === "single" &&
                      !self.config.disable.length &&
                      !self.config.enable.length &&
                      !self.config.weekNumbers &&
                      /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
              for (var i = 0; i < self.config.plugins.length; i++) {
                  var pluginConf = self.config.plugins[i](self) || {};
                  for (var key in pluginConf) {
                      if (HOOKS.indexOf(key) > -1) {
                          self.config[key] = arrayify(pluginConf[key])
                              .map(bindToInstance)
                              .concat(self.config[key]);
                      }
                      else if (typeof userConfig[key] === "undefined")
                          self.config[key] = pluginConf[key];
                  }
              }
              if (!userConfig.altInputClass) {
                  self.config.altInputClass =
                      getInputElem().className + " " + self.config.altInputClass;
              }
              triggerEvent("onParseConfig");
          }
          function getInputElem() {
              return self.config.wrap
                  ? element.querySelector("[data-input]")
                  : element;
          }
          function setupLocale() {
              if (typeof self.config.locale !== "object" &&
                  typeof flatpickr.l10ns[self.config.locale] === "undefined")
                  self.config.errorHandler(new Error("flatpickr: invalid locale " + self.config.locale));
              self.l10n = __assign(__assign({}, flatpickr.l10ns.default), (typeof self.config.locale === "object"
                  ? self.config.locale
                  : self.config.locale !== "default"
                      ? flatpickr.l10ns[self.config.locale]
                      : undefined));
              tokenRegex.K = "(" + self.l10n.amPM[0] + "|" + self.l10n.amPM[1] + "|" + self.l10n.amPM[0].toLowerCase() + "|" + self.l10n.amPM[1].toLowerCase() + ")";
              var userConfig = __assign(__assign({}, instanceConfig), JSON.parse(JSON.stringify(element.dataset || {})));
              if (userConfig.time_24hr === undefined &&
                  flatpickr.defaultConfig.time_24hr === undefined) {
                  self.config.time_24hr = self.l10n.time_24hr;
              }
              self.formatDate = createDateFormatter(self);
              self.parseDate = createDateParser({ config: self.config, l10n: self.l10n });
          }
          function positionCalendar(customPositionElement) {
              if (self.calendarContainer === undefined)
                  return;
              triggerEvent("onPreCalendarPosition");
              var positionElement = customPositionElement || self._positionElement;
              var calendarHeight = Array.prototype.reduce.call(self.calendarContainer.children, (function (acc, child) { return acc + child.offsetHeight; }), 0), calendarWidth = self.calendarContainer.offsetWidth, configPos = self.config.position.split(" "), configPosVertical = configPos[0], configPosHorizontal = configPos.length > 1 ? configPos[1] : null, inputBounds = positionElement.getBoundingClientRect(), distanceFromBottom = window.innerHeight - inputBounds.bottom, showOnTop = configPosVertical === "above" ||
                  (configPosVertical !== "below" &&
                      distanceFromBottom < calendarHeight &&
                      inputBounds.top > calendarHeight);
              var top = window.pageYOffset +
                  inputBounds.top +
                  (!showOnTop ? positionElement.offsetHeight + 2 : -calendarHeight - 2);
              toggleClass(self.calendarContainer, "arrowTop", !showOnTop);
              toggleClass(self.calendarContainer, "arrowBottom", showOnTop);
              if (self.config.inline)
                  return;
              var left = window.pageXOffset + inputBounds.left;
              var isCenter = false;
              var isRight = false;
              if (configPosHorizontal === "center") {
                  left -= (calendarWidth - inputBounds.width) / 2;
                  isCenter = true;
              }
              else if (configPosHorizontal === "right") {
                  left -= calendarWidth - inputBounds.width;
                  isRight = true;
              }
              toggleClass(self.calendarContainer, "arrowLeft", !isCenter && !isRight);
              toggleClass(self.calendarContainer, "arrowCenter", isCenter);
              toggleClass(self.calendarContainer, "arrowRight", isRight);
              var right = window.document.body.offsetWidth -
                  (window.pageXOffset + inputBounds.right);
              var rightMost = left + calendarWidth > window.document.body.offsetWidth;
              var centerMost = right + calendarWidth > window.document.body.offsetWidth;
              toggleClass(self.calendarContainer, "rightMost", rightMost);
              if (self.config.static)
                  return;
              self.calendarContainer.style.top = top + "px";
              if (!rightMost) {
                  self.calendarContainer.style.left = left + "px";
                  self.calendarContainer.style.right = "auto";
              }
              else if (!centerMost) {
                  self.calendarContainer.style.left = "auto";
                  self.calendarContainer.style.right = right + "px";
              }
              else {
                  var doc = getDocumentStyleSheet();
                  // some testing environments don't have css support
                  if (doc === undefined)
                      return;
                  var bodyWidth = window.document.body.offsetWidth;
                  var centerLeft = Math.max(0, bodyWidth / 2 - calendarWidth / 2);
                  var centerBefore = ".flatpickr-calendar.centerMost:before";
                  var centerAfter = ".flatpickr-calendar.centerMost:after";
                  var centerIndex = doc.cssRules.length;
                  var centerStyle = "{left:" + inputBounds.left + "px;right:auto;}";
                  toggleClass(self.calendarContainer, "rightMost", false);
                  toggleClass(self.calendarContainer, "centerMost", true);
                  doc.insertRule(centerBefore + "," + centerAfter + centerStyle, centerIndex);
                  self.calendarContainer.style.left = centerLeft + "px";
                  self.calendarContainer.style.right = "auto";
              }
          }
          function getDocumentStyleSheet() {
              var editableSheet = null;
              for (var i = 0; i < document.styleSheets.length; i++) {
                  var sheet = document.styleSheets[i];
                  try {
                      sheet.cssRules;
                  }
                  catch (err) {
                      continue;
                  }
                  editableSheet = sheet;
                  break;
              }
              return editableSheet != null ? editableSheet : createStyleSheet();
          }
          function createStyleSheet() {
              var style = document.createElement("style");
              document.head.appendChild(style);
              return style.sheet;
          }
          function redraw() {
              if (self.config.noCalendar || self.isMobile)
                  return;
              buildMonthSwitch();
              updateNavigationCurrentMonth();
              buildDays();
          }
          function focusAndClose() {
              self._input.focus();
              if (window.navigator.userAgent.indexOf("MSIE") !== -1 ||
                  navigator.msMaxTouchPoints !== undefined) {
                  // hack - bugs in the way IE handles focus keeps the calendar open
                  setTimeout(self.close, 0);
              }
              else {
                  self.close();
              }
          }
          function selectDate(e) {
              e.preventDefault();
              e.stopPropagation();
              var isSelectable = function (day) {
                  return day.classList &&
                      day.classList.contains("flatpickr-day") &&
                      !day.classList.contains("flatpickr-disabled") &&
                      !day.classList.contains("notAllowed");
              };
              var t = findParent(getEventTarget(e), isSelectable);
              if (t === undefined)
                  return;
              var target = t;
              var selectedDate = (self.latestSelectedDateObj = new Date(target.dateObj.getTime()));
              var shouldChangeMonth = (selectedDate.getMonth() < self.currentMonth ||
                  selectedDate.getMonth() >
                      self.currentMonth + self.config.showMonths - 1) &&
                  self.config.mode !== "range";
              self.selectedDateElem = target;
              if (self.config.mode === "single")
                  self.selectedDates = [selectedDate];
              else if (self.config.mode === "multiple") {
                  var selectedIndex = isDateSelected(selectedDate);
                  if (selectedIndex)
                      self.selectedDates.splice(parseInt(selectedIndex), 1);
                  else
                      self.selectedDates.push(selectedDate);
              }
              else if (self.config.mode === "range") {
                  if (self.selectedDates.length === 2) {
                      self.clear(false, false);
                  }
                  self.latestSelectedDateObj = selectedDate;
                  self.selectedDates.push(selectedDate);
                  // unless selecting same date twice, sort ascendingly
                  if (compareDates(selectedDate, self.selectedDates[0], true) !== 0)
                      self.selectedDates.sort(function (a, b) { return a.getTime() - b.getTime(); });
              }
              setHoursFromInputs();
              if (shouldChangeMonth) {
                  var isNewYear = self.currentYear !== selectedDate.getFullYear();
                  self.currentYear = selectedDate.getFullYear();
                  self.currentMonth = selectedDate.getMonth();
                  if (isNewYear) {
                      triggerEvent("onYearChange");
                      buildMonthSwitch();
                  }
                  triggerEvent("onMonthChange");
              }
              updateNavigationCurrentMonth();
              buildDays();
              updateValue();
              // maintain focus
              if (!shouldChangeMonth &&
                  self.config.mode !== "range" &&
                  self.config.showMonths === 1)
                  focusOnDayElem(target);
              else if (self.selectedDateElem !== undefined &&
                  self.hourElement === undefined) {
                  self.selectedDateElem && self.selectedDateElem.focus();
              }
              if (self.hourElement !== undefined)
                  self.hourElement !== undefined && self.hourElement.focus();
              if (self.config.closeOnSelect) {
                  var single = self.config.mode === "single" && !self.config.enableTime;
                  var range = self.config.mode === "range" &&
                      self.selectedDates.length === 2 &&
                      !self.config.enableTime;
                  if (single || range) {
                      focusAndClose();
                  }
              }
              triggerChange();
          }
          var CALLBACKS = {
              locale: [setupLocale, updateWeekdays],
              showMonths: [buildMonths, setCalendarWidth, buildWeekdays],
              minDate: [jumpToDate],
              maxDate: [jumpToDate],
          };
          function set(option, value) {
              if (option !== null && typeof option === "object") {
                  Object.assign(self.config, option);
                  for (var key in option) {
                      if (CALLBACKS[key] !== undefined)
                          CALLBACKS[key].forEach(function (x) { return x(); });
                  }
              }
              else {
                  self.config[option] = value;
                  if (CALLBACKS[option] !== undefined)
                      CALLBACKS[option].forEach(function (x) { return x(); });
                  else if (HOOKS.indexOf(option) > -1)
                      self.config[option] = arrayify(value);
              }
              self.redraw();
              updateValue(true);
          }
          function setSelectedDate(inputDate, format) {
              var dates = [];
              if (inputDate instanceof Array)
                  dates = inputDate.map(function (d) { return self.parseDate(d, format); });
              else if (inputDate instanceof Date || typeof inputDate === "number")
                  dates = [self.parseDate(inputDate, format)];
              else if (typeof inputDate === "string") {
                  switch (self.config.mode) {
                      case "single":
                      case "time":
                          dates = [self.parseDate(inputDate, format)];
                          break;
                      case "multiple":
                          dates = inputDate
                              .split(self.config.conjunction)
                              .map(function (date) { return self.parseDate(date, format); });
                          break;
                      case "range":
                          dates = inputDate
                              .split(self.l10n.rangeSeparator)
                              .map(function (date) { return self.parseDate(date, format); });
                          break;
                  }
              }
              else
                  self.config.errorHandler(new Error("Invalid date supplied: " + JSON.stringify(inputDate)));
              self.selectedDates = (self.config.allowInvalidPreload
                  ? dates
                  : dates.filter(function (d) { return d instanceof Date && isEnabled(d, false); }));
              if (self.config.mode === "range")
                  self.selectedDates.sort(function (a, b) { return a.getTime() - b.getTime(); });
          }
          function setDate(date, triggerChange, format) {
              if (triggerChange === void 0) { triggerChange = false; }
              if (format === void 0) { format = self.config.dateFormat; }
              if ((date !== 0 && !date) || (date instanceof Array && date.length === 0))
                  return self.clear(triggerChange);
              setSelectedDate(date, format);
              self.latestSelectedDateObj =
                  self.selectedDates[self.selectedDates.length - 1];
              self.redraw();
              jumpToDate(undefined, triggerChange);
              setHoursFromDate();
              if (self.selectedDates.length === 0) {
                  self.clear(false);
              }
              updateValue(triggerChange);
              if (triggerChange)
                  triggerEvent("onChange");
          }
          function parseDateRules(arr) {
              return arr
                  .slice()
                  .map(function (rule) {
                  if (typeof rule === "string" ||
                      typeof rule === "number" ||
                      rule instanceof Date) {
                      return self.parseDate(rule, undefined, true);
                  }
                  else if (rule &&
                      typeof rule === "object" &&
                      rule.from &&
                      rule.to)
                      return {
                          from: self.parseDate(rule.from, undefined),
                          to: self.parseDate(rule.to, undefined),
                      };
                  return rule;
              })
                  .filter(function (x) { return x; }); // remove falsy values
          }
          function setupDates() {
              self.selectedDates = [];
              self.now = self.parseDate(self.config.now) || new Date();
              // Workaround IE11 setting placeholder as the input's value
              var preloadedDate = self.config.defaultDate ||
                  ((self.input.nodeName === "INPUT" ||
                      self.input.nodeName === "TEXTAREA") &&
                      self.input.placeholder &&
                      self.input.value === self.input.placeholder
                      ? null
                      : self.input.value);
              if (preloadedDate)
                  setSelectedDate(preloadedDate, self.config.dateFormat);
              self._initialDate =
                  self.selectedDates.length > 0
                      ? self.selectedDates[0]
                      : self.config.minDate &&
                          self.config.minDate.getTime() > self.now.getTime()
                          ? self.config.minDate
                          : self.config.maxDate &&
                              self.config.maxDate.getTime() < self.now.getTime()
                              ? self.config.maxDate
                              : self.now;
              self.currentYear = self._initialDate.getFullYear();
              self.currentMonth = self._initialDate.getMonth();
              if (self.selectedDates.length > 0)
                  self.latestSelectedDateObj = self.selectedDates[0];
              if (self.config.minTime !== undefined)
                  self.config.minTime = self.parseDate(self.config.minTime, "H:i");
              if (self.config.maxTime !== undefined)
                  self.config.maxTime = self.parseDate(self.config.maxTime, "H:i");
              self.minDateHasTime =
                  !!self.config.minDate &&
                      (self.config.minDate.getHours() > 0 ||
                          self.config.minDate.getMinutes() > 0 ||
                          self.config.minDate.getSeconds() > 0);
              self.maxDateHasTime =
                  !!self.config.maxDate &&
                      (self.config.maxDate.getHours() > 0 ||
                          self.config.maxDate.getMinutes() > 0 ||
                          self.config.maxDate.getSeconds() > 0);
          }
          function setupInputs() {
              self.input = getInputElem();
              /* istanbul ignore next */
              if (!self.input) {
                  self.config.errorHandler(new Error("Invalid input element specified"));
                  return;
              }
              // hack: store previous type to restore it after destroy()
              self.input._type = self.input.type;
              self.input.type = "text";
              self.input.classList.add("flatpickr-input");
              self._input = self.input;
              if (self.config.altInput) {
                  // replicate self.element
                  self.altInput = createElement(self.input.nodeName, self.config.altInputClass);
                  self._input = self.altInput;
                  self.altInput.placeholder = self.input.placeholder;
                  self.altInput.disabled = self.input.disabled;
                  self.altInput.required = self.input.required;
                  self.altInput.tabIndex = self.input.tabIndex;
                  self.altInput.type = "text";
                  self.input.setAttribute("type", "hidden");
                  if (!self.config.static && self.input.parentNode)
                      self.input.parentNode.insertBefore(self.altInput, self.input.nextSibling);
              }
              if (!self.config.allowInput)
                  self._input.setAttribute("readonly", "readonly");
              self._positionElement = self.config.positionElement || self._input;
          }
          function setupMobile() {
              var inputType = self.config.enableTime
                  ? self.config.noCalendar
                      ? "time"
                      : "datetime-local"
                  : "date";
              self.mobileInput = createElement("input", self.input.className + " flatpickr-mobile");
              self.mobileInput.tabIndex = 1;
              self.mobileInput.type = inputType;
              self.mobileInput.disabled = self.input.disabled;
              self.mobileInput.required = self.input.required;
              self.mobileInput.placeholder = self.input.placeholder;
              self.mobileFormatStr =
                  inputType === "datetime-local"
                      ? "Y-m-d\\TH:i:S"
                      : inputType === "date"
                          ? "Y-m-d"
                          : "H:i:S";
              if (self.selectedDates.length > 0) {
                  self.mobileInput.defaultValue = self.mobileInput.value = self.formatDate(self.selectedDates[0], self.mobileFormatStr);
              }
              if (self.config.minDate)
                  self.mobileInput.min = self.formatDate(self.config.minDate, "Y-m-d");
              if (self.config.maxDate)
                  self.mobileInput.max = self.formatDate(self.config.maxDate, "Y-m-d");
              if (self.input.getAttribute("step"))
                  self.mobileInput.step = String(self.input.getAttribute("step"));
              self.input.type = "hidden";
              if (self.altInput !== undefined)
                  self.altInput.type = "hidden";
              try {
                  if (self.input.parentNode)
                      self.input.parentNode.insertBefore(self.mobileInput, self.input.nextSibling);
              }
              catch (_a) { }
              bind(self.mobileInput, "change", function (e) {
                  self.setDate(getEventTarget(e).value, false, self.mobileFormatStr);
                  triggerEvent("onChange");
                  triggerEvent("onClose");
              });
          }
          function toggle(e) {
              if (self.isOpen === true)
                  return self.close();
              self.open(e);
          }
          function triggerEvent(event, data) {
              // If the instance has been destroyed already, all hooks have been removed
              if (self.config === undefined)
                  return;
              var hooks = self.config[event];
              if (hooks !== undefined && hooks.length > 0) {
                  for (var i = 0; hooks[i] && i < hooks.length; i++)
                      hooks[i](self.selectedDates, self.input.value, self, data);
              }
              if (event === "onChange") {
                  self.input.dispatchEvent(createEvent("change"));
                  // many front-end frameworks bind to the input event
                  self.input.dispatchEvent(createEvent("input"));
              }
          }
          function createEvent(name) {
              var e = document.createEvent("Event");
              e.initEvent(name, true, true);
              return e;
          }
          function isDateSelected(date) {
              for (var i = 0; i < self.selectedDates.length; i++) {
                  if (compareDates(self.selectedDates[i], date) === 0)
                      return "" + i;
              }
              return false;
          }
          function isDateInRange(date) {
              if (self.config.mode !== "range" || self.selectedDates.length < 2)
                  return false;
              return (compareDates(date, self.selectedDates[0]) >= 0 &&
                  compareDates(date, self.selectedDates[1]) <= 0);
          }
          function updateNavigationCurrentMonth() {
              if (self.config.noCalendar || self.isMobile || !self.monthNav)
                  return;
              self.yearElements.forEach(function (yearElement, i) {
                  var d = new Date(self.currentYear, self.currentMonth, 1);
                  d.setMonth(self.currentMonth + i);
                  if (self.config.showMonths > 1 ||
                      self.config.monthSelectorType === "static") {
                      self.monthElements[i].textContent =
                          monthToStr(d.getMonth(), self.config.shorthandCurrentMonth, self.l10n) + " ";
                  }
                  else {
                      self.monthsDropdownContainer.value = d.getMonth().toString();
                  }
                  yearElement.value = d.getFullYear().toString();
              });
              self._hidePrevMonthArrow =
                  self.config.minDate !== undefined &&
                      (self.currentYear === self.config.minDate.getFullYear()
                          ? self.currentMonth <= self.config.minDate.getMonth()
                          : self.currentYear < self.config.minDate.getFullYear());
              self._hideNextMonthArrow =
                  self.config.maxDate !== undefined &&
                      (self.currentYear === self.config.maxDate.getFullYear()
                          ? self.currentMonth + 1 > self.config.maxDate.getMonth()
                          : self.currentYear > self.config.maxDate.getFullYear());
          }
          function getDateStr(format) {
              return self.selectedDates
                  .map(function (dObj) { return self.formatDate(dObj, format); })
                  .filter(function (d, i, arr) {
                  return self.config.mode !== "range" ||
                      self.config.enableTime ||
                      arr.indexOf(d) === i;
              })
                  .join(self.config.mode !== "range"
                  ? self.config.conjunction
                  : self.l10n.rangeSeparator);
          }
          /**
           * Updates the values of inputs associated with the calendar
           */
          function updateValue(triggerChange) {
              if (triggerChange === void 0) { triggerChange = true; }
              if (self.mobileInput !== undefined && self.mobileFormatStr) {
                  self.mobileInput.value =
                      self.latestSelectedDateObj !== undefined
                          ? self.formatDate(self.latestSelectedDateObj, self.mobileFormatStr)
                          : "";
              }
              self.input.value = getDateStr(self.config.dateFormat);
              if (self.altInput !== undefined) {
                  self.altInput.value = getDateStr(self.config.altFormat);
              }
              if (triggerChange !== false)
                  triggerEvent("onValueUpdate");
          }
          function onMonthNavClick(e) {
              var eventTarget = getEventTarget(e);
              var isPrevMonth = self.prevMonthNav.contains(eventTarget);
              var isNextMonth = self.nextMonthNav.contains(eventTarget);
              if (isPrevMonth || isNextMonth) {
                  changeMonth(isPrevMonth ? -1 : 1);
              }
              else if (self.yearElements.indexOf(eventTarget) >= 0) {
                  eventTarget.select();
              }
              else if (eventTarget.classList.contains("arrowUp")) {
                  self.changeYear(self.currentYear + 1);
              }
              else if (eventTarget.classList.contains("arrowDown")) {
                  self.changeYear(self.currentYear - 1);
              }
          }
          function timeWrapper(e) {
              e.preventDefault();
              var isKeyDown = e.type === "keydown", eventTarget = getEventTarget(e), input = eventTarget;
              if (self.amPM !== undefined && eventTarget === self.amPM) {
                  self.amPM.textContent =
                      self.l10n.amPM[int(self.amPM.textContent === self.l10n.amPM[0])];
              }
              var min = parseFloat(input.getAttribute("min")), max = parseFloat(input.getAttribute("max")), step = parseFloat(input.getAttribute("step")), curValue = parseInt(input.value, 10), delta = e.delta ||
                  (isKeyDown ? (e.which === 38 ? 1 : -1) : 0);
              var newValue = curValue + step * delta;
              if (typeof input.value !== "undefined" && input.value.length === 2) {
                  var isHourElem = input === self.hourElement, isMinuteElem = input === self.minuteElement;
                  if (newValue < min) {
                      newValue =
                          max +
                              newValue +
                              int(!isHourElem) +
                              (int(isHourElem) && int(!self.amPM));
                      if (isMinuteElem)
                          incrementNumInput(undefined, -1, self.hourElement);
                  }
                  else if (newValue > max) {
                      newValue =
                          input === self.hourElement ? newValue - max - int(!self.amPM) : min;
                      if (isMinuteElem)
                          incrementNumInput(undefined, 1, self.hourElement);
                  }
                  if (self.amPM &&
                      isHourElem &&
                      (step === 1
                          ? newValue + curValue === 23
                          : Math.abs(newValue - curValue) > step)) {
                      self.amPM.textContent =
                          self.l10n.amPM[int(self.amPM.textContent === self.l10n.amPM[0])];
                  }
                  input.value = pad(newValue);
              }
          }
          init();
          return self;
      }
      /* istanbul ignore next */
      function _flatpickr(nodeList, config) {
          // static list
          var nodes = Array.prototype.slice
              .call(nodeList)
              .filter(function (x) { return x instanceof HTMLElement; });
          var instances = [];
          for (var i = 0; i < nodes.length; i++) {
              var node = nodes[i];
              try {
                  if (node.getAttribute("data-fp-omit") !== null)
                      continue;
                  if (node._flatpickr !== undefined) {
                      node._flatpickr.destroy();
                      node._flatpickr = undefined;
                  }
                  node._flatpickr = FlatpickrInstance(node, config || {});
                  instances.push(node._flatpickr);
              }
              catch (e) {
                  console.error(e);
              }
          }
          return instances.length === 1 ? instances[0] : instances;
      }
      /* istanbul ignore next */
      if (typeof HTMLElement !== "undefined" &&
          typeof HTMLCollection !== "undefined" &&
          typeof NodeList !== "undefined") {
          // browser env
          HTMLCollection.prototype.flatpickr = NodeList.prototype.flatpickr = function (config) {
              return _flatpickr(this, config);
          };
          HTMLElement.prototype.flatpickr = function (config) {
              return _flatpickr([this], config);
          };
      }
      /* istanbul ignore next */
      var flatpickr = function (selector, config) {
          if (typeof selector === "string") {
              return _flatpickr(window.document.querySelectorAll(selector), config);
          }
          else if (selector instanceof Node) {
              return _flatpickr([selector], config);
          }
          else {
              return _flatpickr(selector, config);
          }
      };
      /* istanbul ignore next */
      flatpickr.defaultConfig = {};
      flatpickr.l10ns = {
          en: __assign({}, english),
          default: __assign({}, english),
      };
      flatpickr.localize = function (l10n) {
          flatpickr.l10ns.default = __assign(__assign({}, flatpickr.l10ns.default), l10n);
      };
      flatpickr.setDefaults = function (config) {
          flatpickr.defaultConfig = __assign(__assign({}, flatpickr.defaultConfig), config);
      };
      flatpickr.parseDate = createDateParser({});
      flatpickr.formatDate = createDateFormatter({});
      flatpickr.compareDates = compareDates;
      /* istanbul ignore next */
      if (typeof jQuery !== "undefined" && typeof jQuery.fn !== "undefined") {
          jQuery.fn.flatpickr = function (config) {
              return _flatpickr(this, config);
          };
      }
      // eslint-disable-next-line @typescript-eslint/camelcase
      Date.prototype.fp_incr = function (days) {
          return new Date(this.getFullYear(), this.getMonth(), this.getDate() + (typeof days === "string" ? parseInt(days, 10) : days));
      };
      if (typeof window !== "undefined") {
          window.flatpickr = flatpickr;
      }
  
      return flatpickr;
  
  })));
  
  
  /***/ }),
  
  /***/ "./node_modules/jquery/dist/jquery.js":
  /*!********************************************!*\
    !*** ./node_modules/jquery/dist/jquery.js ***!
    \********************************************/
  /*! no static exports found */
  /***/ (function(module, exports, __webpack_require__) {
  
  var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/*!
   * jQuery JavaScript Library v3.5.1
   * https://jquery.com/
   *
   * Includes Sizzle.js
   * https://sizzlejs.com/
   *
   * Copyright JS Foundation and other contributors
   * Released under the MIT license
   * https://jquery.org/license
   *
   * Date: 2020-05-04T22:49Z
   */
  ( function( global, factory ) {
  
  	"use strict";
  
  	if (  true && typeof module.exports === "object" ) {
  
  		// For CommonJS and CommonJS-like environments where a proper `window`
  		// is present, execute the factory and get jQuery.
  		// For environments that do not have a `window` with a `document`
  		// (such as Node.js), expose a factory as module.exports.
  		// This accentuates the need for the creation of a real `window`.
  		// e.g. var jQuery = require("jquery")(window);
  		// See ticket #14549 for more info.
  		module.exports = global.document ?
  			factory( global, true ) :
  			function( w ) {
  				if ( !w.document ) {
  					throw new Error( "jQuery requires a window with a document" );
  				}
  				return factory( w );
  			};
  	} else {
  		factory( global );
  	}
  
  // Pass this if window is not defined yet
  } )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) {
  
  // Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1
  // throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode
  // arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common
  // enough that all such attempts are guarded in a try block.
  "use strict";
  
  var arr = [];
  
  var getProto = Object.getPrototypeOf;
  
  var slice = arr.slice;
  
  var flat = arr.flat ? function( array ) {
  	return arr.flat.call( array );
  } : function( array ) {
  	return arr.concat.apply( [], array );
  };
  
  
  var push = arr.push;
  
  var indexOf = arr.indexOf;
  
  var class2type = {};
  
  var toString = class2type.toString;
  
  var hasOwn = class2type.hasOwnProperty;
  
  var fnToString = hasOwn.toString;
  
  var ObjectFunctionString = fnToString.call( Object );
  
  var support = {};
  
  var isFunction = function isFunction( obj ) {
  
        // Support: Chrome <=57, Firefox <=52
        // In some browsers, typeof returns "function" for HTML <object> elements
        // (i.e., `typeof document.createElement( "object" ) === "function"`).
        // We don't want to classify *any* DOM node as a function.
        return typeof obj === "function" && typeof obj.nodeType !== "number";
    };
  
  
  var isWindow = function isWindow( obj ) {
  		return obj != null && obj === obj.window;
  	};
  
  
  var document = window.document;
  
  
  
  	var preservedScriptAttributes = {
  		type: true,
  		src: true,
  		nonce: true,
  		noModule: true
  	};
  
  	function DOMEval( code, node, doc ) {
  		doc = doc || document;
  
  		var i, val,
  			script = doc.createElement( "script" );
  
  		script.text = code;
  		if ( node ) {
  			for ( i in preservedScriptAttributes ) {
  
  				// Support: Firefox 64+, Edge 18+
  				// Some browsers don't support the "nonce" property on scripts.
  				// On the other hand, just using `getAttribute` is not enough as
  				// the `nonce` attribute is reset to an empty string whenever it
  				// becomes browsing-context connected.
  				// See https://github.com/whatwg/html/issues/2369
  				// See https://html.spec.whatwg.org/#nonce-attributes
  				// The `node.getAttribute` check was added for the sake of
  				// `jQuery.globalEval` so that it can fake a nonce-containing node
  				// via an object.
  				val = node[ i ] || node.getAttribute && node.getAttribute( i );
  				if ( val ) {
  					script.setAttribute( i, val );
  				}
  			}
  		}
  		doc.head.appendChild( script ).parentNode.removeChild( script );
  	}
  
  
  function toType( obj ) {
  	if ( obj == null ) {
  		return obj + "";
  	}
  
  	// Support: Android <=2.3 only (functionish RegExp)
  	return typeof obj === "object" || typeof obj === "function" ?
  		class2type[ toString.call( obj ) ] || "object" :
  		typeof obj;
  }
  /* global Symbol */
  // Defining this global in .eslintrc.json would create a danger of using the global
  // unguarded in another place, it seems safer to define global only for this module
  
  
  
  var
  	version = "3.5.1",
  
  	// Define a local copy of jQuery
  	jQuery = function( selector, context ) {
  
  		// The jQuery object is actually just the init constructor 'enhanced'
  		// Need init if jQuery is called (just allow error to be thrown if not included)
  		return new jQuery.fn.init( selector, context );
  	};
  
  jQuery.fn = jQuery.prototype = {
  
  	// The current version of jQuery being used
  	jquery: version,
  
  	constructor: jQuery,
  
  	// The default length of a jQuery object is 0
  	length: 0,
  
  	toArray: function() {
  		return slice.call( this );
  	},
  
  	// Get the Nth element in the matched element set OR
  	// Get the whole matched element set as a clean array
  	get: function( num ) {
  
  		// Return all the elements in a clean array
  		if ( num == null ) {
  			return slice.call( this );
  		}
  
  		// Return just the one element from the set
  		return num < 0 ? this[ num + this.length ] : this[ num ];
  	},
  
  	// Take an array of elements and push it onto the stack
  	// (returning the new matched element set)
  	pushStack: function( elems ) {
  
  		// Build a new jQuery matched element set
  		var ret = jQuery.merge( this.constructor(), elems );
  
  		// Add the old object onto the stack (as a reference)
  		ret.prevObject = this;
  
  		// Return the newly-formed element set
  		return ret;
  	},
  
  	// Execute a callback for every element in the matched set.
  	each: function( callback ) {
  		return jQuery.each( this, callback );
  	},
  
  	map: function( callback ) {
  		return this.pushStack( jQuery.map( this, function( elem, i ) {
  			return callback.call( elem, i, elem );
  		} ) );
  	},
  
  	slice: function() {
  		return this.pushStack( slice.apply( this, arguments ) );
  	},
  
  	first: function() {
  		return this.eq( 0 );
  	},
  
  	last: function() {
  		return this.eq( -1 );
  	},
  
  	even: function() {
  		return this.pushStack( jQuery.grep( this, function( _elem, i ) {
  			return ( i + 1 ) % 2;
  		} ) );
  	},
  
  	odd: function() {
  		return this.pushStack( jQuery.grep( this, function( _elem, i ) {
  			return i % 2;
  		} ) );
  	},
  
  	eq: function( i ) {
  		var len = this.length,
  			j = +i + ( i < 0 ? len : 0 );
  		return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );
  	},
  
  	end: function() {
  		return this.prevObject || this.constructor();
  	},
  
  	// For internal use only.
  	// Behaves like an Array's method, not like a jQuery method.
  	push: push,
  	sort: arr.sort,
  	splice: arr.splice
  };
  
  jQuery.extend = jQuery.fn.extend = function() {
  	var options, name, src, copy, copyIsArray, clone,
  		target = arguments[ 0 ] || {},
  		i = 1,
  		length = arguments.length,
  		deep = false;
  
  	// Handle a deep copy situation
  	if ( typeof target === "boolean" ) {
  		deep = target;
  
  		// Skip the boolean and the target
  		target = arguments[ i ] || {};
  		i++;
  	}
  
  	// Handle case when target is a string or something (possible in deep copy)
  	if ( typeof target !== "object" && !isFunction( target ) ) {
  		target = {};
  	}
  
  	// Extend jQuery itself if only one argument is passed
  	if ( i === length ) {
  		target = this;
  		i--;
  	}
  
  	for ( ; i < length; i++ ) {
  
  		// Only deal with non-null/undefined values
  		if ( ( options = arguments[ i ] ) != null ) {
  
  			// Extend the base object
  			for ( name in options ) {
  				copy = options[ name ];
  
  				// Prevent Object.prototype pollution
  				// Prevent never-ending loop
  				if ( name === "__proto__" || target === copy ) {
  					continue;
  				}
  
  				// Recurse if we're merging plain objects or arrays
  				if ( deep && copy && ( jQuery.isPlainObject( copy ) ||
  					( copyIsArray = Array.isArray( copy ) ) ) ) {
  					src = target[ name ];
  
  					// Ensure proper type for the source value
  					if ( copyIsArray && !Array.isArray( src ) ) {
  						clone = [];
  					} else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) {
  						clone = {};
  					} else {
  						clone = src;
  					}
  					copyIsArray = false;
  
  					// Never move original objects, clone them
  					target[ name ] = jQuery.extend( deep, clone, copy );
  
  				// Don't bring in undefined values
  				} else if ( copy !== undefined ) {
  					target[ name ] = copy;
  				}
  			}
  		}
  	}
  
  	// Return the modified object
  	return target;
  };
  
  jQuery.extend( {
  
  	// Unique for each copy of jQuery on the page
  	expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),
  
  	// Assume jQuery is ready without the ready module
  	isReady: true,
  
  	error: function( msg ) {
  		throw new Error( msg );
  	},
  
  	noop: function() {},
  
  	isPlainObject: function( obj ) {
  		var proto, Ctor;
  
  		// Detect obvious negatives
  		// Use toString instead of jQuery.type to catch host objects
  		if ( !obj || toString.call( obj ) !== "[object Object]" ) {
  			return false;
  		}
  
  		proto = getProto( obj );
  
  		// Objects with no prototype (e.g., `Object.create( null )`) are plain
  		if ( !proto ) {
  			return true;
  		}
  
  		// Objects with prototype are plain iff they were constructed by a global Object function
  		Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor;
  		return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString;
  	},
  
  	isEmptyObject: function( obj ) {
  		var name;
  
  		for ( name in obj ) {
  			return false;
  		}
  		return true;
  	},
  
  	// Evaluates a script in a provided context; falls back to the global one
  	// if not specified.
  	globalEval: function( code, options, doc ) {
  		DOMEval( code, { nonce: options && options.nonce }, doc );
  	},
  
  	each: function( obj, callback ) {
  		var length, i = 0;
  
  		if ( isArrayLike( obj ) ) {
  			length = obj.length;
  			for ( ; i < length; i++ ) {
  				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
  					break;
  				}
  			}
  		} else {
  			for ( i in obj ) {
  				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
  					break;
  				}
  			}
  		}
  
  		return obj;
  	},
  
  	// results is for internal usage only
  	makeArray: function( arr, results ) {
  		var ret = results || [];
  
  		if ( arr != null ) {
  			if ( isArrayLike( Object( arr ) ) ) {
  				jQuery.merge( ret,
  					typeof arr === "string" ?
  					[ arr ] : arr
  				);
  			} else {
  				push.call( ret, arr );
  			}
  		}
  
  		return ret;
  	},
  
  	inArray: function( elem, arr, i ) {
  		return arr == null ? -1 : indexOf.call( arr, elem, i );
  	},
  
  	// Support: Android <=4.0 only, PhantomJS 1 only
  	// push.apply(_, arraylike) throws on ancient WebKit
  	merge: function( first, second ) {
  		var len = +second.length,
  			j = 0,
  			i = first.length;
  
  		for ( ; j < len; j++ ) {
  			first[ i++ ] = second[ j ];
  		}
  
  		first.length = i;
  
  		return first;
  	},
  
  	grep: function( elems, callback, invert ) {
  		var callbackInverse,
  			matches = [],
  			i = 0,
  			length = elems.length,
  			callbackExpect = !invert;
  
  		// Go through the array, only saving the items
  		// that pass the validator function
  		for ( ; i < length; i++ ) {
  			callbackInverse = !callback( elems[ i ], i );
  			if ( callbackInverse !== callbackExpect ) {
  				matches.push( elems[ i ] );
  			}
  		}
  
  		return matches;
  	},
  
  	// arg is for internal usage only
  	map: function( elems, callback, arg ) {
  		var length, value,
  			i = 0,
  			ret = [];
  
  		// Go through the array, translating each of the items to their new values
  		if ( isArrayLike( elems ) ) {
  			length = elems.length;
  			for ( ; i < length; i++ ) {
  				value = callback( elems[ i ], i, arg );
  
  				if ( value != null ) {
  					ret.push( value );
  				}
  			}
  
  		// Go through every key on the object,
  		} else {
  			for ( i in elems ) {
  				value = callback( elems[ i ], i, arg );
  
  				if ( value != null ) {
  					ret.push( value );
  				}
  			}
  		}
  
  		// Flatten any nested arrays
  		return flat( ret );
  	},
  
  	// A global GUID counter for objects
  	guid: 1,
  
  	// jQuery.support is not used in Core but other projects attach their
  	// properties to it so it needs to exist.
  	support: support
  } );
  
  if ( typeof Symbol === "function" ) {
  	jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];
  }
  
  // Populate the class2type map
  jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ),
  function( _i, name ) {
  	class2type[ "[object " + name + "]" ] = name.toLowerCase();
  } );
  
  function isArrayLike( obj ) {
  
  	// Support: real iOS 8.2 only (not reproducible in simulator)
  	// `in` check used to prevent JIT error (gh-2145)
  	// hasOwn isn't used here due to false negatives
  	// regarding Nodelist length in IE
  	var length = !!obj && "length" in obj && obj.length,
  		type = toType( obj );
  
  	if ( isFunction( obj ) || isWindow( obj ) ) {
  		return false;
  	}
  
  	return type === "array" || length === 0 ||
  		typeof length === "number" && length > 0 && ( length - 1 ) in obj;
  }
  var Sizzle =
  /*!
   * Sizzle CSS Selector Engine v2.3.5
   * https://sizzlejs.com/
   *
   * Copyright JS Foundation and other contributors
   * Released under the MIT license
   * https://js.foundation/
   *
   * Date: 2020-03-14
   */
  ( function( window ) {
  var i,
  	support,
  	Expr,
  	getText,
  	isXML,
  	tokenize,
  	compile,
  	select,
  	outermostContext,
  	sortInput,
  	hasDuplicate,
  
  	// Local document vars
  	setDocument,
  	document,
  	docElem,
  	documentIsHTML,
  	rbuggyQSA,
  	rbuggyMatches,
  	matches,
  	contains,
  
  	// Instance-specific data
  	expando = "sizzle" + 1 * new Date(),
  	preferredDoc = window.document,
  	dirruns = 0,
  	done = 0,
  	classCache = createCache(),
  	tokenCache = createCache(),
  	compilerCache = createCache(),
  	nonnativeSelectorCache = createCache(),
  	sortOrder = function( a, b ) {
  		if ( a === b ) {
  			hasDuplicate = true;
  		}
  		return 0;
  	},
  
  	// Instance methods
  	hasOwn = ( {} ).hasOwnProperty,
  	arr = [],
  	pop = arr.pop,
  	pushNative = arr.push,
  	push = arr.push,
  	slice = arr.slice,
  
  	// Use a stripped-down indexOf as it's faster than native
  	// https://jsperf.com/thor-indexof-vs-for/5
  	indexOf = function( list, elem ) {
  		var i = 0,
  			len = list.length;
  		for ( ; i < len; i++ ) {
  			if ( list[ i ] === elem ) {
  				return i;
  			}
  		}
  		return -1;
  	},
  
  	booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|" +
  		"ismap|loop|multiple|open|readonly|required|scoped",
  
  	// Regular expressions
  
  	// http://www.w3.org/TR/css3-selectors/#whitespace
  	whitespace = "[\\x20\\t\\r\\n\\f]",
  
  	// https://www.w3.org/TR/css-syntax-3/#ident-token-diagram
  	identifier = "(?:\\\\[\\da-fA-F]{1,6}" + whitespace +
  		"?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+",
  
  	// Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
  	attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
  
  		// Operator (capture 2)
  		"*([*^$|!~]?=)" + whitespace +
  
  		// "Attribute values must be CSS identifiers [capture 5]
  		// or strings [capture 3 or capture 4]"
  		"*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" +
  		whitespace + "*\\]",
  
  	pseudos = ":(" + identifier + ")(?:\\((" +
  
  		// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
  		// 1. quoted (capture 3; capture 4 or capture 5)
  		"('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
  
  		// 2. simple (capture 6)
  		"((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
  
  		// 3. anything else (capture 2)
  		".*" +
  		")\\)|)",
  
  	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
  	rwhitespace = new RegExp( whitespace + "+", "g" ),
  	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" +
  		whitespace + "+$", "g" ),
  
  	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
  	rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace +
  		"*" ),
  	rdescend = new RegExp( whitespace + "|>" ),
  
  	rpseudo = new RegExp( pseudos ),
  	ridentifier = new RegExp( "^" + identifier + "$" ),
  
  	matchExpr = {
  		"ID": new RegExp( "^#(" + identifier + ")" ),
  		"CLASS": new RegExp( "^\\.(" + identifier + ")" ),
  		"TAG": new RegExp( "^(" + identifier + "|[*])" ),
  		"ATTR": new RegExp( "^" + attributes ),
  		"PSEUDO": new RegExp( "^" + pseudos ),
  		"CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" +
  			whitespace + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" +
  			whitespace + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
  		"bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
  
  		// For use in libraries implementing .is()
  		// We use this for POS matching in `select`
  		"needsContext": new RegExp( "^" + whitespace +
  			"*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace +
  			"*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
  	},
  
  	rhtml = /HTML$/i,
  	rinputs = /^(?:input|select|textarea|button)$/i,
  	rheader = /^h\d$/i,
  
  	rnative = /^[^{]+\{\s*\[native \w/,
  
  	// Easily-parseable/retrievable ID or TAG or CLASS selectors
  	rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,
  
  	rsibling = /[+~]/,
  
  	// CSS escapes
  	// http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
  	runescape = new RegExp( "\\\\[\\da-fA-F]{1,6}" + whitespace + "?|\\\\([^\\r\\n\\f])", "g" ),
  	funescape = function( escape, nonHex ) {
  		var high = "0x" + escape.slice( 1 ) - 0x10000;
  
  		return nonHex ?
  
  			// Strip the backslash prefix from a non-hex escape sequence
  			nonHex :
  
  			// Replace a hexadecimal escape sequence with the encoded Unicode code point
  			// Support: IE <=11+
  			// For values outside the Basic Multilingual Plane (BMP), manually construct a
  			// surrogate pair
  			high < 0 ?
  				String.fromCharCode( high + 0x10000 ) :
  				String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
  	},
  
  	// CSS string/identifier serialization
  	// https://drafts.csswg.org/cssom/#common-serializing-idioms
  	rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g,
  	fcssescape = function( ch, asCodePoint ) {
  		if ( asCodePoint ) {
  
  			// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
  			if ( ch === "\0" ) {
  				return "\uFFFD";
  			}
  
  			// Control characters and (dependent upon position) numbers get escaped as code points
  			return ch.slice( 0, -1 ) + "\\" +
  				ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " ";
  		}
  
  		// Other potentially-special ASCII characters get backslash-escaped
  		return "\\" + ch;
  	},
  
  	// Used for iframes
  	// See setDocument()
  	// Removing the function wrapper causes a "Permission Denied"
  	// error in IE
  	unloadHandler = function() {
  		setDocument();
  	},
  
  	inDisabledFieldset = addCombinator(
  		function( elem ) {
  			return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset";
  		},
  		{ dir: "parentNode", next: "legend" }
  	);
  
  // Optimize for push.apply( _, NodeList )
  try {
  	push.apply(
  		( arr = slice.call( preferredDoc.childNodes ) ),
  		preferredDoc.childNodes
  	);
  
  	// Support: Android<4.0
  	// Detect silently failing push.apply
  	// eslint-disable-next-line no-unused-expressions
  	arr[ preferredDoc.childNodes.length ].nodeType;
  } catch ( e ) {
  	push = { apply: arr.length ?
  
  		// Leverage slice if possible
  		function( target, els ) {
  			pushNative.apply( target, slice.call( els ) );
  		} :
  
  		// Support: IE<9
  		// Otherwise append directly
  		function( target, els ) {
  			var j = target.length,
  				i = 0;
  
  			// Can't trust NodeList.length
  			while ( ( target[ j++ ] = els[ i++ ] ) ) {}
  			target.length = j - 1;
  		}
  	};
  }
  
  function Sizzle( selector, context, results, seed ) {
  	var m, i, elem, nid, match, groups, newSelector,
  		newContext = context && context.ownerDocument,
  
  		// nodeType defaults to 9, since context defaults to document
  		nodeType = context ? context.nodeType : 9;
  
  	results = results || [];
  
  	// Return early from calls with invalid selector or context
  	if ( typeof selector !== "string" || !selector ||
  		nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {
  
  		return results;
  	}
  
  	// Try to shortcut find operations (as opposed to filters) in HTML documents
  	if ( !seed ) {
  		setDocument( context );
  		context = context || document;
  
  		if ( documentIsHTML ) {
  
  			// If the selector is sufficiently simple, try using a "get*By*" DOM method
  			// (excepting DocumentFragment context, where the methods don't exist)
  			if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) {
  
  				// ID selector
  				if ( ( m = match[ 1 ] ) ) {
  
  					// Document context
  					if ( nodeType === 9 ) {
  						if ( ( elem = context.getElementById( m ) ) ) {
  
  							// Support: IE, Opera, Webkit
  							// TODO: identify versions
  							// getElementById can match elements by name instead of ID
  							if ( elem.id === m ) {
  								results.push( elem );
  								return results;
  							}
  						} else {
  							return results;
  						}
  
  					// Element context
  					} else {
  
  						// Support: IE, Opera, Webkit
  						// TODO: identify versions
  						// getElementById can match elements by name instead of ID
  						if ( newContext && ( elem = newContext.getElementById( m ) ) &&
  							contains( context, elem ) &&
  							elem.id === m ) {
  
  							results.push( elem );
  							return results;
  						}
  					}
  
  				// Type selector
  				} else if ( match[ 2 ] ) {
  					push.apply( results, context.getElementsByTagName( selector ) );
  					return results;
  
  				// Class selector
  				} else if ( ( m = match[ 3 ] ) && support.getElementsByClassName &&
  					context.getElementsByClassName ) {
  
  					push.apply( results, context.getElementsByClassName( m ) );
  					return results;
  				}
  			}
  
  			// Take advantage of querySelectorAll
  			if ( support.qsa &&
  				!nonnativeSelectorCache[ selector + " " ] &&
  				( !rbuggyQSA || !rbuggyQSA.test( selector ) ) &&
  
  				// Support: IE 8 only
  				// Exclude object elements
  				( nodeType !== 1 || context.nodeName.toLowerCase() !== "object" ) ) {
  
  				newSelector = selector;
  				newContext = context;
  
  				// qSA considers elements outside a scoping root when evaluating child or
  				// descendant combinators, which is not what we want.
  				// In such cases, we work around the behavior by prefixing every selector in the
  				// list with an ID selector referencing the scope context.
  				// The technique has to be used as well when a leading combinator is used
  				// as such selectors are not recognized by querySelectorAll.
  				// Thanks to Andrew Dupont for this technique.
  				if ( nodeType === 1 &&
  					( rdescend.test( selector ) || rcombinators.test( selector ) ) ) {
  
  					// Expand context for sibling selectors
  					newContext = rsibling.test( selector ) && testContext( context.parentNode ) ||
  						context;
  
  					// We can use :scope instead of the ID hack if the browser
  					// supports it & if we're not changing the context.
  					if ( newContext !== context || !support.scope ) {
  
  						// Capture the context ID, setting it first if necessary
  						if ( ( nid = context.getAttribute( "id" ) ) ) {
  							nid = nid.replace( rcssescape, fcssescape );
  						} else {
  							context.setAttribute( "id", ( nid = expando ) );
  						}
  					}
  
  					// Prefix every selector in the list
  					groups = tokenize( selector );
  					i = groups.length;
  					while ( i-- ) {
  						groups[ i ] = ( nid ? "#" + nid : ":scope" ) + " " +
  							toSelector( groups[ i ] );
  					}
  					newSelector = groups.join( "," );
  				}
  
  				try {
  					push.apply( results,
  						newContext.querySelectorAll( newSelector )
  					);
  					return results;
  				} catch ( qsaError ) {
  					nonnativeSelectorCache( selector, true );
  				} finally {
  					if ( nid === expando ) {
  						context.removeAttribute( "id" );
  					}
  				}
  			}
  		}
  	}
  
  	// All others
  	return select( selector.replace( rtrim, "$1" ), context, results, seed );
  }
  
  /**
   * Create key-value caches of limited size
   * @returns {function(string, object)} Returns the Object data after storing it on itself with
   *	property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
   *	deleting the oldest entry
   */
  function createCache() {
  	var keys = [];
  
  	function cache( key, value ) {
  
  		// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
  		if ( keys.push( key + " " ) > Expr.cacheLength ) {
  
  			// Only keep the most recent entries
  			delete cache[ keys.shift() ];
  		}
  		return ( cache[ key + " " ] = value );
  	}
  	return cache;
  }
  
  /**
   * Mark a function for special use by Sizzle
   * @param {Function} fn The function to mark
   */
  function markFunction( fn ) {
  	fn[ expando ] = true;
  	return fn;
  }
  
  /**
   * Support testing using an element
   * @param {Function} fn Passed the created element and returns a boolean result
   */
  function assert( fn ) {
  	var el = document.createElement( "fieldset" );
  
  	try {
  		return !!fn( el );
  	} catch ( e ) {
  		return false;
  	} finally {
  
  		// Remove from its parent by default
  		if ( el.parentNode ) {
  			el.parentNode.removeChild( el );
  		}
  
  		// release memory in IE
  		el = null;
  	}
  }
  
  /**
   * Adds the same handler for all of the specified attrs
   * @param {String} attrs Pipe-separated list of attributes
   * @param {Function} handler The method that will be applied
   */
  function addHandle( attrs, handler ) {
  	var arr = attrs.split( "|" ),
  		i = arr.length;
  
  	while ( i-- ) {
  		Expr.attrHandle[ arr[ i ] ] = handler;
  	}
  }
  
  /**
   * Checks document order of two siblings
   * @param {Element} a
   * @param {Element} b
   * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
   */
  function siblingCheck( a, b ) {
  	var cur = b && a,
  		diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
  			a.sourceIndex - b.sourceIndex;
  
  	// Use IE sourceIndex if available on both nodes
  	if ( diff ) {
  		return diff;
  	}
  
  	// Check if b follows a
  	if ( cur ) {
  		while ( ( cur = cur.nextSibling ) ) {
  			if ( cur === b ) {
  				return -1;
  			}
  		}
  	}
  
  	return a ? 1 : -1;
  }
  
  /**
   * Returns a function to use in pseudos for input types
   * @param {String} type
   */
  function createInputPseudo( type ) {
  	return function( elem ) {
  		var name = elem.nodeName.toLowerCase();
  		return name === "input" && elem.type === type;
  	};
  }
  
  /**
   * Returns a function to use in pseudos for buttons
   * @param {String} type
   */
  function createButtonPseudo( type ) {
  	return function( elem ) {
  		var name = elem.nodeName.toLowerCase();
  		return ( name === "input" || name === "button" ) && elem.type === type;
  	};
  }
  
  /**
   * Returns a function to use in pseudos for :enabled/:disabled
   * @param {Boolean} disabled true for :disabled; false for :enabled
   */
  function createDisabledPseudo( disabled ) {
  
  	// Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable
  	return function( elem ) {
  
  		// Only certain elements can match :enabled or :disabled
  		// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
  		// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
  		if ( "form" in elem ) {
  
  			// Check for inherited disabledness on relevant non-disabled elements:
  			// * listed form-associated elements in a disabled fieldset
  			//   https://html.spec.whatwg.org/multipage/forms.html#category-listed
  			//   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled
  			// * option elements in a disabled optgroup
  			//   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled
  			// All such elements have a "form" property.
  			if ( elem.parentNode && elem.disabled === false ) {
  
  				// Option elements defer to a parent optgroup if present
  				if ( "label" in elem ) {
  					if ( "label" in elem.parentNode ) {
  						return elem.parentNode.disabled === disabled;
  					} else {
  						return elem.disabled === disabled;
  					}
  				}
  
  				// Support: IE 6 - 11
  				// Use the isDisabled shortcut property to check for disabled fieldset ancestors
  				return elem.isDisabled === disabled ||
  
  					// Where there is no isDisabled, check manually
  					/* jshint -W018 */
  					elem.isDisabled !== !disabled &&
  					inDisabledFieldset( elem ) === disabled;
  			}
  
  			return elem.disabled === disabled;
  
  		// Try to winnow out elements that can't be disabled before trusting the disabled property.
  		// Some victims get caught in our net (label, legend, menu, track), but it shouldn't
  		// even exist on them, let alone have a boolean value.
  		} else if ( "label" in elem ) {
  			return elem.disabled === disabled;
  		}
  
  		// Remaining elements are neither :enabled nor :disabled
  		return false;
  	};
  }
  
  /**
   * Returns a function to use in pseudos for positionals
   * @param {Function} fn
   */
  function createPositionalPseudo( fn ) {
  	return markFunction( function( argument ) {
  		argument = +argument;
  		return markFunction( function( seed, matches ) {
  			var j,
  				matchIndexes = fn( [], seed.length, argument ),
  				i = matchIndexes.length;
  
  			// Match elements found at the specified indexes
  			while ( i-- ) {
  				if ( seed[ ( j = matchIndexes[ i ] ) ] ) {
  					seed[ j ] = !( matches[ j ] = seed[ j ] );
  				}
  			}
  		} );
  	} );
  }
  
  /**
   * Checks a node for validity as a Sizzle context
   * @param {Element|Object=} context
   * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
   */
  function testContext( context ) {
  	return context && typeof context.getElementsByTagName !== "undefined" && context;
  }
  
  // Expose support vars for convenience
  support = Sizzle.support = {};
  
  /**
   * Detects XML nodes
   * @param {Element|Object} elem An element or a document
   * @returns {Boolean} True iff elem is a non-HTML XML node
   */
  isXML = Sizzle.isXML = function( elem ) {
  	var namespace = elem.namespaceURI,
  		docElem = ( elem.ownerDocument || elem ).documentElement;
  
  	// Support: IE <=8
  	// Assume HTML when documentElement doesn't yet exist, such as inside loading iframes
  	// https://bugs.jquery.com/ticket/4833
  	return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" );
  };
  
  /**
   * Sets document-related variables once based on the current document
   * @param {Element|Object} [doc] An element or document object to use to set the document
   * @returns {Object} Returns the current document
   */
  setDocument = Sizzle.setDocument = function( node ) {
  	var hasCompare, subWindow,
  		doc = node ? node.ownerDocument || node : preferredDoc;
  
  	// Return early if doc is invalid or already selected
  	// Support: IE 11+, Edge 17 - 18+
  	// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  	// two documents; shallow comparisons work.
  	// eslint-disable-next-line eqeqeq
  	if ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) {
  		return document;
  	}
  
  	// Update global variables
  	document = doc;
  	docElem = document.documentElement;
  	documentIsHTML = !isXML( document );
  
  	// Support: IE 9 - 11+, Edge 12 - 18+
  	// Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
  	// Support: IE 11+, Edge 17 - 18+
  	// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  	// two documents; shallow comparisons work.
  	// eslint-disable-next-line eqeqeq
  	if ( preferredDoc != document &&
  		( subWindow = document.defaultView ) && subWindow.top !== subWindow ) {
  
  		// Support: IE 11, Edge
  		if ( subWindow.addEventListener ) {
  			subWindow.addEventListener( "unload", unloadHandler, false );
  
  		// Support: IE 9 - 10 only
  		} else if ( subWindow.attachEvent ) {
  			subWindow.attachEvent( "onunload", unloadHandler );
  		}
  	}
  
  	// Support: IE 8 - 11+, Edge 12 - 18+, Chrome <=16 - 25 only, Firefox <=3.6 - 31 only,
  	// Safari 4 - 5 only, Opera <=11.6 - 12.x only
  	// IE/Edge & older browsers don't support the :scope pseudo-class.
  	// Support: Safari 6.0 only
  	// Safari 6.0 supports :scope but it's an alias of :root there.
  	support.scope = assert( function( el ) {
  		docElem.appendChild( el ).appendChild( document.createElement( "div" ) );
  		return typeof el.querySelectorAll !== "undefined" &&
  			!el.querySelectorAll( ":scope fieldset div" ).length;
  	} );
  
  	/* Attributes
  	---------------------------------------------------------------------- */
  
  	// Support: IE<8
  	// Verify that getAttribute really returns attributes and not properties
  	// (excepting IE8 booleans)
  	support.attributes = assert( function( el ) {
  		el.className = "i";
  		return !el.getAttribute( "className" );
  	} );
  
  	/* getElement(s)By*
  	---------------------------------------------------------------------- */
  
  	// Check if getElementsByTagName("*") returns only elements
  	support.getElementsByTagName = assert( function( el ) {
  		el.appendChild( document.createComment( "" ) );
  		return !el.getElementsByTagName( "*" ).length;
  	} );
  
  	// Support: IE<9
  	support.getElementsByClassName = rnative.test( document.getElementsByClassName );
  
  	// Support: IE<10
  	// Check if getElementById returns elements by name
  	// The broken getElementById methods don't pick up programmatically-set names,
  	// so use a roundabout getElementsByName test
  	support.getById = assert( function( el ) {
  		docElem.appendChild( el ).id = expando;
  		return !document.getElementsByName || !document.getElementsByName( expando ).length;
  	} );
  
  	// ID filter and find
  	if ( support.getById ) {
  		Expr.filter[ "ID" ] = function( id ) {
  			var attrId = id.replace( runescape, funescape );
  			return function( elem ) {
  				return elem.getAttribute( "id" ) === attrId;
  			};
  		};
  		Expr.find[ "ID" ] = function( id, context ) {
  			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
  				var elem = context.getElementById( id );
  				return elem ? [ elem ] : [];
  			}
  		};
  	} else {
  		Expr.filter[ "ID" ] =  function( id ) {
  			var attrId = id.replace( runescape, funescape );
  			return function( elem ) {
  				var node = typeof elem.getAttributeNode !== "undefined" &&
  					elem.getAttributeNode( "id" );
  				return node && node.value === attrId;
  			};
  		};
  
  		// Support: IE 6 - 7 only
  		// getElementById is not reliable as a find shortcut
  		Expr.find[ "ID" ] = function( id, context ) {
  			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
  				var node, i, elems,
  					elem = context.getElementById( id );
  
  				if ( elem ) {
  
  					// Verify the id attribute
  					node = elem.getAttributeNode( "id" );
  					if ( node && node.value === id ) {
  						return [ elem ];
  					}
  
  					// Fall back on getElementsByName
  					elems = context.getElementsByName( id );
  					i = 0;
  					while ( ( elem = elems[ i++ ] ) ) {
  						node = elem.getAttributeNode( "id" );
  						if ( node && node.value === id ) {
  							return [ elem ];
  						}
  					}
  				}
  
  				return [];
  			}
  		};
  	}
  
  	// Tag
  	Expr.find[ "TAG" ] = support.getElementsByTagName ?
  		function( tag, context ) {
  			if ( typeof context.getElementsByTagName !== "undefined" ) {
  				return context.getElementsByTagName( tag );
  
  			// DocumentFragment nodes don't have gEBTN
  			} else if ( support.qsa ) {
  				return context.querySelectorAll( tag );
  			}
  		} :
  
  		function( tag, context ) {
  			var elem,
  				tmp = [],
  				i = 0,
  
  				// By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
  				results = context.getElementsByTagName( tag );
  
  			// Filter out possible comments
  			if ( tag === "*" ) {
  				while ( ( elem = results[ i++ ] ) ) {
  					if ( elem.nodeType === 1 ) {
  						tmp.push( elem );
  					}
  				}
  
  				return tmp;
  			}
  			return results;
  		};
  
  	// Class
  	Expr.find[ "CLASS" ] = support.getElementsByClassName && function( className, context ) {
  		if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) {
  			return context.getElementsByClassName( className );
  		}
  	};
  
  	/* QSA/matchesSelector
  	---------------------------------------------------------------------- */
  
  	// QSA and matchesSelector support
  
  	// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
  	rbuggyMatches = [];
  
  	// qSa(:focus) reports false when true (Chrome 21)
  	// We allow this because of a bug in IE8/9 that throws an error
  	// whenever `document.activeElement` is accessed on an iframe
  	// So, we allow :focus to pass through QSA all the time to avoid the IE error
  	// See https://bugs.jquery.com/ticket/13378
  	rbuggyQSA = [];
  
  	if ( ( support.qsa = rnative.test( document.querySelectorAll ) ) ) {
  
  		// Build QSA regex
  		// Regex strategy adopted from Diego Perini
  		assert( function( el ) {
  
  			var input;
  
  			// Select is set to empty string on purpose
  			// This is to test IE's treatment of not explicitly
  			// setting a boolean content attribute,
  			// since its presence should be enough
  			// https://bugs.jquery.com/ticket/12359
  			docElem.appendChild( el ).innerHTML = "<a id='" + expando + "'></a>" +
  				"<select id='" + expando + "-\r\\' msallowcapture=''>" +
  				"<option selected=''></option></select>";
  
  			// Support: IE8, Opera 11-12.16
  			// Nothing should be selected when empty strings follow ^= or $= or *=
  			// The test attribute must be unknown in Opera but "safe" for WinRT
  			// https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
  			if ( el.querySelectorAll( "[msallowcapture^='']" ).length ) {
  				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
  			}
  
  			// Support: IE8
  			// Boolean attributes and "value" are not treated correctly
  			if ( !el.querySelectorAll( "[selected]" ).length ) {
  				rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
  			}
  
  			// Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+
  			if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) {
  				rbuggyQSA.push( "~=" );
  			}
  
  			// Support: IE 11+, Edge 15 - 18+
  			// IE 11/Edge don't find elements on a `[name='']` query in some cases.
  			// Adding a temporary attribute to the document before the selection works
  			// around the issue.
  			// Interestingly, IE 10 & older don't seem to have the issue.
  			input = document.createElement( "input" );
  			input.setAttribute( "name", "" );
  			el.appendChild( input );
  			if ( !el.querySelectorAll( "[name='']" ).length ) {
  				rbuggyQSA.push( "\\[" + whitespace + "*name" + whitespace + "*=" +
  					whitespace + "*(?:''|\"\")" );
  			}
  
  			// Webkit/Opera - :checked should return selected option elements
  			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
  			// IE8 throws error here and will not see later tests
  			if ( !el.querySelectorAll( ":checked" ).length ) {
  				rbuggyQSA.push( ":checked" );
  			}
  
  			// Support: Safari 8+, iOS 8+
  			// https://bugs.webkit.org/show_bug.cgi?id=136851
  			// In-page `selector#id sibling-combinator selector` fails
  			if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) {
  				rbuggyQSA.push( ".#.+[+~]" );
  			}
  
  			// Support: Firefox <=3.6 - 5 only
  			// Old Firefox doesn't throw on a badly-escaped identifier.
  			el.querySelectorAll( "\\\f" );
  			rbuggyQSA.push( "[\\r\\n\\f]" );
  		} );
  
  		assert( function( el ) {
  			el.innerHTML = "<a href='' disabled='disabled'></a>" +
  				"<select disabled='disabled'><option/></select>";
  
  			// Support: Windows 8 Native Apps
  			// The type and name attributes are restricted during .innerHTML assignment
  			var input = document.createElement( "input" );
  			input.setAttribute( "type", "hidden" );
  			el.appendChild( input ).setAttribute( "name", "D" );
  
  			// Support: IE8
  			// Enforce case-sensitivity of name attribute
  			if ( el.querySelectorAll( "[name=d]" ).length ) {
  				rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" );
  			}
  
  			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
  			// IE8 throws error here and will not see later tests
  			if ( el.querySelectorAll( ":enabled" ).length !== 2 ) {
  				rbuggyQSA.push( ":enabled", ":disabled" );
  			}
  
  			// Support: IE9-11+
  			// IE's :disabled selector does not pick up the children of disabled fieldsets
  			docElem.appendChild( el ).disabled = true;
  			if ( el.querySelectorAll( ":disabled" ).length !== 2 ) {
  				rbuggyQSA.push( ":enabled", ":disabled" );
  			}
  
  			// Support: Opera 10 - 11 only
  			// Opera 10-11 does not throw on post-comma invalid pseudos
  			el.querySelectorAll( "*,:x" );
  			rbuggyQSA.push( ",.*:" );
  		} );
  	}
  
  	if ( ( support.matchesSelector = rnative.test( ( matches = docElem.matches ||
  		docElem.webkitMatchesSelector ||
  		docElem.mozMatchesSelector ||
  		docElem.oMatchesSelector ||
  		docElem.msMatchesSelector ) ) ) ) {
  
  		assert( function( el ) {
  
  			// Check to see if it's possible to do matchesSelector
  			// on a disconnected node (IE 9)
  			support.disconnectedMatch = matches.call( el, "*" );
  
  			// This should fail with an exception
  			// Gecko does not error, returns false instead
  			matches.call( el, "[s!='']:x" );
  			rbuggyMatches.push( "!=", pseudos );
  		} );
  	}
  
  	rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( "|" ) );
  	rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join( "|" ) );
  
  	/* Contains
  	---------------------------------------------------------------------- */
  	hasCompare = rnative.test( docElem.compareDocumentPosition );
  
  	// Element contains another
  	// Purposefully self-exclusive
  	// As in, an element does not contain itself
  	contains = hasCompare || rnative.test( docElem.contains ) ?
  		function( a, b ) {
  			var adown = a.nodeType === 9 ? a.documentElement : a,
  				bup = b && b.parentNode;
  			return a === bup || !!( bup && bup.nodeType === 1 && (
  				adown.contains ?
  					adown.contains( bup ) :
  					a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
  			) );
  		} :
  		function( a, b ) {
  			if ( b ) {
  				while ( ( b = b.parentNode ) ) {
  					if ( b === a ) {
  						return true;
  					}
  				}
  			}
  			return false;
  		};
  
  	/* Sorting
  	---------------------------------------------------------------------- */
  
  	// Document order sorting
  	sortOrder = hasCompare ?
  	function( a, b ) {
  
  		// Flag for duplicate removal
  		if ( a === b ) {
  			hasDuplicate = true;
  			return 0;
  		}
  
  		// Sort on method existence if only one input has compareDocumentPosition
  		var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
  		if ( compare ) {
  			return compare;
  		}
  
  		// Calculate position if both inputs belong to the same document
  		// Support: IE 11+, Edge 17 - 18+
  		// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  		// two documents; shallow comparisons work.
  		// eslint-disable-next-line eqeqeq
  		compare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ?
  			a.compareDocumentPosition( b ) :
  
  			// Otherwise we know they are disconnected
  			1;
  
  		// Disconnected nodes
  		if ( compare & 1 ||
  			( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) {
  
  			// Choose the first element that is related to our preferred document
  			// Support: IE 11+, Edge 17 - 18+
  			// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  			// two documents; shallow comparisons work.
  			// eslint-disable-next-line eqeqeq
  			if ( a == document || a.ownerDocument == preferredDoc &&
  				contains( preferredDoc, a ) ) {
  				return -1;
  			}
  
  			// Support: IE 11+, Edge 17 - 18+
  			// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  			// two documents; shallow comparisons work.
  			// eslint-disable-next-line eqeqeq
  			if ( b == document || b.ownerDocument == preferredDoc &&
  				contains( preferredDoc, b ) ) {
  				return 1;
  			}
  
  			// Maintain original order
  			return sortInput ?
  				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
  				0;
  		}
  
  		return compare & 4 ? -1 : 1;
  	} :
  	function( a, b ) {
  
  		// Exit early if the nodes are identical
  		if ( a === b ) {
  			hasDuplicate = true;
  			return 0;
  		}
  
  		var cur,
  			i = 0,
  			aup = a.parentNode,
  			bup = b.parentNode,
  			ap = [ a ],
  			bp = [ b ];
  
  		// Parentless nodes are either documents or disconnected
  		if ( !aup || !bup ) {
  
  			// Support: IE 11+, Edge 17 - 18+
  			// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  			// two documents; shallow comparisons work.
  			/* eslint-disable eqeqeq */
  			return a == document ? -1 :
  				b == document ? 1 :
  				/* eslint-enable eqeqeq */
  				aup ? -1 :
  				bup ? 1 :
  				sortInput ?
  				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
  				0;
  
  		// If the nodes are siblings, we can do a quick check
  		} else if ( aup === bup ) {
  			return siblingCheck( a, b );
  		}
  
  		// Otherwise we need full lists of their ancestors for comparison
  		cur = a;
  		while ( ( cur = cur.parentNode ) ) {
  			ap.unshift( cur );
  		}
  		cur = b;
  		while ( ( cur = cur.parentNode ) ) {
  			bp.unshift( cur );
  		}
  
  		// Walk down the tree looking for a discrepancy
  		while ( ap[ i ] === bp[ i ] ) {
  			i++;
  		}
  
  		return i ?
  
  			// Do a sibling check if the nodes have a common ancestor
  			siblingCheck( ap[ i ], bp[ i ] ) :
  
  			// Otherwise nodes in our document sort first
  			// Support: IE 11+, Edge 17 - 18+
  			// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  			// two documents; shallow comparisons work.
  			/* eslint-disable eqeqeq */
  			ap[ i ] == preferredDoc ? -1 :
  			bp[ i ] == preferredDoc ? 1 :
  			/* eslint-enable eqeqeq */
  			0;
  	};
  
  	return document;
  };
  
  Sizzle.matches = function( expr, elements ) {
  	return Sizzle( expr, null, null, elements );
  };
  
  Sizzle.matchesSelector = function( elem, expr ) {
  	setDocument( elem );
  
  	if ( support.matchesSelector && documentIsHTML &&
  		!nonnativeSelectorCache[ expr + " " ] &&
  		( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
  		( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {
  
  		try {
  			var ret = matches.call( elem, expr );
  
  			// IE 9's matchesSelector returns false on disconnected nodes
  			if ( ret || support.disconnectedMatch ||
  
  				// As well, disconnected nodes are said to be in a document
  				// fragment in IE 9
  				elem.document && elem.document.nodeType !== 11 ) {
  				return ret;
  			}
  		} catch ( e ) {
  			nonnativeSelectorCache( expr, true );
  		}
  	}
  
  	return Sizzle( expr, document, null, [ elem ] ).length > 0;
  };
  
  Sizzle.contains = function( context, elem ) {
  
  	// Set document vars if needed
  	// Support: IE 11+, Edge 17 - 18+
  	// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  	// two documents; shallow comparisons work.
  	// eslint-disable-next-line eqeqeq
  	if ( ( context.ownerDocument || context ) != document ) {
  		setDocument( context );
  	}
  	return contains( context, elem );
  };
  
  Sizzle.attr = function( elem, name ) {
  
  	// Set document vars if needed
  	// Support: IE 11+, Edge 17 - 18+
  	// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  	// two documents; shallow comparisons work.
  	// eslint-disable-next-line eqeqeq
  	if ( ( elem.ownerDocument || elem ) != document ) {
  		setDocument( elem );
  	}
  
  	var fn = Expr.attrHandle[ name.toLowerCase() ],
  
  		// Don't get fooled by Object.prototype properties (jQuery #13807)
  		val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
  			fn( elem, name, !documentIsHTML ) :
  			undefined;
  
  	return val !== undefined ?
  		val :
  		support.attributes || !documentIsHTML ?
  			elem.getAttribute( name ) :
  			( val = elem.getAttributeNode( name ) ) && val.specified ?
  				val.value :
  				null;
  };
  
  Sizzle.escape = function( sel ) {
  	return ( sel + "" ).replace( rcssescape, fcssescape );
  };
  
  Sizzle.error = function( msg ) {
  	throw new Error( "Syntax error, unrecognized expression: " + msg );
  };
  
  /**
   * Document sorting and removing duplicates
   * @param {ArrayLike} results
   */
  Sizzle.uniqueSort = function( results ) {
  	var elem,
  		duplicates = [],
  		j = 0,
  		i = 0;
  
  	// Unless we *know* we can detect duplicates, assume their presence
  	hasDuplicate = !support.detectDuplicates;
  	sortInput = !support.sortStable && results.slice( 0 );
  	results.sort( sortOrder );
  
  	if ( hasDuplicate ) {
  		while ( ( elem = results[ i++ ] ) ) {
  			if ( elem === results[ i ] ) {
  				j = duplicates.push( i );
  			}
  		}
  		while ( j-- ) {
  			results.splice( duplicates[ j ], 1 );
  		}
  	}
  
  	// Clear input after sorting to release objects
  	// See https://github.com/jquery/sizzle/pull/225
  	sortInput = null;
  
  	return results;
  };
  
  /**
   * Utility function for retrieving the text value of an array of DOM nodes
   * @param {Array|Element} elem
   */
  getText = Sizzle.getText = function( elem ) {
  	var node,
  		ret = "",
  		i = 0,
  		nodeType = elem.nodeType;
  
  	if ( !nodeType ) {
  
  		// If no nodeType, this is expected to be an array
  		while ( ( node = elem[ i++ ] ) ) {
  
  			// Do not traverse comment nodes
  			ret += getText( node );
  		}
  	} else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
  
  		// Use textContent for elements
  		// innerText usage removed for consistency of new lines (jQuery #11153)
  		if ( typeof elem.textContent === "string" ) {
  			return elem.textContent;
  		} else {
  
  			// Traverse its children
  			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
  				ret += getText( elem );
  			}
  		}
  	} else if ( nodeType === 3 || nodeType === 4 ) {
  		return elem.nodeValue;
  	}
  
  	// Do not include comment or processing instruction nodes
  
  	return ret;
  };
  
  Expr = Sizzle.selectors = {
  
  	// Can be adjusted by the user
  	cacheLength: 50,
  
  	createPseudo: markFunction,
  
  	match: matchExpr,
  
  	attrHandle: {},
  
  	find: {},
  
  	relative: {
  		">": { dir: "parentNode", first: true },
  		" ": { dir: "parentNode" },
  		"+": { dir: "previousSibling", first: true },
  		"~": { dir: "previousSibling" }
  	},
  
  	preFilter: {
  		"ATTR": function( match ) {
  			match[ 1 ] = match[ 1 ].replace( runescape, funescape );
  
  			// Move the given value to match[3] whether quoted or unquoted
  			match[ 3 ] = ( match[ 3 ] || match[ 4 ] ||
  				match[ 5 ] || "" ).replace( runescape, funescape );
  
  			if ( match[ 2 ] === "~=" ) {
  				match[ 3 ] = " " + match[ 3 ] + " ";
  			}
  
  			return match.slice( 0, 4 );
  		},
  
  		"CHILD": function( match ) {
  
  			/* matches from matchExpr["CHILD"]
  				1 type (only|nth|...)
  				2 what (child|of-type)
  				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
  				4 xn-component of xn+y argument ([+-]?\d*n|)
  				5 sign of xn-component
  				6 x of xn-component
  				7 sign of y-component
  				8 y of y-component
  			*/
  			match[ 1 ] = match[ 1 ].toLowerCase();
  
  			if ( match[ 1 ].slice( 0, 3 ) === "nth" ) {
  
  				// nth-* requires argument
  				if ( !match[ 3 ] ) {
  					Sizzle.error( match[ 0 ] );
  				}
  
  				// numeric x and y parameters for Expr.filter.CHILD
  				// remember that false/true cast respectively to 0/1
  				match[ 4 ] = +( match[ 4 ] ?
  					match[ 5 ] + ( match[ 6 ] || 1 ) :
  					2 * ( match[ 3 ] === "even" || match[ 3 ] === "odd" ) );
  				match[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === "odd" );
  
  				// other types prohibit arguments
  			} else if ( match[ 3 ] ) {
  				Sizzle.error( match[ 0 ] );
  			}
  
  			return match;
  		},
  
  		"PSEUDO": function( match ) {
  			var excess,
  				unquoted = !match[ 6 ] && match[ 2 ];
  
  			if ( matchExpr[ "CHILD" ].test( match[ 0 ] ) ) {
  				return null;
  			}
  
  			// Accept quoted arguments as-is
  			if ( match[ 3 ] ) {
  				match[ 2 ] = match[ 4 ] || match[ 5 ] || "";
  
  			// Strip excess characters from unquoted arguments
  			} else if ( unquoted && rpseudo.test( unquoted ) &&
  
  				// Get excess from tokenize (recursively)
  				( excess = tokenize( unquoted, true ) ) &&
  
  				// advance to the next closing parenthesis
  				( excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length ) ) {
  
  				// excess is a negative index
  				match[ 0 ] = match[ 0 ].slice( 0, excess );
  				match[ 2 ] = unquoted.slice( 0, excess );
  			}
  
  			// Return only captures needed by the pseudo filter method (type and argument)
  			return match.slice( 0, 3 );
  		}
  	},
  
  	filter: {
  
  		"TAG": function( nodeNameSelector ) {
  			var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
  			return nodeNameSelector === "*" ?
  				function() {
  					return true;
  				} :
  				function( elem ) {
  					return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
  				};
  		},
  
  		"CLASS": function( className ) {
  			var pattern = classCache[ className + " " ];
  
  			return pattern ||
  				( pattern = new RegExp( "(^|" + whitespace +
  					")" + className + "(" + whitespace + "|$)" ) ) && classCache(
  						className, function( elem ) {
  							return pattern.test(
  								typeof elem.className === "string" && elem.className ||
  								typeof elem.getAttribute !== "undefined" &&
  									elem.getAttribute( "class" ) ||
  								""
  							);
  				} );
  		},
  
  		"ATTR": function( name, operator, check ) {
  			return function( elem ) {
  				var result = Sizzle.attr( elem, name );
  
  				if ( result == null ) {
  					return operator === "!=";
  				}
  				if ( !operator ) {
  					return true;
  				}
  
  				result += "";
  
  				/* eslint-disable max-len */
  
  				return operator === "=" ? result === check :
  					operator === "!=" ? result !== check :
  					operator === "^=" ? check && result.indexOf( check ) === 0 :
  					operator === "*=" ? check && result.indexOf( check ) > -1 :
  					operator === "$=" ? check && result.slice( -check.length ) === check :
  					operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 :
  					operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
  					false;
  				/* eslint-enable max-len */
  
  			};
  		},
  
  		"CHILD": function( type, what, _argument, first, last ) {
  			var simple = type.slice( 0, 3 ) !== "nth",
  				forward = type.slice( -4 ) !== "last",
  				ofType = what === "of-type";
  
  			return first === 1 && last === 0 ?
  
  				// Shortcut for :nth-*(n)
  				function( elem ) {
  					return !!elem.parentNode;
  				} :
  
  				function( elem, _context, xml ) {
  					var cache, uniqueCache, outerCache, node, nodeIndex, start,
  						dir = simple !== forward ? "nextSibling" : "previousSibling",
  						parent = elem.parentNode,
  						name = ofType && elem.nodeName.toLowerCase(),
  						useCache = !xml && !ofType,
  						diff = false;
  
  					if ( parent ) {
  
  						// :(first|last|only)-(child|of-type)
  						if ( simple ) {
  							while ( dir ) {
  								node = elem;
  								while ( ( node = node[ dir ] ) ) {
  									if ( ofType ?
  										node.nodeName.toLowerCase() === name :
  										node.nodeType === 1 ) {
  
  										return false;
  									}
  								}
  
  								// Reverse direction for :only-* (if we haven't yet done so)
  								start = dir = type === "only" && !start && "nextSibling";
  							}
  							return true;
  						}
  
  						start = [ forward ? parent.firstChild : parent.lastChild ];
  
  						// non-xml :nth-child(...) stores cache data on `parent`
  						if ( forward && useCache ) {
  
  							// Seek `elem` from a previously-cached index
  
  							// ...in a gzip-friendly way
  							node = parent;
  							outerCache = node[ expando ] || ( node[ expando ] = {} );
  
  							// Support: IE <9 only
  							// Defend against cloned attroperties (jQuery gh-1709)
  							uniqueCache = outerCache[ node.uniqueID ] ||
  								( outerCache[ node.uniqueID ] = {} );
  
  							cache = uniqueCache[ type ] || [];
  							nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
  							diff = nodeIndex && cache[ 2 ];
  							node = nodeIndex && parent.childNodes[ nodeIndex ];
  
  							while ( ( node = ++nodeIndex && node && node[ dir ] ||
  
  								// Fallback to seeking `elem` from the start
  								( diff = nodeIndex = 0 ) || start.pop() ) ) {
  
  								// When found, cache indexes on `parent` and break
  								if ( node.nodeType === 1 && ++diff && node === elem ) {
  									uniqueCache[ type ] = [ dirruns, nodeIndex, diff ];
  									break;
  								}
  							}
  
  						} else {
  
  							// Use previously-cached element index if available
  							if ( useCache ) {
  
  								// ...in a gzip-friendly way
  								node = elem;
  								outerCache = node[ expando ] || ( node[ expando ] = {} );
  
  								// Support: IE <9 only
  								// Defend against cloned attroperties (jQuery gh-1709)
  								uniqueCache = outerCache[ node.uniqueID ] ||
  									( outerCache[ node.uniqueID ] = {} );
  
  								cache = uniqueCache[ type ] || [];
  								nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
  								diff = nodeIndex;
  							}
  
  							// xml :nth-child(...)
  							// or :nth-last-child(...) or :nth(-last)?-of-type(...)
  							if ( diff === false ) {
  
  								// Use the same loop as above to seek `elem` from the start
  								while ( ( node = ++nodeIndex && node && node[ dir ] ||
  									( diff = nodeIndex = 0 ) || start.pop() ) ) {
  
  									if ( ( ofType ?
  										node.nodeName.toLowerCase() === name :
  										node.nodeType === 1 ) &&
  										++diff ) {
  
  										// Cache the index of each encountered element
  										if ( useCache ) {
  											outerCache = node[ expando ] ||
  												( node[ expando ] = {} );
  
  											// Support: IE <9 only
  											// Defend against cloned attroperties (jQuery gh-1709)
  											uniqueCache = outerCache[ node.uniqueID ] ||
  												( outerCache[ node.uniqueID ] = {} );
  
  											uniqueCache[ type ] = [ dirruns, diff ];
  										}
  
  										if ( node === elem ) {
  											break;
  										}
  									}
  								}
  							}
  						}
  
  						// Incorporate the offset, then check against cycle size
  						diff -= last;
  						return diff === first || ( diff % first === 0 && diff / first >= 0 );
  					}
  				};
  		},
  
  		"PSEUDO": function( pseudo, argument ) {
  
  			// pseudo-class names are case-insensitive
  			// http://www.w3.org/TR/selectors/#pseudo-classes
  			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
  			// Remember that setFilters inherits from pseudos
  			var args,
  				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
  					Sizzle.error( "unsupported pseudo: " + pseudo );
  
  			// The user may use createPseudo to indicate that
  			// arguments are needed to create the filter function
  			// just as Sizzle does
  			if ( fn[ expando ] ) {
  				return fn( argument );
  			}
  
  			// But maintain support for old signatures
  			if ( fn.length > 1 ) {
  				args = [ pseudo, pseudo, "", argument ];
  				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
  					markFunction( function( seed, matches ) {
  						var idx,
  							matched = fn( seed, argument ),
  							i = matched.length;
  						while ( i-- ) {
  							idx = indexOf( seed, matched[ i ] );
  							seed[ idx ] = !( matches[ idx ] = matched[ i ] );
  						}
  					} ) :
  					function( elem ) {
  						return fn( elem, 0, args );
  					};
  			}
  
  			return fn;
  		}
  	},
  
  	pseudos: {
  
  		// Potentially complex pseudos
  		"not": markFunction( function( selector ) {
  
  			// Trim the selector passed to compile
  			// to avoid treating leading and trailing
  			// spaces as combinators
  			var input = [],
  				results = [],
  				matcher = compile( selector.replace( rtrim, "$1" ) );
  
  			return matcher[ expando ] ?
  				markFunction( function( seed, matches, _context, xml ) {
  					var elem,
  						unmatched = matcher( seed, null, xml, [] ),
  						i = seed.length;
  
  					// Match elements unmatched by `matcher`
  					while ( i-- ) {
  						if ( ( elem = unmatched[ i ] ) ) {
  							seed[ i ] = !( matches[ i ] = elem );
  						}
  					}
  				} ) :
  				function( elem, _context, xml ) {
  					input[ 0 ] = elem;
  					matcher( input, null, xml, results );
  
  					// Don't keep the element (issue #299)
  					input[ 0 ] = null;
  					return !results.pop();
  				};
  		} ),
  
  		"has": markFunction( function( selector ) {
  			return function( elem ) {
  				return Sizzle( selector, elem ).length > 0;
  			};
  		} ),
  
  		"contains": markFunction( function( text ) {
  			text = text.replace( runescape, funescape );
  			return function( elem ) {
  				return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1;
  			};
  		} ),
  
  		// "Whether an element is represented by a :lang() selector
  		// is based solely on the element's language value
  		// being equal to the identifier C,
  		// or beginning with the identifier C immediately followed by "-".
  		// The matching of C against the element's language value is performed case-insensitively.
  		// The identifier C does not have to be a valid language name."
  		// http://www.w3.org/TR/selectors/#lang-pseudo
  		"lang": markFunction( function( lang ) {
  
  			// lang value must be a valid identifier
  			if ( !ridentifier.test( lang || "" ) ) {
  				Sizzle.error( "unsupported lang: " + lang );
  			}
  			lang = lang.replace( runescape, funescape ).toLowerCase();
  			return function( elem ) {
  				var elemLang;
  				do {
  					if ( ( elemLang = documentIsHTML ?
  						elem.lang :
  						elem.getAttribute( "xml:lang" ) || elem.getAttribute( "lang" ) ) ) {
  
  						elemLang = elemLang.toLowerCase();
  						return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
  					}
  				} while ( ( elem = elem.parentNode ) && elem.nodeType === 1 );
  				return false;
  			};
  		} ),
  
  		// Miscellaneous
  		"target": function( elem ) {
  			var hash = window.location && window.location.hash;
  			return hash && hash.slice( 1 ) === elem.id;
  		},
  
  		"root": function( elem ) {
  			return elem === docElem;
  		},
  
  		"focus": function( elem ) {
  			return elem === document.activeElement &&
  				( !document.hasFocus || document.hasFocus() ) &&
  				!!( elem.type || elem.href || ~elem.tabIndex );
  		},
  
  		// Boolean properties
  		"enabled": createDisabledPseudo( false ),
  		"disabled": createDisabledPseudo( true ),
  
  		"checked": function( elem ) {
  
  			// In CSS3, :checked should return both checked and selected elements
  			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
  			var nodeName = elem.nodeName.toLowerCase();
  			return ( nodeName === "input" && !!elem.checked ) ||
  				( nodeName === "option" && !!elem.selected );
  		},
  
  		"selected": function( elem ) {
  
  			// Accessing this property makes selected-by-default
  			// options in Safari work properly
  			if ( elem.parentNode ) {
  				// eslint-disable-next-line no-unused-expressions
  				elem.parentNode.selectedIndex;
  			}
  
  			return elem.selected === true;
  		},
  
  		// Contents
  		"empty": function( elem ) {
  
  			// http://www.w3.org/TR/selectors/#empty-pseudo
  			// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
  			//   but not by others (comment: 8; processing instruction: 7; etc.)
  			// nodeType < 6 works because attributes (2) do not appear as children
  			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
  				if ( elem.nodeType < 6 ) {
  					return false;
  				}
  			}
  			return true;
  		},
  
  		"parent": function( elem ) {
  			return !Expr.pseudos[ "empty" ]( elem );
  		},
  
  		// Element/input types
  		"header": function( elem ) {
  			return rheader.test( elem.nodeName );
  		},
  
  		"input": function( elem ) {
  			return rinputs.test( elem.nodeName );
  		},
  
  		"button": function( elem ) {
  			var name = elem.nodeName.toLowerCase();
  			return name === "input" && elem.type === "button" || name === "button";
  		},
  
  		"text": function( elem ) {
  			var attr;
  			return elem.nodeName.toLowerCase() === "input" &&
  				elem.type === "text" &&
  
  				// Support: IE<8
  				// New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
  				( ( attr = elem.getAttribute( "type" ) ) == null ||
  					attr.toLowerCase() === "text" );
  		},
  
  		// Position-in-collection
  		"first": createPositionalPseudo( function() {
  			return [ 0 ];
  		} ),
  
  		"last": createPositionalPseudo( function( _matchIndexes, length ) {
  			return [ length - 1 ];
  		} ),
  
  		"eq": createPositionalPseudo( function( _matchIndexes, length, argument ) {
  			return [ argument < 0 ? argument + length : argument ];
  		} ),
  
  		"even": createPositionalPseudo( function( matchIndexes, length ) {
  			var i = 0;
  			for ( ; i < length; i += 2 ) {
  				matchIndexes.push( i );
  			}
  			return matchIndexes;
  		} ),
  
  		"odd": createPositionalPseudo( function( matchIndexes, length ) {
  			var i = 1;
  			for ( ; i < length; i += 2 ) {
  				matchIndexes.push( i );
  			}
  			return matchIndexes;
  		} ),
  
  		"lt": createPositionalPseudo( function( matchIndexes, length, argument ) {
  			var i = argument < 0 ?
  				argument + length :
  				argument > length ?
  					length :
  					argument;
  			for ( ; --i >= 0; ) {
  				matchIndexes.push( i );
  			}
  			return matchIndexes;
  		} ),
  
  		"gt": createPositionalPseudo( function( matchIndexes, length, argument ) {
  			var i = argument < 0 ? argument + length : argument;
  			for ( ; ++i < length; ) {
  				matchIndexes.push( i );
  			}
  			return matchIndexes;
  		} )
  	}
  };
  
  Expr.pseudos[ "nth" ] = Expr.pseudos[ "eq" ];
  
  // Add button/input type pseudos
  for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
  	Expr.pseudos[ i ] = createInputPseudo( i );
  }
  for ( i in { submit: true, reset: true } ) {
  	Expr.pseudos[ i ] = createButtonPseudo( i );
  }
  
  // Easy API for creating new setFilters
  function setFilters() {}
  setFilters.prototype = Expr.filters = Expr.pseudos;
  Expr.setFilters = new setFilters();
  
  tokenize = Sizzle.tokenize = function( selector, parseOnly ) {
  	var matched, match, tokens, type,
  		soFar, groups, preFilters,
  		cached = tokenCache[ selector + " " ];
  
  	if ( cached ) {
  		return parseOnly ? 0 : cached.slice( 0 );
  	}
  
  	soFar = selector;
  	groups = [];
  	preFilters = Expr.preFilter;
  
  	while ( soFar ) {
  
  		// Comma and first run
  		if ( !matched || ( match = rcomma.exec( soFar ) ) ) {
  			if ( match ) {
  
  				// Don't consume trailing commas as valid
  				soFar = soFar.slice( match[ 0 ].length ) || soFar;
  			}
  			groups.push( ( tokens = [] ) );
  		}
  
  		matched = false;
  
  		// Combinators
  		if ( ( match = rcombinators.exec( soFar ) ) ) {
  			matched = match.shift();
  			tokens.push( {
  				value: matched,
  
  				// Cast descendant combinators to space
  				type: match[ 0 ].replace( rtrim, " " )
  			} );
  			soFar = soFar.slice( matched.length );
  		}
  
  		// Filters
  		for ( type in Expr.filter ) {
  			if ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] ||
  				( match = preFilters[ type ]( match ) ) ) ) {
  				matched = match.shift();
  				tokens.push( {
  					value: matched,
  					type: type,
  					matches: match
  				} );
  				soFar = soFar.slice( matched.length );
  			}
  		}
  
  		if ( !matched ) {
  			break;
  		}
  	}
  
  	// Return the length of the invalid excess
  	// if we're just parsing
  	// Otherwise, throw an error or return tokens
  	return parseOnly ?
  		soFar.length :
  		soFar ?
  			Sizzle.error( selector ) :
  
  			// Cache the tokens
  			tokenCache( selector, groups ).slice( 0 );
  };
  
  function toSelector( tokens ) {
  	var i = 0,
  		len = tokens.length,
  		selector = "";
  	for ( ; i < len; i++ ) {
  		selector += tokens[ i ].value;
  	}
  	return selector;
  }
  
  function addCombinator( matcher, combinator, base ) {
  	var dir = combinator.dir,
  		skip = combinator.next,
  		key = skip || dir,
  		checkNonElements = base && key === "parentNode",
  		doneName = done++;
  
  	return combinator.first ?
  
  		// Check against closest ancestor/preceding element
  		function( elem, context, xml ) {
  			while ( ( elem = elem[ dir ] ) ) {
  				if ( elem.nodeType === 1 || checkNonElements ) {
  					return matcher( elem, context, xml );
  				}
  			}
  			return false;
  		} :
  
  		// Check against all ancestor/preceding elements
  		function( elem, context, xml ) {
  			var oldCache, uniqueCache, outerCache,
  				newCache = [ dirruns, doneName ];
  
  			// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
  			if ( xml ) {
  				while ( ( elem = elem[ dir ] ) ) {
  					if ( elem.nodeType === 1 || checkNonElements ) {
  						if ( matcher( elem, context, xml ) ) {
  							return true;
  						}
  					}
  				}
  			} else {
  				while ( ( elem = elem[ dir ] ) ) {
  					if ( elem.nodeType === 1 || checkNonElements ) {
  						outerCache = elem[ expando ] || ( elem[ expando ] = {} );
  
  						// Support: IE <9 only
  						// Defend against cloned attroperties (jQuery gh-1709)
  						uniqueCache = outerCache[ elem.uniqueID ] ||
  							( outerCache[ elem.uniqueID ] = {} );
  
  						if ( skip && skip === elem.nodeName.toLowerCase() ) {
  							elem = elem[ dir ] || elem;
  						} else if ( ( oldCache = uniqueCache[ key ] ) &&
  							oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {
  
  							// Assign to newCache so results back-propagate to previous elements
  							return ( newCache[ 2 ] = oldCache[ 2 ] );
  						} else {
  
  							// Reuse newcache so results back-propagate to previous elements
  							uniqueCache[ key ] = newCache;
  
  							// A match means we're done; a fail means we have to keep checking
  							if ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) {
  								return true;
  							}
  						}
  					}
  				}
  			}
  			return false;
  		};
  }
  
  function elementMatcher( matchers ) {
  	return matchers.length > 1 ?
  		function( elem, context, xml ) {
  			var i = matchers.length;
  			while ( i-- ) {
  				if ( !matchers[ i ]( elem, context, xml ) ) {
  					return false;
  				}
  			}
  			return true;
  		} :
  		matchers[ 0 ];
  }
  
  function multipleContexts( selector, contexts, results ) {
  	var i = 0,
  		len = contexts.length;
  	for ( ; i < len; i++ ) {
  		Sizzle( selector, contexts[ i ], results );
  	}
  	return results;
  }
  
  function condense( unmatched, map, filter, context, xml ) {
  	var elem,
  		newUnmatched = [],
  		i = 0,
  		len = unmatched.length,
  		mapped = map != null;
  
  	for ( ; i < len; i++ ) {
  		if ( ( elem = unmatched[ i ] ) ) {
  			if ( !filter || filter( elem, context, xml ) ) {
  				newUnmatched.push( elem );
  				if ( mapped ) {
  					map.push( i );
  				}
  			}
  		}
  	}
  
  	return newUnmatched;
  }
  
  function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
  	if ( postFilter && !postFilter[ expando ] ) {
  		postFilter = setMatcher( postFilter );
  	}
  	if ( postFinder && !postFinder[ expando ] ) {
  		postFinder = setMatcher( postFinder, postSelector );
  	}
  	return markFunction( function( seed, results, context, xml ) {
  		var temp, i, elem,
  			preMap = [],
  			postMap = [],
  			preexisting = results.length,
  
  			// Get initial elements from seed or context
  			elems = seed || multipleContexts(
  				selector || "*",
  				context.nodeType ? [ context ] : context,
  				[]
  			),
  
  			// Prefilter to get matcher input, preserving a map for seed-results synchronization
  			matcherIn = preFilter && ( seed || !selector ) ?
  				condense( elems, preMap, preFilter, context, xml ) :
  				elems,
  
  			matcherOut = matcher ?
  
  				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
  				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?
  
  					// ...intermediate processing is necessary
  					[] :
  
  					// ...otherwise use results directly
  					results :
  				matcherIn;
  
  		// Find primary matches
  		if ( matcher ) {
  			matcher( matcherIn, matcherOut, context, xml );
  		}
  
  		// Apply postFilter
  		if ( postFilter ) {
  			temp = condense( matcherOut, postMap );
  			postFilter( temp, [], context, xml );
  
  			// Un-match failing elements by moving them back to matcherIn
  			i = temp.length;
  			while ( i-- ) {
  				if ( ( elem = temp[ i ] ) ) {
  					matcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem );
  				}
  			}
  		}
  
  		if ( seed ) {
  			if ( postFinder || preFilter ) {
  				if ( postFinder ) {
  
  					// Get the final matcherOut by condensing this intermediate into postFinder contexts
  					temp = [];
  					i = matcherOut.length;
  					while ( i-- ) {
  						if ( ( elem = matcherOut[ i ] ) ) {
  
  							// Restore matcherIn since elem is not yet a final match
  							temp.push( ( matcherIn[ i ] = elem ) );
  						}
  					}
  					postFinder( null, ( matcherOut = [] ), temp, xml );
  				}
  
  				// Move matched elements from seed to results to keep them synchronized
  				i = matcherOut.length;
  				while ( i-- ) {
  					if ( ( elem = matcherOut[ i ] ) &&
  						( temp = postFinder ? indexOf( seed, elem ) : preMap[ i ] ) > -1 ) {
  
  						seed[ temp ] = !( results[ temp ] = elem );
  					}
  				}
  			}
  
  		// Add elements to results, through postFinder if defined
  		} else {
  			matcherOut = condense(
  				matcherOut === results ?
  					matcherOut.splice( preexisting, matcherOut.length ) :
  					matcherOut
  			);
  			if ( postFinder ) {
  				postFinder( null, results, matcherOut, xml );
  			} else {
  				push.apply( results, matcherOut );
  			}
  		}
  	} );
  }
  
  function matcherFromTokens( tokens ) {
  	var checkContext, matcher, j,
  		len = tokens.length,
  		leadingRelative = Expr.relative[ tokens[ 0 ].type ],
  		implicitRelative = leadingRelative || Expr.relative[ " " ],
  		i = leadingRelative ? 1 : 0,
  
  		// The foundational matcher ensures that elements are reachable from top-level context(s)
  		matchContext = addCombinator( function( elem ) {
  			return elem === checkContext;
  		}, implicitRelative, true ),
  		matchAnyContext = addCombinator( function( elem ) {
  			return indexOf( checkContext, elem ) > -1;
  		}, implicitRelative, true ),
  		matchers = [ function( elem, context, xml ) {
  			var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
  				( checkContext = context ).nodeType ?
  					matchContext( elem, context, xml ) :
  					matchAnyContext( elem, context, xml ) );
  
  			// Avoid hanging onto element (issue #299)
  			checkContext = null;
  			return ret;
  		} ];
  
  	for ( ; i < len; i++ ) {
  		if ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) {
  			matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ];
  		} else {
  			matcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches );
  
  			// Return special upon seeing a positional matcher
  			if ( matcher[ expando ] ) {
  
  				// Find the next relative operator (if any) for proper handling
  				j = ++i;
  				for ( ; j < len; j++ ) {
  					if ( Expr.relative[ tokens[ j ].type ] ) {
  						break;
  					}
  				}
  				return setMatcher(
  					i > 1 && elementMatcher( matchers ),
  					i > 1 && toSelector(
  
  					// If the preceding token was a descendant combinator, insert an implicit any-element `*`
  					tokens
  						.slice( 0, i - 1 )
  						.concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } )
  					).replace( rtrim, "$1" ),
  					matcher,
  					i < j && matcherFromTokens( tokens.slice( i, j ) ),
  					j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ),
  					j < len && toSelector( tokens )
  				);
  			}
  			matchers.push( matcher );
  		}
  	}
  
  	return elementMatcher( matchers );
  }
  
  function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
  	var bySet = setMatchers.length > 0,
  		byElement = elementMatchers.length > 0,
  		superMatcher = function( seed, context, xml, results, outermost ) {
  			var elem, j, matcher,
  				matchedCount = 0,
  				i = "0",
  				unmatched = seed && [],
  				setMatched = [],
  				contextBackup = outermostContext,
  
  				// We must always have either seed elements or outermost context
  				elems = seed || byElement && Expr.find[ "TAG" ]( "*", outermost ),
  
  				// Use integer dirruns iff this is the outermost matcher
  				dirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ),
  				len = elems.length;
  
  			if ( outermost ) {
  
  				// Support: IE 11+, Edge 17 - 18+
  				// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  				// two documents; shallow comparisons work.
  				// eslint-disable-next-line eqeqeq
  				outermostContext = context == document || context || outermost;
  			}
  
  			// Add elements passing elementMatchers directly to results
  			// Support: IE<9, Safari
  			// Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
  			for ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) {
  				if ( byElement && elem ) {
  					j = 0;
  
  					// Support: IE 11+, Edge 17 - 18+
  					// IE/Edge sometimes throw a "Permission denied" error when strict-comparing
  					// two documents; shallow comparisons work.
  					// eslint-disable-next-line eqeqeq
  					if ( !context && elem.ownerDocument != document ) {
  						setDocument( elem );
  						xml = !documentIsHTML;
  					}
  					while ( ( matcher = elementMatchers[ j++ ] ) ) {
  						if ( matcher( elem, context || document, xml ) ) {
  							results.push( elem );
  							break;
  						}
  					}
  					if ( outermost ) {
  						dirruns = dirrunsUnique;
  					}
  				}
  
  				// Track unmatched elements for set filters
  				if ( bySet ) {
  
  					// They will have gone through all possible matchers
  					if ( ( elem = !matcher && elem ) ) {
  						matchedCount--;
  					}
  
  					// Lengthen the array for every element, matched or not
  					if ( seed ) {
  						unmatched.push( elem );
  					}
  				}
  			}
  
  			// `i` is now the count of elements visited above, and adding it to `matchedCount`
  			// makes the latter nonnegative.
  			matchedCount += i;
  
  			// Apply set filters to unmatched elements
  			// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
  			// equals `i`), unless we didn't visit _any_ elements in the above loop because we have
  			// no element matchers and no seed.
  			// Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
  			// case, which will result in a "00" `matchedCount` that differs from `i` but is also
  			// numerically zero.
  			if ( bySet && i !== matchedCount ) {
  				j = 0;
  				while ( ( matcher = setMatchers[ j++ ] ) ) {
  					matcher( unmatched, setMatched, context, xml );
  				}
  
  				if ( seed ) {
  
  					// Reintegrate element matches to eliminate the need for sorting
  					if ( matchedCount > 0 ) {
  						while ( i-- ) {
  							if ( !( unmatched[ i ] || setMatched[ i ] ) ) {
  								setMatched[ i ] = pop.call( results );
  							}
  						}
  					}
  
  					// Discard index placeholder values to get only actual matches
  					setMatched = condense( setMatched );
  				}
  
  				// Add matches to results
  				push.apply( results, setMatched );
  
  				// Seedless set matches succeeding multiple successful matchers stipulate sorting
  				if ( outermost && !seed && setMatched.length > 0 &&
  					( matchedCount + setMatchers.length ) > 1 ) {
  
  					Sizzle.uniqueSort( results );
  				}
  			}
  
  			// Override manipulation of globals by nested matchers
  			if ( outermost ) {
  				dirruns = dirrunsUnique;
  				outermostContext = contextBackup;
  			}
  
  			return unmatched;
  		};
  
  	return bySet ?
  		markFunction( superMatcher ) :
  		superMatcher;
  }
  
  compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) {
  	var i,
  		setMatchers = [],
  		elementMatchers = [],
  		cached = compilerCache[ selector + " " ];
  
  	if ( !cached ) {
  
  		// Generate a function of recursive functions that can be used to check each element
  		if ( !match ) {
  			match = tokenize( selector );
  		}
  		i = match.length;
  		while ( i-- ) {
  			cached = matcherFromTokens( match[ i ] );
  			if ( cached[ expando ] ) {
  				setMatchers.push( cached );
  			} else {
  				elementMatchers.push( cached );
  			}
  		}
  
  		// Cache the compiled function
  		cached = compilerCache(
  			selector,
  			matcherFromGroupMatchers( elementMatchers, setMatchers )
  		);
  
  		// Save selector and tokenization
  		cached.selector = selector;
  	}
  	return cached;
  };
  
  /**
   * A low-level selection function that works with Sizzle's compiled
   *  selector functions
   * @param {String|Function} selector A selector or a pre-compiled
   *  selector function built with Sizzle.compile
   * @param {Element} context
   * @param {Array} [results]
   * @param {Array} [seed] A set of elements to match against
   */
  select = Sizzle.select = function( selector, context, results, seed ) {
  	var i, tokens, token, type, find,
  		compiled = typeof selector === "function" && selector,
  		match = !seed && tokenize( ( selector = compiled.selector || selector ) );
  
  	results = results || [];
  
  	// Try to minimize operations if there is only one selector in the list and no seed
  	// (the latter of which guarantees us context)
  	if ( match.length === 1 ) {
  
  		// Reduce context if the leading compound selector is an ID
  		tokens = match[ 0 ] = match[ 0 ].slice( 0 );
  		if ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === "ID" &&
  			context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) {
  
  			context = ( Expr.find[ "ID" ]( token.matches[ 0 ]
  				.replace( runescape, funescape ), context ) || [] )[ 0 ];
  			if ( !context ) {
  				return results;
  
  			// Precompiled matchers will still verify ancestry, so step up a level
  			} else if ( compiled ) {
  				context = context.parentNode;
  			}
  
  			selector = selector.slice( tokens.shift().value.length );
  		}
  
  		// Fetch a seed set for right-to-left matching
  		i = matchExpr[ "needsContext" ].test( selector ) ? 0 : tokens.length;
  		while ( i-- ) {
  			token = tokens[ i ];
  
  			// Abort if we hit a combinator
  			if ( Expr.relative[ ( type = token.type ) ] ) {
  				break;
  			}
  			if ( ( find = Expr.find[ type ] ) ) {
  
  				// Search, expanding context for leading sibling combinators
  				if ( ( seed = find(
  					token.matches[ 0 ].replace( runescape, funescape ),
  					rsibling.test( tokens[ 0 ].type ) && testContext( context.parentNode ) ||
  						context
  				) ) ) {
  
  					// If seed is empty or no tokens remain, we can return early
  					tokens.splice( i, 1 );
  					selector = seed.length && toSelector( tokens );
  					if ( !selector ) {
  						push.apply( results, seed );
  						return results;
  					}
  
  					break;
  				}
  			}
  		}
  	}
  
  	// Compile and execute a filtering function if one is not provided
  	// Provide `match` to avoid retokenization if we modified the selector above
  	( compiled || compile( selector, match ) )(
  		seed,
  		context,
  		!documentIsHTML,
  		results,
  		!context || rsibling.test( selector ) && testContext( context.parentNode ) || context
  	);
  	return results;
  };
  
  // One-time assignments
  
  // Sort stability
  support.sortStable = expando.split( "" ).sort( sortOrder ).join( "" ) === expando;
  
  // Support: Chrome 14-35+
  // Always assume duplicates if they aren't passed to the comparison function
  support.detectDuplicates = !!hasDuplicate;
  
  // Initialize against the default document
  setDocument();
  
  // Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
  // Detached nodes confoundingly follow *each other*
  support.sortDetached = assert( function( el ) {
  
  	// Should return 1, but returns 4 (following)
  	return el.compareDocumentPosition( document.createElement( "fieldset" ) ) & 1;
  } );
  
  // Support: IE<8
  // Prevent attribute/property "interpolation"
  // https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
  if ( !assert( function( el ) {
  	el.innerHTML = "<a href='#'></a>";
  	return el.firstChild.getAttribute( "href" ) === "#";
  } ) ) {
  	addHandle( "type|href|height|width", function( elem, name, isXML ) {
  		if ( !isXML ) {
  			return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
  		}
  	} );
  }
  
  // Support: IE<9
  // Use defaultValue in place of getAttribute("value")
  if ( !support.attributes || !assert( function( el ) {
  	el.innerHTML = "<input/>";
  	el.firstChild.setAttribute( "value", "" );
  	return el.firstChild.getAttribute( "value" ) === "";
  } ) ) {
  	addHandle( "value", function( elem, _name, isXML ) {
  		if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
  			return elem.defaultValue;
  		}
  	} );
  }
  
  // Support: IE<9
  // Use getAttributeNode to fetch booleans when getAttribute lies
  if ( !assert( function( el ) {
  	return el.getAttribute( "disabled" ) == null;
  } ) ) {
  	addHandle( booleans, function( elem, name, isXML ) {
  		var val;
  		if ( !isXML ) {
  			return elem[ name ] === true ? name.toLowerCase() :
  				( val = elem.getAttributeNode( name ) ) && val.specified ?
  					val.value :
  					null;
  		}
  	} );
  }
  
  return Sizzle;
  
  } )( window );
  
  
  
  jQuery.find = Sizzle;
  jQuery.expr = Sizzle.selectors;
  
  // Deprecated
  jQuery.expr[ ":" ] = jQuery.expr.pseudos;
  jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
  jQuery.text = Sizzle.getText;
  jQuery.isXMLDoc = Sizzle.isXML;
  jQuery.contains = Sizzle.contains;
  jQuery.escapeSelector = Sizzle.escape;
  
  
  
  
  var dir = function( elem, dir, until ) {
  	var matched = [],
  		truncate = until !== undefined;
  
  	while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {
  		if ( elem.nodeType === 1 ) {
  			if ( truncate && jQuery( elem ).is( until ) ) {
  				break;
  			}
  			matched.push( elem );
  		}
  	}
  	return matched;
  };
  
  
  var siblings = function( n, elem ) {
  	var matched = [];
  
  	for ( ; n; n = n.nextSibling ) {
  		if ( n.nodeType === 1 && n !== elem ) {
  			matched.push( n );
  		}
  	}
  
  	return matched;
  };
  
  
  var rneedsContext = jQuery.expr.match.needsContext;
  
  
  
  function nodeName( elem, name ) {
  
    return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
  
  };
  var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i );
  
  
  
  // Implement the identical functionality for filter and not
  function winnow( elements, qualifier, not ) {
  	if ( isFunction( qualifier ) ) {
  		return jQuery.grep( elements, function( elem, i ) {
  			return !!qualifier.call( elem, i, elem ) !== not;
  		} );
  	}
  
  	// Single element
  	if ( qualifier.nodeType ) {
  		return jQuery.grep( elements, function( elem ) {
  			return ( elem === qualifier ) !== not;
  		} );
  	}
  
  	// Arraylike of elements (jQuery, arguments, Array)
  	if ( typeof qualifier !== "string" ) {
  		return jQuery.grep( elements, function( elem ) {
  			return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
  		} );
  	}
  
  	// Filtered directly for both simple and complex selectors
  	return jQuery.filter( qualifier, elements, not );
  }
  
  jQuery.filter = function( expr, elems, not ) {
  	var elem = elems[ 0 ];
  
  	if ( not ) {
  		expr = ":not(" + expr + ")";
  	}
  
  	if ( elems.length === 1 && elem.nodeType === 1 ) {
  		return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];
  	}
  
  	return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
  		return elem.nodeType === 1;
  	} ) );
  };
  
  jQuery.fn.extend( {
  	find: function( selector ) {
  		var i, ret,
  			len = this.length,
  			self = this;
  
  		if ( typeof selector !== "string" ) {
  			return this.pushStack( jQuery( selector ).filter( function() {
  				for ( i = 0; i < len; i++ ) {
  					if ( jQuery.contains( self[ i ], this ) ) {
  						return true;
  					}
  				}
  			} ) );
  		}
  
  		ret = this.pushStack( [] );
  
  		for ( i = 0; i < len; i++ ) {
  			jQuery.find( selector, self[ i ], ret );
  		}
  
  		return len > 1 ? jQuery.uniqueSort( ret ) : ret;
  	},
  	filter: function( selector ) {
  		return this.pushStack( winnow( this, selector || [], false ) );
  	},
  	not: function( selector ) {
  		return this.pushStack( winnow( this, selector || [], true ) );
  	},
  	is: function( selector ) {
  		return !!winnow(
  			this,
  
  			// If this is a positional/relative selector, check membership in the returned set
  			// so $("p:first").is("p:last") won't return true for a doc with two "p".
  			typeof selector === "string" && rneedsContext.test( selector ) ?
  				jQuery( selector ) :
  				selector || [],
  			false
  		).length;
  	}
  } );
  
  
  // Initialize a jQuery object
  
  
  // A central reference to the root jQuery(document)
  var rootjQuery,
  
  	// A simple way to check for HTML strings
  	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
  	// Strict HTML recognition (#11290: must start with <)
  	// Shortcut simple #id case for speed
  	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
  
  	init = jQuery.fn.init = function( selector, context, root ) {
  		var match, elem;
  
  		// HANDLE: $(""), $(null), $(undefined), $(false)
  		if ( !selector ) {
  			return this;
  		}
  
  		// Method init() accepts an alternate rootjQuery
  		// so migrate can support jQuery.sub (gh-2101)
  		root = root || rootjQuery;
  
  		// Handle HTML strings
  		if ( typeof selector === "string" ) {
  			if ( selector[ 0 ] === "<" &&
  				selector[ selector.length - 1 ] === ">" &&
  				selector.length >= 3 ) {
  
  				// Assume that strings that start and end with <> are HTML and skip the regex check
  				match = [ null, selector, null ];
  
  			} else {
  				match = rquickExpr.exec( selector );
  			}
  
  			// Match html or make sure no context is specified for #id
  			if ( match && ( match[ 1 ] || !context ) ) {
  
  				// HANDLE: $(html) -> $(array)
  				if ( match[ 1 ] ) {
  					context = context instanceof jQuery ? context[ 0 ] : context;
  
  					// Option to run scripts is true for back-compat
  					// Intentionally let the error be thrown if parseHTML is not present
  					jQuery.merge( this, jQuery.parseHTML(
  						match[ 1 ],
  						context && context.nodeType ? context.ownerDocument || context : document,
  						true
  					) );
  
  					// HANDLE: $(html, props)
  					if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {
  						for ( match in context ) {
  
  							// Properties of context are called as methods if possible
  							if ( isFunction( this[ match ] ) ) {
  								this[ match ]( context[ match ] );
  
  							// ...and otherwise set as attributes
  							} else {
  								this.attr( match, context[ match ] );
  							}
  						}
  					}
  
  					return this;
  
  				// HANDLE: $(#id)
  				} else {
  					elem = document.getElementById( match[ 2 ] );
  
  					if ( elem ) {
  
  						// Inject the element directly into the jQuery object
  						this[ 0 ] = elem;
  						this.length = 1;
  					}
  					return this;
  				}
  
  			// HANDLE: $(expr, $(...))
  			} else if ( !context || context.jquery ) {
  				return ( context || root ).find( selector );
  
  			// HANDLE: $(expr, context)
  			// (which is just equivalent to: $(context).find(expr)
  			} else {
  				return this.constructor( context ).find( selector );
  			}
  
  		// HANDLE: $(DOMElement)
  		} else if ( selector.nodeType ) {
  			this[ 0 ] = selector;
  			this.length = 1;
  			return this;
  
  		// HANDLE: $(function)
  		// Shortcut for document ready
  		} else if ( isFunction( selector ) ) {
  			return root.ready !== undefined ?
  				root.ready( selector ) :
  
  				// Execute immediately if ready is not present
  				selector( jQuery );
  		}
  
  		return jQuery.makeArray( selector, this );
  	};
  
  // Give the init function the jQuery prototype for later instantiation
  init.prototype = jQuery.fn;
  
  // Initialize central reference
  rootjQuery = jQuery( document );
  
  
  var rparentsprev = /^(?:parents|prev(?:Until|All))/,
  
  	// Methods guaranteed to produce a unique set when starting from a unique set
  	guaranteedUnique = {
  		children: true,
  		contents: true,
  		next: true,
  		prev: true
  	};
  
  jQuery.fn.extend( {
  	has: function( target ) {
  		var targets = jQuery( target, this ),
  			l = targets.length;
  
  		return this.filter( function() {
  			var i = 0;
  			for ( ; i < l; i++ ) {
  				if ( jQuery.contains( this, targets[ i ] ) ) {
  					return true;
  				}
  			}
  		} );
  	},
  
  	closest: function( selectors, context ) {
  		var cur,
  			i = 0,
  			l = this.length,
  			matched = [],
  			targets = typeof selectors !== "string" && jQuery( selectors );
  
  		// Positional selectors never match, since there's no _selection_ context
  		if ( !rneedsContext.test( selectors ) ) {
  			for ( ; i < l; i++ ) {
  				for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {
  
  					// Always skip document fragments
  					if ( cur.nodeType < 11 && ( targets ?
  						targets.index( cur ) > -1 :
  
  						// Don't pass non-elements to Sizzle
  						cur.nodeType === 1 &&
  							jQuery.find.matchesSelector( cur, selectors ) ) ) {
  
  						matched.push( cur );
  						break;
  					}
  				}
  			}
  		}
  
  		return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
  	},
  
  	// Determine the position of an element within the set
  	index: function( elem ) {
  
  		// No argument, return index in parent
  		if ( !elem ) {
  			return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
  		}
  
  		// Index in selector
  		if ( typeof elem === "string" ) {
  			return indexOf.call( jQuery( elem ), this[ 0 ] );
  		}
  
  		// Locate the position of the desired element
  		return indexOf.call( this,
  
  			// If it receives a jQuery object, the first element is used
  			elem.jquery ? elem[ 0 ] : elem
  		);
  	},
  
  	add: function( selector, context ) {
  		return this.pushStack(
  			jQuery.uniqueSort(
  				jQuery.merge( this.get(), jQuery( selector, context ) )
  			)
  		);
  	},
  
  	addBack: function( selector ) {
  		return this.add( selector == null ?
  			this.prevObject : this.prevObject.filter( selector )
  		);
  	}
  } );
  
  function sibling( cur, dir ) {
  	while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}
  	return cur;
  }
  
  jQuery.each( {
  	parent: function( elem ) {
  		var parent = elem.parentNode;
  		return parent && parent.nodeType !== 11 ? parent : null;
  	},
  	parents: function( elem ) {
  		return dir( elem, "parentNode" );
  	},
  	parentsUntil: function( elem, _i, until ) {
  		return dir( elem, "parentNode", until );
  	},
  	next: function( elem ) {
  		return sibling( elem, "nextSibling" );
  	},
  	prev: function( elem ) {
  		return sibling( elem, "previousSibling" );
  	},
  	nextAll: function( elem ) {
  		return dir( elem, "nextSibling" );
  	},
  	prevAll: function( elem ) {
  		return dir( elem, "previousSibling" );
  	},
  	nextUntil: function( elem, _i, until ) {
  		return dir( elem, "nextSibling", until );
  	},
  	prevUntil: function( elem, _i, until ) {
  		return dir( elem, "previousSibling", until );
  	},
  	siblings: function( elem ) {
  		return siblings( ( elem.parentNode || {} ).firstChild, elem );
  	},
  	children: function( elem ) {
  		return siblings( elem.firstChild );
  	},
  	contents: function( elem ) {
  		if ( elem.contentDocument != null &&
  
  			// Support: IE 11+
  			// <object> elements with no `data` attribute has an object
  			// `contentDocument` with a `null` prototype.
  			getProto( elem.contentDocument ) ) {
  
  			return elem.contentDocument;
  		}
  
  		// Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
  		// Treat the template element as a regular one in browsers that
  		// don't support it.
  		if ( nodeName( elem, "template" ) ) {
  			elem = elem.content || elem;
  		}
  
  		return jQuery.merge( [], elem.childNodes );
  	}
  }, function( name, fn ) {
  	jQuery.fn[ name ] = function( until, selector ) {
  		var matched = jQuery.map( this, fn, until );
  
  		if ( name.slice( -5 ) !== "Until" ) {
  			selector = until;
  		}
  
  		if ( selector && typeof selector === "string" ) {
  			matched = jQuery.filter( selector, matched );
  		}
  
  		if ( this.length > 1 ) {
  
  			// Remove duplicates
  			if ( !guaranteedUnique[ name ] ) {
  				jQuery.uniqueSort( matched );
  			}
  
  			// Reverse order for parents* and prev-derivatives
  			if ( rparentsprev.test( name ) ) {
  				matched.reverse();
  			}
  		}
  
  		return this.pushStack( matched );
  	};
  } );
  var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g );
  
  
  
  // Convert String-formatted options into Object-formatted ones
  function createOptions( options ) {
  	var object = {};
  	jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {
  		object[ flag ] = true;
  	} );
  	return object;
  }
  
  /*
   * Create a callback list using the following parameters:
   *
   *	options: an optional list of space-separated options that will change how
   *			the callback list behaves or a more traditional option object
   *
   * By default a callback list will act like an event callback list and can be
   * "fired" multiple times.
   *
   * Possible options:
   *
   *	once:			will ensure the callback list can only be fired once (like a Deferred)
   *
   *	memory:			will keep track of previous values and will call any callback added
   *					after the list has been fired right away with the latest "memorized"
   *					values (like a Deferred)
   *
   *	unique:			will ensure a callback can only be added once (no duplicate in the list)
   *
   *	stopOnFalse:	interrupt callings when a callback returns false
   *
   */
  jQuery.Callbacks = function( options ) {
  
  	// Convert options from String-formatted to Object-formatted if needed
  	// (we check in cache first)
  	options = typeof options === "string" ?
  		createOptions( options ) :
  		jQuery.extend( {}, options );
  
  	var // Flag to know if list is currently firing
  		firing,
  
  		// Last fire value for non-forgettable lists
  		memory,
  
  		// Flag to know if list was already fired
  		fired,
  
  		// Flag to prevent firing
  		locked,
  
  		// Actual callback list
  		list = [],
  
  		// Queue of execution data for repeatable lists
  		queue = [],
  
  		// Index of currently firing callback (modified by add/remove as needed)
  		firingIndex = -1,
  
  		// Fire callbacks
  		fire = function() {
  
  			// Enforce single-firing
  			locked = locked || options.once;
  
  			// Execute callbacks for all pending executions,
  			// respecting firingIndex overrides and runtime changes
  			fired = firing = true;
  			for ( ; queue.length; firingIndex = -1 ) {
  				memory = queue.shift();
  				while ( ++firingIndex < list.length ) {
  
  					// Run callback and check for early termination
  					if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&
  						options.stopOnFalse ) {
  
  						// Jump to end and forget the data so .add doesn't re-fire
  						firingIndex = list.length;
  						memory = false;
  					}
  				}
  			}
  
  			// Forget the data if we're done with it
  			if ( !options.memory ) {
  				memory = false;
  			}
  
  			firing = false;
  
  			// Clean up if we're done firing for good
  			if ( locked ) {
  
  				// Keep an empty list if we have data for future add calls
  				if ( memory ) {
  					list = [];
  
  				// Otherwise, this object is spent
  				} else {
  					list = "";
  				}
  			}
  		},
  
  		// Actual Callbacks object
  		self = {
  
  			// Add a callback or a collection of callbacks to the list
  			add: function() {
  				if ( list ) {
  
  					// If we have memory from a past run, we should fire after adding
  					if ( memory && !firing ) {
  						firingIndex = list.length - 1;
  						queue.push( memory );
  					}
  
  					( function add( args ) {
  						jQuery.each( args, function( _, arg ) {
  							if ( isFunction( arg ) ) {
  								if ( !options.unique || !self.has( arg ) ) {
  									list.push( arg );
  								}
  							} else if ( arg && arg.length && toType( arg ) !== "string" ) {
  
  								// Inspect recursively
  								add( arg );
  							}
  						} );
  					} )( arguments );
  
  					if ( memory && !firing ) {
  						fire();
  					}
  				}
  				return this;
  			},
  
  			// Remove a callback from the list
  			remove: function() {
  				jQuery.each( arguments, function( _, arg ) {
  					var index;
  					while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
  						list.splice( index, 1 );
  
  						// Handle firing indexes
  						if ( index <= firingIndex ) {
  							firingIndex--;
  						}
  					}
  				} );
  				return this;
  			},
  
  			// Check if a given callback is in the list.
  			// If no argument is given, return whether or not list has callbacks attached.
  			has: function( fn ) {
  				return fn ?
  					jQuery.inArray( fn, list ) > -1 :
  					list.length > 0;
  			},
  
  			// Remove all callbacks from the list
  			empty: function() {
  				if ( list ) {
  					list = [];
  				}
  				return this;
  			},
  
  			// Disable .fire and .add
  			// Abort any current/pending executions
  			// Clear all callbacks and values
  			disable: function() {
  				locked = queue = [];
  				list = memory = "";
  				return this;
  			},
  			disabled: function() {
  				return !list;
  			},
  
  			// Disable .fire
  			// Also disable .add unless we have memory (since it would have no effect)
  			// Abort any pending executions
  			lock: function() {
  				locked = queue = [];
  				if ( !memory && !firing ) {
  					list = memory = "";
  				}
  				return this;
  			},
  			locked: function() {
  				return !!locked;
  			},
  
  			// Call all callbacks with the given context and arguments
  			fireWith: function( context, args ) {
  				if ( !locked ) {
  					args = args || [];
  					args = [ context, args.slice ? args.slice() : args ];
  					queue.push( args );
  					if ( !firing ) {
  						fire();
  					}
  				}
  				return this;
  			},
  
  			// Call all the callbacks with the given arguments
  			fire: function() {
  				self.fireWith( this, arguments );
  				return this;
  			},
  
  			// To know if the callbacks have already been called at least once
  			fired: function() {
  				return !!fired;
  			}
  		};
  
  	return self;
  };
  
  
  function Identity( v ) {
  	return v;
  }
  function Thrower( ex ) {
  	throw ex;
  }
  
  function adoptValue( value, resolve, reject, noValue ) {
  	var method;
  
  	try {
  
  		// Check for promise aspect first to privilege synchronous behavior
  		if ( value && isFunction( ( method = value.promise ) ) ) {
  			method.call( value ).done( resolve ).fail( reject );
  
  		// Other thenables
  		} else if ( value && isFunction( ( method = value.then ) ) ) {
  			method.call( value, resolve, reject );
  
  		// Other non-thenables
  		} else {
  
  			// Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:
  			// * false: [ value ].slice( 0 ) => resolve( value )
  			// * true: [ value ].slice( 1 ) => resolve()
  			resolve.apply( undefined, [ value ].slice( noValue ) );
  		}
  
  	// For Promises/A+, convert exceptions into rejections
  	// Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in
  	// Deferred#then to conditionally suppress rejection.
  	} catch ( value ) {
  
  		// Support: Android 4.0 only
  		// Strict mode functions invoked without .call/.apply get global-object context
  		reject.apply( undefined, [ value ] );
  	}
  }
  
  jQuery.extend( {
  
  	Deferred: function( func ) {
  		var tuples = [
  
  				// action, add listener, callbacks,
  				// ... .then handlers, argument index, [final state]
  				[ "notify", "progress", jQuery.Callbacks( "memory" ),
  					jQuery.Callbacks( "memory" ), 2 ],
  				[ "resolve", "done", jQuery.Callbacks( "once memory" ),
  					jQuery.Callbacks( "once memory" ), 0, "resolved" ],
  				[ "reject", "fail", jQuery.Callbacks( "once memory" ),
  					jQuery.Callbacks( "once memory" ), 1, "rejected" ]
  			],
  			state = "pending",
  			promise = {
  				state: function() {
  					return state;
  				},
  				always: function() {
  					deferred.done( arguments ).fail( arguments );
  					return this;
  				},
  				"catch": function( fn ) {
  					return promise.then( null, fn );
  				},
  
  				// Keep pipe for back-compat
  				pipe: function( /* fnDone, fnFail, fnProgress */ ) {
  					var fns = arguments;
  
  					return jQuery.Deferred( function( newDefer ) {
  						jQuery.each( tuples, function( _i, tuple ) {
  
  							// Map tuples (progress, done, fail) to arguments (done, fail, progress)
  							var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];
  
  							// deferred.progress(function() { bind to newDefer or newDefer.notify })
  							// deferred.done(function() { bind to newDefer or newDefer.resolve })
  							// deferred.fail(function() { bind to newDefer or newDefer.reject })
  							deferred[ tuple[ 1 ] ]( function() {
  								var returned = fn && fn.apply( this, arguments );
  								if ( returned && isFunction( returned.promise ) ) {
  									returned.promise()
  										.progress( newDefer.notify )
  										.done( newDefer.resolve )
  										.fail( newDefer.reject );
  								} else {
  									newDefer[ tuple[ 0 ] + "With" ](
  										this,
  										fn ? [ returned ] : arguments
  									);
  								}
  							} );
  						} );
  						fns = null;
  					} ).promise();
  				},
  				then: function( onFulfilled, onRejected, onProgress ) {
  					var maxDepth = 0;
  					function resolve( depth, deferred, handler, special ) {
  						return function() {
  							var that = this,
  								args = arguments,
  								mightThrow = function() {
  									var returned, then;
  
  									// Support: Promises/A+ section 2.3.3.3.3
  									// https://promisesaplus.com/#point-59
  									// Ignore double-resolution attempts
  									if ( depth < maxDepth ) {
  										return;
  									}
  
  									returned = handler.apply( that, args );
  
  									// Support: Promises/A+ section 2.3.1
  									// https://promisesaplus.com/#point-48
  									if ( returned === deferred.promise() ) {
  										throw new TypeError( "Thenable self-resolution" );
  									}
  
  									// Support: Promises/A+ sections 2.3.3.1, 3.5
  									// https://promisesaplus.com/#point-54
  									// https://promisesaplus.com/#point-75
  									// Retrieve `then` only once
  									then = returned &&
  
  										// Support: Promises/A+ section 2.3.4
  										// https://promisesaplus.com/#point-64
  										// Only check objects and functions for thenability
  										( typeof returned === "object" ||
  											typeof returned === "function" ) &&
  										returned.then;
  
  									// Handle a returned thenable
  									if ( isFunction( then ) ) {
  
  										// Special processors (notify) just wait for resolution
  										if ( special ) {
  											then.call(
  												returned,
  												resolve( maxDepth, deferred, Identity, special ),
  												resolve( maxDepth, deferred, Thrower, special )
  											);
  
  										// Normal processors (resolve) also hook into progress
  										} else {
  
  											// ...and disregard older resolution values
  											maxDepth++;
  
  											then.call(
  												returned,
  												resolve( maxDepth, deferred, Identity, special ),
  												resolve( maxDepth, deferred, Thrower, special ),
  												resolve( maxDepth, deferred, Identity,
  													deferred.notifyWith )
  											);
  										}
  
  									// Handle all other returned values
  									} else {
  
  										// Only substitute handlers pass on context
  										// and multiple values (non-spec behavior)
  										if ( handler !== Identity ) {
  											that = undefined;
  											args = [ returned ];
  										}
  
  										// Process the value(s)
  										// Default process is resolve
  										( special || deferred.resolveWith )( that, args );
  									}
  								},
  
  								// Only normal processors (resolve) catch and reject exceptions
  								process = special ?
  									mightThrow :
  									function() {
  										try {
  											mightThrow();
  										} catch ( e ) {
  
  											if ( jQuery.Deferred.exceptionHook ) {
  												jQuery.Deferred.exceptionHook( e,
  													process.stackTrace );
  											}
  
  											// Support: Promises/A+ section 2.3.3.3.4.1
  											// https://promisesaplus.com/#point-61
  											// Ignore post-resolution exceptions
  											if ( depth + 1 >= maxDepth ) {
  
  												// Only substitute handlers pass on context
  												// and multiple values (non-spec behavior)
  												if ( handler !== Thrower ) {
  													that = undefined;
  													args = [ e ];
  												}
  
  												deferred.rejectWith( that, args );
  											}
  										}
  									};
  
  							// Support: Promises/A+ section 2.3.3.3.1
  							// https://promisesaplus.com/#point-57
  							// Re-resolve promises immediately to dodge false rejection from
  							// subsequent errors
  							if ( depth ) {
  								process();
  							} else {
  
  								// Call an optional hook to record the stack, in case of exception
  								// since it's otherwise lost when execution goes async
  								if ( jQuery.Deferred.getStackHook ) {
  									process.stackTrace = jQuery.Deferred.getStackHook();
  								}
  								window.setTimeout( process );
  							}
  						};
  					}
  
  					return jQuery.Deferred( function( newDefer ) {
  
  						// progress_handlers.add( ... )
  						tuples[ 0 ][ 3 ].add(
  							resolve(
  								0,
  								newDefer,
  								isFunction( onProgress ) ?
  									onProgress :
  									Identity,
  								newDefer.notifyWith
  							)
  						);
  
  						// fulfilled_handlers.add( ... )
  						tuples[ 1 ][ 3 ].add(
  							resolve(
  								0,
  								newDefer,
  								isFunction( onFulfilled ) ?
  									onFulfilled :
  									Identity
  							)
  						);
  
  						// rejected_handlers.add( ... )
  						tuples[ 2 ][ 3 ].add(
  							resolve(
  								0,
  								newDefer,
  								isFunction( onRejected ) ?
  									onRejected :
  									Thrower
  							)
  						);
  					} ).promise();
  				},
  
  				// Get a promise for this deferred
  				// If obj is provided, the promise aspect is added to the object
  				promise: function( obj ) {
  					return obj != null ? jQuery.extend( obj, promise ) : promise;
  				}
  			},
  			deferred = {};
  
  		// Add list-specific methods
  		jQuery.each( tuples, function( i, tuple ) {
  			var list = tuple[ 2 ],
  				stateString = tuple[ 5 ];
  
  			// promise.progress = list.add
  			// promise.done = list.add
  			// promise.fail = list.add
  			promise[ tuple[ 1 ] ] = list.add;
  
  			// Handle state
  			if ( stateString ) {
  				list.add(
  					function() {
  
  						// state = "resolved" (i.e., fulfilled)
  						// state = "rejected"
  						state = stateString;
  					},
  
  					// rejected_callbacks.disable
  					// fulfilled_callbacks.disable
  					tuples[ 3 - i ][ 2 ].disable,
  
  					// rejected_handlers.disable
  					// fulfilled_handlers.disable
  					tuples[ 3 - i ][ 3 ].disable,
  
  					// progress_callbacks.lock
  					tuples[ 0 ][ 2 ].lock,
  
  					// progress_handlers.lock
  					tuples[ 0 ][ 3 ].lock
  				);
  			}
  
  			// progress_handlers.fire
  			// fulfilled_handlers.fire
  			// rejected_handlers.fire
  			list.add( tuple[ 3 ].fire );
  
  			// deferred.notify = function() { deferred.notifyWith(...) }
  			// deferred.resolve = function() { deferred.resolveWith(...) }
  			// deferred.reject = function() { deferred.rejectWith(...) }
  			deferred[ tuple[ 0 ] ] = function() {
  				deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments );
  				return this;
  			};
  
  			// deferred.notifyWith = list.fireWith
  			// deferred.resolveWith = list.fireWith
  			// deferred.rejectWith = list.fireWith
  			deferred[ tuple[ 0 ] + "With" ] = list.fireWith;
  		} );
  
  		// Make the deferred a promise
  		promise.promise( deferred );
  
  		// Call given func if any
  		if ( func ) {
  			func.call( deferred, deferred );
  		}
  
  		// All done!
  		return deferred;
  	},
  
  	// Deferred helper
  	when: function( singleValue ) {
  		var
  
  			// count of uncompleted subordinates
  			remaining = arguments.length,
  
  			// count of unprocessed arguments
  			i = remaining,
  
  			// subordinate fulfillment data
  			resolveContexts = Array( i ),
  			resolveValues = slice.call( arguments ),
  
  			// the master Deferred
  			master = jQuery.Deferred(),
  
  			// subordinate callback factory
  			updateFunc = function( i ) {
  				return function( value ) {
  					resolveContexts[ i ] = this;
  					resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
  					if ( !( --remaining ) ) {
  						master.resolveWith( resolveContexts, resolveValues );
  					}
  				};
  			};
  
  		// Single- and empty arguments are adopted like Promise.resolve
  		if ( remaining <= 1 ) {
  			adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject,
  				!remaining );
  
  			// Use .then() to unwrap secondary thenables (cf. gh-3000)
  			if ( master.state() === "pending" ||
  				isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {
  
  				return master.then();
  			}
  		}
  
  		// Multiple arguments are aggregated like Promise.all array elements
  		while ( i-- ) {
  			adoptValue( resolveValues[ i ], updateFunc( i ), master.reject );
  		}
  
  		return master.promise();
  	}
  } );
  
  
  // These usually indicate a programmer mistake during development,
  // warn about them ASAP rather than swallowing them by default.
  var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;
  
  jQuery.Deferred.exceptionHook = function( error, stack ) {
  
  	// Support: IE 8 - 9 only
  	// Console exists when dev tools are open, which can happen at any time
  	if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {
  		window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack );
  	}
  };
  
  
  
  
  jQuery.readyException = function( error ) {
  	window.setTimeout( function() {
  		throw error;
  	} );
  };
  
  
  
  
  // The deferred used on DOM ready
  var readyList = jQuery.Deferred();
  
  jQuery.fn.ready = function( fn ) {
  
  	readyList
  		.then( fn )
  
  		// Wrap jQuery.readyException in a function so that the lookup
  		// happens at the time of error handling instead of callback
  		// registration.
  		.catch( function( error ) {
  			jQuery.readyException( error );
  		} );
  
  	return this;
  };
  
  jQuery.extend( {
  
  	// Is the DOM ready to be used? Set to true once it occurs.
  	isReady: false,
  
  	// A counter to track how many items to wait for before
  	// the ready event fires. See #6781
  	readyWait: 1,
  
  	// Handle when the DOM is ready
  	ready: function( wait ) {
  
  		// Abort if there are pending holds or we're already ready
  		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
  			return;
  		}
  
  		// Remember that the DOM is ready
  		jQuery.isReady = true;
  
  		// If a normal DOM Ready event fired, decrement, and wait if need be
  		if ( wait !== true && --jQuery.readyWait > 0 ) {
  			return;
  		}
  
  		// If there are functions bound, to execute
  		readyList.resolveWith( document, [ jQuery ] );
  	}
  } );
  
  jQuery.ready.then = readyList.then;
  
  // The ready event handler and self cleanup method
  function completed() {
  	document.removeEventListener( "DOMContentLoaded", completed );
  	window.removeEventListener( "load", completed );
  	jQuery.ready();
  }
  
  // Catch cases where $(document).ready() is called
  // after the browser event has already occurred.
  // Support: IE <=9 - 10 only
  // Older IE sometimes signals "interactive" too soon
  if ( document.readyState === "complete" ||
  	( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {
  
  	// Handle it asynchronously to allow scripts the opportunity to delay ready
  	window.setTimeout( jQuery.ready );
  
  } else {
  
  	// Use the handy event callback
  	document.addEventListener( "DOMContentLoaded", completed );
  
  	// A fallback to window.onload, that will always work
  	window.addEventListener( "load", completed );
  }
  
  
  
  
  // Multifunctional method to get and set values of a collection
  // The value/s can optionally be executed if it's a function
  var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
  	var i = 0,
  		len = elems.length,
  		bulk = key == null;
  
  	// Sets many values
  	if ( toType( key ) === "object" ) {
  		chainable = true;
  		for ( i in key ) {
  			access( elems, fn, i, key[ i ], true, emptyGet, raw );
  		}
  
  	// Sets one value
  	} else if ( value !== undefined ) {
  		chainable = true;
  
  		if ( !isFunction( value ) ) {
  			raw = true;
  		}
  
  		if ( bulk ) {
  
  			// Bulk operations run against the entire set
  			if ( raw ) {
  				fn.call( elems, value );
  				fn = null;
  
  			// ...except when executing function values
  			} else {
  				bulk = fn;
  				fn = function( elem, _key, value ) {
  					return bulk.call( jQuery( elem ), value );
  				};
  			}
  		}
  
  		if ( fn ) {
  			for ( ; i < len; i++ ) {
  				fn(
  					elems[ i ], key, raw ?
  					value :
  					value.call( elems[ i ], i, fn( elems[ i ], key ) )
  				);
  			}
  		}
  	}
  
  	if ( chainable ) {
  		return elems;
  	}
  
  	// Gets
  	if ( bulk ) {
  		return fn.call( elems );
  	}
  
  	return len ? fn( elems[ 0 ], key ) : emptyGet;
  };
  
  
  // Matches dashed string for camelizing
  var rmsPrefix = /^-ms-/,
  	rdashAlpha = /-([a-z])/g;
  
  // Used by camelCase as callback to replace()
  function fcamelCase( _all, letter ) {
  	return letter.toUpperCase();
  }
  
  // Convert dashed to camelCase; used by the css and data modules
  // Support: IE <=9 - 11, Edge 12 - 15
  // Microsoft forgot to hump their vendor prefix (#9572)
  function camelCase( string ) {
  	return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
  }
  var acceptData = function( owner ) {
  
  	// Accepts only:
  	//  - Node
  	//    - Node.ELEMENT_NODE
  	//    - Node.DOCUMENT_NODE
  	//  - Object
  	//    - Any
  	return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );
  };
  
  
  
  
  function Data() {
  	this.expando = jQuery.expando + Data.uid++;
  }
  
  Data.uid = 1;
  
  Data.prototype = {
  
  	cache: function( owner ) {
  
  		// Check if the owner object already has a cache
  		var value = owner[ this.expando ];
  
  		// If not, create one
  		if ( !value ) {
  			value = {};
  
  			// We can accept data for non-element nodes in modern browsers,
  			// but we should not, see #8335.
  			// Always return an empty object.
  			if ( acceptData( owner ) ) {
  
  				// If it is a node unlikely to be stringify-ed or looped over
  				// use plain assignment
  				if ( owner.nodeType ) {
  					owner[ this.expando ] = value;
  
  				// Otherwise secure it in a non-enumerable property
  				// configurable must be true to allow the property to be
  				// deleted when data is removed
  				} else {
  					Object.defineProperty( owner, this.expando, {
  						value: value,
  						configurable: true
  					} );
  				}
  			}
  		}
  
  		return value;
  	},
  	set: function( owner, data, value ) {
  		var prop,
  			cache = this.cache( owner );
  
  		// Handle: [ owner, key, value ] args
  		// Always use camelCase key (gh-2257)
  		if ( typeof data === "string" ) {
  			cache[ camelCase( data ) ] = value;
  
  		// Handle: [ owner, { properties } ] args
  		} else {
  
  			// Copy the properties one-by-one to the cache object
  			for ( prop in data ) {
  				cache[ camelCase( prop ) ] = data[ prop ];
  			}
  		}
  		return cache;
  	},
  	get: function( owner, key ) {
  		return key === undefined ?
  			this.cache( owner ) :
  
  			// Always use camelCase key (gh-2257)
  			owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ];
  	},
  	access: function( owner, key, value ) {
  
  		// In cases where either:
  		//
  		//   1. No key was specified
  		//   2. A string key was specified, but no value provided
  		//
  		// Take the "read" path and allow the get method to determine
  		// which value to return, respectively either:
  		//
  		//   1. The entire cache object
  		//   2. The data stored at the key
  		//
  		if ( key === undefined ||
  				( ( key && typeof key === "string" ) && value === undefined ) ) {
  
  			return this.get( owner, key );
  		}
  
  		// When the key is not a string, or both a key and value
  		// are specified, set or extend (existing objects) with either:
  		//
  		//   1. An object of properties
  		//   2. A key and value
  		//
  		this.set( owner, key, value );
  
  		// Since the "set" path can have two possible entry points
  		// return the expected data based on which path was taken[*]
  		return value !== undefined ? value : key;
  	},
  	remove: function( owner, key ) {
  		var i,
  			cache = owner[ this.expando ];
  
  		if ( cache === undefined ) {
  			return;
  		}
  
  		if ( key !== undefined ) {
  
  			// Support array or space separated string of keys
  			if ( Array.isArray( key ) ) {
  
  				// If key is an array of keys...
  				// We always set camelCase keys, so remove that.
  				key = key.map( camelCase );
  			} else {
  				key = camelCase( key );
  
  				// If a key with the spaces exists, use it.
  				// Otherwise, create an array by matching non-whitespace
  				key = key in cache ?
  					[ key ] :
  					( key.match( rnothtmlwhite ) || [] );
  			}
  
  			i = key.length;
  
  			while ( i-- ) {
  				delete cache[ key[ i ] ];
  			}
  		}
  
  		// Remove the expando if there's no more data
  		if ( key === undefined || jQuery.isEmptyObject( cache ) ) {
  
  			// Support: Chrome <=35 - 45
  			// Webkit & Blink performance suffers when deleting properties
  			// from DOM nodes, so set to undefined instead
  			// https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)
  			if ( owner.nodeType ) {
  				owner[ this.expando ] = undefined;
  			} else {
  				delete owner[ this.expando ];
  			}
  		}
  	},
  	hasData: function( owner ) {
  		var cache = owner[ this.expando ];
  		return cache !== undefined && !jQuery.isEmptyObject( cache );
  	}
  };
  var dataPriv = new Data();
  
  var dataUser = new Data();
  
  
  
  //	Implementation Summary
  //
  //	1. Enforce API surface and semantic compatibility with 1.9.x branch
  //	2. Improve the module's maintainability by reducing the storage
  //		paths to a single mechanism.
  //	3. Use the same single mechanism to support "private" and "user" data.
  //	4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
  //	5. Avoid exposing implementation details on user objects (eg. expando properties)
  //	6. Provide a clear path for implementation upgrade to WeakMap in 2014
  
  var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
  	rmultiDash = /[A-Z]/g;
  
  function getData( data ) {
  	if ( data === "true" ) {
  		return true;
  	}
  
  	if ( data === "false" ) {
  		return false;
  	}
  
  	if ( data === "null" ) {
  		return null;
  	}
  
  	// Only convert to a number if it doesn't change the string
  	if ( data === +data + "" ) {
  		return +data;
  	}
  
  	if ( rbrace.test( data ) ) {
  		return JSON.parse( data );
  	}
  
  	return data;
  }
  
  function dataAttr( elem, key, data ) {
  	var name;
  
  	// If nothing was found internally, try to fetch any
  	// data from the HTML5 data-* attribute
  	if ( data === undefined && elem.nodeType === 1 ) {
  		name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase();
  		data = elem.getAttribute( name );
  
  		if ( typeof data === "string" ) {
  			try {
  				data = getData( data );
  			} catch ( e ) {}
  
  			// Make sure we set the data so it isn't changed later
  			dataUser.set( elem, key, data );
  		} else {
  			data = undefined;
  		}
  	}
  	return data;
  }
  
  jQuery.extend( {
  	hasData: function( elem ) {
  		return dataUser.hasData( elem ) || dataPriv.hasData( elem );
  	},
  
  	data: function( elem, name, data ) {
  		return dataUser.access( elem, name, data );
  	},
  
  	removeData: function( elem, name ) {
  		dataUser.remove( elem, name );
  	},
  
  	// TODO: Now that all calls to _data and _removeData have been replaced
  	// with direct calls to dataPriv methods, these can be deprecated.
  	_data: function( elem, name, data ) {
  		return dataPriv.access( elem, name, data );
  	},
  
  	_removeData: function( elem, name ) {
  		dataPriv.remove( elem, name );
  	}
  } );
  
  jQuery.fn.extend( {
  	data: function( key, value ) {
  		var i, name, data,
  			elem = this[ 0 ],
  			attrs = elem && elem.attributes;
  
  		// Gets all values
  		if ( key === undefined ) {
  			if ( this.length ) {
  				data = dataUser.get( elem );
  
  				if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) {
  					i = attrs.length;
  					while ( i-- ) {
  
  						// Support: IE 11 only
  						// The attrs elements can be null (#14894)
  						if ( attrs[ i ] ) {
  							name = attrs[ i ].name;
  							if ( name.indexOf( "data-" ) === 0 ) {
  								name = camelCase( name.slice( 5 ) );
  								dataAttr( elem, name, data[ name ] );
  							}
  						}
  					}
  					dataPriv.set( elem, "hasDataAttrs", true );
  				}
  			}
  
  			return data;
  		}
  
  		// Sets multiple values
  		if ( typeof key === "object" ) {
  			return this.each( function() {
  				dataUser.set( this, key );
  			} );
  		}
  
  		return access( this, function( value ) {
  			var data;
  
  			// The calling jQuery object (element matches) is not empty
  			// (and therefore has an element appears at this[ 0 ]) and the
  			// `value` parameter was not undefined. An empty jQuery object
  			// will result in `undefined` for elem = this[ 0 ] which will
  			// throw an exception if an attempt to read a data cache is made.
  			if ( elem && value === undefined ) {
  
  				// Attempt to get data from the cache
  				// The key will always be camelCased in Data
  				data = dataUser.get( elem, key );
  				if ( data !== undefined ) {
  					return data;
  				}
  
  				// Attempt to "discover" the data in
  				// HTML5 custom data-* attrs
  				data = dataAttr( elem, key );
  				if ( data !== undefined ) {
  					return data;
  				}
  
  				// We tried really hard, but the data doesn't exist.
  				return;
  			}
  
  			// Set the data...
  			this.each( function() {
  
  				// We always store the camelCased key
  				dataUser.set( this, key, value );
  			} );
  		}, null, value, arguments.length > 1, null, true );
  	},
  
  	removeData: function( key ) {
  		return this.each( function() {
  			dataUser.remove( this, key );
  		} );
  	}
  } );
  
  
  jQuery.extend( {
  	queue: function( elem, type, data ) {
  		var queue;
  
  		if ( elem ) {
  			type = ( type || "fx" ) + "queue";
  			queue = dataPriv.get( elem, type );
  
  			// Speed up dequeue by getting out quickly if this is just a lookup
  			if ( data ) {
  				if ( !queue || Array.isArray( data ) ) {
  					queue = dataPriv.access( elem, type, jQuery.makeArray( data ) );
  				} else {
  					queue.push( data );
  				}
  			}
  			return queue || [];
  		}
  	},
  
  	dequeue: function( elem, type ) {
  		type = type || "fx";
  
  		var queue = jQuery.queue( elem, type ),
  			startLength = queue.length,
  			fn = queue.shift(),
  			hooks = jQuery._queueHooks( elem, type ),
  			next = function() {
  				jQuery.dequeue( elem, type );
  			};
  
  		// If the fx queue is dequeued, always remove the progress sentinel
  		if ( fn === "inprogress" ) {
  			fn = queue.shift();
  			startLength--;
  		}
  
  		if ( fn ) {
  
  			// Add a progress sentinel to prevent the fx queue from being
  			// automatically dequeued
  			if ( type === "fx" ) {
  				queue.unshift( "inprogress" );
  			}
  
  			// Clear up the last queue stop function
  			delete hooks.stop;
  			fn.call( elem, next, hooks );
  		}
  
  		if ( !startLength && hooks ) {
  			hooks.empty.fire();
  		}
  	},
  
  	// Not public - generate a queueHooks object, or return the current one
  	_queueHooks: function( elem, type ) {
  		var key = type + "queueHooks";
  		return dataPriv.get( elem, key ) || dataPriv.access( elem, key, {
  			empty: jQuery.Callbacks( "once memory" ).add( function() {
  				dataPriv.remove( elem, [ type + "queue", key ] );
  			} )
  		} );
  	}
  } );
  
  jQuery.fn.extend( {
  	queue: function( type, data ) {
  		var setter = 2;
  
  		if ( typeof type !== "string" ) {
  			data = type;
  			type = "fx";
  			setter--;
  		}
  
  		if ( arguments.length < setter ) {
  			return jQuery.queue( this[ 0 ], type );
  		}
  
  		return data === undefined ?
  			this :
  			this.each( function() {
  				var queue = jQuery.queue( this, type, data );
  
  				// Ensure a hooks for this queue
  				jQuery._queueHooks( this, type );
  
  				if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
  					jQuery.dequeue( this, type );
  				}
  			} );
  	},
  	dequeue: function( type ) {
  		return this.each( function() {
  			jQuery.dequeue( this, type );
  		} );
  	},
  	clearQueue: function( type ) {
  		return this.queue( type || "fx", [] );
  	},
  
  	// Get a promise resolved when queues of a certain type
  	// are emptied (fx is the type by default)
  	promise: function( type, obj ) {
  		var tmp,
  			count = 1,
  			defer = jQuery.Deferred(),
  			elements = this,
  			i = this.length,
  			resolve = function() {
  				if ( !( --count ) ) {
  					defer.resolveWith( elements, [ elements ] );
  				}
  			};
  
  		if ( typeof type !== "string" ) {
  			obj = type;
  			type = undefined;
  		}
  		type = type || "fx";
  
  		while ( i-- ) {
  			tmp = dataPriv.get( elements[ i ], type + "queueHooks" );
  			if ( tmp && tmp.empty ) {
  				count++;
  				tmp.empty.add( resolve );
  			}
  		}
  		resolve();
  		return defer.promise( obj );
  	}
  } );
  var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;
  
  var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );
  
  
  var cssExpand = [ "Top", "Right", "Bottom", "Left" ];
  
  var documentElement = document.documentElement;
  
  
  
  	var isAttached = function( elem ) {
  			return jQuery.contains( elem.ownerDocument, elem );
  		},
  		composed = { composed: true };
  
  	// Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only
  	// Check attachment across shadow DOM boundaries when possible (gh-3504)
  	// Support: iOS 10.0-10.2 only
  	// Early iOS 10 versions support `attachShadow` but not `getRootNode`,
  	// leading to errors. We need to check for `getRootNode`.
  	if ( documentElement.getRootNode ) {
  		isAttached = function( elem ) {
  			return jQuery.contains( elem.ownerDocument, elem ) ||
  				elem.getRootNode( composed ) === elem.ownerDocument;
  		};
  	}
  var isHiddenWithinTree = function( elem, el ) {
  
  		// isHiddenWithinTree might be called from jQuery#filter function;
  		// in that case, element will be second argument
  		elem = el || elem;
  
  		// Inline style trumps all
  		return elem.style.display === "none" ||
  			elem.style.display === "" &&
  
  			// Otherwise, check computed style
  			// Support: Firefox <=43 - 45
  			// Disconnected elements can have computed display: none, so first confirm that elem is
  			// in the document.
  			isAttached( elem ) &&
  
  			jQuery.css( elem, "display" ) === "none";
  	};
  
  
  
  function adjustCSS( elem, prop, valueParts, tween ) {
  	var adjusted, scale,
  		maxIterations = 20,
  		currentValue = tween ?
  			function() {
  				return tween.cur();
  			} :
  			function() {
  				return jQuery.css( elem, prop, "" );
  			},
  		initial = currentValue(),
  		unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),
  
  		// Starting value computation is required for potential unit mismatches
  		initialInUnit = elem.nodeType &&
  			( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
  			rcssNum.exec( jQuery.css( elem, prop ) );
  
  	if ( initialInUnit && initialInUnit[ 3 ] !== unit ) {
  
  		// Support: Firefox <=54
  		// Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)
  		initial = initial / 2;
  
  		// Trust units reported by jQuery.css
  		unit = unit || initialInUnit[ 3 ];
  
  		// Iteratively approximate from a nonzero starting point
  		initialInUnit = +initial || 1;
  
  		while ( maxIterations-- ) {
  
  			// Evaluate and update our best guess (doubling guesses that zero out).
  			// Finish if the scale equals or crosses 1 (making the old*new product non-positive).
  			jQuery.style( elem, prop, initialInUnit + unit );
  			if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) {
  				maxIterations = 0;
  			}
  			initialInUnit = initialInUnit / scale;
  
  		}
  
  		initialInUnit = initialInUnit * 2;
  		jQuery.style( elem, prop, initialInUnit + unit );
  
  		// Make sure we update the tween properties later on
  		valueParts = valueParts || [];
  	}
  
  	if ( valueParts ) {
  		initialInUnit = +initialInUnit || +initial || 0;
  
  		// Apply relative offset (+=/-=) if specified
  		adjusted = valueParts[ 1 ] ?
  			initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :
  			+valueParts[ 2 ];
  		if ( tween ) {
  			tween.unit = unit;
  			tween.start = initialInUnit;
  			tween.end = adjusted;
  		}
  	}
  	return adjusted;
  }
  
  
  var defaultDisplayMap = {};
  
  function getDefaultDisplay( elem ) {
  	var temp,
  		doc = elem.ownerDocument,
  		nodeName = elem.nodeName,
  		display = defaultDisplayMap[ nodeName ];
  
  	if ( display ) {
  		return display;
  	}
  
  	temp = doc.body.appendChild( doc.createElement( nodeName ) );
  	display = jQuery.css( temp, "display" );
  
  	temp.parentNode.removeChild( temp );
  
  	if ( display === "none" ) {
  		display = "block";
  	}
  	defaultDisplayMap[ nodeName ] = display;
  
  	return display;
  }
  
  function showHide( elements, show ) {
  	var display, elem,
  		values = [],
  		index = 0,
  		length = elements.length;
  
  	// Determine new display value for elements that need to change
  	for ( ; index < length; index++ ) {
  		elem = elements[ index ];
  		if ( !elem.style ) {
  			continue;
  		}
  
  		display = elem.style.display;
  		if ( show ) {
  
  			// Since we force visibility upon cascade-hidden elements, an immediate (and slow)
  			// check is required in this first loop unless we have a nonempty display value (either
  			// inline or about-to-be-restored)
  			if ( display === "none" ) {
  				values[ index ] = dataPriv.get( elem, "display" ) || null;
  				if ( !values[ index ] ) {
  					elem.style.display = "";
  				}
  			}
  			if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
  				values[ index ] = getDefaultDisplay( elem );
  			}
  		} else {
  			if ( display !== "none" ) {
  				values[ index ] = "none";
  
  				// Remember what we're overwriting
  				dataPriv.set( elem, "display", display );
  			}
  		}
  	}
  
  	// Set the display of the elements in a second loop to avoid constant reflow
  	for ( index = 0; index < length; index++ ) {
  		if ( values[ index ] != null ) {
  			elements[ index ].style.display = values[ index ];
  		}
  	}
  
  	return elements;
  }
  
  jQuery.fn.extend( {
  	show: function() {
  		return showHide( this, true );
  	},
  	hide: function() {
  		return showHide( this );
  	},
  	toggle: function( state ) {
  		if ( typeof state === "boolean" ) {
  			return state ? this.show() : this.hide();
  		}
  
  		return this.each( function() {
  			if ( isHiddenWithinTree( this ) ) {
  				jQuery( this ).show();
  			} else {
  				jQuery( this ).hide();
  			}
  		} );
  	}
  } );
  var rcheckableType = ( /^(?:checkbox|radio)$/i );
  
  var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i );
  
  var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i );
  
  
  
  ( function() {
  	var fragment = document.createDocumentFragment(),
  		div = fragment.appendChild( document.createElement( "div" ) ),
  		input = document.createElement( "input" );
  
  	// Support: Android 4.0 - 4.3 only
  	// Check state lost if the name is set (#11217)
  	// Support: Windows Web Apps (WWA)
  	// `name` and `type` must use .setAttribute for WWA (#14901)
  	input.setAttribute( "type", "radio" );
  	input.setAttribute( "checked", "checked" );
  	input.setAttribute( "name", "t" );
  
  	div.appendChild( input );
  
  	// Support: Android <=4.1 only
  	// Older WebKit doesn't clone checked state correctly in fragments
  	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;
  
  	// Support: IE <=11 only
  	// Make sure textarea (and checkbox) defaultValue is properly cloned
  	div.innerHTML = "<textarea>x</textarea>";
  	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
  
  	// Support: IE <=9 only
  	// IE <=9 replaces <option> tags with their contents when inserted outside of
  	// the select element.
  	div.innerHTML = "<option></option>";
  	support.option = !!div.lastChild;
  } )();
  
  
  // We have to close these tags to support XHTML (#13200)
  var wrapMap = {
  
  	// XHTML parsers do not magically insert elements in the
  	// same way that tag soup parsers do. So we cannot shorten
  	// this by omitting <tbody> or other required elements.
  	thead: [ 1, "<table>", "</table>" ],
  	col: [ 2, "<table><colgroup>", "</colgroup></table>" ],
  	tr: [ 2, "<table><tbody>", "</tbody></table>" ],
  	td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
  
  	_default: [ 0, "", "" ]
  };
  
  wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
  wrapMap.th = wrapMap.td;
  
  // Support: IE <=9 only
  if ( !support.option ) {
  	wrapMap.optgroup = wrapMap.option = [ 1, "<select multiple='multiple'>", "</select>" ];
  }
  
  
  function getAll( context, tag ) {
  
  	// Support: IE <=9 - 11 only
  	// Use typeof to avoid zero-argument method invocation on host objects (#15151)
  	var ret;
  
  	if ( typeof context.getElementsByTagName !== "undefined" ) {
  		ret = context.getElementsByTagName( tag || "*" );
  
  	} else if ( typeof context.querySelectorAll !== "undefined" ) {
  		ret = context.querySelectorAll( tag || "*" );
  
  	} else {
  		ret = [];
  	}
  
  	if ( tag === undefined || tag && nodeName( context, tag ) ) {
  		return jQuery.merge( [ context ], ret );
  	}
  
  	return ret;
  }
  
  
  // Mark scripts as having already been evaluated
  function setGlobalEval( elems, refElements ) {
  	var i = 0,
  		l = elems.length;
  
  	for ( ; i < l; i++ ) {
  		dataPriv.set(
  			elems[ i ],
  			"globalEval",
  			!refElements || dataPriv.get( refElements[ i ], "globalEval" )
  		);
  	}
  }
  
  
  var rhtml = /<|&#?\w+;/;
  
  function buildFragment( elems, context, scripts, selection, ignored ) {
  	var elem, tmp, tag, wrap, attached, j,
  		fragment = context.createDocumentFragment(),
  		nodes = [],
  		i = 0,
  		l = elems.length;
  
  	for ( ; i < l; i++ ) {
  		elem = elems[ i ];
  
  		if ( elem || elem === 0 ) {
  
  			// Add nodes directly
  			if ( toType( elem ) === "object" ) {
  
  				// Support: Android <=4.0 only, PhantomJS 1 only
  				// push.apply(_, arraylike) throws on ancient WebKit
  				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );
  
  			// Convert non-html into a text node
  			} else if ( !rhtml.test( elem ) ) {
  				nodes.push( context.createTextNode( elem ) );
  
  			// Convert html into DOM nodes
  			} else {
  				tmp = tmp || fragment.appendChild( context.createElement( "div" ) );
  
  				// Deserialize a standard representation
  				tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
  				wrap = wrapMap[ tag ] || wrapMap._default;
  				tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];
  
  				// Descend through wrappers to the right content
  				j = wrap[ 0 ];
  				while ( j-- ) {
  					tmp = tmp.lastChild;
  				}
  
  				// Support: Android <=4.0 only, PhantomJS 1 only
  				// push.apply(_, arraylike) throws on ancient WebKit
  				jQuery.merge( nodes, tmp.childNodes );
  
  				// Remember the top-level container
  				tmp = fragment.firstChild;
  
  				// Ensure the created nodes are orphaned (#12392)
  				tmp.textContent = "";
  			}
  		}
  	}
  
  	// Remove wrapper from fragment
  	fragment.textContent = "";
  
  	i = 0;
  	while ( ( elem = nodes[ i++ ] ) ) {
  
  		// Skip elements already in the context collection (trac-4087)
  		if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
  			if ( ignored ) {
  				ignored.push( elem );
  			}
  			continue;
  		}
  
  		attached = isAttached( elem );
  
  		// Append to fragment
  		tmp = getAll( fragment.appendChild( elem ), "script" );
  
  		// Preserve script evaluation history
  		if ( attached ) {
  			setGlobalEval( tmp );
  		}
  
  		// Capture executables
  		if ( scripts ) {
  			j = 0;
  			while ( ( elem = tmp[ j++ ] ) ) {
  				if ( rscriptType.test( elem.type || "" ) ) {
  					scripts.push( elem );
  				}
  			}
  		}
  	}
  
  	return fragment;
  }
  
  
  var
  	rkeyEvent = /^key/,
  	rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
  	rtypenamespace = /^([^.]*)(?:\.(.+)|)/;
  
  function returnTrue() {
  	return true;
  }
  
  function returnFalse() {
  	return false;
  }
  
  // Support: IE <=9 - 11+
  // focus() and blur() are asynchronous, except when they are no-op.
  // So expect focus to be synchronous when the element is already active,
  // and blur to be synchronous when the element is not already active.
  // (focus and blur are always synchronous in other supported browsers,
  // this just defines when we can count on it).
  function expectSync( elem, type ) {
  	return ( elem === safeActiveElement() ) === ( type === "focus" );
  }
  
  // Support: IE <=9 only
  // Accessing document.activeElement can throw unexpectedly
  // https://bugs.jquery.com/ticket/13393
  function safeActiveElement() {
  	try {
  		return document.activeElement;
  	} catch ( err ) { }
  }
  
  function on( elem, types, selector, data, fn, one ) {
  	var origFn, type;
  
  	// Types can be a map of types/handlers
  	if ( typeof types === "object" ) {
  
  		// ( types-Object, selector, data )
  		if ( typeof selector !== "string" ) {
  
  			// ( types-Object, data )
  			data = data || selector;
  			selector = undefined;
  		}
  		for ( type in types ) {
  			on( elem, type, selector, data, types[ type ], one );
  		}
  		return elem;
  	}
  
  	if ( data == null && fn == null ) {
  
  		// ( types, fn )
  		fn = selector;
  		data = selector = undefined;
  	} else if ( fn == null ) {
  		if ( typeof selector === "string" ) {
  
  			// ( types, selector, fn )
  			fn = data;
  			data = undefined;
  		} else {
  
  			// ( types, data, fn )
  			fn = data;
  			data = selector;
  			selector = undefined;
  		}
  	}
  	if ( fn === false ) {
  		fn = returnFalse;
  	} else if ( !fn ) {
  		return elem;
  	}
  
  	if ( one === 1 ) {
  		origFn = fn;
  		fn = function( event ) {
  
  			// Can use an empty set, since event contains the info
  			jQuery().off( event );
  			return origFn.apply( this, arguments );
  		};
  
  		// Use same guid so caller can remove using origFn
  		fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
  	}
  	return elem.each( function() {
  		jQuery.event.add( this, types, fn, data, selector );
  	} );
  }
  
  /*
   * Helper functions for managing events -- not part of the public interface.
   * Props to Dean Edwards' addEvent library for many of the ideas.
   */
  jQuery.event = {
  
  	global: {},
  
  	add: function( elem, types, handler, data, selector ) {
  
  		var handleObjIn, eventHandle, tmp,
  			events, t, handleObj,
  			special, handlers, type, namespaces, origType,
  			elemData = dataPriv.get( elem );
  
  		// Only attach events to objects that accept data
  		if ( !acceptData( elem ) ) {
  			return;
  		}
  
  		// Caller can pass in an object of custom data in lieu of the handler
  		if ( handler.handler ) {
  			handleObjIn = handler;
  			handler = handleObjIn.handler;
  			selector = handleObjIn.selector;
  		}
  
  		// Ensure that invalid selectors throw exceptions at attach time
  		// Evaluate against documentElement in case elem is a non-element node (e.g., document)
  		if ( selector ) {
  			jQuery.find.matchesSelector( documentElement, selector );
  		}
  
  		// Make sure that the handler has a unique ID, used to find/remove it later
  		if ( !handler.guid ) {
  			handler.guid = jQuery.guid++;
  		}
  
  		// Init the element's event structure and main handler, if this is the first
  		if ( !( events = elemData.events ) ) {
  			events = elemData.events = Object.create( null );
  		}
  		if ( !( eventHandle = elemData.handle ) ) {
  			eventHandle = elemData.handle = function( e ) {
  
  				// Discard the second event of a jQuery.event.trigger() and
  				// when an event is called after a page has unloaded
  				return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
  					jQuery.event.dispatch.apply( elem, arguments ) : undefined;
  			};
  		}
  
  		// Handle multiple events separated by a space
  		types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
  		t = types.length;
  		while ( t-- ) {
  			tmp = rtypenamespace.exec( types[ t ] ) || [];
  			type = origType = tmp[ 1 ];
  			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();
  
  			// There *must* be a type, no attaching namespace-only handlers
  			if ( !type ) {
  				continue;
  			}
  
  			// If event changes its type, use the special event handlers for the changed type
  			special = jQuery.event.special[ type ] || {};
  
  			// If selector defined, determine special event api type, otherwise given type
  			type = ( selector ? special.delegateType : special.bindType ) || type;
  
  			// Update special based on newly reset type
  			special = jQuery.event.special[ type ] || {};
  
  			// handleObj is passed to all event handlers
  			handleObj = jQuery.extend( {
  				type: type,
  				origType: origType,
  				data: data,
  				handler: handler,
  				guid: handler.guid,
  				selector: selector,
  				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
  				namespace: namespaces.join( "." )
  			}, handleObjIn );
  
  			// Init the event handler queue if we're the first
  			if ( !( handlers = events[ type ] ) ) {
  				handlers = events[ type ] = [];
  				handlers.delegateCount = 0;
  
  				// Only use addEventListener if the special events handler returns false
  				if ( !special.setup ||
  					special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
  
  					if ( elem.addEventListener ) {
  						elem.addEventListener( type, eventHandle );
  					}
  				}
  			}
  
  			if ( special.add ) {
  				special.add.call( elem, handleObj );
  
  				if ( !handleObj.handler.guid ) {
  					handleObj.handler.guid = handler.guid;
  				}
  			}
  
  			// Add to the element's handler list, delegates in front
  			if ( selector ) {
  				handlers.splice( handlers.delegateCount++, 0, handleObj );
  			} else {
  				handlers.push( handleObj );
  			}
  
  			// Keep track of which events have ever been used, for event optimization
  			jQuery.event.global[ type ] = true;
  		}
  
  	},
  
  	// Detach an event or set of events from an element
  	remove: function( elem, types, handler, selector, mappedTypes ) {
  
  		var j, origCount, tmp,
  			events, t, handleObj,
  			special, handlers, type, namespaces, origType,
  			elemData = dataPriv.hasData( elem ) && dataPriv.get( elem );
  
  		if ( !elemData || !( events = elemData.events ) ) {
  			return;
  		}
  
  		// Once for each type.namespace in types; type may be omitted
  		types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
  		t = types.length;
  		while ( t-- ) {
  			tmp = rtypenamespace.exec( types[ t ] ) || [];
  			type = origType = tmp[ 1 ];
  			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();
  
  			// Unbind all events (on this namespace, if provided) for the element
  			if ( !type ) {
  				for ( type in events ) {
  					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
  				}
  				continue;
  			}
  
  			special = jQuery.event.special[ type ] || {};
  			type = ( selector ? special.delegateType : special.bindType ) || type;
  			handlers = events[ type ] || [];
  			tmp = tmp[ 2 ] &&
  				new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" );
  
  			// Remove matching events
  			origCount = j = handlers.length;
  			while ( j-- ) {
  				handleObj = handlers[ j ];
  
  				if ( ( mappedTypes || origType === handleObj.origType ) &&
  					( !handler || handler.guid === handleObj.guid ) &&
  					( !tmp || tmp.test( handleObj.namespace ) ) &&
  					( !selector || selector === handleObj.selector ||
  						selector === "**" && handleObj.selector ) ) {
  					handlers.splice( j, 1 );
  
  					if ( handleObj.selector ) {
  						handlers.delegateCount--;
  					}
  					if ( special.remove ) {
  						special.remove.call( elem, handleObj );
  					}
  				}
  			}
  
  			// Remove generic event handler if we removed something and no more handlers exist
  			// (avoids potential for endless recursion during removal of special event handlers)
  			if ( origCount && !handlers.length ) {
  				if ( !special.teardown ||
  					special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
  
  					jQuery.removeEvent( elem, type, elemData.handle );
  				}
  
  				delete events[ type ];
  			}
  		}
  
  		// Remove data and the expando if it's no longer used
  		if ( jQuery.isEmptyObject( events ) ) {
  			dataPriv.remove( elem, "handle events" );
  		}
  	},
  
  	dispatch: function( nativeEvent ) {
  
  		var i, j, ret, matched, handleObj, handlerQueue,
  			args = new Array( arguments.length ),
  
  			// Make a writable jQuery.Event from the native event object
  			event = jQuery.event.fix( nativeEvent ),
  
  			handlers = (
  					dataPriv.get( this, "events" ) || Object.create( null )
  				)[ event.type ] || [],
  			special = jQuery.event.special[ event.type ] || {};
  
  		// Use the fix-ed jQuery.Event rather than the (read-only) native event
  		args[ 0 ] = event;
  
  		for ( i = 1; i < arguments.length; i++ ) {
  			args[ i ] = arguments[ i ];
  		}
  
  		event.delegateTarget = this;
  
  		// Call the preDispatch hook for the mapped type, and let it bail if desired
  		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
  			return;
  		}
  
  		// Determine handlers
  		handlerQueue = jQuery.event.handlers.call( this, event, handlers );
  
  		// Run delegates first; they may want to stop propagation beneath us
  		i = 0;
  		while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {
  			event.currentTarget = matched.elem;
  
  			j = 0;
  			while ( ( handleObj = matched.handlers[ j++ ] ) &&
  				!event.isImmediatePropagationStopped() ) {
  
  				// If the event is namespaced, then each handler is only invoked if it is
  				// specially universal or its namespaces are a superset of the event's.
  				if ( !event.rnamespace || handleObj.namespace === false ||
  					event.rnamespace.test( handleObj.namespace ) ) {
  
  					event.handleObj = handleObj;
  					event.data = handleObj.data;
  
  					ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||
  						handleObj.handler ).apply( matched.elem, args );
  
  					if ( ret !== undefined ) {
  						if ( ( event.result = ret ) === false ) {
  							event.preventDefault();
  							event.stopPropagation();
  						}
  					}
  				}
  			}
  		}
  
  		// Call the postDispatch hook for the mapped type
  		if ( special.postDispatch ) {
  			special.postDispatch.call( this, event );
  		}
  
  		return event.result;
  	},
  
  	handlers: function( event, handlers ) {
  		var i, handleObj, sel, matchedHandlers, matchedSelectors,
  			handlerQueue = [],
  			delegateCount = handlers.delegateCount,
  			cur = event.target;
  
  		// Find delegate handlers
  		if ( delegateCount &&
  
  			// Support: IE <=9
  			// Black-hole SVG <use> instance trees (trac-13180)
  			cur.nodeType &&
  
  			// Support: Firefox <=42
  			// Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)
  			// https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click
  			// Support: IE 11 only
  			// ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343)
  			!( event.type === "click" && event.button >= 1 ) ) {
  
  			for ( ; cur !== this; cur = cur.parentNode || this ) {
  
  				// Don't check non-elements (#13208)
  				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
  				if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) {
  					matchedHandlers = [];
  					matchedSelectors = {};
  					for ( i = 0; i < delegateCount; i++ ) {
  						handleObj = handlers[ i ];
  
  						// Don't conflict with Object.prototype properties (#13203)
  						sel = handleObj.selector + " ";
  
  						if ( matchedSelectors[ sel ] === undefined ) {
  							matchedSelectors[ sel ] = handleObj.needsContext ?
  								jQuery( sel, this ).index( cur ) > -1 :
  								jQuery.find( sel, this, null, [ cur ] ).length;
  						}
  						if ( matchedSelectors[ sel ] ) {
  							matchedHandlers.push( handleObj );
  						}
  					}
  					if ( matchedHandlers.length ) {
  						handlerQueue.push( { elem: cur, handlers: matchedHandlers } );
  					}
  				}
  			}
  		}
  
  		// Add the remaining (directly-bound) handlers
  		cur = this;
  		if ( delegateCount < handlers.length ) {
  			handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );
  		}
  
  		return handlerQueue;
  	},
  
  	addProp: function( name, hook ) {
  		Object.defineProperty( jQuery.Event.prototype, name, {
  			enumerable: true,
  			configurable: true,
  
  			get: isFunction( hook ) ?
  				function() {
  					if ( this.originalEvent ) {
  							return hook( this.originalEvent );
  					}
  				} :
  				function() {
  					if ( this.originalEvent ) {
  							return this.originalEvent[ name ];
  					}
  				},
  
  			set: function( value ) {
  				Object.defineProperty( this, name, {
  					enumerable: true,
  					configurable: true,
  					writable: true,
  					value: value
  				} );
  			}
  		} );
  	},
  
  	fix: function( originalEvent ) {
  		return originalEvent[ jQuery.expando ] ?
  			originalEvent :
  			new jQuery.Event( originalEvent );
  	},
  
  	special: {
  		load: {
  
  			// Prevent triggered image.load events from bubbling to window.load
  			noBubble: true
  		},
  		click: {
  
  			// Utilize native event to ensure correct state for checkable inputs
  			setup: function( data ) {
  
  				// For mutual compressibility with _default, replace `this` access with a local var.
  				// `|| data` is dead code meant only to preserve the variable through minification.
  				var el = this || data;
  
  				// Claim the first handler
  				if ( rcheckableType.test( el.type ) &&
  					el.click && nodeName( el, "input" ) ) {
  
  					// dataPriv.set( el, "click", ... )
  					leverageNative( el, "click", returnTrue );
  				}
  
  				// Return false to allow normal processing in the caller
  				return false;
  			},
  			trigger: function( data ) {
  
  				// For mutual compressibility with _default, replace `this` access with a local var.
  				// `|| data` is dead code meant only to preserve the variable through minification.
  				var el = this || data;
  
  				// Force setup before triggering a click
  				if ( rcheckableType.test( el.type ) &&
  					el.click && nodeName( el, "input" ) ) {
  
  					leverageNative( el, "click" );
  				}
  
  				// Return non-false to allow normal event-path propagation
  				return true;
  			},
  
  			// For cross-browser consistency, suppress native .click() on links
  			// Also prevent it if we're currently inside a leveraged native-event stack
  			_default: function( event ) {
  				var target = event.target;
  				return rcheckableType.test( target.type ) &&
  					target.click && nodeName( target, "input" ) &&
  					dataPriv.get( target, "click" ) ||
  					nodeName( target, "a" );
  			}
  		},
  
  		beforeunload: {
  			postDispatch: function( event ) {
  
  				// Support: Firefox 20+
  				// Firefox doesn't alert if the returnValue field is not set.
  				if ( event.result !== undefined && event.originalEvent ) {
  					event.originalEvent.returnValue = event.result;
  				}
  			}
  		}
  	}
  };
  
  // Ensure the presence of an event listener that handles manually-triggered
  // synthetic events by interrupting progress until reinvoked in response to
  // *native* events that it fires directly, ensuring that state changes have
  // already occurred before other listeners are invoked.
  function leverageNative( el, type, expectSync ) {
  
  	// Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add
  	if ( !expectSync ) {
  		if ( dataPriv.get( el, type ) === undefined ) {
  			jQuery.event.add( el, type, returnTrue );
  		}
  		return;
  	}
  
  	// Register the controller as a special universal handler for all event namespaces
  	dataPriv.set( el, type, false );
  	jQuery.event.add( el, type, {
  		namespace: false,
  		handler: function( event ) {
  			var notAsync, result,
  				saved = dataPriv.get( this, type );
  
  			if ( ( event.isTrigger & 1 ) && this[ type ] ) {
  
  				// Interrupt processing of the outer synthetic .trigger()ed event
  				// Saved data should be false in such cases, but might be a leftover capture object
  				// from an async native handler (gh-4350)
  				if ( !saved.length ) {
  
  					// Store arguments for use when handling the inner native event
  					// There will always be at least one argument (an event object), so this array
  					// will not be confused with a leftover capture object.
  					saved = slice.call( arguments );
  					dataPriv.set( this, type, saved );
  
  					// Trigger the native event and capture its result
  					// Support: IE <=9 - 11+
  					// focus() and blur() are asynchronous
  					notAsync = expectSync( this, type );
  					this[ type ]();
  					result = dataPriv.get( this, type );
  					if ( saved !== result || notAsync ) {
  						dataPriv.set( this, type, false );
  					} else {
  						result = {};
  					}
  					if ( saved !== result ) {
  
  						// Cancel the outer synthetic event
  						event.stopImmediatePropagation();
  						event.preventDefault();
  						return result.value;
  					}
  
  				// If this is an inner synthetic event for an event with a bubbling surrogate
  				// (focus or blur), assume that the surrogate already propagated from triggering the
  				// native event and prevent that from happening again here.
  				// This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the
  				// bubbling surrogate propagates *after* the non-bubbling base), but that seems
  				// less bad than duplication.
  				} else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) {
  					event.stopPropagation();
  				}
  
  			// If this is a native event triggered above, everything is now in order
  			// Fire an inner synthetic event with the original arguments
  			} else if ( saved.length ) {
  
  				// ...and capture the result
  				dataPriv.set( this, type, {
  					value: jQuery.event.trigger(
  
  						// Support: IE <=9 - 11+
  						// Extend with the prototype to reset the above stopImmediatePropagation()
  						jQuery.extend( saved[ 0 ], jQuery.Event.prototype ),
  						saved.slice( 1 ),
  						this
  					)
  				} );
  
  				// Abort handling of the native event
  				event.stopImmediatePropagation();
  			}
  		}
  	} );
  }
  
  jQuery.removeEvent = function( elem, type, handle ) {
  
  	// This "if" is needed for plain objects
  	if ( elem.removeEventListener ) {
  		elem.removeEventListener( type, handle );
  	}
  };
  
  jQuery.Event = function( src, props ) {
  
  	// Allow instantiation without the 'new' keyword
  	if ( !( this instanceof jQuery.Event ) ) {
  		return new jQuery.Event( src, props );
  	}
  
  	// Event object
  	if ( src && src.type ) {
  		this.originalEvent = src;
  		this.type = src.type;
  
  		// Events bubbling up the document may have been marked as prevented
  		// by a handler lower down the tree; reflect the correct value.
  		this.isDefaultPrevented = src.defaultPrevented ||
  				src.defaultPrevented === undefined &&
  
  				// Support: Android <=2.3 only
  				src.returnValue === false ?
  			returnTrue :
  			returnFalse;
  
  		// Create target properties
  		// Support: Safari <=6 - 7 only
  		// Target should not be a text node (#504, #13143)
  		this.target = ( src.target && src.target.nodeType === 3 ) ?
  			src.target.parentNode :
  			src.target;
  
  		this.currentTarget = src.currentTarget;
  		this.relatedTarget = src.relatedTarget;
  
  	// Event type
  	} else {
  		this.type = src;
  	}
  
  	// Put explicitly provided properties onto the event object
  	if ( props ) {
  		jQuery.extend( this, props );
  	}
  
  	// Create a timestamp if incoming event doesn't have one
  	this.timeStamp = src && src.timeStamp || Date.now();
  
  	// Mark it as fixed
  	this[ jQuery.expando ] = true;
  };
  
  // jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
  // https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
  jQuery.Event.prototype = {
  	constructor: jQuery.Event,
  	isDefaultPrevented: returnFalse,
  	isPropagationStopped: returnFalse,
  	isImmediatePropagationStopped: returnFalse,
  	isSimulated: false,
  
  	preventDefault: function() {
  		var e = this.originalEvent;
  
  		this.isDefaultPrevented = returnTrue;
  
  		if ( e && !this.isSimulated ) {
  			e.preventDefault();
  		}
  	},
  	stopPropagation: function() {
  		var e = this.originalEvent;
  
  		this.isPropagationStopped = returnTrue;
  
  		if ( e && !this.isSimulated ) {
  			e.stopPropagation();
  		}
  	},
  	stopImmediatePropagation: function() {
  		var e = this.originalEvent;
  
  		this.isImmediatePropagationStopped = returnTrue;
  
  		if ( e && !this.isSimulated ) {
  			e.stopImmediatePropagation();
  		}
  
  		this.stopPropagation();
  	}
  };
  
  // Includes all common event props including KeyEvent and MouseEvent specific props
  jQuery.each( {
  	altKey: true,
  	bubbles: true,
  	cancelable: true,
  	changedTouches: true,
  	ctrlKey: true,
  	detail: true,
  	eventPhase: true,
  	metaKey: true,
  	pageX: true,
  	pageY: true,
  	shiftKey: true,
  	view: true,
  	"char": true,
  	code: true,
  	charCode: true,
  	key: true,
  	keyCode: true,
  	button: true,
  	buttons: true,
  	clientX: true,
  	clientY: true,
  	offsetX: true,
  	offsetY: true,
  	pointerId: true,
  	pointerType: true,
  	screenX: true,
  	screenY: true,
  	targetTouches: true,
  	toElement: true,
  	touches: true,
  
  	which: function( event ) {
  		var button = event.button;
  
  		// Add which for key events
  		if ( event.which == null && rkeyEvent.test( event.type ) ) {
  			return event.charCode != null ? event.charCode : event.keyCode;
  		}
  
  		// Add which for click: 1 === left; 2 === middle; 3 === right
  		if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) {
  			if ( button & 1 ) {
  				return 1;
  			}
  
  			if ( button & 2 ) {
  				return 3;
  			}
  
  			if ( button & 4 ) {
  				return 2;
  			}
  
  			return 0;
  		}
  
  		return event.which;
  	}
  }, jQuery.event.addProp );
  
  jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) {
  	jQuery.event.special[ type ] = {
  
  		// Utilize native event if possible so blur/focus sequence is correct
  		setup: function() {
  
  			// Claim the first handler
  			// dataPriv.set( this, "focus", ... )
  			// dataPriv.set( this, "blur", ... )
  			leverageNative( this, type, expectSync );
  
  			// Return false to allow normal processing in the caller
  			return false;
  		},
  		trigger: function() {
  
  			// Force setup before trigger
  			leverageNative( this, type );
  
  			// Return non-false to allow normal event-path propagation
  			return true;
  		},
  
  		delegateType: delegateType
  	};
  } );
  
  // Create mouseenter/leave events using mouseover/out and event-time checks
  // so that event delegation works in jQuery.
  // Do the same for pointerenter/pointerleave and pointerover/pointerout
  //
  // Support: Safari 7 only
  // Safari sends mouseenter too often; see:
  // https://bugs.chromium.org/p/chromium/issues/detail?id=470258
  // for the description of the bug (it existed in older Chrome versions as well).
  jQuery.each( {
  	mouseenter: "mouseover",
  	mouseleave: "mouseout",
  	pointerenter: "pointerover",
  	pointerleave: "pointerout"
  }, function( orig, fix ) {
  	jQuery.event.special[ orig ] = {
  		delegateType: fix,
  		bindType: fix,
  
  		handle: function( event ) {
  			var ret,
  				target = this,
  				related = event.relatedTarget,
  				handleObj = event.handleObj;
  
  			// For mouseenter/leave call the handler if related is outside the target.
  			// NB: No relatedTarget if the mouse left/entered the browser window
  			if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {
  				event.type = handleObj.origType;
  				ret = handleObj.handler.apply( this, arguments );
  				event.type = fix;
  			}
  			return ret;
  		}
  	};
  } );
  
  jQuery.fn.extend( {
  
  	on: function( types, selector, data, fn ) {
  		return on( this, types, selector, data, fn );
  	},
  	one: function( types, selector, data, fn ) {
  		return on( this, types, selector, data, fn, 1 );
  	},
  	off: function( types, selector, fn ) {
  		var handleObj, type;
  		if ( types && types.preventDefault && types.handleObj ) {
  
  			// ( event )  dispatched jQuery.Event
  			handleObj = types.handleObj;
  			jQuery( types.delegateTarget ).off(
  				handleObj.namespace ?
  					handleObj.origType + "." + handleObj.namespace :
  					handleObj.origType,
  				handleObj.selector,
  				handleObj.handler
  			);
  			return this;
  		}
  		if ( typeof types === "object" ) {
  
  			// ( types-object [, selector] )
  			for ( type in types ) {
  				this.off( type, selector, types[ type ] );
  			}
  			return this;
  		}
  		if ( selector === false || typeof selector === "function" ) {
  
  			// ( types [, fn] )
  			fn = selector;
  			selector = undefined;
  		}
  		if ( fn === false ) {
  			fn = returnFalse;
  		}
  		return this.each( function() {
  			jQuery.event.remove( this, types, fn, selector );
  		} );
  	}
  } );
  
  
  var
  
  	// Support: IE <=10 - 11, Edge 12 - 13 only
  	// In IE/Edge using regex groups here causes severe slowdowns.
  	// See https://connect.microsoft.com/IE/feedback/details/1736512/
  	rnoInnerhtml = /<script|<style|<link/i,
  
  	// checked="checked" or checked
  	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
  	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;
  
  // Prefer a tbody over its parent table for containing new rows
  function manipulationTarget( elem, content ) {
  	if ( nodeName( elem, "table" ) &&
  		nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) {
  
  		return jQuery( elem ).children( "tbody" )[ 0 ] || elem;
  	}
  
  	return elem;
  }
  
  // Replace/restore the type attribute of script elements for safe DOM manipulation
  function disableScript( elem ) {
  	elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type;
  	return elem;
  }
  function restoreScript( elem ) {
  	if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) {
  		elem.type = elem.type.slice( 5 );
  	} else {
  		elem.removeAttribute( "type" );
  	}
  
  	return elem;
  }
  
  function cloneCopyEvent( src, dest ) {
  	var i, l, type, pdataOld, udataOld, udataCur, events;
  
  	if ( dest.nodeType !== 1 ) {
  		return;
  	}
  
  	// 1. Copy private data: events, handlers, etc.
  	if ( dataPriv.hasData( src ) ) {
  		pdataOld = dataPriv.get( src );
  		events = pdataOld.events;
  
  		if ( events ) {
  			dataPriv.remove( dest, "handle events" );
  
  			for ( type in events ) {
  				for ( i = 0, l = events[ type ].length; i < l; i++ ) {
  					jQuery.event.add( dest, type, events[ type ][ i ] );
  				}
  			}
  		}
  	}
  
  	// 2. Copy user data
  	if ( dataUser.hasData( src ) ) {
  		udataOld = dataUser.access( src );
  		udataCur = jQuery.extend( {}, udataOld );
  
  		dataUser.set( dest, udataCur );
  	}
  }
  
  // Fix IE bugs, see support tests
  function fixInput( src, dest ) {
  	var nodeName = dest.nodeName.toLowerCase();
  
  	// Fails to persist the checked state of a cloned checkbox or radio button.
  	if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
  		dest.checked = src.checked;
  
  	// Fails to return the selected option to the default selected state when cloning options
  	} else if ( nodeName === "input" || nodeName === "textarea" ) {
  		dest.defaultValue = src.defaultValue;
  	}
  }
  
  function domManip( collection, args, callback, ignored ) {
  
  	// Flatten any nested arrays
  	args = flat( args );
  
  	var fragment, first, scripts, hasScripts, node, doc,
  		i = 0,
  		l = collection.length,
  		iNoClone = l - 1,
  		value = args[ 0 ],
  		valueIsFunction = isFunction( value );
  
  	// We can't cloneNode fragments that contain checked, in WebKit
  	if ( valueIsFunction ||
  			( l > 1 && typeof value === "string" &&
  				!support.checkClone && rchecked.test( value ) ) ) {
  		return collection.each( function( index ) {
  			var self = collection.eq( index );
  			if ( valueIsFunction ) {
  				args[ 0 ] = value.call( this, index, self.html() );
  			}
  			domManip( self, args, callback, ignored );
  		} );
  	}
  
  	if ( l ) {
  		fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );
  		first = fragment.firstChild;
  
  		if ( fragment.childNodes.length === 1 ) {
  			fragment = first;
  		}
  
  		// Require either new content or an interest in ignored elements to invoke the callback
  		if ( first || ignored ) {
  			scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
  			hasScripts = scripts.length;
  
  			// Use the original fragment for the last item
  			// instead of the first because it can end up
  			// being emptied incorrectly in certain situations (#8070).
  			for ( ; i < l; i++ ) {
  				node = fragment;
  
  				if ( i !== iNoClone ) {
  					node = jQuery.clone( node, true, true );
  
  					// Keep references to cloned scripts for later restoration
  					if ( hasScripts ) {
  
  						// Support: Android <=4.0 only, PhantomJS 1 only
  						// push.apply(_, arraylike) throws on ancient WebKit
  						jQuery.merge( scripts, getAll( node, "script" ) );
  					}
  				}
  
  				callback.call( collection[ i ], node, i );
  			}
  
  			if ( hasScripts ) {
  				doc = scripts[ scripts.length - 1 ].ownerDocument;
  
  				// Reenable scripts
  				jQuery.map( scripts, restoreScript );
  
  				// Evaluate executable scripts on first document insertion
  				for ( i = 0; i < hasScripts; i++ ) {
  					node = scripts[ i ];
  					if ( rscriptType.test( node.type || "" ) &&
  						!dataPriv.access( node, "globalEval" ) &&
  						jQuery.contains( doc, node ) ) {
  
  						if ( node.src && ( node.type || "" ).toLowerCase()  !== "module" ) {
  
  							// Optional AJAX dependency, but won't run scripts if not present
  							if ( jQuery._evalUrl && !node.noModule ) {
  								jQuery._evalUrl( node.src, {
  									nonce: node.nonce || node.getAttribute( "nonce" )
  								}, doc );
  							}
  						} else {
  							DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc );
  						}
  					}
  				}
  			}
  		}
  	}
  
  	return collection;
  }
  
  function remove( elem, selector, keepData ) {
  	var node,
  		nodes = selector ? jQuery.filter( selector, elem ) : elem,
  		i = 0;
  
  	for ( ; ( node = nodes[ i ] ) != null; i++ ) {
  		if ( !keepData && node.nodeType === 1 ) {
  			jQuery.cleanData( getAll( node ) );
  		}
  
  		if ( node.parentNode ) {
  			if ( keepData && isAttached( node ) ) {
  				setGlobalEval( getAll( node, "script" ) );
  			}
  			node.parentNode.removeChild( node );
  		}
  	}
  
  	return elem;
  }
  
  jQuery.extend( {
  	htmlPrefilter: function( html ) {
  		return html;
  	},
  
  	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
  		var i, l, srcElements, destElements,
  			clone = elem.cloneNode( true ),
  			inPage = isAttached( elem );
  
  		// Fix IE cloning issues
  		if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&
  				!jQuery.isXMLDoc( elem ) ) {
  
  			// We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2
  			destElements = getAll( clone );
  			srcElements = getAll( elem );
  
  			for ( i = 0, l = srcElements.length; i < l; i++ ) {
  				fixInput( srcElements[ i ], destElements[ i ] );
  			}
  		}
  
  		// Copy the events from the original to the clone
  		if ( dataAndEvents ) {
  			if ( deepDataAndEvents ) {
  				srcElements = srcElements || getAll( elem );
  				destElements = destElements || getAll( clone );
  
  				for ( i = 0, l = srcElements.length; i < l; i++ ) {
  					cloneCopyEvent( srcElements[ i ], destElements[ i ] );
  				}
  			} else {
  				cloneCopyEvent( elem, clone );
  			}
  		}
  
  		// Preserve script evaluation history
  		destElements = getAll( clone, "script" );
  		if ( destElements.length > 0 ) {
  			setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
  		}
  
  		// Return the cloned set
  		return clone;
  	},
  
  	cleanData: function( elems ) {
  		var data, elem, type,
  			special = jQuery.event.special,
  			i = 0;
  
  		for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {
  			if ( acceptData( elem ) ) {
  				if ( ( data = elem[ dataPriv.expando ] ) ) {
  					if ( data.events ) {
  						for ( type in data.events ) {
  							if ( special[ type ] ) {
  								jQuery.event.remove( elem, type );
  
  							// This is a shortcut to avoid jQuery.event.remove's overhead
  							} else {
  								jQuery.removeEvent( elem, type, data.handle );
  							}
  						}
  					}
  
  					// Support: Chrome <=35 - 45+
  					// Assign undefined instead of using delete, see Data#remove
  					elem[ dataPriv.expando ] = undefined;
  				}
  				if ( elem[ dataUser.expando ] ) {
  
  					// Support: Chrome <=35 - 45+
  					// Assign undefined instead of using delete, see Data#remove
  					elem[ dataUser.expando ] = undefined;
  				}
  			}
  		}
  	}
  } );
  
  jQuery.fn.extend( {
  	detach: function( selector ) {
  		return remove( this, selector, true );
  	},
  
  	remove: function( selector ) {
  		return remove( this, selector );
  	},
  
  	text: function( value ) {
  		return access( this, function( value ) {
  			return value === undefined ?
  				jQuery.text( this ) :
  				this.empty().each( function() {
  					if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
  						this.textContent = value;
  					}
  				} );
  		}, null, value, arguments.length );
  	},
  
  	append: function() {
  		return domManip( this, arguments, function( elem ) {
  			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
  				var target = manipulationTarget( this, elem );
  				target.appendChild( elem );
  			}
  		} );
  	},
  
  	prepend: function() {
  		return domManip( this, arguments, function( elem ) {
  			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
  				var target = manipulationTarget( this, elem );
  				target.insertBefore( elem, target.firstChild );
  			}
  		} );
  	},
  
  	before: function() {
  		return domManip( this, arguments, function( elem ) {
  			if ( this.parentNode ) {
  				this.parentNode.insertBefore( elem, this );
  			}
  		} );
  	},
  
  	after: function() {
  		return domManip( this, arguments, function( elem ) {
  			if ( this.parentNode ) {
  				this.parentNode.insertBefore( elem, this.nextSibling );
  			}
  		} );
  	},
  
  	empty: function() {
  		var elem,
  			i = 0;
  
  		for ( ; ( elem = this[ i ] ) != null; i++ ) {
  			if ( elem.nodeType === 1 ) {
  
  				// Prevent memory leaks
  				jQuery.cleanData( getAll( elem, false ) );
  
  				// Remove any remaining nodes
  				elem.textContent = "";
  			}
  		}
  
  		return this;
  	},
  
  	clone: function( dataAndEvents, deepDataAndEvents ) {
  		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
  		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;
  
  		return this.map( function() {
  			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
  		} );
  	},
  
  	html: function( value ) {
  		return access( this, function( value ) {
  			var elem = this[ 0 ] || {},
  				i = 0,
  				l = this.length;
  
  			if ( value === undefined && elem.nodeType === 1 ) {
  				return elem.innerHTML;
  			}
  
  			// See if we can take a shortcut and just use innerHTML
  			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
  				!wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) {
  
  				value = jQuery.htmlPrefilter( value );
  
  				try {
  					for ( ; i < l; i++ ) {
  						elem = this[ i ] || {};
  
  						// Remove element nodes and prevent memory leaks
  						if ( elem.nodeType === 1 ) {
  							jQuery.cleanData( getAll( elem, false ) );
  							elem.innerHTML = value;
  						}
  					}
  
  					elem = 0;
  
  				// If using innerHTML throws an exception, use the fallback method
  				} catch ( e ) {}
  			}
  
  			if ( elem ) {
  				this.empty().append( value );
  			}
  		}, null, value, arguments.length );
  	},
  
  	replaceWith: function() {
  		var ignored = [];
  
  		// Make the changes, replacing each non-ignored context element with the new content
  		return domManip( this, arguments, function( elem ) {
  			var parent = this.parentNode;
  
  			if ( jQuery.inArray( this, ignored ) < 0 ) {
  				jQuery.cleanData( getAll( this ) );
  				if ( parent ) {
  					parent.replaceChild( elem, this );
  				}
  			}
  
  		// Force callback invocation
  		}, ignored );
  	}
  } );
  
  jQuery.each( {
  	appendTo: "append",
  	prependTo: "prepend",
  	insertBefore: "before",
  	insertAfter: "after",
  	replaceAll: "replaceWith"
  }, function( name, original ) {
  	jQuery.fn[ name ] = function( selector ) {
  		var elems,
  			ret = [],
  			insert = jQuery( selector ),
  			last = insert.length - 1,
  			i = 0;
  
  		for ( ; i <= last; i++ ) {
  			elems = i === last ? this : this.clone( true );
  			jQuery( insert[ i ] )[ original ]( elems );
  
  			// Support: Android <=4.0 only, PhantomJS 1 only
  			// .get() because push.apply(_, arraylike) throws on ancient WebKit
  			push.apply( ret, elems.get() );
  		}
  
  		return this.pushStack( ret );
  	};
  } );
  var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );
  
  var getStyles = function( elem ) {
  
  		// Support: IE <=11 only, Firefox <=30 (#15098, #14150)
  		// IE throws on elements created in popups
  		// FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
  		var view = elem.ownerDocument.defaultView;
  
  		if ( !view || !view.opener ) {
  			view = window;
  		}
  
  		return view.getComputedStyle( elem );
  	};
  
  var swap = function( elem, options, callback ) {
  	var ret, name,
  		old = {};
  
  	// Remember the old values, and insert the new ones
  	for ( name in options ) {
  		old[ name ] = elem.style[ name ];
  		elem.style[ name ] = options[ name ];
  	}
  
  	ret = callback.call( elem );
  
  	// Revert the old values
  	for ( name in options ) {
  		elem.style[ name ] = old[ name ];
  	}
  
  	return ret;
  };
  
  
  var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" );
  
  
  
  ( function() {
  
  	// Executing both pixelPosition & boxSizingReliable tests require only one layout
  	// so they're executed at the same time to save the second computation.
  	function computeStyleTests() {
  
  		// This is a singleton, we need to execute it only once
  		if ( !div ) {
  			return;
  		}
  
  		container.style.cssText = "position:absolute;left:-11111px;width:60px;" +
  			"margin-top:1px;padding:0;border:0";
  		div.style.cssText =
  			"position:relative;display:block;box-sizing:border-box;overflow:scroll;" +
  			"margin:auto;border:1px;padding:1px;" +
  			"width:60%;top:1%";
  		documentElement.appendChild( container ).appendChild( div );
  
  		var divStyle = window.getComputedStyle( div );
  		pixelPositionVal = divStyle.top !== "1%";
  
  		// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
  		reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12;
  
  		// Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3
  		// Some styles come back with percentage values, even though they shouldn't
  		div.style.right = "60%";
  		pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36;
  
  		// Support: IE 9 - 11 only
  		// Detect misreporting of content dimensions for box-sizing:border-box elements
  		boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36;
  
  		// Support: IE 9 only
  		// Detect overflow:scroll screwiness (gh-3699)
  		// Support: Chrome <=64
  		// Don't get tricked when zoom affects offsetWidth (gh-4029)
  		div.style.position = "absolute";
  		scrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12;
  
  		documentElement.removeChild( container );
  
  		// Nullify the div so it wouldn't be stored in the memory and
  		// it will also be a sign that checks already performed
  		div = null;
  	}
  
  	function roundPixelMeasures( measure ) {
  		return Math.round( parseFloat( measure ) );
  	}
  
  	var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,
  		reliableTrDimensionsVal, reliableMarginLeftVal,
  		container = document.createElement( "div" ),
  		div = document.createElement( "div" );
  
  	// Finish early in limited (non-browser) environments
  	if ( !div.style ) {
  		return;
  	}
  
  	// Support: IE <=9 - 11 only
  	// Style of cloned element affects source element cloned (#8908)
  	div.style.backgroundClip = "content-box";
  	div.cloneNode( true ).style.backgroundClip = "";
  	support.clearCloneStyle = div.style.backgroundClip === "content-box";
  
  	jQuery.extend( support, {
  		boxSizingReliable: function() {
  			computeStyleTests();
  			return boxSizingReliableVal;
  		},
  		pixelBoxStyles: function() {
  			computeStyleTests();
  			return pixelBoxStylesVal;
  		},
  		pixelPosition: function() {
  			computeStyleTests();
  			return pixelPositionVal;
  		},
  		reliableMarginLeft: function() {
  			computeStyleTests();
  			return reliableMarginLeftVal;
  		},
  		scrollboxSize: function() {
  			computeStyleTests();
  			return scrollboxSizeVal;
  		},
  
  		// Support: IE 9 - 11+, Edge 15 - 18+
  		// IE/Edge misreport `getComputedStyle` of table rows with width/height
  		// set in CSS while `offset*` properties report correct values.
  		// Behavior in IE 9 is more subtle than in newer versions & it passes
  		// some versions of this test; make sure not to make it pass there!
  		reliableTrDimensions: function() {
  			var table, tr, trChild, trStyle;
  			if ( reliableTrDimensionsVal == null ) {
  				table = document.createElement( "table" );
  				tr = document.createElement( "tr" );
  				trChild = document.createElement( "div" );
  
  				table.style.cssText = "position:absolute;left:-11111px";
  				tr.style.height = "1px";
  				trChild.style.height = "9px";
  
  				documentElement
  					.appendChild( table )
  					.appendChild( tr )
  					.appendChild( trChild );
  
  				trStyle = window.getComputedStyle( tr );
  				reliableTrDimensionsVal = parseInt( trStyle.height ) > 3;
  
  				documentElement.removeChild( table );
  			}
  			return reliableTrDimensionsVal;
  		}
  	} );
  } )();
  
  
  function curCSS( elem, name, computed ) {
  	var width, minWidth, maxWidth, ret,
  
  		// Support: Firefox 51+
  		// Retrieving style before computed somehow
  		// fixes an issue with getting wrong values
  		// on detached elements
  		style = elem.style;
  
  	computed = computed || getStyles( elem );
  
  	// getPropertyValue is needed for:
  	//   .css('filter') (IE 9 only, #12537)
  	//   .css('--customProperty) (#3144)
  	if ( computed ) {
  		ret = computed.getPropertyValue( name ) || computed[ name ];
  
  		if ( ret === "" && !isAttached( elem ) ) {
  			ret = jQuery.style( elem, name );
  		}
  
  		// A tribute to the "awesome hack by Dean Edwards"
  		// Android Browser returns percentage for some values,
  		// but width seems to be reliably pixels.
  		// This is against the CSSOM draft spec:
  		// https://drafts.csswg.org/cssom/#resolved-values
  		if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) {
  
  			// Remember the original values
  			width = style.width;
  			minWidth = style.minWidth;
  			maxWidth = style.maxWidth;
  
  			// Put in the new values to get a computed value out
  			style.minWidth = style.maxWidth = style.width = ret;
  			ret = computed.width;
  
  			// Revert the changed values
  			style.width = width;
  			style.minWidth = minWidth;
  			style.maxWidth = maxWidth;
  		}
  	}
  
  	return ret !== undefined ?
  
  		// Support: IE <=9 - 11 only
  		// IE returns zIndex value as an integer.
  		ret + "" :
  		ret;
  }
  
  
  function addGetHookIf( conditionFn, hookFn ) {
  
  	// Define the hook, we'll check on the first run if it's really needed.
  	return {
  		get: function() {
  			if ( conditionFn() ) {
  
  				// Hook not needed (or it's not possible to use it due
  				// to missing dependency), remove it.
  				delete this.get;
  				return;
  			}
  
  			// Hook needed; redefine it so that the support test is not executed again.
  			return ( this.get = hookFn ).apply( this, arguments );
  		}
  	};
  }
  
  
  var cssPrefixes = [ "Webkit", "Moz", "ms" ],
  	emptyStyle = document.createElement( "div" ).style,
  	vendorProps = {};
  
  // Return a vendor-prefixed property or undefined
  function vendorPropName( name ) {
  
  	// Check for vendor prefixed names
  	var capName = name[ 0 ].toUpperCase() + name.slice( 1 ),
  		i = cssPrefixes.length;
  
  	while ( i-- ) {
  		name = cssPrefixes[ i ] + capName;
  		if ( name in emptyStyle ) {
  			return name;
  		}
  	}
  }
  
  // Return a potentially-mapped jQuery.cssProps or vendor prefixed property
  function finalPropName( name ) {
  	var final = jQuery.cssProps[ name ] || vendorProps[ name ];
  
  	if ( final ) {
  		return final;
  	}
  	if ( name in emptyStyle ) {
  		return name;
  	}
  	return vendorProps[ name ] = vendorPropName( name ) || name;
  }
  
  
  var
  
  	// Swappable if display is none or starts with table
  	// except "table", "table-cell", or "table-caption"
  	// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
  	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
  	rcustomProp = /^--/,
  	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
  	cssNormalTransform = {
  		letterSpacing: "0",
  		fontWeight: "400"
  	};
  
  function setPositiveNumber( _elem, value, subtract ) {
  
  	// Any relative (+/-) values have already been
  	// normalized at this point
  	var matches = rcssNum.exec( value );
  	return matches ?
  
  		// Guard against undefined "subtract", e.g., when used as in cssHooks
  		Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) :
  		value;
  }
  
  function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) {
  	var i = dimension === "width" ? 1 : 0,
  		extra = 0,
  		delta = 0;
  
  	// Adjustment may not be necessary
  	if ( box === ( isBorderBox ? "border" : "content" ) ) {
  		return 0;
  	}
  
  	for ( ; i < 4; i += 2 ) {
  
  		// Both box models exclude margin
  		if ( box === "margin" ) {
  			delta += jQuery.css( elem, box + cssExpand[ i ], true, styles );
  		}
  
  		// If we get here with a content-box, we're seeking "padding" or "border" or "margin"
  		if ( !isBorderBox ) {
  
  			// Add padding
  			delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
  
  			// For "border" or "margin", add border
  			if ( box !== "padding" ) {
  				delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
  
  			// But still keep track of it otherwise
  			} else {
  				extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
  			}
  
  		// If we get here with a border-box (content + padding + border), we're seeking "content" or
  		// "padding" or "margin"
  		} else {
  
  			// For "content", subtract padding
  			if ( box === "content" ) {
  				delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
  			}
  
  			// For "content" or "padding", subtract border
  			if ( box !== "margin" ) {
  				delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
  			}
  		}
  	}
  
  	// Account for positive content-box scroll gutter when requested by providing computedVal
  	if ( !isBorderBox && computedVal >= 0 ) {
  
  		// offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border
  		// Assuming integer scroll gutter, subtract the rest and round down
  		delta += Math.max( 0, Math.ceil(
  			elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -
  			computedVal -
  			delta -
  			extra -
  			0.5
  
  		// If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter
  		// Use an explicit zero to avoid NaN (gh-3964)
  		) ) || 0;
  	}
  
  	return delta;
  }
  
  function getWidthOrHeight( elem, dimension, extra ) {
  
  	// Start with computed style
  	var styles = getStyles( elem ),
  
  		// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322).
  		// Fake content-box until we know it's needed to know the true value.
  		boxSizingNeeded = !support.boxSizingReliable() || extra,
  		isBorderBox = boxSizingNeeded &&
  			jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
  		valueIsBorderBox = isBorderBox,
  
  		val = curCSS( elem, dimension, styles ),
  		offsetProp = "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 );
  
  	// Support: Firefox <=54
  	// Return a confounding non-pixel value or feign ignorance, as appropriate.
  	if ( rnumnonpx.test( val ) ) {
  		if ( !extra ) {
  			return val;
  		}
  		val = "auto";
  	}
  
  
  	// Support: IE 9 - 11 only
  	// Use offsetWidth/offsetHeight for when box sizing is unreliable.
  	// In those cases, the computed value can be trusted to be border-box.
  	if ( ( !support.boxSizingReliable() && isBorderBox ||
  
  		// Support: IE 10 - 11+, Edge 15 - 18+
  		// IE/Edge misreport `getComputedStyle` of table rows with width/height
  		// set in CSS while `offset*` properties report correct values.
  		// Interestingly, in some cases IE 9 doesn't suffer from this issue.
  		!support.reliableTrDimensions() && nodeName( elem, "tr" ) ||
  
  		// Fall back to offsetWidth/offsetHeight when value is "auto"
  		// This happens for inline elements with no explicit setting (gh-3571)
  		val === "auto" ||
  
  		// Support: Android <=4.1 - 4.3 only
  		// Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)
  		!parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) &&
  
  		// Make sure the element is visible & connected
  		elem.getClientRects().length ) {
  
  		isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
  
  		// Where available, offsetWidth/offsetHeight approximate border box dimensions.
  		// Where not available (e.g., SVG), assume unreliable box-sizing and interpret the
  		// retrieved value as a content box dimension.
  		valueIsBorderBox = offsetProp in elem;
  		if ( valueIsBorderBox ) {
  			val = elem[ offsetProp ];
  		}
  	}
  
  	// Normalize "" and auto
  	val = parseFloat( val ) || 0;
  
  	// Adjust for the element's box model
  	return ( val +
  		boxModelAdjustment(
  			elem,
  			dimension,
  			extra || ( isBorderBox ? "border" : "content" ),
  			valueIsBorderBox,
  			styles,
  
  			// Provide the current computed size to request scroll gutter calculation (gh-3589)
  			val
  		)
  	) + "px";
  }
  
  jQuery.extend( {
  
  	// Add in style property hooks for overriding the default
  	// behavior of getting and setting a style property
  	cssHooks: {
  		opacity: {
  			get: function( elem, computed ) {
  				if ( computed ) {
  
  					// We should always get a number back from opacity
  					var ret = curCSS( elem, "opacity" );
  					return ret === "" ? "1" : ret;
  				}
  			}
  		}
  	},
  
  	// Don't automatically add "px" to these possibly-unitless properties
  	cssNumber: {
  		"animationIterationCount": true,
  		"columnCount": true,
  		"fillOpacity": true,
  		"flexGrow": true,
  		"flexShrink": true,
  		"fontWeight": true,
  		"gridArea": true,
  		"gridColumn": true,
  		"gridColumnEnd": true,
  		"gridColumnStart": true,
  		"gridRow": true,
  		"gridRowEnd": true,
  		"gridRowStart": true,
  		"lineHeight": true,
  		"opacity": true,
  		"order": true,
  		"orphans": true,
  		"widows": true,
  		"zIndex": true,
  		"zoom": true
  	},
  
  	// Add in properties whose names you wish to fix before
  	// setting or getting the value
  	cssProps: {},
  
  	// Get and set the style property on a DOM Node
  	style: function( elem, name, value, extra ) {
  
  		// Don't set styles on text and comment nodes
  		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
  			return;
  		}
  
  		// Make sure that we're working with the right name
  		var ret, type, hooks,
  			origName = camelCase( name ),
  			isCustomProp = rcustomProp.test( name ),
  			style = elem.style;
  
  		// Make sure that we're working with the right name. We don't
  		// want to query the value if it is a CSS custom property
  		// since they are user-defined.
  		if ( !isCustomProp ) {
  			name = finalPropName( origName );
  		}
  
  		// Gets hook for the prefixed version, then unprefixed version
  		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
  
  		// Check if we're setting a value
  		if ( value !== undefined ) {
  			type = typeof value;
  
  			// Convert "+=" or "-=" to relative numbers (#7345)
  			if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {
  				value = adjustCSS( elem, name, ret );
  
  				// Fixes bug #9237
  				type = "number";
  			}
  
  			// Make sure that null and NaN values aren't set (#7116)
  			if ( value == null || value !== value ) {
  				return;
  			}
  
  			// If a number was passed in, add the unit (except for certain CSS properties)
  			// The isCustomProp check can be removed in jQuery 4.0 when we only auto-append
  			// "px" to a few hardcoded values.
  			if ( type === "number" && !isCustomProp ) {
  				value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
  			}
  
  			// background-* props affect original clone's values
  			if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) {
  				style[ name ] = "inherit";
  			}
  
  			// If a hook was provided, use that value, otherwise just set the specified value
  			if ( !hooks || !( "set" in hooks ) ||
  				( value = hooks.set( elem, value, extra ) ) !== undefined ) {
  
  				if ( isCustomProp ) {
  					style.setProperty( name, value );
  				} else {
  					style[ name ] = value;
  				}
  			}
  
  		} else {
  
  			// If a hook was provided get the non-computed value from there
  			if ( hooks && "get" in hooks &&
  				( ret = hooks.get( elem, false, extra ) ) !== undefined ) {
  
  				return ret;
  			}
  
  			// Otherwise just get the value from the style object
  			return style[ name ];
  		}
  	},
  
  	css: function( elem, name, extra, styles ) {
  		var val, num, hooks,
  			origName = camelCase( name ),
  			isCustomProp = rcustomProp.test( name );
  
  		// Make sure that we're working with the right name. We don't
  		// want to modify the value if it is a CSS custom property
  		// since they are user-defined.
  		if ( !isCustomProp ) {
  			name = finalPropName( origName );
  		}
  
  		// Try prefixed name followed by the unprefixed name
  		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
  
  		// If a hook was provided get the computed value from there
  		if ( hooks && "get" in hooks ) {
  			val = hooks.get( elem, true, extra );
  		}
  
  		// Otherwise, if a way to get the computed value exists, use that
  		if ( val === undefined ) {
  			val = curCSS( elem, name, styles );
  		}
  
  		// Convert "normal" to computed value
  		if ( val === "normal" && name in cssNormalTransform ) {
  			val = cssNormalTransform[ name ];
  		}
  
  		// Make numeric if forced or a qualifier was provided and val looks numeric
  		if ( extra === "" || extra ) {
  			num = parseFloat( val );
  			return extra === true || isFinite( num ) ? num || 0 : val;
  		}
  
  		return val;
  	}
  } );
  
  jQuery.each( [ "height", "width" ], function( _i, dimension ) {
  	jQuery.cssHooks[ dimension ] = {
  		get: function( elem, computed, extra ) {
  			if ( computed ) {
  
  				// Certain elements can have dimension info if we invisibly show them
  				// but it must have a current display style that would benefit
  				return rdisplayswap.test( jQuery.css( elem, "display" ) ) &&
  
  					// Support: Safari 8+
  					// Table columns in Safari have non-zero offsetWidth & zero
  					// getBoundingClientRect().width unless display is changed.
  					// Support: IE <=11 only
  					// Running getBoundingClientRect on a disconnected node
  					// in IE throws an error.
  					( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?
  						swap( elem, cssShow, function() {
  							return getWidthOrHeight( elem, dimension, extra );
  						} ) :
  						getWidthOrHeight( elem, dimension, extra );
  			}
  		},
  
  		set: function( elem, value, extra ) {
  			var matches,
  				styles = getStyles( elem ),
  
  				// Only read styles.position if the test has a chance to fail
  				// to avoid forcing a reflow.
  				scrollboxSizeBuggy = !support.scrollboxSize() &&
  					styles.position === "absolute",
  
  				// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991)
  				boxSizingNeeded = scrollboxSizeBuggy || extra,
  				isBorderBox = boxSizingNeeded &&
  					jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
  				subtract = extra ?
  					boxModelAdjustment(
  						elem,
  						dimension,
  						extra,
  						isBorderBox,
  						styles
  					) :
  					0;
  
  			// Account for unreliable border-box dimensions by comparing offset* to computed and
  			// faking a content-box to get border and padding (gh-3699)
  			if ( isBorderBox && scrollboxSizeBuggy ) {
  				subtract -= Math.ceil(
  					elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -
  					parseFloat( styles[ dimension ] ) -
  					boxModelAdjustment( elem, dimension, "border", false, styles ) -
  					0.5
  				);
  			}
  
  			// Convert to pixels if value adjustment is needed
  			if ( subtract && ( matches = rcssNum.exec( value ) ) &&
  				( matches[ 3 ] || "px" ) !== "px" ) {
  
  				elem.style[ dimension ] = value;
  				value = jQuery.css( elem, dimension );
  			}
  
  			return setPositiveNumber( elem, value, subtract );
  		}
  	};
  } );
  
  jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
  	function( elem, computed ) {
  		if ( computed ) {
  			return ( parseFloat( curCSS( elem, "marginLeft" ) ) ||
  				elem.getBoundingClientRect().left -
  					swap( elem, { marginLeft: 0 }, function() {
  						return elem.getBoundingClientRect().left;
  					} )
  				) + "px";
  		}
  	}
  );
  
  // These hooks are used by animate to expand properties
  jQuery.each( {
  	margin: "",
  	padding: "",
  	border: "Width"
  }, function( prefix, suffix ) {
  	jQuery.cssHooks[ prefix + suffix ] = {
  		expand: function( value ) {
  			var i = 0,
  				expanded = {},
  
  				// Assumes a single number if not a string
  				parts = typeof value === "string" ? value.split( " " ) : [ value ];
  
  			for ( ; i < 4; i++ ) {
  				expanded[ prefix + cssExpand[ i ] + suffix ] =
  					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
  			}
  
  			return expanded;
  		}
  	};
  
  	if ( prefix !== "margin" ) {
  		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
  	}
  } );
  
  jQuery.fn.extend( {
  	css: function( name, value ) {
  		return access( this, function( elem, name, value ) {
  			var styles, len,
  				map = {},
  				i = 0;
  
  			if ( Array.isArray( name ) ) {
  				styles = getStyles( elem );
  				len = name.length;
  
  				for ( ; i < len; i++ ) {
  					map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
  				}
  
  				return map;
  			}
  
  			return value !== undefined ?
  				jQuery.style( elem, name, value ) :
  				jQuery.css( elem, name );
  		}, name, value, arguments.length > 1 );
  	}
  } );
  
  
  function Tween( elem, options, prop, end, easing ) {
  	return new Tween.prototype.init( elem, options, prop, end, easing );
  }
  jQuery.Tween = Tween;
  
  Tween.prototype = {
  	constructor: Tween,
  	init: function( elem, options, prop, end, easing, unit ) {
  		this.elem = elem;
  		this.prop = prop;
  		this.easing = easing || jQuery.easing._default;
  		this.options = options;
  		this.start = this.now = this.cur();
  		this.end = end;
  		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
  	},
  	cur: function() {
  		var hooks = Tween.propHooks[ this.prop ];
  
  		return hooks && hooks.get ?
  			hooks.get( this ) :
  			Tween.propHooks._default.get( this );
  	},
  	run: function( percent ) {
  		var eased,
  			hooks = Tween.propHooks[ this.prop ];
  
  		if ( this.options.duration ) {
  			this.pos = eased = jQuery.easing[ this.easing ](
  				percent, this.options.duration * percent, 0, 1, this.options.duration
  			);
  		} else {
  			this.pos = eased = percent;
  		}
  		this.now = ( this.end - this.start ) * eased + this.start;
  
  		if ( this.options.step ) {
  			this.options.step.call( this.elem, this.now, this );
  		}
  
  		if ( hooks && hooks.set ) {
  			hooks.set( this );
  		} else {
  			Tween.propHooks._default.set( this );
  		}
  		return this;
  	}
  };
  
  Tween.prototype.init.prototype = Tween.prototype;
  
  Tween.propHooks = {
  	_default: {
  		get: function( tween ) {
  			var result;
  
  			// Use a property on the element directly when it is not a DOM element,
  			// or when there is no matching style property that exists.
  			if ( tween.elem.nodeType !== 1 ||
  				tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {
  				return tween.elem[ tween.prop ];
  			}
  
  			// Passing an empty string as a 3rd parameter to .css will automatically
  			// attempt a parseFloat and fallback to a string if the parse fails.
  			// Simple values such as "10px" are parsed to Float;
  			// complex values such as "rotate(1rad)" are returned as-is.
  			result = jQuery.css( tween.elem, tween.prop, "" );
  
  			// Empty strings, null, undefined and "auto" are converted to 0.
  			return !result || result === "auto" ? 0 : result;
  		},
  		set: function( tween ) {
  
  			// Use step hook for back compat.
  			// Use cssHook if its there.
  			// Use .style if available and use plain properties where available.
  			if ( jQuery.fx.step[ tween.prop ] ) {
  				jQuery.fx.step[ tween.prop ]( tween );
  			} else if ( tween.elem.nodeType === 1 && (
  					jQuery.cssHooks[ tween.prop ] ||
  					tween.elem.style[ finalPropName( tween.prop ) ] != null ) ) {
  				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
  			} else {
  				tween.elem[ tween.prop ] = tween.now;
  			}
  		}
  	}
  };
  
  // Support: IE <=9 only
  // Panic based approach to setting things on disconnected nodes
  Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
  	set: function( tween ) {
  		if ( tween.elem.nodeType && tween.elem.parentNode ) {
  			tween.elem[ tween.prop ] = tween.now;
  		}
  	}
  };
  
  jQuery.easing = {
  	linear: function( p ) {
  		return p;
  	},
  	swing: function( p ) {
  		return 0.5 - Math.cos( p * Math.PI ) / 2;
  	},
  	_default: "swing"
  };
  
  jQuery.fx = Tween.prototype.init;
  
  // Back compat <1.8 extension point
  jQuery.fx.step = {};
  
  
  
  
  var
  	fxNow, inProgress,
  	rfxtypes = /^(?:toggle|show|hide)$/,
  	rrun = /queueHooks$/;
  
  function schedule() {
  	if ( inProgress ) {
  		if ( document.hidden === false && window.requestAnimationFrame ) {
  			window.requestAnimationFrame( schedule );
  		} else {
  			window.setTimeout( schedule, jQuery.fx.interval );
  		}
  
  		jQuery.fx.tick();
  	}
  }
  
  // Animations created synchronously will run synchronously
  function createFxNow() {
  	window.setTimeout( function() {
  		fxNow = undefined;
  	} );
  	return ( fxNow = Date.now() );
  }
  
  // Generate parameters to create a standard animation
  function genFx( type, includeWidth ) {
  	var which,
  		i = 0,
  		attrs = { height: type };
  
  	// If we include width, step value is 1 to do all cssExpand values,
  	// otherwise step value is 2 to skip over Left and Right
  	includeWidth = includeWidth ? 1 : 0;
  	for ( ; i < 4; i += 2 - includeWidth ) {
  		which = cssExpand[ i ];
  		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
  	}
  
  	if ( includeWidth ) {
  		attrs.opacity = attrs.width = type;
  	}
  
  	return attrs;
  }
  
  function createTween( value, prop, animation ) {
  	var tween,
  		collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ),
  		index = 0,
  		length = collection.length;
  	for ( ; index < length; index++ ) {
  		if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {
  
  			// We're done with this property
  			return tween;
  		}
  	}
  }
  
  function defaultPrefilter( elem, props, opts ) {
  	var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,
  		isBox = "width" in props || "height" in props,
  		anim = this,
  		orig = {},
  		style = elem.style,
  		hidden = elem.nodeType && isHiddenWithinTree( elem ),
  		dataShow = dataPriv.get( elem, "fxshow" );
  
  	// Queue-skipping animations hijack the fx hooks
  	if ( !opts.queue ) {
  		hooks = jQuery._queueHooks( elem, "fx" );
  		if ( hooks.unqueued == null ) {
  			hooks.unqueued = 0;
  			oldfire = hooks.empty.fire;
  			hooks.empty.fire = function() {
  				if ( !hooks.unqueued ) {
  					oldfire();
  				}
  			};
  		}
  		hooks.unqueued++;
  
  		anim.always( function() {
  
  			// Ensure the complete handler is called before this completes
  			anim.always( function() {
  				hooks.unqueued--;
  				if ( !jQuery.queue( elem, "fx" ).length ) {
  					hooks.empty.fire();
  				}
  			} );
  		} );
  	}
  
  	// Detect show/hide animations
  	for ( prop in props ) {
  		value = props[ prop ];
  		if ( rfxtypes.test( value ) ) {
  			delete props[ prop ];
  			toggle = toggle || value === "toggle";
  			if ( value === ( hidden ? "hide" : "show" ) ) {
  
  				// Pretend to be hidden if this is a "show" and
  				// there is still data from a stopped show/hide
  				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
  					hidden = true;
  
  				// Ignore all other no-op show/hide data
  				} else {
  					continue;
  				}
  			}
  			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );
  		}
  	}
  
  	// Bail out if this is a no-op like .hide().hide()
  	propTween = !jQuery.isEmptyObject( props );
  	if ( !propTween && jQuery.isEmptyObject( orig ) ) {
  		return;
  	}
  
  	// Restrict "overflow" and "display" styles during box animations
  	if ( isBox && elem.nodeType === 1 ) {
  
  		// Support: IE <=9 - 11, Edge 12 - 15
  		// Record all 3 overflow attributes because IE does not infer the shorthand
  		// from identically-valued overflowX and overflowY and Edge just mirrors
  		// the overflowX value there.
  		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];
  
  		// Identify a display type, preferring old show/hide data over the CSS cascade
  		restoreDisplay = dataShow && dataShow.display;
  		if ( restoreDisplay == null ) {
  			restoreDisplay = dataPriv.get( elem, "display" );
  		}
  		display = jQuery.css( elem, "display" );
  		if ( display === "none" ) {
  			if ( restoreDisplay ) {
  				display = restoreDisplay;
  			} else {
  
  				// Get nonempty value(s) by temporarily forcing visibility
  				showHide( [ elem ], true );
  				restoreDisplay = elem.style.display || restoreDisplay;
  				display = jQuery.css( elem, "display" );
  				showHide( [ elem ] );
  			}
  		}
  
  		// Animate inline elements as inline-block
  		if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) {
  			if ( jQuery.css( elem, "float" ) === "none" ) {
  
  				// Restore the original display value at the end of pure show/hide animations
  				if ( !propTween ) {
  					anim.done( function() {
  						style.display = restoreDisplay;
  					} );
  					if ( restoreDisplay == null ) {
  						display = style.display;
  						restoreDisplay = display === "none" ? "" : display;
  					}
  				}
  				style.display = "inline-block";
  			}
  		}
  	}
  
  	if ( opts.overflow ) {
  		style.overflow = "hidden";
  		anim.always( function() {
  			style.overflow = opts.overflow[ 0 ];
  			style.overflowX = opts.overflow[ 1 ];
  			style.overflowY = opts.overflow[ 2 ];
  		} );
  	}
  
  	// Implement show/hide animations
  	propTween = false;
  	for ( prop in orig ) {
  
  		// General show/hide setup for this element animation
  		if ( !propTween ) {
  			if ( dataShow ) {
  				if ( "hidden" in dataShow ) {
  					hidden = dataShow.hidden;
  				}
  			} else {
  				dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } );
  			}
  
  			// Store hidden/visible for toggle so `.stop().toggle()` "reverses"
  			if ( toggle ) {
  				dataShow.hidden = !hidden;
  			}
  
  			// Show elements before animating them
  			if ( hidden ) {
  				showHide( [ elem ], true );
  			}
  
  			/* eslint-disable no-loop-func */
  
  			anim.done( function() {
  
  			/* eslint-enable no-loop-func */
  
  				// The final step of a "hide" animation is actually hiding the element
  				if ( !hidden ) {
  					showHide( [ elem ] );
  				}
  				dataPriv.remove( elem, "fxshow" );
  				for ( prop in orig ) {
  					jQuery.style( elem, prop, orig[ prop ] );
  				}
  			} );
  		}
  
  		// Per-property setup
  		propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );
  		if ( !( prop in dataShow ) ) {
  			dataShow[ prop ] = propTween.start;
  			if ( hidden ) {
  				propTween.end = propTween.start;
  				propTween.start = 0;
  			}
  		}
  	}
  }
  
  function propFilter( props, specialEasing ) {
  	var index, name, easing, value, hooks;
  
  	// camelCase, specialEasing and expand cssHook pass
  	for ( index in props ) {
  		name = camelCase( index );
  		easing = specialEasing[ name ];
  		value = props[ index ];
  		if ( Array.isArray( value ) ) {
  			easing = value[ 1 ];
  			value = props[ index ] = value[ 0 ];
  		}
  
  		if ( index !== name ) {
  			props[ name ] = value;
  			delete props[ index ];
  		}
  
  		hooks = jQuery.cssHooks[ name ];
  		if ( hooks && "expand" in hooks ) {
  			value = hooks.expand( value );
  			delete props[ name ];
  
  			// Not quite $.extend, this won't overwrite existing keys.
  			// Reusing 'index' because we have the correct "name"
  			for ( index in value ) {
  				if ( !( index in props ) ) {
  					props[ index ] = value[ index ];
  					specialEasing[ index ] = easing;
  				}
  			}
  		} else {
  			specialEasing[ name ] = easing;
  		}
  	}
  }
  
  function Animation( elem, properties, options ) {
  	var result,
  		stopped,
  		index = 0,
  		length = Animation.prefilters.length,
  		deferred = jQuery.Deferred().always( function() {
  
  			// Don't match elem in the :animated selector
  			delete tick.elem;
  		} ),
  		tick = function() {
  			if ( stopped ) {
  				return false;
  			}
  			var currentTime = fxNow || createFxNow(),
  				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),
  
  				// Support: Android 2.3 only
  				// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497)
  				temp = remaining / animation.duration || 0,
  				percent = 1 - temp,
  				index = 0,
  				length = animation.tweens.length;
  
  			for ( ; index < length; index++ ) {
  				animation.tweens[ index ].run( percent );
  			}
  
  			deferred.notifyWith( elem, [ animation, percent, remaining ] );
  
  			// If there's more to do, yield
  			if ( percent < 1 && length ) {
  				return remaining;
  			}
  
  			// If this was an empty animation, synthesize a final progress notification
  			if ( !length ) {
  				deferred.notifyWith( elem, [ animation, 1, 0 ] );
  			}
  
  			// Resolve the animation and report its conclusion
  			deferred.resolveWith( elem, [ animation ] );
  			return false;
  		},
  		animation = deferred.promise( {
  			elem: elem,
  			props: jQuery.extend( {}, properties ),
  			opts: jQuery.extend( true, {
  				specialEasing: {},
  				easing: jQuery.easing._default
  			}, options ),
  			originalProperties: properties,
  			originalOptions: options,
  			startTime: fxNow || createFxNow(),
  			duration: options.duration,
  			tweens: [],
  			createTween: function( prop, end ) {
  				var tween = jQuery.Tween( elem, animation.opts, prop, end,
  						animation.opts.specialEasing[ prop ] || animation.opts.easing );
  				animation.tweens.push( tween );
  				return tween;
  			},
  			stop: function( gotoEnd ) {
  				var index = 0,
  
  					// If we are going to the end, we want to run all the tweens
  					// otherwise we skip this part
  					length = gotoEnd ? animation.tweens.length : 0;
  				if ( stopped ) {
  					return this;
  				}
  				stopped = true;
  				for ( ; index < length; index++ ) {
  					animation.tweens[ index ].run( 1 );
  				}
  
  				// Resolve when we played the last frame; otherwise, reject
  				if ( gotoEnd ) {
  					deferred.notifyWith( elem, [ animation, 1, 0 ] );
  					deferred.resolveWith( elem, [ animation, gotoEnd ] );
  				} else {
  					deferred.rejectWith( elem, [ animation, gotoEnd ] );
  				}
  				return this;
  			}
  		} ),
  		props = animation.props;
  
  	propFilter( props, animation.opts.specialEasing );
  
  	for ( ; index < length; index++ ) {
  		result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );
  		if ( result ) {
  			if ( isFunction( result.stop ) ) {
  				jQuery._queueHooks( animation.elem, animation.opts.queue ).stop =
  					result.stop.bind( result );
  			}
  			return result;
  		}
  	}
  
  	jQuery.map( props, createTween, animation );
  
  	if ( isFunction( animation.opts.start ) ) {
  		animation.opts.start.call( elem, animation );
  	}
  
  	// Attach callbacks from options
  	animation
  		.progress( animation.opts.progress )
  		.done( animation.opts.done, animation.opts.complete )
  		.fail( animation.opts.fail )
  		.always( animation.opts.always );
  
  	jQuery.fx.timer(
  		jQuery.extend( tick, {
  			elem: elem,
  			anim: animation,
  			queue: animation.opts.queue
  		} )
  	);
  
  	return animation;
  }
  
  jQuery.Animation = jQuery.extend( Animation, {
  
  	tweeners: {
  		"*": [ function( prop, value ) {
  			var tween = this.createTween( prop, value );
  			adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );
  			return tween;
  		} ]
  	},
  
  	tweener: function( props, callback ) {
  		if ( isFunction( props ) ) {
  			callback = props;
  			props = [ "*" ];
  		} else {
  			props = props.match( rnothtmlwhite );
  		}
  
  		var prop,
  			index = 0,
  			length = props.length;
  
  		for ( ; index < length; index++ ) {
  			prop = props[ index ];
  			Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];
  			Animation.tweeners[ prop ].unshift( callback );
  		}
  	},
  
  	prefilters: [ defaultPrefilter ],
  
  	prefilter: function( callback, prepend ) {
  		if ( prepend ) {
  			Animation.prefilters.unshift( callback );
  		} else {
  			Animation.prefilters.push( callback );
  		}
  	}
  } );
  
  jQuery.speed = function( speed, easing, fn ) {
  	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
  		complete: fn || !fn && easing ||
  			isFunction( speed ) && speed,
  		duration: speed,
  		easing: fn && easing || easing && !isFunction( easing ) && easing
  	};
  
  	// Go to the end state if fx are off
  	if ( jQuery.fx.off ) {
  		opt.duration = 0;
  
  	} else {
  		if ( typeof opt.duration !== "number" ) {
  			if ( opt.duration in jQuery.fx.speeds ) {
  				opt.duration = jQuery.fx.speeds[ opt.duration ];
  
  			} else {
  				opt.duration = jQuery.fx.speeds._default;
  			}
  		}
  	}
  
  	// Normalize opt.queue - true/undefined/null -> "fx"
  	if ( opt.queue == null || opt.queue === true ) {
  		opt.queue = "fx";
  	}
  
  	// Queueing
  	opt.old = opt.complete;
  
  	opt.complete = function() {
  		if ( isFunction( opt.old ) ) {
  			opt.old.call( this );
  		}
  
  		if ( opt.queue ) {
  			jQuery.dequeue( this, opt.queue );
  		}
  	};
  
  	return opt;
  };
  
  jQuery.fn.extend( {
  	fadeTo: function( speed, to, easing, callback ) {
  
  		// Show any hidden elements after setting opacity to 0
  		return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show()
  
  			// Animate to the value specified
  			.end().animate( { opacity: to }, speed, easing, callback );
  	},
  	animate: function( prop, speed, easing, callback ) {
  		var empty = jQuery.isEmptyObject( prop ),
  			optall = jQuery.speed( speed, easing, callback ),
  			doAnimation = function() {
  
  				// Operate on a copy of prop so per-property easing won't be lost
  				var anim = Animation( this, jQuery.extend( {}, prop ), optall );
  
  				// Empty animations, or finishing resolves immediately
  				if ( empty || dataPriv.get( this, "finish" ) ) {
  					anim.stop( true );
  				}
  			};
  			doAnimation.finish = doAnimation;
  
  		return empty || optall.queue === false ?
  			this.each( doAnimation ) :
  			this.queue( optall.queue, doAnimation );
  	},
  	stop: function( type, clearQueue, gotoEnd ) {
  		var stopQueue = function( hooks ) {
  			var stop = hooks.stop;
  			delete hooks.stop;
  			stop( gotoEnd );
  		};
  
  		if ( typeof type !== "string" ) {
  			gotoEnd = clearQueue;
  			clearQueue = type;
  			type = undefined;
  		}
  		if ( clearQueue ) {
  			this.queue( type || "fx", [] );
  		}
  
  		return this.each( function() {
  			var dequeue = true,
  				index = type != null && type + "queueHooks",
  				timers = jQuery.timers,
  				data = dataPriv.get( this );
  
  			if ( index ) {
  				if ( data[ index ] && data[ index ].stop ) {
  					stopQueue( data[ index ] );
  				}
  			} else {
  				for ( index in data ) {
  					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
  						stopQueue( data[ index ] );
  					}
  				}
  			}
  
  			for ( index = timers.length; index--; ) {
  				if ( timers[ index ].elem === this &&
  					( type == null || timers[ index ].queue === type ) ) {
  
  					timers[ index ].anim.stop( gotoEnd );
  					dequeue = false;
  					timers.splice( index, 1 );
  				}
  			}
  
  			// Start the next in the queue if the last step wasn't forced.
  			// Timers currently will call their complete callbacks, which
  			// will dequeue but only if they were gotoEnd.
  			if ( dequeue || !gotoEnd ) {
  				jQuery.dequeue( this, type );
  			}
  		} );
  	},
  	finish: function( type ) {
  		if ( type !== false ) {
  			type = type || "fx";
  		}
  		return this.each( function() {
  			var index,
  				data = dataPriv.get( this ),
  				queue = data[ type + "queue" ],
  				hooks = data[ type + "queueHooks" ],
  				timers = jQuery.timers,
  				length = queue ? queue.length : 0;
  
  			// Enable finishing flag on private data
  			data.finish = true;
  
  			// Empty the queue first
  			jQuery.queue( this, type, [] );
  
  			if ( hooks && hooks.stop ) {
  				hooks.stop.call( this, true );
  			}
  
  			// Look for any active animations, and finish them
  			for ( index = timers.length; index--; ) {
  				if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
  					timers[ index ].anim.stop( true );
  					timers.splice( index, 1 );
  				}
  			}
  
  			// Look for any animations in the old queue and finish them
  			for ( index = 0; index < length; index++ ) {
  				if ( queue[ index ] && queue[ index ].finish ) {
  					queue[ index ].finish.call( this );
  				}
  			}
  
  			// Turn off finishing flag
  			delete data.finish;
  		} );
  	}
  } );
  
  jQuery.each( [ "toggle", "show", "hide" ], function( _i, name ) {
  	var cssFn = jQuery.fn[ name ];
  	jQuery.fn[ name ] = function( speed, easing, callback ) {
  		return speed == null || typeof speed === "boolean" ?
  			cssFn.apply( this, arguments ) :
  			this.animate( genFx( name, true ), speed, easing, callback );
  	};
  } );
  
  // Generate shortcuts for custom animations
  jQuery.each( {
  	slideDown: genFx( "show" ),
  	slideUp: genFx( "hide" ),
  	slideToggle: genFx( "toggle" ),
  	fadeIn: { opacity: "show" },
  	fadeOut: { opacity: "hide" },
  	fadeToggle: { opacity: "toggle" }
  }, function( name, props ) {
  	jQuery.fn[ name ] = function( speed, easing, callback ) {
  		return this.animate( props, speed, easing, callback );
  	};
  } );
  
  jQuery.timers = [];
  jQuery.fx.tick = function() {
  	var timer,
  		i = 0,
  		timers = jQuery.timers;
  
  	fxNow = Date.now();
  
  	for ( ; i < timers.length; i++ ) {
  		timer = timers[ i ];
  
  		// Run the timer and safely remove it when done (allowing for external removal)
  		if ( !timer() && timers[ i ] === timer ) {
  			timers.splice( i--, 1 );
  		}
  	}
  
  	if ( !timers.length ) {
  		jQuery.fx.stop();
  	}
  	fxNow = undefined;
  };
  
  jQuery.fx.timer = function( timer ) {
  	jQuery.timers.push( timer );
  	jQuery.fx.start();
  };
  
  jQuery.fx.interval = 13;
  jQuery.fx.start = function() {
  	if ( inProgress ) {
  		return;
  	}
  
  	inProgress = true;
  	schedule();
  };
  
  jQuery.fx.stop = function() {
  	inProgress = null;
  };
  
  jQuery.fx.speeds = {
  	slow: 600,
  	fast: 200,
  
  	// Default speed
  	_default: 400
  };
  
  
  // Based off of the plugin by Clint Helfers, with permission.
  // https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
  jQuery.fn.delay = function( time, type ) {
  	time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
  	type = type || "fx";
  
  	return this.queue( type, function( next, hooks ) {
  		var timeout = window.setTimeout( next, time );
  		hooks.stop = function() {
  			window.clearTimeout( timeout );
  		};
  	} );
  };
  
  
  ( function() {
  	var input = document.createElement( "input" ),
  		select = document.createElement( "select" ),
  		opt = select.appendChild( document.createElement( "option" ) );
  
  	input.type = "checkbox";
  
  	// Support: Android <=4.3 only
  	// Default value for a checkbox should be "on"
  	support.checkOn = input.value !== "";
  
  	// Support: IE <=11 only
  	// Must access selectedIndex to make default options select
  	support.optSelected = opt.selected;
  
  	// Support: IE <=11 only
  	// An input loses its value after becoming a radio
  	input = document.createElement( "input" );
  	input.value = "t";
  	input.type = "radio";
  	support.radioValue = input.value === "t";
  } )();
  
  
  var boolHook,
  	attrHandle = jQuery.expr.attrHandle;
  
  jQuery.fn.extend( {
  	attr: function( name, value ) {
  		return access( this, jQuery.attr, name, value, arguments.length > 1 );
  	},
  
  	removeAttr: function( name ) {
  		return this.each( function() {
  			jQuery.removeAttr( this, name );
  		} );
  	}
  } );
  
  jQuery.extend( {
  	attr: function( elem, name, value ) {
  		var ret, hooks,
  			nType = elem.nodeType;
  
  		// Don't get/set attributes on text, comment and attribute nodes
  		if ( nType === 3 || nType === 8 || nType === 2 ) {
  			return;
  		}
  
  		// Fallback to prop when attributes are not supported
  		if ( typeof elem.getAttribute === "undefined" ) {
  			return jQuery.prop( elem, name, value );
  		}
  
  		// Attribute hooks are determined by the lowercase version
  		// Grab necessary hook if one is defined
  		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
  			hooks = jQuery.attrHooks[ name.toLowerCase() ] ||
  				( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );
  		}
  
  		if ( value !== undefined ) {
  			if ( value === null ) {
  				jQuery.removeAttr( elem, name );
  				return;
  			}
  
  			if ( hooks && "set" in hooks &&
  				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
  				return ret;
  			}
  
  			elem.setAttribute( name, value + "" );
  			return value;
  		}
  
  		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
  			return ret;
  		}
  
  		ret = jQuery.find.attr( elem, name );
  
  		// Non-existent attributes return null, we normalize to undefined
  		return ret == null ? undefined : ret;
  	},
  
  	attrHooks: {
  		type: {
  			set: function( elem, value ) {
  				if ( !support.radioValue && value === "radio" &&
  					nodeName( elem, "input" ) ) {
  					var val = elem.value;
  					elem.setAttribute( "type", value );
  					if ( val ) {
  						elem.value = val;
  					}
  					return value;
  				}
  			}
  		}
  	},
  
  	removeAttr: function( elem, value ) {
  		var name,
  			i = 0,
  
  			// Attribute names can contain non-HTML whitespace characters
  			// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
  			attrNames = value && value.match( rnothtmlwhite );
  
  		if ( attrNames && elem.nodeType === 1 ) {
  			while ( ( name = attrNames[ i++ ] ) ) {
  				elem.removeAttribute( name );
  			}
  		}
  	}
  } );
  
  // Hooks for boolean attributes
  boolHook = {
  	set: function( elem, value, name ) {
  		if ( value === false ) {
  
  			// Remove boolean attributes when set to false
  			jQuery.removeAttr( elem, name );
  		} else {
  			elem.setAttribute( name, name );
  		}
  		return name;
  	}
  };
  
  jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( _i, name ) {
  	var getter = attrHandle[ name ] || jQuery.find.attr;
  
  	attrHandle[ name ] = function( elem, name, isXML ) {
  		var ret, handle,
  			lowercaseName = name.toLowerCase();
  
  		if ( !isXML ) {
  
  			// Avoid an infinite loop by temporarily removing this function from the getter
  			handle = attrHandle[ lowercaseName ];
  			attrHandle[ lowercaseName ] = ret;
  			ret = getter( elem, name, isXML ) != null ?
  				lowercaseName :
  				null;
  			attrHandle[ lowercaseName ] = handle;
  		}
  		return ret;
  	};
  } );
  
  
  
  
  var rfocusable = /^(?:input|select|textarea|button)$/i,
  	rclickable = /^(?:a|area)$/i;
  
  jQuery.fn.extend( {
  	prop: function( name, value ) {
  		return access( this, jQuery.prop, name, value, arguments.length > 1 );
  	},
  
  	removeProp: function( name ) {
  		return this.each( function() {
  			delete this[ jQuery.propFix[ name ] || name ];
  		} );
  	}
  } );
  
  jQuery.extend( {
  	prop: function( elem, name, value ) {
  		var ret, hooks,
  			nType = elem.nodeType;
  
  		// Don't get/set properties on text, comment and attribute nodes
  		if ( nType === 3 || nType === 8 || nType === 2 ) {
  			return;
  		}
  
  		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
  
  			// Fix name and attach hooks
  			name = jQuery.propFix[ name ] || name;
  			hooks = jQuery.propHooks[ name ];
  		}
  
  		if ( value !== undefined ) {
  			if ( hooks && "set" in hooks &&
  				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
  				return ret;
  			}
  
  			return ( elem[ name ] = value );
  		}
  
  		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
  			return ret;
  		}
  
  		return elem[ name ];
  	},
  
  	propHooks: {
  		tabIndex: {
  			get: function( elem ) {
  
  				// Support: IE <=9 - 11 only
  				// elem.tabIndex doesn't always return the
  				// correct value when it hasn't been explicitly set
  				// https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
  				// Use proper attribute retrieval(#12072)
  				var tabindex = jQuery.find.attr( elem, "tabindex" );
  
  				if ( tabindex ) {
  					return parseInt( tabindex, 10 );
  				}
  
  				if (
  					rfocusable.test( elem.nodeName ) ||
  					rclickable.test( elem.nodeName ) &&
  					elem.href
  				) {
  					return 0;
  				}
  
  				return -1;
  			}
  		}
  	},
  
  	propFix: {
  		"for": "htmlFor",
  		"class": "className"
  	}
  } );
  
  // Support: IE <=11 only
  // Accessing the selectedIndex property
  // forces the browser to respect setting selected
  // on the option
  // The getter ensures a default option is selected
  // when in an optgroup
  // eslint rule "no-unused-expressions" is disabled for this code
  // since it considers such accessions noop
  if ( !support.optSelected ) {
  	jQuery.propHooks.selected = {
  		get: function( elem ) {
  
  			/* eslint no-unused-expressions: "off" */
  
  			var parent = elem.parentNode;
  			if ( parent && parent.parentNode ) {
  				parent.parentNode.selectedIndex;
  			}
  			return null;
  		},
  		set: function( elem ) {
  
  			/* eslint no-unused-expressions: "off" */
  
  			var parent = elem.parentNode;
  			if ( parent ) {
  				parent.selectedIndex;
  
  				if ( parent.parentNode ) {
  					parent.parentNode.selectedIndex;
  				}
  			}
  		}
  	};
  }
  
  jQuery.each( [
  	"tabIndex",
  	"readOnly",
  	"maxLength",
  	"cellSpacing",
  	"cellPadding",
  	"rowSpan",
  	"colSpan",
  	"useMap",
  	"frameBorder",
  	"contentEditable"
  ], function() {
  	jQuery.propFix[ this.toLowerCase() ] = this;
  } );
  
  
  
  
  	// Strip and collapse whitespace according to HTML spec
  	// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace
  	function stripAndCollapse( value ) {
  		var tokens = value.match( rnothtmlwhite ) || [];
  		return tokens.join( " " );
  	}
  
  
  function getClass( elem ) {
  	return elem.getAttribute && elem.getAttribute( "class" ) || "";
  }
  
  function classesToArray( value ) {
  	if ( Array.isArray( value ) ) {
  		return value;
  	}
  	if ( typeof value === "string" ) {
  		return value.match( rnothtmlwhite ) || [];
  	}
  	return [];
  }
  
  jQuery.fn.extend( {
  	addClass: function( value ) {
  		var classes, elem, cur, curValue, clazz, j, finalValue,
  			i = 0;
  
  		if ( isFunction( value ) ) {
  			return this.each( function( j ) {
  				jQuery( this ).addClass( value.call( this, j, getClass( this ) ) );
  			} );
  		}
  
  		classes = classesToArray( value );
  
  		if ( classes.length ) {
  			while ( ( elem = this[ i++ ] ) ) {
  				curValue = getClass( elem );
  				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );
  
  				if ( cur ) {
  					j = 0;
  					while ( ( clazz = classes[ j++ ] ) ) {
  						if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
  							cur += clazz + " ";
  						}
  					}
  
  					// Only assign if different to avoid unneeded rendering.
  					finalValue = stripAndCollapse( cur );
  					if ( curValue !== finalValue ) {
  						elem.setAttribute( "class", finalValue );
  					}
  				}
  			}
  		}
  
  		return this;
  	},
  
  	removeClass: function( value ) {
  		var classes, elem, cur, curValue, clazz, j, finalValue,
  			i = 0;
  
  		if ( isFunction( value ) ) {
  			return this.each( function( j ) {
  				jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );
  			} );
  		}
  
  		if ( !arguments.length ) {
  			return this.attr( "class", "" );
  		}
  
  		classes = classesToArray( value );
  
  		if ( classes.length ) {
  			while ( ( elem = this[ i++ ] ) ) {
  				curValue = getClass( elem );
  
  				// This expression is here for better compressibility (see addClass)
  				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );
  
  				if ( cur ) {
  					j = 0;
  					while ( ( clazz = classes[ j++ ] ) ) {
  
  						// Remove *all* instances
  						while ( cur.indexOf( " " + clazz + " " ) > -1 ) {
  							cur = cur.replace( " " + clazz + " ", " " );
  						}
  					}
  
  					// Only assign if different to avoid unneeded rendering.
  					finalValue = stripAndCollapse( cur );
  					if ( curValue !== finalValue ) {
  						elem.setAttribute( "class", finalValue );
  					}
  				}
  			}
  		}
  
  		return this;
  	},
  
  	toggleClass: function( value, stateVal ) {
  		var type = typeof value,
  			isValidValue = type === "string" || Array.isArray( value );
  
  		if ( typeof stateVal === "boolean" && isValidValue ) {
  			return stateVal ? this.addClass( value ) : this.removeClass( value );
  		}
  
  		if ( isFunction( value ) ) {
  			return this.each( function( i ) {
  				jQuery( this ).toggleClass(
  					value.call( this, i, getClass( this ), stateVal ),
  					stateVal
  				);
  			} );
  		}
  
  		return this.each( function() {
  			var className, i, self, classNames;
  
  			if ( isValidValue ) {
  
  				// Toggle individual class names
  				i = 0;
  				self = jQuery( this );
  				classNames = classesToArray( value );
  
  				while ( ( className = classNames[ i++ ] ) ) {
  
  					// Check each className given, space separated list
  					if ( self.hasClass( className ) ) {
  						self.removeClass( className );
  					} else {
  						self.addClass( className );
  					}
  				}
  
  			// Toggle whole class name
  			} else if ( value === undefined || type === "boolean" ) {
  				className = getClass( this );
  				if ( className ) {
  
  					// Store className if set
  					dataPriv.set( this, "__className__", className );
  				}
  
  				// If the element has a class name or if we're passed `false`,
  				// then remove the whole classname (if there was one, the above saved it).
  				// Otherwise bring back whatever was previously saved (if anything),
  				// falling back to the empty string if nothing was stored.
  				if ( this.setAttribute ) {
  					this.setAttribute( "class",
  						className || value === false ?
  						"" :
  						dataPriv.get( this, "__className__" ) || ""
  					);
  				}
  			}
  		} );
  	},
  
  	hasClass: function( selector ) {
  		var className, elem,
  			i = 0;
  
  		className = " " + selector + " ";
  		while ( ( elem = this[ i++ ] ) ) {
  			if ( elem.nodeType === 1 &&
  				( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) {
  					return true;
  			}
  		}
  
  		return false;
  	}
  } );
  
  
  
  
  var rreturn = /\r/g;
  
  jQuery.fn.extend( {
  	val: function( value ) {
  		var hooks, ret, valueIsFunction,
  			elem = this[ 0 ];
  
  		if ( !arguments.length ) {
  			if ( elem ) {
  				hooks = jQuery.valHooks[ elem.type ] ||
  					jQuery.valHooks[ elem.nodeName.toLowerCase() ];
  
  				if ( hooks &&
  					"get" in hooks &&
  					( ret = hooks.get( elem, "value" ) ) !== undefined
  				) {
  					return ret;
  				}
  
  				ret = elem.value;
  
  				// Handle most common string cases
  				if ( typeof ret === "string" ) {
  					return ret.replace( rreturn, "" );
  				}
  
  				// Handle cases where value is null/undef or number
  				return ret == null ? "" : ret;
  			}
  
  			return;
  		}
  
  		valueIsFunction = isFunction( value );
  
  		return this.each( function( i ) {
  			var val;
  
  			if ( this.nodeType !== 1 ) {
  				return;
  			}
  
  			if ( valueIsFunction ) {
  				val = value.call( this, i, jQuery( this ).val() );
  			} else {
  				val = value;
  			}
  
  			// Treat null/undefined as ""; convert numbers to string
  			if ( val == null ) {
  				val = "";
  
  			} else if ( typeof val === "number" ) {
  				val += "";
  
  			} else if ( Array.isArray( val ) ) {
  				val = jQuery.map( val, function( value ) {
  					return value == null ? "" : value + "";
  				} );
  			}
  
  			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];
  
  			// If set returns undefined, fall back to normal setting
  			if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) {
  				this.value = val;
  			}
  		} );
  	}
  } );
  
  jQuery.extend( {
  	valHooks: {
  		option: {
  			get: function( elem ) {
  
  				var val = jQuery.find.attr( elem, "value" );
  				return val != null ?
  					val :
  
  					// Support: IE <=10 - 11 only
  					// option.text throws exceptions (#14686, #14858)
  					// Strip and collapse whitespace
  					// https://html.spec.whatwg.org/#strip-and-collapse-whitespace
  					stripAndCollapse( jQuery.text( elem ) );
  			}
  		},
  		select: {
  			get: function( elem ) {
  				var value, option, i,
  					options = elem.options,
  					index = elem.selectedIndex,
  					one = elem.type === "select-one",
  					values = one ? null : [],
  					max = one ? index + 1 : options.length;
  
  				if ( index < 0 ) {
  					i = max;
  
  				} else {
  					i = one ? index : 0;
  				}
  
  				// Loop through all the selected options
  				for ( ; i < max; i++ ) {
  					option = options[ i ];
  
  					// Support: IE <=9 only
  					// IE8-9 doesn't update selected after form reset (#2551)
  					if ( ( option.selected || i === index ) &&
  
  							// Don't return options that are disabled or in a disabled optgroup
  							!option.disabled &&
  							( !option.parentNode.disabled ||
  								!nodeName( option.parentNode, "optgroup" ) ) ) {
  
  						// Get the specific value for the option
  						value = jQuery( option ).val();
  
  						// We don't need an array for one selects
  						if ( one ) {
  							return value;
  						}
  
  						// Multi-Selects return an array
  						values.push( value );
  					}
  				}
  
  				return values;
  			},
  
  			set: function( elem, value ) {
  				var optionSet, option,
  					options = elem.options,
  					values = jQuery.makeArray( value ),
  					i = options.length;
  
  				while ( i-- ) {
  					option = options[ i ];
  
  					/* eslint-disable no-cond-assign */
  
  					if ( option.selected =
  						jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1
  					) {
  						optionSet = true;
  					}
  
  					/* eslint-enable no-cond-assign */
  				}
  
  				// Force browsers to behave consistently when non-matching value is set
  				if ( !optionSet ) {
  					elem.selectedIndex = -1;
  				}
  				return values;
  			}
  		}
  	}
  } );
  
  // Radios and checkboxes getter/setter
  jQuery.each( [ "radio", "checkbox" ], function() {
  	jQuery.valHooks[ this ] = {
  		set: function( elem, value ) {
  			if ( Array.isArray( value ) ) {
  				return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );
  			}
  		}
  	};
  	if ( !support.checkOn ) {
  		jQuery.valHooks[ this ].get = function( elem ) {
  			return elem.getAttribute( "value" ) === null ? "on" : elem.value;
  		};
  	}
  } );
  
  
  
  
  // Return jQuery for attributes-only inclusion
  
  
  support.focusin = "onfocusin" in window;
  
  
  var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
  	stopPropagationCallback = function( e ) {
  		e.stopPropagation();
  	};
  
  jQuery.extend( jQuery.event, {
  
  	trigger: function( event, data, elem, onlyHandlers ) {
  
  		var i, cur, tmp, bubbleType, ontype, handle, special, lastElement,
  			eventPath = [ elem || document ],
  			type = hasOwn.call( event, "type" ) ? event.type : event,
  			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];
  
  		cur = lastElement = tmp = elem = elem || document;
  
  		// Don't do events on text and comment nodes
  		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
  			return;
  		}
  
  		// focus/blur morphs to focusin/out; ensure we're not firing them right now
  		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
  			return;
  		}
  
  		if ( type.indexOf( "." ) > -1 ) {
  
  			// Namespaced trigger; create a regexp to match event type in handle()
  			namespaces = type.split( "." );
  			type = namespaces.shift();
  			namespaces.sort();
  		}
  		ontype = type.indexOf( ":" ) < 0 && "on" + type;
  
  		// Caller can pass in a jQuery.Event object, Object, or just an event type string
  		event = event[ jQuery.expando ] ?
  			event :
  			new jQuery.Event( type, typeof event === "object" && event );
  
  		// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
  		event.isTrigger = onlyHandlers ? 2 : 3;
  		event.namespace = namespaces.join( "." );
  		event.rnamespace = event.namespace ?
  			new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) :
  			null;
  
  		// Clean up the event in case it is being reused
  		event.result = undefined;
  		if ( !event.target ) {
  			event.target = elem;
  		}
  
  		// Clone any incoming data and prepend the event, creating the handler arg list
  		data = data == null ?
  			[ event ] :
  			jQuery.makeArray( data, [ event ] );
  
  		// Allow special events to draw outside the lines
  		special = jQuery.event.special[ type ] || {};
  		if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
  			return;
  		}
  
  		// Determine event propagation path in advance, per W3C events spec (#9951)
  		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
  		if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) {
  
  			bubbleType = special.delegateType || type;
  			if ( !rfocusMorph.test( bubbleType + type ) ) {
  				cur = cur.parentNode;
  			}
  			for ( ; cur; cur = cur.parentNode ) {
  				eventPath.push( cur );
  				tmp = cur;
  			}
  
  			// Only add window if we got to document (e.g., not plain obj or detached DOM)
  			if ( tmp === ( elem.ownerDocument || document ) ) {
  				eventPath.push( tmp.defaultView || tmp.parentWindow || window );
  			}
  		}
  
  		// Fire handlers on the event path
  		i = 0;
  		while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {
  			lastElement = cur;
  			event.type = i > 1 ?
  				bubbleType :
  				special.bindType || type;
  
  			// jQuery handler
  			handle = (
  					dataPriv.get( cur, "events" ) || Object.create( null )
  				)[ event.type ] &&
  				dataPriv.get( cur, "handle" );
  			if ( handle ) {
  				handle.apply( cur, data );
  			}
  
  			// Native handler
  			handle = ontype && cur[ ontype ];
  			if ( handle && handle.apply && acceptData( cur ) ) {
  				event.result = handle.apply( cur, data );
  				if ( event.result === false ) {
  					event.preventDefault();
  				}
  			}
  		}
  		event.type = type;
  
  		// If nobody prevented the default action, do it now
  		if ( !onlyHandlers && !event.isDefaultPrevented() ) {
  
  			if ( ( !special._default ||
  				special._default.apply( eventPath.pop(), data ) === false ) &&
  				acceptData( elem ) ) {
  
  				// Call a native DOM method on the target with the same name as the event.
  				// Don't do default actions on window, that's where global variables be (#6170)
  				if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) {
  
  					// Don't re-trigger an onFOO event when we call its FOO() method
  					tmp = elem[ ontype ];
  
  					if ( tmp ) {
  						elem[ ontype ] = null;
  					}
  
  					// Prevent re-triggering of the same event, since we already bubbled it above
  					jQuery.event.triggered = type;
  
  					if ( event.isPropagationStopped() ) {
  						lastElement.addEventListener( type, stopPropagationCallback );
  					}
  
  					elem[ type ]();
  
  					if ( event.isPropagationStopped() ) {
  						lastElement.removeEventListener( type, stopPropagationCallback );
  					}
  
  					jQuery.event.triggered = undefined;
  
  					if ( tmp ) {
  						elem[ ontype ] = tmp;
  					}
  				}
  			}
  		}
  
  		return event.result;
  	},
  
  	// Piggyback on a donor event to simulate a different one
  	// Used only for `focus(in | out)` events
  	simulate: function( type, elem, event ) {
  		var e = jQuery.extend(
  			new jQuery.Event(),
  			event,
  			{
  				type: type,
  				isSimulated: true
  			}
  		);
  
  		jQuery.event.trigger( e, null, elem );
  	}
  
  } );
  
  jQuery.fn.extend( {
  
  	trigger: function( type, data ) {
  		return this.each( function() {
  			jQuery.event.trigger( type, data, this );
  		} );
  	},
  	triggerHandler: function( type, data ) {
  		var elem = this[ 0 ];
  		if ( elem ) {
  			return jQuery.event.trigger( type, data, elem, true );
  		}
  	}
  } );
  
  
  // Support: Firefox <=44
  // Firefox doesn't have focus(in | out) events
  // Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
  //
  // Support: Chrome <=48 - 49, Safari <=9.0 - 9.1
  // focus(in | out) events fire after focus & blur events,
  // which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
  // Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857
  if ( !support.focusin ) {
  	jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) {
  
  		// Attach a single capturing handler on the document while someone wants focusin/focusout
  		var handler = function( event ) {
  			jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) );
  		};
  
  		jQuery.event.special[ fix ] = {
  			setup: function() {
  
  				// Handle: regular nodes (via `this.ownerDocument`), window
  				// (via `this.document`) & document (via `this`).
  				var doc = this.ownerDocument || this.document || this,
  					attaches = dataPriv.access( doc, fix );
  
  				if ( !attaches ) {
  					doc.addEventListener( orig, handler, true );
  				}
  				dataPriv.access( doc, fix, ( attaches || 0 ) + 1 );
  			},
  			teardown: function() {
  				var doc = this.ownerDocument || this.document || this,
  					attaches = dataPriv.access( doc, fix ) - 1;
  
  				if ( !attaches ) {
  					doc.removeEventListener( orig, handler, true );
  					dataPriv.remove( doc, fix );
  
  				} else {
  					dataPriv.access( doc, fix, attaches );
  				}
  			}
  		};
  	} );
  }
  var location = window.location;
  
  var nonce = { guid: Date.now() };
  
  var rquery = ( /\?/ );
  
  
  
  // Cross-browser xml parsing
  jQuery.parseXML = function( data ) {
  	var xml;
  	if ( !data || typeof data !== "string" ) {
  		return null;
  	}
  
  	// Support: IE 9 - 11 only
  	// IE throws on parseFromString with invalid input.
  	try {
  		xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" );
  	} catch ( e ) {
  		xml = undefined;
  	}
  
  	if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) {
  		jQuery.error( "Invalid XML: " + data );
  	}
  	return xml;
  };
  
  
  var
  	rbracket = /\[\]$/,
  	rCRLF = /\r?\n/g,
  	rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
  	rsubmittable = /^(?:input|select|textarea|keygen)/i;
  
  function buildParams( prefix, obj, traditional, add ) {
  	var name;
  
  	if ( Array.isArray( obj ) ) {
  
  		// Serialize array item.
  		jQuery.each( obj, function( i, v ) {
  			if ( traditional || rbracket.test( prefix ) ) {
  
  				// Treat each array item as a scalar.
  				add( prefix, v );
  
  			} else {
  
  				// Item is non-scalar (array or object), encode its numeric index.
  				buildParams(
  					prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]",
  					v,
  					traditional,
  					add
  				);
  			}
  		} );
  
  	} else if ( !traditional && toType( obj ) === "object" ) {
  
  		// Serialize object item.
  		for ( name in obj ) {
  			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
  		}
  
  	} else {
  
  		// Serialize scalar item.
  		add( prefix, obj );
  	}
  }
  
  // Serialize an array of form elements or a set of
  // key/values into a query string
  jQuery.param = function( a, traditional ) {
  	var prefix,
  		s = [],
  		add = function( key, valueOrFunction ) {
  
  			// If value is a function, invoke it and use its return value
  			var value = isFunction( valueOrFunction ) ?
  				valueOrFunction() :
  				valueOrFunction;
  
  			s[ s.length ] = encodeURIComponent( key ) + "=" +
  				encodeURIComponent( value == null ? "" : value );
  		};
  
  	if ( a == null ) {
  		return "";
  	}
  
  	// If an array was passed in, assume that it is an array of form elements.
  	if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
  
  		// Serialize the form elements
  		jQuery.each( a, function() {
  			add( this.name, this.value );
  		} );
  
  	} else {
  
  		// If traditional, encode the "old" way (the way 1.3.2 or older
  		// did it), otherwise encode params recursively.
  		for ( prefix in a ) {
  			buildParams( prefix, a[ prefix ], traditional, add );
  		}
  	}
  
  	// Return the resulting serialization
  	return s.join( "&" );
  };
  
  jQuery.fn.extend( {
  	serialize: function() {
  		return jQuery.param( this.serializeArray() );
  	},
  	serializeArray: function() {
  		return this.map( function() {
  
  			// Can add propHook for "elements" to filter or add form elements
  			var elements = jQuery.prop( this, "elements" );
  			return elements ? jQuery.makeArray( elements ) : this;
  		} )
  		.filter( function() {
  			var type = this.type;
  
  			// Use .is( ":disabled" ) so that fieldset[disabled] works
  			return this.name && !jQuery( this ).is( ":disabled" ) &&
  				rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
  				( this.checked || !rcheckableType.test( type ) );
  		} )
  		.map( function( _i, elem ) {
  			var val = jQuery( this ).val();
  
  			if ( val == null ) {
  				return null;
  			}
  
  			if ( Array.isArray( val ) ) {
  				return jQuery.map( val, function( val ) {
  					return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
  				} );
  			}
  
  			return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
  		} ).get();
  	}
  } );
  
  
  var
  	r20 = /%20/g,
  	rhash = /#.*$/,
  	rantiCache = /([?&])_=[^&]*/,
  	rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,
  
  	// #7653, #8125, #8152: local protocol detection
  	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
  	rnoContent = /^(?:GET|HEAD)$/,
  	rprotocol = /^\/\//,
  
  	/* Prefilters
  	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
  	 * 2) These are called:
  	 *    - BEFORE asking for a transport
  	 *    - AFTER param serialization (s.data is a string if s.processData is true)
  	 * 3) key is the dataType
  	 * 4) the catchall symbol "*" can be used
  	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
  	 */
  	prefilters = {},
  
  	/* Transports bindings
  	 * 1) key is the dataType
  	 * 2) the catchall symbol "*" can be used
  	 * 3) selection will start with transport dataType and THEN go to "*" if needed
  	 */
  	transports = {},
  
  	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
  	allTypes = "*/".concat( "*" ),
  
  	// Anchor tag for parsing the document origin
  	originAnchor = document.createElement( "a" );
  	originAnchor.href = location.href;
  
  // Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
  function addToPrefiltersOrTransports( structure ) {
  
  	// dataTypeExpression is optional and defaults to "*"
  	return function( dataTypeExpression, func ) {
  
  		if ( typeof dataTypeExpression !== "string" ) {
  			func = dataTypeExpression;
  			dataTypeExpression = "*";
  		}
  
  		var dataType,
  			i = 0,
  			dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];
  
  		if ( isFunction( func ) ) {
  
  			// For each dataType in the dataTypeExpression
  			while ( ( dataType = dataTypes[ i++ ] ) ) {
  
  				// Prepend if requested
  				if ( dataType[ 0 ] === "+" ) {
  					dataType = dataType.slice( 1 ) || "*";
  					( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );
  
  				// Otherwise append
  				} else {
  					( structure[ dataType ] = structure[ dataType ] || [] ).push( func );
  				}
  			}
  		}
  	};
  }
  
  // Base inspection function for prefilters and transports
  function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {
  
  	var inspected = {},
  		seekingTransport = ( structure === transports );
  
  	function inspect( dataType ) {
  		var selected;
  		inspected[ dataType ] = true;
  		jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
  			var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
  			if ( typeof dataTypeOrTransport === "string" &&
  				!seekingTransport && !inspected[ dataTypeOrTransport ] ) {
  
  				options.dataTypes.unshift( dataTypeOrTransport );
  				inspect( dataTypeOrTransport );
  				return false;
  			} else if ( seekingTransport ) {
  				return !( selected = dataTypeOrTransport );
  			}
  		} );
  		return selected;
  	}
  
  	return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
  }
  
  // A special extend for ajax options
  // that takes "flat" options (not to be deep extended)
  // Fixes #9887
  function ajaxExtend( target, src ) {
  	var key, deep,
  		flatOptions = jQuery.ajaxSettings.flatOptions || {};
  
  	for ( key in src ) {
  		if ( src[ key ] !== undefined ) {
  			( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];
  		}
  	}
  	if ( deep ) {
  		jQuery.extend( true, target, deep );
  	}
  
  	return target;
  }
  
  /* Handles responses to an ajax request:
   * - finds the right dataType (mediates between content-type and expected dataType)
   * - returns the corresponding response
   */
  function ajaxHandleResponses( s, jqXHR, responses ) {
  
  	var ct, type, finalDataType, firstDataType,
  		contents = s.contents,
  		dataTypes = s.dataTypes;
  
  	// Remove auto dataType and get content-type in the process
  	while ( dataTypes[ 0 ] === "*" ) {
  		dataTypes.shift();
  		if ( ct === undefined ) {
  			ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" );
  		}
  	}
  
  	// Check if we're dealing with a known content-type
  	if ( ct ) {
  		for ( type in contents ) {
  			if ( contents[ type ] && contents[ type ].test( ct ) ) {
  				dataTypes.unshift( type );
  				break;
  			}
  		}
  	}
  
  	// Check to see if we have a response for the expected dataType
  	if ( dataTypes[ 0 ] in responses ) {
  		finalDataType = dataTypes[ 0 ];
  	} else {
  
  		// Try convertible dataTypes
  		for ( type in responses ) {
  			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) {
  				finalDataType = type;
  				break;
  			}
  			if ( !firstDataType ) {
  				firstDataType = type;
  			}
  		}
  
  		// Or just use first one
  		finalDataType = finalDataType || firstDataType;
  	}
  
  	// If we found a dataType
  	// We add the dataType to the list if needed
  	// and return the corresponding response
  	if ( finalDataType ) {
  		if ( finalDataType !== dataTypes[ 0 ] ) {
  			dataTypes.unshift( finalDataType );
  		}
  		return responses[ finalDataType ];
  	}
  }
  
  /* Chain conversions given the request and the original response
   * Also sets the responseXXX fields on the jqXHR instance
   */
  function ajaxConvert( s, response, jqXHR, isSuccess ) {
  	var conv2, current, conv, tmp, prev,
  		converters = {},
  
  		// Work with a copy of dataTypes in case we need to modify it for conversion
  		dataTypes = s.dataTypes.slice();
  
  	// Create converters map with lowercased keys
  	if ( dataTypes[ 1 ] ) {
  		for ( conv in s.converters ) {
  			converters[ conv.toLowerCase() ] = s.converters[ conv ];
  		}
  	}
  
  	current = dataTypes.shift();
  
  	// Convert to each sequential dataType
  	while ( current ) {
  
  		if ( s.responseFields[ current ] ) {
  			jqXHR[ s.responseFields[ current ] ] = response;
  		}
  
  		// Apply the dataFilter if provided
  		if ( !prev && isSuccess && s.dataFilter ) {
  			response = s.dataFilter( response, s.dataType );
  		}
  
  		prev = current;
  		current = dataTypes.shift();
  
  		if ( current ) {
  
  			// There's only work to do if current dataType is non-auto
  			if ( current === "*" ) {
  
  				current = prev;
  
  			// Convert response if prev dataType is non-auto and differs from current
  			} else if ( prev !== "*" && prev !== current ) {
  
  				// Seek a direct converter
  				conv = converters[ prev + " " + current ] || converters[ "* " + current ];
  
  				// If none found, seek a pair
  				if ( !conv ) {
  					for ( conv2 in converters ) {
  
  						// If conv2 outputs current
  						tmp = conv2.split( " " );
  						if ( tmp[ 1 ] === current ) {
  
  							// If prev can be converted to accepted input
  							conv = converters[ prev + " " + tmp[ 0 ] ] ||
  								converters[ "* " + tmp[ 0 ] ];
  							if ( conv ) {
  
  								// Condense equivalence converters
  								if ( conv === true ) {
  									conv = converters[ conv2 ];
  
  								// Otherwise, insert the intermediate dataType
  								} else if ( converters[ conv2 ] !== true ) {
  									current = tmp[ 0 ];
  									dataTypes.unshift( tmp[ 1 ] );
  								}
  								break;
  							}
  						}
  					}
  				}
  
  				// Apply converter (if not an equivalence)
  				if ( conv !== true ) {
  
  					// Unless errors are allowed to bubble, catch and return them
  					if ( conv && s.throws ) {
  						response = conv( response );
  					} else {
  						try {
  							response = conv( response );
  						} catch ( e ) {
  							return {
  								state: "parsererror",
  								error: conv ? e : "No conversion from " + prev + " to " + current
  							};
  						}
  					}
  				}
  			}
  		}
  	}
  
  	return { state: "success", data: response };
  }
  
  jQuery.extend( {
  
  	// Counter for holding the number of active queries
  	active: 0,
  
  	// Last-Modified header cache for next request
  	lastModified: {},
  	etag: {},
  
  	ajaxSettings: {
  		url: location.href,
  		type: "GET",
  		isLocal: rlocalProtocol.test( location.protocol ),
  		global: true,
  		processData: true,
  		async: true,
  		contentType: "application/x-www-form-urlencoded; charset=UTF-8",
  
  		/*
  		timeout: 0,
  		data: null,
  		dataType: null,
  		username: null,
  		password: null,
  		cache: null,
  		throws: false,
  		traditional: false,
  		headers: {},
  		*/
  
  		accepts: {
  			"*": allTypes,
  			text: "text/plain",
  			html: "text/html",
  			xml: "application/xml, text/xml",
  			json: "application/json, text/javascript"
  		},
  
  		contents: {
  			xml: /\bxml\b/,
  			html: /\bhtml/,
  			json: /\bjson\b/
  		},
  
  		responseFields: {
  			xml: "responseXML",
  			text: "responseText",
  			json: "responseJSON"
  		},
  
  		// Data converters
  		// Keys separate source (or catchall "*") and destination types with a single space
  		converters: {
  
  			// Convert anything to text
  			"* text": String,
  
  			// Text to html (true = no transformation)
  			"text html": true,
  
  			// Evaluate text as a json expression
  			"text json": JSON.parse,
  
  			// Parse text as xml
  			"text xml": jQuery.parseXML
  		},
  
  		// For options that shouldn't be deep extended:
  		// you can add your own custom options here if
  		// and when you create one that shouldn't be
  		// deep extended (see ajaxExtend)
  		flatOptions: {
  			url: true,
  			context: true
  		}
  	},
  
  	// Creates a full fledged settings object into target
  	// with both ajaxSettings and settings fields.
  	// If target is omitted, writes into ajaxSettings.
  	ajaxSetup: function( target, settings ) {
  		return settings ?
  
  			// Building a settings object
  			ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :
  
  			// Extending ajaxSettings
  			ajaxExtend( jQuery.ajaxSettings, target );
  	},
  
  	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
  	ajaxTransport: addToPrefiltersOrTransports( transports ),
  
  	// Main method
  	ajax: function( url, options ) {
  
  		// If url is an object, simulate pre-1.5 signature
  		if ( typeof url === "object" ) {
  			options = url;
  			url = undefined;
  		}
  
  		// Force options to be an object
  		options = options || {};
  
  		var transport,
  
  			// URL without anti-cache param
  			cacheURL,
  
  			// Response headers
  			responseHeadersString,
  			responseHeaders,
  
  			// timeout handle
  			timeoutTimer,
  
  			// Url cleanup var
  			urlAnchor,
  
  			// Request state (becomes false upon send and true upon completion)
  			completed,
  
  			// To know if global events are to be dispatched
  			fireGlobals,
  
  			// Loop variable
  			i,
  
  			// uncached part of the url
  			uncached,
  
  			// Create the final options object
  			s = jQuery.ajaxSetup( {}, options ),
  
  			// Callbacks context
  			callbackContext = s.context || s,
  
  			// Context for global events is callbackContext if it is a DOM node or jQuery collection
  			globalEventContext = s.context &&
  				( callbackContext.nodeType || callbackContext.jquery ) ?
  					jQuery( callbackContext ) :
  					jQuery.event,
  
  			// Deferreds
  			deferred = jQuery.Deferred(),
  			completeDeferred = jQuery.Callbacks( "once memory" ),
  
  			// Status-dependent callbacks
  			statusCode = s.statusCode || {},
  
  			// Headers (they are sent all at once)
  			requestHeaders = {},
  			requestHeadersNames = {},
  
  			// Default abort message
  			strAbort = "canceled",
  
  			// Fake xhr
  			jqXHR = {
  				readyState: 0,
  
  				// Builds headers hashtable if needed
  				getResponseHeader: function( key ) {
  					var match;
  					if ( completed ) {
  						if ( !responseHeaders ) {
  							responseHeaders = {};
  							while ( ( match = rheaders.exec( responseHeadersString ) ) ) {
  								responseHeaders[ match[ 1 ].toLowerCase() + " " ] =
  									( responseHeaders[ match[ 1 ].toLowerCase() + " " ] || [] )
  										.concat( match[ 2 ] );
  							}
  						}
  						match = responseHeaders[ key.toLowerCase() + " " ];
  					}
  					return match == null ? null : match.join( ", " );
  				},
  
  				// Raw string
  				getAllResponseHeaders: function() {
  					return completed ? responseHeadersString : null;
  				},
  
  				// Caches the header
  				setRequestHeader: function( name, value ) {
  					if ( completed == null ) {
  						name = requestHeadersNames[ name.toLowerCase() ] =
  							requestHeadersNames[ name.toLowerCase() ] || name;
  						requestHeaders[ name ] = value;
  					}
  					return this;
  				},
  
  				// Overrides response content-type header
  				overrideMimeType: function( type ) {
  					if ( completed == null ) {
  						s.mimeType = type;
  					}
  					return this;
  				},
  
  				// Status-dependent callbacks
  				statusCode: function( map ) {
  					var code;
  					if ( map ) {
  						if ( completed ) {
  
  							// Execute the appropriate callbacks
  							jqXHR.always( map[ jqXHR.status ] );
  						} else {
  
  							// Lazy-add the new callbacks in a way that preserves old ones
  							for ( code in map ) {
  								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
  							}
  						}
  					}
  					return this;
  				},
  
  				// Cancel the request
  				abort: function( statusText ) {
  					var finalText = statusText || strAbort;
  					if ( transport ) {
  						transport.abort( finalText );
  					}
  					done( 0, finalText );
  					return this;
  				}
  			};
  
  		// Attach deferreds
  		deferred.promise( jqXHR );
  
  		// Add protocol if not provided (prefilters might expect it)
  		// Handle falsy url in the settings object (#10093: consistency with old signature)
  		// We also use the url parameter if available
  		s.url = ( ( url || s.url || location.href ) + "" )
  			.replace( rprotocol, location.protocol + "//" );
  
  		// Alias method option to type as per ticket #12004
  		s.type = options.method || options.type || s.method || s.type;
  
  		// Extract dataTypes list
  		s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ];
  
  		// A cross-domain request is in order when the origin doesn't match the current origin.
  		if ( s.crossDomain == null ) {
  			urlAnchor = document.createElement( "a" );
  
  			// Support: IE <=8 - 11, Edge 12 - 15
  			// IE throws exception on accessing the href property if url is malformed,
  			// e.g. http://example.com:80x/
  			try {
  				urlAnchor.href = s.url;
  
  				// Support: IE <=8 - 11 only
  				// Anchor's host property isn't correctly set when s.url is relative
  				urlAnchor.href = urlAnchor.href;
  				s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !==
  					urlAnchor.protocol + "//" + urlAnchor.host;
  			} catch ( e ) {
  
  				// If there is an error parsing the URL, assume it is crossDomain,
  				// it can be rejected by the transport if it is invalid
  				s.crossDomain = true;
  			}
  		}
  
  		// Convert data if not already a string
  		if ( s.data && s.processData && typeof s.data !== "string" ) {
  			s.data = jQuery.param( s.data, s.traditional );
  		}
  
  		// Apply prefilters
  		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );
  
  		// If request was aborted inside a prefilter, stop there
  		if ( completed ) {
  			return jqXHR;
  		}
  
  		// We can fire global events as of now if asked to
  		// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118)
  		fireGlobals = jQuery.event && s.global;
  
  		// Watch for a new set of requests
  		if ( fireGlobals && jQuery.active++ === 0 ) {
  			jQuery.event.trigger( "ajaxStart" );
  		}
  
  		// Uppercase the type
  		s.type = s.type.toUpperCase();
  
  		// Determine if request has content
  		s.hasContent = !rnoContent.test( s.type );
  
  		// Save the URL in case we're toying with the If-Modified-Since
  		// and/or If-None-Match header later on
  		// Remove hash to simplify url manipulation
  		cacheURL = s.url.replace( rhash, "" );
  
  		// More options handling for requests with no content
  		if ( !s.hasContent ) {
  
  			// Remember the hash so we can put it back
  			uncached = s.url.slice( cacheURL.length );
  
  			// If data is available and should be processed, append data to url
  			if ( s.data && ( s.processData || typeof s.data === "string" ) ) {
  				cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data;
  
  				// #9682: remove data so that it's not used in an eventual retry
  				delete s.data;
  			}
  
  			// Add or update anti-cache param if needed
  			if ( s.cache === false ) {
  				cacheURL = cacheURL.replace( rantiCache, "$1" );
  				uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce.guid++ ) +
  					uncached;
  			}
  
  			// Put hash and anti-cache on the URL that will be requested (gh-1732)
  			s.url = cacheURL + uncached;
  
  		// Change '%20' to '+' if this is encoded form body content (gh-2658)
  		} else if ( s.data && s.processData &&
  			( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) {
  			s.data = s.data.replace( r20, "+" );
  		}
  
  		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
  		if ( s.ifModified ) {
  			if ( jQuery.lastModified[ cacheURL ] ) {
  				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
  			}
  			if ( jQuery.etag[ cacheURL ] ) {
  				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
  			}
  		}
  
  		// Set the correct header, if data is being sent
  		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
  			jqXHR.setRequestHeader( "Content-Type", s.contentType );
  		}
  
  		// Set the Accepts header for the server, depending on the dataType
  		jqXHR.setRequestHeader(
  			"Accept",
  			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?
  				s.accepts[ s.dataTypes[ 0 ] ] +
  					( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
  				s.accepts[ "*" ]
  		);
  
  		// Check for headers option
  		for ( i in s.headers ) {
  			jqXHR.setRequestHeader( i, s.headers[ i ] );
  		}
  
  		// Allow custom headers/mimetypes and early abort
  		if ( s.beforeSend &&
  			( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {
  
  			// Abort if not done already and return
  			return jqXHR.abort();
  		}
  
  		// Aborting is no longer a cancellation
  		strAbort = "abort";
  
  		// Install callbacks on deferreds
  		completeDeferred.add( s.complete );
  		jqXHR.done( s.success );
  		jqXHR.fail( s.error );
  
  		// Get transport
  		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );
  
  		// If no transport, we auto-abort
  		if ( !transport ) {
  			done( -1, "No Transport" );
  		} else {
  			jqXHR.readyState = 1;
  
  			// Send global event
  			if ( fireGlobals ) {
  				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
  			}
  
  			// If request was aborted inside ajaxSend, stop there
  			if ( completed ) {
  				return jqXHR;
  			}
  
  			// Timeout
  			if ( s.async && s.timeout > 0 ) {
  				timeoutTimer = window.setTimeout( function() {
  					jqXHR.abort( "timeout" );
  				}, s.timeout );
  			}
  
  			try {
  				completed = false;
  				transport.send( requestHeaders, done );
  			} catch ( e ) {
  
  				// Rethrow post-completion exceptions
  				if ( completed ) {
  					throw e;
  				}
  
  				// Propagate others as results
  				done( -1, e );
  			}
  		}
  
  		// Callback for when everything is done
  		function done( status, nativeStatusText, responses, headers ) {
  			var isSuccess, success, error, response, modified,
  				statusText = nativeStatusText;
  
  			// Ignore repeat invocations
  			if ( completed ) {
  				return;
  			}
  
  			completed = true;
  
  			// Clear timeout if it exists
  			if ( timeoutTimer ) {
  				window.clearTimeout( timeoutTimer );
  			}
  
  			// Dereference transport for early garbage collection
  			// (no matter how long the jqXHR object will be used)
  			transport = undefined;
  
  			// Cache response headers
  			responseHeadersString = headers || "";
  
  			// Set readyState
  			jqXHR.readyState = status > 0 ? 4 : 0;
  
  			// Determine if successful
  			isSuccess = status >= 200 && status < 300 || status === 304;
  
  			// Get response data
  			if ( responses ) {
  				response = ajaxHandleResponses( s, jqXHR, responses );
  			}
  
  			// Use a noop converter for missing script
  			if ( !isSuccess && jQuery.inArray( "script", s.dataTypes ) > -1 ) {
  				s.converters[ "text script" ] = function() {};
  			}
  
  			// Convert no matter what (that way responseXXX fields are always set)
  			response = ajaxConvert( s, response, jqXHR, isSuccess );
  
  			// If successful, handle type chaining
  			if ( isSuccess ) {
  
  				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
  				if ( s.ifModified ) {
  					modified = jqXHR.getResponseHeader( "Last-Modified" );
  					if ( modified ) {
  						jQuery.lastModified[ cacheURL ] = modified;
  					}
  					modified = jqXHR.getResponseHeader( "etag" );
  					if ( modified ) {
  						jQuery.etag[ cacheURL ] = modified;
  					}
  				}
  
  				// if no content
  				if ( status === 204 || s.type === "HEAD" ) {
  					statusText = "nocontent";
  
  				// if not modified
  				} else if ( status === 304 ) {
  					statusText = "notmodified";
  
  				// If we have data, let's convert it
  				} else {
  					statusText = response.state;
  					success = response.data;
  					error = response.error;
  					isSuccess = !error;
  				}
  			} else {
  
  				// Extract error from statusText and normalize for non-aborts
  				error = statusText;
  				if ( status || !statusText ) {
  					statusText = "error";
  					if ( status < 0 ) {
  						status = 0;
  					}
  				}
  			}
  
  			// Set data for the fake xhr object
  			jqXHR.status = status;
  			jqXHR.statusText = ( nativeStatusText || statusText ) + "";
  
  			// Success/Error
  			if ( isSuccess ) {
  				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
  			} else {
  				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
  			}
  
  			// Status-dependent callbacks
  			jqXHR.statusCode( statusCode );
  			statusCode = undefined;
  
  			if ( fireGlobals ) {
  				globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
  					[ jqXHR, s, isSuccess ? success : error ] );
  			}
  
  			// Complete
  			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );
  
  			if ( fireGlobals ) {
  				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );
  
  				// Handle the global AJAX counter
  				if ( !( --jQuery.active ) ) {
  					jQuery.event.trigger( "ajaxStop" );
  				}
  			}
  		}
  
  		return jqXHR;
  	},
  
  	getJSON: function( url, data, callback ) {
  		return jQuery.get( url, data, callback, "json" );
  	},
  
  	getScript: function( url, callback ) {
  		return jQuery.get( url, undefined, callback, "script" );
  	}
  } );
  
  jQuery.each( [ "get", "post" ], function( _i, method ) {
  	jQuery[ method ] = function( url, data, callback, type ) {
  
  		// Shift arguments if data argument was omitted
  		if ( isFunction( data ) ) {
  			type = type || callback;
  			callback = data;
  			data = undefined;
  		}
  
  		// The url can be an options object (which then must have .url)
  		return jQuery.ajax( jQuery.extend( {
  			url: url,
  			type: method,
  			dataType: type,
  			data: data,
  			success: callback
  		}, jQuery.isPlainObject( url ) && url ) );
  	};
  } );
  
  jQuery.ajaxPrefilter( function( s ) {
  	var i;
  	for ( i in s.headers ) {
  		if ( i.toLowerCase() === "content-type" ) {
  			s.contentType = s.headers[ i ] || "";
  		}
  	}
  } );
  
  
  jQuery._evalUrl = function( url, options, doc ) {
  	return jQuery.ajax( {
  		url: url,
  
  		// Make this explicit, since user can override this through ajaxSetup (#11264)
  		type: "GET",
  		dataType: "script",
  		cache: true,
  		async: false,
  		global: false,
  
  		// Only evaluate the response if it is successful (gh-4126)
  		// dataFilter is not invoked for failure responses, so using it instead
  		// of the default converter is kludgy but it works.
  		converters: {
  			"text script": function() {}
  		},
  		dataFilter: function( response ) {
  			jQuery.globalEval( response, options, doc );
  		}
  	} );
  };
  
  
  jQuery.fn.extend( {
  	wrapAll: function( html ) {
  		var wrap;
  
  		if ( this[ 0 ] ) {
  			if ( isFunction( html ) ) {
  				html = html.call( this[ 0 ] );
  			}
  
  			// The elements to wrap the target around
  			wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );
  
  			if ( this[ 0 ].parentNode ) {
  				wrap.insertBefore( this[ 0 ] );
  			}
  
  			wrap.map( function() {
  				var elem = this;
  
  				while ( elem.firstElementChild ) {
  					elem = elem.firstElementChild;
  				}
  
  				return elem;
  			} ).append( this );
  		}
  
  		return this;
  	},
  
  	wrapInner: function( html ) {
  		if ( isFunction( html ) ) {
  			return this.each( function( i ) {
  				jQuery( this ).wrapInner( html.call( this, i ) );
  			} );
  		}
  
  		return this.each( function() {
  			var self = jQuery( this ),
  				contents = self.contents();
  
  			if ( contents.length ) {
  				contents.wrapAll( html );
  
  			} else {
  				self.append( html );
  			}
  		} );
  	},
  
  	wrap: function( html ) {
  		var htmlIsFunction = isFunction( html );
  
  		return this.each( function( i ) {
  			jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html );
  		} );
  	},
  
  	unwrap: function( selector ) {
  		this.parent( selector ).not( "body" ).each( function() {
  			jQuery( this ).replaceWith( this.childNodes );
  		} );
  		return this;
  	}
  } );
  
  
  jQuery.expr.pseudos.hidden = function( elem ) {
  	return !jQuery.expr.pseudos.visible( elem );
  };
  jQuery.expr.pseudos.visible = function( elem ) {
  	return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );
  };
  
  
  
  
  jQuery.ajaxSettings.xhr = function() {
  	try {
  		return new window.XMLHttpRequest();
  	} catch ( e ) {}
  };
  
  var xhrSuccessStatus = {
  
  		// File protocol always yields status code 0, assume 200
  		0: 200,
  
  		// Support: IE <=9 only
  		// #1450: sometimes IE returns 1223 when it should be 204
  		1223: 204
  	},
  	xhrSupported = jQuery.ajaxSettings.xhr();
  
  support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
  support.ajax = xhrSupported = !!xhrSupported;
  
  jQuery.ajaxTransport( function( options ) {
  	var callback, errorCallback;
  
  	// Cross domain only allowed if supported through XMLHttpRequest
  	if ( support.cors || xhrSupported && !options.crossDomain ) {
  		return {
  			send: function( headers, complete ) {
  				var i,
  					xhr = options.xhr();
  
  				xhr.open(
  					options.type,
  					options.url,
  					options.async,
  					options.username,
  					options.password
  				);
  
  				// Apply custom fields if provided
  				if ( options.xhrFields ) {
  					for ( i in options.xhrFields ) {
  						xhr[ i ] = options.xhrFields[ i ];
  					}
  				}
  
  				// Override mime type if needed
  				if ( options.mimeType && xhr.overrideMimeType ) {
  					xhr.overrideMimeType( options.mimeType );
  				}
  
  				// X-Requested-With header
  				// For cross-domain requests, seeing as conditions for a preflight are
  				// akin to a jigsaw puzzle, we simply never set it to be sure.
  				// (it can always be set on a per-request basis or even using ajaxSetup)
  				// For same-domain requests, won't change header if already provided.
  				if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
  					headers[ "X-Requested-With" ] = "XMLHttpRequest";
  				}
  
  				// Set headers
  				for ( i in headers ) {
  					xhr.setRequestHeader( i, headers[ i ] );
  				}
  
  				// Callback
  				callback = function( type ) {
  					return function() {
  						if ( callback ) {
  							callback = errorCallback = xhr.onload =
  								xhr.onerror = xhr.onabort = xhr.ontimeout =
  									xhr.onreadystatechange = null;
  
  							if ( type === "abort" ) {
  								xhr.abort();
  							} else if ( type === "error" ) {
  
  								// Support: IE <=9 only
  								// On a manual native abort, IE9 throws
  								// errors on any property access that is not readyState
  								if ( typeof xhr.status !== "number" ) {
  									complete( 0, "error" );
  								} else {
  									complete(
  
  										// File: protocol always yields status 0; see #8605, #14207
  										xhr.status,
  										xhr.statusText
  									);
  								}
  							} else {
  								complete(
  									xhrSuccessStatus[ xhr.status ] || xhr.status,
  									xhr.statusText,
  
  									// Support: IE <=9 only
  									// IE9 has no XHR2 but throws on binary (trac-11426)
  									// For XHR2 non-text, let the caller handle it (gh-2498)
  									( xhr.responseType || "text" ) !== "text"  ||
  									typeof xhr.responseText !== "string" ?
  										{ binary: xhr.response } :
  										{ text: xhr.responseText },
  									xhr.getAllResponseHeaders()
  								);
  							}
  						}
  					};
  				};
  
  				// Listen to events
  				xhr.onload = callback();
  				errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" );
  
  				// Support: IE 9 only
  				// Use onreadystatechange to replace onabort
  				// to handle uncaught aborts
  				if ( xhr.onabort !== undefined ) {
  					xhr.onabort = errorCallback;
  				} else {
  					xhr.onreadystatechange = function() {
  
  						// Check readyState before timeout as it changes
  						if ( xhr.readyState === 4 ) {
  
  							// Allow onerror to be called first,
  							// but that will not handle a native abort
  							// Also, save errorCallback to a variable
  							// as xhr.onerror cannot be accessed
  							window.setTimeout( function() {
  								if ( callback ) {
  									errorCallback();
  								}
  							} );
  						}
  					};
  				}
  
  				// Create the abort callback
  				callback = callback( "abort" );
  
  				try {
  
  					// Do send the request (this may raise an exception)
  					xhr.send( options.hasContent && options.data || null );
  				} catch ( e ) {
  
  					// #14683: Only rethrow if this hasn't been notified as an error yet
  					if ( callback ) {
  						throw e;
  					}
  				}
  			},
  
  			abort: function() {
  				if ( callback ) {
  					callback();
  				}
  			}
  		};
  	}
  } );
  
  
  
  
  // Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)
  jQuery.ajaxPrefilter( function( s ) {
  	if ( s.crossDomain ) {
  		s.contents.script = false;
  	}
  } );
  
  // Install script dataType
  jQuery.ajaxSetup( {
  	accepts: {
  		script: "text/javascript, application/javascript, " +
  			"application/ecmascript, application/x-ecmascript"
  	},
  	contents: {
  		script: /\b(?:java|ecma)script\b/
  	},
  	converters: {
  		"text script": function( text ) {
  			jQuery.globalEval( text );
  			return text;
  		}
  	}
  } );
  
  // Handle cache's special case and crossDomain
  jQuery.ajaxPrefilter( "script", function( s ) {
  	if ( s.cache === undefined ) {
  		s.cache = false;
  	}
  	if ( s.crossDomain ) {
  		s.type = "GET";
  	}
  } );
  
  // Bind script tag hack transport
  jQuery.ajaxTransport( "script", function( s ) {
  
  	// This transport only deals with cross domain or forced-by-attrs requests
  	if ( s.crossDomain || s.scriptAttrs ) {
  		var script, callback;
  		return {
  			send: function( _, complete ) {
  				script = jQuery( "<script>" )
  					.attr( s.scriptAttrs || {} )
  					.prop( { charset: s.scriptCharset, src: s.url } )
  					.on( "load error", callback = function( evt ) {
  						script.remove();
  						callback = null;
  						if ( evt ) {
  							complete( evt.type === "error" ? 404 : 200, evt.type );
  						}
  					} );
  
  				// Use native DOM manipulation to avoid our domManip AJAX trickery
  				document.head.appendChild( script[ 0 ] );
  			},
  			abort: function() {
  				if ( callback ) {
  					callback();
  				}
  			}
  		};
  	}
  } );
  
  
  
  
  var oldCallbacks = [],
  	rjsonp = /(=)\?(?=&|$)|\?\?/;
  
  // Default jsonp settings
  jQuery.ajaxSetup( {
  	jsonp: "callback",
  	jsonpCallback: function() {
  		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce.guid++ ) );
  		this[ callback ] = true;
  		return callback;
  	}
  } );
  
  // Detect, normalize options and install callbacks for jsonp requests
  jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
  
  	var callbackName, overwritten, responseContainer,
  		jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
  			"url" :
  			typeof s.data === "string" &&
  				( s.contentType || "" )
  					.indexOf( "application/x-www-form-urlencoded" ) === 0 &&
  				rjsonp.test( s.data ) && "data"
  		);
  
  	// Handle iff the expected data type is "jsonp" or we have a parameter to set
  	if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {
  
  		// Get callback name, remembering preexisting value associated with it
  		callbackName = s.jsonpCallback = isFunction( s.jsonpCallback ) ?
  			s.jsonpCallback() :
  			s.jsonpCallback;
  
  		// Insert callback into url or form data
  		if ( jsonProp ) {
  			s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
  		} else if ( s.jsonp !== false ) {
  			s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
  		}
  
  		// Use data converter to retrieve json after script execution
  		s.converters[ "script json" ] = function() {
  			if ( !responseContainer ) {
  				jQuery.error( callbackName + " was not called" );
  			}
  			return responseContainer[ 0 ];
  		};
  
  		// Force json dataType
  		s.dataTypes[ 0 ] = "json";
  
  		// Install callback
  		overwritten = window[ callbackName ];
  		window[ callbackName ] = function() {
  			responseContainer = arguments;
  		};
  
  		// Clean-up function (fires after converters)
  		jqXHR.always( function() {
  
  			// If previous value didn't exist - remove it
  			if ( overwritten === undefined ) {
  				jQuery( window ).removeProp( callbackName );
  
  			// Otherwise restore preexisting value
  			} else {
  				window[ callbackName ] = overwritten;
  			}
  
  			// Save back as free
  			if ( s[ callbackName ] ) {
  
  				// Make sure that re-using the options doesn't screw things around
  				s.jsonpCallback = originalSettings.jsonpCallback;
  
  				// Save the callback name for future use
  				oldCallbacks.push( callbackName );
  			}
  
  			// Call if it was a function and we have a response
  			if ( responseContainer && isFunction( overwritten ) ) {
  				overwritten( responseContainer[ 0 ] );
  			}
  
  			responseContainer = overwritten = undefined;
  		} );
  
  		// Delegate to script
  		return "script";
  	}
  } );
  
  
  
  
  // Support: Safari 8 only
  // In Safari 8 documents created via document.implementation.createHTMLDocument
  // collapse sibling forms: the second one becomes a child of the first one.
  // Because of that, this security measure has to be disabled in Safari 8.
  // https://bugs.webkit.org/show_bug.cgi?id=137337
  support.createHTMLDocument = ( function() {
  	var body = document.implementation.createHTMLDocument( "" ).body;
  	body.innerHTML = "<form></form><form></form>";
  	return body.childNodes.length === 2;
  } )();
  
  
  // Argument "data" should be string of html
  // context (optional): If specified, the fragment will be created in this context,
  // defaults to document
  // keepScripts (optional): If true, will include scripts passed in the html string
  jQuery.parseHTML = function( data, context, keepScripts ) {
  	if ( typeof data !== "string" ) {
  		return [];
  	}
  	if ( typeof context === "boolean" ) {
  		keepScripts = context;
  		context = false;
  	}
  
  	var base, parsed, scripts;
  
  	if ( !context ) {
  
  		// Stop scripts or inline event handlers from being executed immediately
  		// by using document.implementation
  		if ( support.createHTMLDocument ) {
  			context = document.implementation.createHTMLDocument( "" );
  
  			// Set the base href for the created document
  			// so any parsed elements with URLs
  			// are based on the document's URL (gh-2965)
  			base = context.createElement( "base" );
  			base.href = document.location.href;
  			context.head.appendChild( base );
  		} else {
  			context = document;
  		}
  	}
  
  	parsed = rsingleTag.exec( data );
  	scripts = !keepScripts && [];
  
  	// Single tag
  	if ( parsed ) {
  		return [ context.createElement( parsed[ 1 ] ) ];
  	}
  
  	parsed = buildFragment( [ data ], context, scripts );
  
  	if ( scripts && scripts.length ) {
  		jQuery( scripts ).remove();
  	}
  
  	return jQuery.merge( [], parsed.childNodes );
  };
  
  
  /**
   * Load a url into a page
   */
  jQuery.fn.load = function( url, params, callback ) {
  	var selector, type, response,
  		self = this,
  		off = url.indexOf( " " );
  
  	if ( off > -1 ) {
  		selector = stripAndCollapse( url.slice( off ) );
  		url = url.slice( 0, off );
  	}
  
  	// If it's a function
  	if ( isFunction( params ) ) {
  
  		// We assume that it's the callback
  		callback = params;
  		params = undefined;
  
  	// Otherwise, build a param string
  	} else if ( params && typeof params === "object" ) {
  		type = "POST";
  	}
  
  	// If we have elements to modify, make the request
  	if ( self.length > 0 ) {
  		jQuery.ajax( {
  			url: url,
  
  			// If "type" variable is undefined, then "GET" method will be used.
  			// Make value of this field explicit since
  			// user can override it through ajaxSetup method
  			type: type || "GET",
  			dataType: "html",
  			data: params
  		} ).done( function( responseText ) {
  
  			// Save response for use in complete callback
  			response = arguments;
  
  			self.html( selector ?
  
  				// If a selector was specified, locate the right elements in a dummy div
  				// Exclude scripts to avoid IE 'Permission Denied' errors
  				jQuery( "<div>" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :
  
  				// Otherwise use the full result
  				responseText );
  
  		// If the request succeeds, this function gets "data", "status", "jqXHR"
  		// but they are ignored because response was set above.
  		// If it fails, this function gets "jqXHR", "status", "error"
  		} ).always( callback && function( jqXHR, status ) {
  			self.each( function() {
  				callback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );
  			} );
  		} );
  	}
  
  	return this;
  };
  
  
  
  
  jQuery.expr.pseudos.animated = function( elem ) {
  	return jQuery.grep( jQuery.timers, function( fn ) {
  		return elem === fn.elem;
  	} ).length;
  };
  
  
  
  
  jQuery.offset = {
  	setOffset: function( elem, options, i ) {
  		var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
  			position = jQuery.css( elem, "position" ),
  			curElem = jQuery( elem ),
  			props = {};
  
  		// Set position first, in-case top/left are set even on static elem
  		if ( position === "static" ) {
  			elem.style.position = "relative";
  		}
  
  		curOffset = curElem.offset();
  		curCSSTop = jQuery.css( elem, "top" );
  		curCSSLeft = jQuery.css( elem, "left" );
  		calculatePosition = ( position === "absolute" || position === "fixed" ) &&
  			( curCSSTop + curCSSLeft ).indexOf( "auto" ) > -1;
  
  		// Need to be able to calculate position if either
  		// top or left is auto and position is either absolute or fixed
  		if ( calculatePosition ) {
  			curPosition = curElem.position();
  			curTop = curPosition.top;
  			curLeft = curPosition.left;
  
  		} else {
  			curTop = parseFloat( curCSSTop ) || 0;
  			curLeft = parseFloat( curCSSLeft ) || 0;
  		}
  
  		if ( isFunction( options ) ) {
  
  			// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
  			options = options.call( elem, i, jQuery.extend( {}, curOffset ) );
  		}
  
  		if ( options.top != null ) {
  			props.top = ( options.top - curOffset.top ) + curTop;
  		}
  		if ( options.left != null ) {
  			props.left = ( options.left - curOffset.left ) + curLeft;
  		}
  
  		if ( "using" in options ) {
  			options.using.call( elem, props );
  
  		} else {
  			if ( typeof props.top === "number" ) {
  				props.top += "px";
  			}
  			if ( typeof props.left === "number" ) {
  				props.left += "px";
  			}
  			curElem.css( props );
  		}
  	}
  };
  
  jQuery.fn.extend( {
  
  	// offset() relates an element's border box to the document origin
  	offset: function( options ) {
  
  		// Preserve chaining for setter
  		if ( arguments.length ) {
  			return options === undefined ?
  				this :
  				this.each( function( i ) {
  					jQuery.offset.setOffset( this, options, i );
  				} );
  		}
  
  		var rect, win,
  			elem = this[ 0 ];
  
  		if ( !elem ) {
  			return;
  		}
  
  		// Return zeros for disconnected and hidden (display: none) elements (gh-2310)
  		// Support: IE <=11 only
  		// Running getBoundingClientRect on a
  		// disconnected node in IE throws an error
  		if ( !elem.getClientRects().length ) {
  			return { top: 0, left: 0 };
  		}
  
  		// Get document-relative position by adding viewport scroll to viewport-relative gBCR
  		rect = elem.getBoundingClientRect();
  		win = elem.ownerDocument.defaultView;
  		return {
  			top: rect.top + win.pageYOffset,
  			left: rect.left + win.pageXOffset
  		};
  	},
  
  	// position() relates an element's margin box to its offset parent's padding box
  	// This corresponds to the behavior of CSS absolute positioning
  	position: function() {
  		if ( !this[ 0 ] ) {
  			return;
  		}
  
  		var offsetParent, offset, doc,
  			elem = this[ 0 ],
  			parentOffset = { top: 0, left: 0 };
  
  		// position:fixed elements are offset from the viewport, which itself always has zero offset
  		if ( jQuery.css( elem, "position" ) === "fixed" ) {
  
  			// Assume position:fixed implies availability of getBoundingClientRect
  			offset = elem.getBoundingClientRect();
  
  		} else {
  			offset = this.offset();
  
  			// Account for the *real* offset parent, which can be the document or its root element
  			// when a statically positioned element is identified
  			doc = elem.ownerDocument;
  			offsetParent = elem.offsetParent || doc.documentElement;
  			while ( offsetParent &&
  				( offsetParent === doc.body || offsetParent === doc.documentElement ) &&
  				jQuery.css( offsetParent, "position" ) === "static" ) {
  
  				offsetParent = offsetParent.parentNode;
  			}
  			if ( offsetParent && offsetParent !== elem && offsetParent.nodeType === 1 ) {
  
  				// Incorporate borders into its offset, since they are outside its content origin
  				parentOffset = jQuery( offsetParent ).offset();
  				parentOffset.top += jQuery.css( offsetParent, "borderTopWidth", true );
  				parentOffset.left += jQuery.css( offsetParent, "borderLeftWidth", true );
  			}
  		}
  
  		// Subtract parent offsets and element margins
  		return {
  			top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ),
  			left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true )
  		};
  	},
  
  	// This method will return documentElement in the following cases:
  	// 1) For the element inside the iframe without offsetParent, this method will return
  	//    documentElement of the parent window
  	// 2) For the hidden or detached element
  	// 3) For body or html element, i.e. in case of the html node - it will return itself
  	//
  	// but those exceptions were never presented as a real life use-cases
  	// and might be considered as more preferable results.
  	//
  	// This logic, however, is not guaranteed and can change at any point in the future
  	offsetParent: function() {
  		return this.map( function() {
  			var offsetParent = this.offsetParent;
  
  			while ( offsetParent && jQuery.css( offsetParent, "position" ) === "static" ) {
  				offsetParent = offsetParent.offsetParent;
  			}
  
  			return offsetParent || documentElement;
  		} );
  	}
  } );
  
  // Create scrollLeft and scrollTop methods
  jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
  	var top = "pageYOffset" === prop;
  
  	jQuery.fn[ method ] = function( val ) {
  		return access( this, function( elem, method, val ) {
  
  			// Coalesce documents and windows
  			var win;
  			if ( isWindow( elem ) ) {
  				win = elem;
  			} else if ( elem.nodeType === 9 ) {
  				win = elem.defaultView;
  			}
  
  			if ( val === undefined ) {
  				return win ? win[ prop ] : elem[ method ];
  			}
  
  			if ( win ) {
  				win.scrollTo(
  					!top ? val : win.pageXOffset,
  					top ? val : win.pageYOffset
  				);
  
  			} else {
  				elem[ method ] = val;
  			}
  		}, method, val, arguments.length );
  	};
  } );
  
  // Support: Safari <=7 - 9.1, Chrome <=37 - 49
  // Add the top/left cssHooks using jQuery.fn.position
  // Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
  // Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347
  // getComputedStyle returns percent when specified for top/left/bottom/right;
  // rather than make the css module depend on the offset module, just check for it here
  jQuery.each( [ "top", "left" ], function( _i, prop ) {
  	jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
  		function( elem, computed ) {
  			if ( computed ) {
  				computed = curCSS( elem, prop );
  
  				// If curCSS returns percentage, fallback to offset
  				return rnumnonpx.test( computed ) ?
  					jQuery( elem ).position()[ prop ] + "px" :
  					computed;
  			}
  		}
  	);
  } );
  
  
  // Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
  jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
  	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name },
  		function( defaultExtra, funcName ) {
  
  		// Margin is only for outerHeight, outerWidth
  		jQuery.fn[ funcName ] = function( margin, value ) {
  			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
  				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );
  
  			return access( this, function( elem, type, value ) {
  				var doc;
  
  				if ( isWindow( elem ) ) {
  
  					// $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)
  					return funcName.indexOf( "outer" ) === 0 ?
  						elem[ "inner" + name ] :
  						elem.document.documentElement[ "client" + name ];
  				}
  
  				// Get document width or height
  				if ( elem.nodeType === 9 ) {
  					doc = elem.documentElement;
  
  					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
  					// whichever is greatest
  					return Math.max(
  						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
  						elem.body[ "offset" + name ], doc[ "offset" + name ],
  						doc[ "client" + name ]
  					);
  				}
  
  				return value === undefined ?
  
  					// Get width or height on the element, requesting but not forcing parseFloat
  					jQuery.css( elem, type, extra ) :
  
  					// Set width or height on the element
  					jQuery.style( elem, type, value, extra );
  			}, type, chainable ? margin : undefined, chainable );
  		};
  	} );
  } );
  
  
  jQuery.each( [
  	"ajaxStart",
  	"ajaxStop",
  	"ajaxComplete",
  	"ajaxError",
  	"ajaxSuccess",
  	"ajaxSend"
  ], function( _i, type ) {
  	jQuery.fn[ type ] = function( fn ) {
  		return this.on( type, fn );
  	};
  } );
  
  
  
  
  jQuery.fn.extend( {
  
  	bind: function( types, data, fn ) {
  		return this.on( types, null, data, fn );
  	},
  	unbind: function( types, fn ) {
  		return this.off( types, null, fn );
  	},
  
  	delegate: function( selector, types, data, fn ) {
  		return this.on( types, selector, data, fn );
  	},
  	undelegate: function( selector, types, fn ) {
  
  		// ( namespace ) or ( selector, types [, fn] )
  		return arguments.length === 1 ?
  			this.off( selector, "**" ) :
  			this.off( types, selector || "**", fn );
  	},
  
  	hover: function( fnOver, fnOut ) {
  		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
  	}
  } );
  
  jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " +
  	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
  	"change select submit keydown keypress keyup contextmenu" ).split( " " ),
  	function( _i, name ) {
  
  		// Handle event binding
  		jQuery.fn[ name ] = function( data, fn ) {
  			return arguments.length > 0 ?
  				this.on( name, null, data, fn ) :
  				this.trigger( name );
  		};
  	} );
  
  
  
  
  // Support: Android <=4.0 only
  // Make sure we trim BOM and NBSP
  var rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;
  
  // Bind a function to a context, optionally partially applying any
  // arguments.
  // jQuery.proxy is deprecated to promote standards (specifically Function#bind)
  // However, it is not slated for removal any time soon
  jQuery.proxy = function( fn, context ) {
  	var tmp, args, proxy;
  
  	if ( typeof context === "string" ) {
  		tmp = fn[ context ];
  		context = fn;
  		fn = tmp;
  	}
  
  	// Quick check to determine if target is callable, in the spec
  	// this throws a TypeError, but we will just return undefined.
  	if ( !isFunction( fn ) ) {
  		return undefined;
  	}
  
  	// Simulated bind
  	args = slice.call( arguments, 2 );
  	proxy = function() {
  		return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
  	};
  
  	// Set the guid of unique handler to the same of original handler, so it can be removed
  	proxy.guid = fn.guid = fn.guid || jQuery.guid++;
  
  	return proxy;
  };
  
  jQuery.holdReady = function( hold ) {
  	if ( hold ) {
  		jQuery.readyWait++;
  	} else {
  		jQuery.ready( true );
  	}
  };
  jQuery.isArray = Array.isArray;
  jQuery.parseJSON = JSON.parse;
  jQuery.nodeName = nodeName;
  jQuery.isFunction = isFunction;
  jQuery.isWindow = isWindow;
  jQuery.camelCase = camelCase;
  jQuery.type = toType;
  
  jQuery.now = Date.now;
  
  jQuery.isNumeric = function( obj ) {
  
  	// As of jQuery 3.0, isNumeric is limited to
  	// strings and numbers (primitives or objects)
  	// that can be coerced to finite numbers (gh-2662)
  	var type = jQuery.type( obj );
  	return ( type === "number" || type === "string" ) &&
  
  		// parseFloat NaNs numeric-cast false positives ("")
  		// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
  		// subtraction forces infinities to NaN
  		!isNaN( obj - parseFloat( obj ) );
  };
  
  jQuery.trim = function( text ) {
  	return text == null ?
  		"" :
  		( text + "" ).replace( rtrim, "" );
  };
  
  
  
  // Register as a named AMD module, since jQuery can be concatenated with other
  // files that may use define, but not via a proper concatenation script that
  // understands anonymous AMD modules. A named AMD is safest and most robust
  // way to register. Lowercase jquery is used because AMD module names are
  // derived from file names, and jQuery is normally delivered in a lowercase
  // file name. Do this after creating the global so that if an AMD module wants
  // to call noConflict to hide this version of jQuery, it will work.
  
  // Note that for maximum portability, libraries that are not jQuery should
  // declare themselves as anonymous modules, and avoid setting a global if an
  // AMD loader is present. jQuery is a special case. For more information, see
  // https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon
  
  if ( true ) {
  	!(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_RESULT__ = (function() {
  		return jQuery;
  	}).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
  }
  
  
  
  
  var
  
  	// Map over jQuery in case of overwrite
  	_jQuery = window.jQuery,
  
  	// Map over the $ in case of overwrite
  	_$ = window.$;
  
  jQuery.noConflict = function( deep ) {
  	if ( window.$ === jQuery ) {
  		window.$ = _$;
  	}
  
  	if ( deep && window.jQuery === jQuery ) {
  		window.jQuery = _jQuery;
  	}
  
  	return jQuery;
  };
  
  // Expose jQuery and $ identifiers, even in AMD
  // (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
  // and CommonJS for browser emulators (#13566)
  if ( typeof noGlobal === "undefined" ) {
  	window.jQuery = window.$ = jQuery;
  }
  
  
  
  
  return jQuery;
  } );
  
  
  /***/ }),
  
  /***/ "./node_modules/lodash/lodash.js":
  /*!***************************************!*\
    !*** ./node_modules/lodash/lodash.js ***!
    \***************************************/
  /*! no static exports found */
  /***/ (function(module, exports, __webpack_require__) {
  
  /* WEBPACK VAR INJECTION */(function(global, module) {var __WEBPACK_AMD_DEFINE_RESULT__;/**
   * @license
   * Lodash <https://lodash.com/>
   * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
   * Released under MIT license <https://lodash.com/license>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   */
  ;(function() {
  
    /** Used as a safe reference for `undefined` in pre-ES5 environments. */
    var undefined;
  
    /** Used as the semantic version number. */
    var VERSION = '4.17.20';
  
    /** Used as the size to enable large array optimizations. */
    var LARGE_ARRAY_SIZE = 200;
  
    /** Error message constants. */
    var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',
        FUNC_ERROR_TEXT = 'Expected a function';
  
    /** Used to stand-in for `undefined` hash values. */
    var HASH_UNDEFINED = '__lodash_hash_undefined__';
  
    /** Used as the maximum memoize cache size. */
    var MAX_MEMOIZE_SIZE = 500;
  
    /** Used as the internal argument placeholder. */
    var PLACEHOLDER = '__lodash_placeholder__';
  
    /** Used to compose bitmasks for cloning. */
    var CLONE_DEEP_FLAG = 1,
        CLONE_FLAT_FLAG = 2,
        CLONE_SYMBOLS_FLAG = 4;
  
    /** Used to compose bitmasks for value comparisons. */
    var COMPARE_PARTIAL_FLAG = 1,
        COMPARE_UNORDERED_FLAG = 2;
  
    /** Used to compose bitmasks for function metadata. */
    var WRAP_BIND_FLAG = 1,
        WRAP_BIND_KEY_FLAG = 2,
        WRAP_CURRY_BOUND_FLAG = 4,
        WRAP_CURRY_FLAG = 8,
        WRAP_CURRY_RIGHT_FLAG = 16,
        WRAP_PARTIAL_FLAG = 32,
        WRAP_PARTIAL_RIGHT_FLAG = 64,
        WRAP_ARY_FLAG = 128,
        WRAP_REARG_FLAG = 256,
        WRAP_FLIP_FLAG = 512;
  
    /** Used as default options for `_.truncate`. */
    var DEFAULT_TRUNC_LENGTH = 30,
        DEFAULT_TRUNC_OMISSION = '...';
  
    /** Used to detect hot functions by number of calls within a span of milliseconds. */
    var HOT_COUNT = 800,
        HOT_SPAN = 16;
  
    /** Used to indicate the type of lazy iteratees. */
    var LAZY_FILTER_FLAG = 1,
        LAZY_MAP_FLAG = 2,
        LAZY_WHILE_FLAG = 3;
  
    /** Used as references for various `Number` constants. */
    var INFINITY = 1 / 0,
        MAX_SAFE_INTEGER = 9007199254740991,
        MAX_INTEGER = 1.7976931348623157e+308,
        NAN = 0 / 0;
  
    /** Used as references for the maximum length and index of an array. */
    var MAX_ARRAY_LENGTH = 4294967295,
        MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
        HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;
  
    /** Used to associate wrap methods with their bit flags. */
    var wrapFlags = [
      ['ary', WRAP_ARY_FLAG],
      ['bind', WRAP_BIND_FLAG],
      ['bindKey', WRAP_BIND_KEY_FLAG],
      ['curry', WRAP_CURRY_FLAG],
      ['curryRight', WRAP_CURRY_RIGHT_FLAG],
      ['flip', WRAP_FLIP_FLAG],
      ['partial', WRAP_PARTIAL_FLAG],
      ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],
      ['rearg', WRAP_REARG_FLAG]
    ];
  
    /** `Object#toString` result references. */
    var argsTag = '[object Arguments]',
        arrayTag = '[object Array]',
        asyncTag = '[object AsyncFunction]',
        boolTag = '[object Boolean]',
        dateTag = '[object Date]',
        domExcTag = '[object DOMException]',
        errorTag = '[object Error]',
        funcTag = '[object Function]',
        genTag = '[object GeneratorFunction]',
        mapTag = '[object Map]',
        numberTag = '[object Number]',
        nullTag = '[object Null]',
        objectTag = '[object Object]',
        promiseTag = '[object Promise]',
        proxyTag = '[object Proxy]',
        regexpTag = '[object RegExp]',
        setTag = '[object Set]',
        stringTag = '[object String]',
        symbolTag = '[object Symbol]',
        undefinedTag = '[object Undefined]',
        weakMapTag = '[object WeakMap]',
        weakSetTag = '[object WeakSet]';
  
    var arrayBufferTag = '[object ArrayBuffer]',
        dataViewTag = '[object DataView]',
        float32Tag = '[object Float32Array]',
        float64Tag = '[object Float64Array]',
        int8Tag = '[object Int8Array]',
        int16Tag = '[object Int16Array]',
        int32Tag = '[object Int32Array]',
        uint8Tag = '[object Uint8Array]',
        uint8ClampedTag = '[object Uint8ClampedArray]',
        uint16Tag = '[object Uint16Array]',
        uint32Tag = '[object Uint32Array]';
  
    /** Used to match empty string literals in compiled template source. */
    var reEmptyStringLeading = /\b__p \+= '';/g,
        reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
        reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;
  
    /** Used to match HTML entities and HTML characters. */
    var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
        reUnescapedHtml = /[&<>"']/g,
        reHasEscapedHtml = RegExp(reEscapedHtml.source),
        reHasUnescapedHtml = RegExp(reUnescapedHtml.source);
  
    /** Used to match template delimiters. */
    var reEscape = /<%-([\s\S]+?)%>/g,
        reEvaluate = /<%([\s\S]+?)%>/g,
        reInterpolate = /<%=([\s\S]+?)%>/g;
  
    /** Used to match property names within property paths. */
    var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
        reIsPlainProp = /^\w*$/,
        rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
  
    /**
     * Used to match `RegExp`
     * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
     */
    var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
        reHasRegExpChar = RegExp(reRegExpChar.source);
  
    /** Used to match leading and trailing whitespace. */
    var reTrim = /^\s+|\s+$/g,
        reTrimStart = /^\s+/,
        reTrimEnd = /\s+$/;
  
    /** Used to match wrap detail comments. */
    var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/,
        reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/,
        reSplitDetails = /,? & /;
  
    /** Used to match words composed of alphanumeric characters. */
    var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;
  
    /** Used to match backslashes in property paths. */
    var reEscapeChar = /\\(\\)?/g;
  
    /**
     * Used to match
     * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
     */
    var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;
  
    /** Used to match `RegExp` flags from their coerced string values. */
    var reFlags = /\w*$/;
  
    /** Used to detect bad signed hexadecimal string values. */
    var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
  
    /** Used to detect binary string values. */
    var reIsBinary = /^0b[01]+$/i;
  
    /** Used to detect host constructors (Safari). */
    var reIsHostCtor = /^\[object .+?Constructor\]$/;
  
    /** Used to detect octal string values. */
    var reIsOctal = /^0o[0-7]+$/i;
  
    /** Used to detect unsigned integer values. */
    var reIsUint = /^(?:0|[1-9]\d*)$/;
  
    /** Used to match Latin Unicode letters (excluding mathematical operators). */
    var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;
  
    /** Used to ensure capturing order of template delimiters. */
    var reNoMatch = /($^)/;
  
    /** Used to match unescaped characters in compiled string literals. */
    var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
  
    /** Used to compose unicode character classes. */
    var rsAstralRange = '\\ud800-\\udfff',
        rsComboMarksRange = '\\u0300-\\u036f',
        reComboHalfMarksRange = '\\ufe20-\\ufe2f',
        rsComboSymbolsRange = '\\u20d0-\\u20ff',
        rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
        rsDingbatRange = '\\u2700-\\u27bf',
        rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
        rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
        rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
        rsPunctuationRange = '\\u2000-\\u206f',
        rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
        rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
        rsVarRange = '\\ufe0e\\ufe0f',
        rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;
  
    /** Used to compose unicode capture groups. */
    var rsApos = "['\u2019]",
        rsAstral = '[' + rsAstralRange + ']',
        rsBreak = '[' + rsBreakRange + ']',
        rsCombo = '[' + rsComboRange + ']',
        rsDigits = '\\d+',
        rsDingbat = '[' + rsDingbatRange + ']',
        rsLower = '[' + rsLowerRange + ']',
        rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
        rsFitz = '\\ud83c[\\udffb-\\udfff]',
        rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
        rsNonAstral = '[^' + rsAstralRange + ']',
        rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
        rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
        rsUpper = '[' + rsUpperRange + ']',
        rsZWJ = '\\u200d';
  
    /** Used to compose unicode regexes. */
    var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
        rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
        rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
        rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
        reOptMod = rsModifier + '?',
        rsOptVar = '[' + rsVarRange + ']?',
        rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
        rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
        rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
        rsSeq = rsOptVar + reOptMod + rsOptJoin,
        rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
        rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
  
    /** Used to match apostrophes. */
    var reApos = RegExp(rsApos, 'g');
  
    /**
     * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
     * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
     */
    var reComboMark = RegExp(rsCombo, 'g');
  
    /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
    var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
  
    /** Used to match complex or compound words. */
    var reUnicodeWord = RegExp([
      rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
      rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
      rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
      rsUpper + '+' + rsOptContrUpper,
      rsOrdUpper,
      rsOrdLower,
      rsDigits,
      rsEmoji
    ].join('|'), 'g');
  
    /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
    var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');
  
    /** Used to detect strings that need a more robust regexp to match words. */
    var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;
  
    /** Used to assign default `context` object properties. */
    var contextProps = [
      'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',
      'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',
      'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',
      'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
      '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'
    ];
  
    /** Used to make template sourceURLs easier to identify. */
    var templateCounter = -1;
  
    /** Used to identify `toStringTag` values of typed arrays. */
    var typedArrayTags = {};
    typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
    typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
    typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
    typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
    typedArrayTags[uint32Tag] = true;
    typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
    typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
    typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
    typedArrayTags[errorTag] = typedArrayTags[funcTag] =
    typedArrayTags[mapTag] = typedArrayTags[numberTag] =
    typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
    typedArrayTags[setTag] = typedArrayTags[stringTag] =
    typedArrayTags[weakMapTag] = false;
  
    /** Used to identify `toStringTag` values supported by `_.clone`. */
    var cloneableTags = {};
    cloneableTags[argsTag] = cloneableTags[arrayTag] =
    cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
    cloneableTags[boolTag] = cloneableTags[dateTag] =
    cloneableTags[float32Tag] = cloneableTags[float64Tag] =
    cloneableTags[int8Tag] = cloneableTags[int16Tag] =
    cloneableTags[int32Tag] = cloneableTags[mapTag] =
    cloneableTags[numberTag] = cloneableTags[objectTag] =
    cloneableTags[regexpTag] = cloneableTags[setTag] =
    cloneableTags[stringTag] = cloneableTags[symbolTag] =
    cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
    cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
    cloneableTags[errorTag] = cloneableTags[funcTag] =
    cloneableTags[weakMapTag] = false;
  
    /** Used to map Latin Unicode letters to basic Latin letters. */
    var deburredLetters = {
      // Latin-1 Supplement block.
      '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
      '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
      '\xc7': 'C',  '\xe7': 'c',
      '\xd0': 'D',  '\xf0': 'd',
      '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
      '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
      '\xcc': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
      '\xec': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
      '\xd1': 'N',  '\xf1': 'n',
      '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
      '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
      '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
      '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
      '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
      '\xc6': 'Ae', '\xe6': 'ae',
      '\xde': 'Th', '\xfe': 'th',
      '\xdf': 'ss',
      // Latin Extended-A block.
      '\u0100': 'A',  '\u0102': 'A', '\u0104': 'A',
      '\u0101': 'a',  '\u0103': 'a', '\u0105': 'a',
      '\u0106': 'C',  '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
      '\u0107': 'c',  '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
      '\u010e': 'D',  '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
      '\u0112': 'E',  '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
      '\u0113': 'e',  '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
      '\u011c': 'G',  '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
      '\u011d': 'g',  '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
      '\u0124': 'H',  '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
      '\u0128': 'I',  '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
      '\u0129': 'i',  '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
      '\u0134': 'J',  '\u0135': 'j',
      '\u0136': 'K',  '\u0137': 'k', '\u0138': 'k',
      '\u0139': 'L',  '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
      '\u013a': 'l',  '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
      '\u0143': 'N',  '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
      '\u0144': 'n',  '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
      '\u014c': 'O',  '\u014e': 'O', '\u0150': 'O',
      '\u014d': 'o',  '\u014f': 'o', '\u0151': 'o',
      '\u0154': 'R',  '\u0156': 'R', '\u0158': 'R',
      '\u0155': 'r',  '\u0157': 'r', '\u0159': 'r',
      '\u015a': 'S',  '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
      '\u015b': 's',  '\u015d': 's', '\u015f': 's', '\u0161': 's',
      '\u0162': 'T',  '\u0164': 'T', '\u0166': 'T',
      '\u0163': 't',  '\u0165': 't', '\u0167': 't',
      '\u0168': 'U',  '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
      '\u0169': 'u',  '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
      '\u0174': 'W',  '\u0175': 'w',
      '\u0176': 'Y',  '\u0177': 'y', '\u0178': 'Y',
      '\u0179': 'Z',  '\u017b': 'Z', '\u017d': 'Z',
      '\u017a': 'z',  '\u017c': 'z', '\u017e': 'z',
      '\u0132': 'IJ', '\u0133': 'ij',
      '\u0152': 'Oe', '\u0153': 'oe',
      '\u0149': "'n", '\u017f': 's'
    };
  
    /** Used to map characters to HTML entities. */
    var htmlEscapes = {
      '&': '&amp;',
      '<': '&lt;',
      '>': '&gt;',
      '"': '&quot;',
      "'": '&#39;'
    };
  
    /** Used to map HTML entities to characters. */
    var htmlUnescapes = {
      '&amp;': '&',
      '&lt;': '<',
      '&gt;': '>',
      '&quot;': '"',
      '&#39;': "'"
    };
  
    /** Used to escape characters for inclusion in compiled string literals. */
    var stringEscapes = {
      '\\': '\\',
      "'": "'",
      '\n': 'n',
      '\r': 'r',
      '\u2028': 'u2028',
      '\u2029': 'u2029'
    };
  
    /** Built-in method references without a dependency on `root`. */
    var freeParseFloat = parseFloat,
        freeParseInt = parseInt;
  
    /** Detect free variable `global` from Node.js. */
    var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
  
    /** Detect free variable `self`. */
    var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
  
    /** Used as a reference to the global object. */
    var root = freeGlobal || freeSelf || Function('return this')();
  
    /** Detect free variable `exports`. */
    var freeExports =  true && exports && !exports.nodeType && exports;
  
    /** Detect free variable `module`. */
    var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
  
    /** Detect the popular CommonJS extension `module.exports`. */
    var moduleExports = freeModule && freeModule.exports === freeExports;
  
    /** Detect free variable `process` from Node.js. */
    var freeProcess = moduleExports && freeGlobal.process;
  
    /** Used to access faster Node.js helpers. */
    var nodeUtil = (function() {
      try {
        // Use `util.types` for Node.js 10+.
        var types = freeModule && freeModule.require && freeModule.require('util').types;
  
        if (types) {
          return types;
        }
  
        // Legacy `process.binding('util')` for Node.js < 10.
        return freeProcess && freeProcess.binding && freeProcess.binding('util');
      } catch (e) {}
    }());
  
    /* Node.js helper references. */
    var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,
        nodeIsDate = nodeUtil && nodeUtil.isDate,
        nodeIsMap = nodeUtil && nodeUtil.isMap,
        nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,
        nodeIsSet = nodeUtil && nodeUtil.isSet,
        nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;
  
    /*--------------------------------------------------------------------------*/
  
    /**
     * A faster alternative to `Function#apply`, this function invokes `func`
     * with the `this` binding of `thisArg` and the arguments of `args`.
     *
     * @private
     * @param {Function} func The function to invoke.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {Array} args The arguments to invoke `func` with.
     * @returns {*} Returns the result of `func`.
     */
    function apply(func, thisArg, args) {
      switch (args.length) {
        case 0: return func.call(thisArg);
        case 1: return func.call(thisArg, args[0]);
        case 2: return func.call(thisArg, args[0], args[1]);
        case 3: return func.call(thisArg, args[0], args[1], args[2]);
      }
      return func.apply(thisArg, args);
    }
  
    /**
     * A specialized version of `baseAggregator` for arrays.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} setter The function to set `accumulator` values.
     * @param {Function} iteratee The iteratee to transform keys.
     * @param {Object} accumulator The initial aggregated object.
     * @returns {Function} Returns `accumulator`.
     */
    function arrayAggregator(array, setter, iteratee, accumulator) {
      var index = -1,
          length = array == null ? 0 : array.length;
  
      while (++index < length) {
        var value = array[index];
        setter(accumulator, value, iteratee(value), array);
      }
      return accumulator;
    }
  
    /**
     * A specialized version of `_.forEach` for arrays without support for
     * iteratee shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns `array`.
     */
    function arrayEach(array, iteratee) {
      var index = -1,
          length = array == null ? 0 : array.length;
  
      while (++index < length) {
        if (iteratee(array[index], index, array) === false) {
          break;
        }
      }
      return array;
    }
  
    /**
     * A specialized version of `_.forEachRight` for arrays without support for
     * iteratee shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns `array`.
     */
    function arrayEachRight(array, iteratee) {
      var length = array == null ? 0 : array.length;
  
      while (length--) {
        if (iteratee(array[length], length, array) === false) {
          break;
        }
      }
      return array;
    }
  
    /**
     * A specialized version of `_.every` for arrays without support for
     * iteratee shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`.
     */
    function arrayEvery(array, predicate) {
      var index = -1,
          length = array == null ? 0 : array.length;
  
      while (++index < length) {
        if (!predicate(array[index], index, array)) {
          return false;
        }
      }
      return true;
    }
  
    /**
     * A specialized version of `_.filter` for arrays without support for
     * iteratee shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     */
    function arrayFilter(array, predicate) {
      var index = -1,
          length = array == null ? 0 : array.length,
          resIndex = 0,
          result = [];
  
      while (++index < length) {
        var value = array[index];
        if (predicate(value, index, array)) {
          result[resIndex++] = value;
        }
      }
      return result;
    }
  
    /**
     * A specialized version of `_.includes` for arrays without support for
     * specifying an index to search from.
     *
     * @private
     * @param {Array} [array] The array to inspect.
     * @param {*} target The value to search for.
     * @returns {boolean} Returns `true` if `target` is found, else `false`.
     */
    function arrayIncludes(array, value) {
      var length = array == null ? 0 : array.length;
      return !!length && baseIndexOf(array, value, 0) > -1;
    }
  
    /**
     * This function is like `arrayIncludes` except that it accepts a comparator.
     *
     * @private
     * @param {Array} [array] The array to inspect.
     * @param {*} target The value to search for.
     * @param {Function} comparator The comparator invoked per element.
     * @returns {boolean} Returns `true` if `target` is found, else `false`.
     */
    function arrayIncludesWith(array, value, comparator) {
      var index = -1,
          length = array == null ? 0 : array.length;
  
      while (++index < length) {
        if (comparator(value, array[index])) {
          return true;
        }
      }
      return false;
    }
  
    /**
     * A specialized version of `_.map` for arrays without support for iteratee
     * shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     */
    function arrayMap(array, iteratee) {
      var index = -1,
          length = array == null ? 0 : array.length,
          result = Array(length);
  
      while (++index < length) {
        result[index] = iteratee(array[index], index, array);
      }
      return result;
    }
  
    /**
     * Appends the elements of `values` to `array`.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {Array} values The values to append.
     * @returns {Array} Returns `array`.
     */
    function arrayPush(array, values) {
      var index = -1,
          length = values.length,
          offset = array.length;
  
      while (++index < length) {
        array[offset + index] = values[index];
      }
      return array;
    }
  
    /**
     * A specialized version of `_.reduce` for arrays without support for
     * iteratee shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @param {boolean} [initAccum] Specify using the first element of `array` as
     *  the initial value.
     * @returns {*} Returns the accumulated value.
     */
    function arrayReduce(array, iteratee, accumulator, initAccum) {
      var index = -1,
          length = array == null ? 0 : array.length;
  
      if (initAccum && length) {
        accumulator = array[++index];
      }
      while (++index < length) {
        accumulator = iteratee(accumulator, array[index], index, array);
      }
      return accumulator;
    }
  
    /**
     * A specialized version of `_.reduceRight` for arrays without support for
     * iteratee shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @param {boolean} [initAccum] Specify using the last element of `array` as
     *  the initial value.
     * @returns {*} Returns the accumulated value.
     */
    function arrayReduceRight(array, iteratee, accumulator, initAccum) {
      var length = array == null ? 0 : array.length;
      if (initAccum && length) {
        accumulator = array[--length];
      }
      while (length--) {
        accumulator = iteratee(accumulator, array[length], length, array);
      }
      return accumulator;
    }
  
    /**
     * A specialized version of `_.some` for arrays without support for iteratee
     * shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     */
    function arraySome(array, predicate) {
      var index = -1,
          length = array == null ? 0 : array.length;
  
      while (++index < length) {
        if (predicate(array[index], index, array)) {
          return true;
        }
      }
      return false;
    }
  
    /**
     * Gets the size of an ASCII `string`.
     *
     * @private
     * @param {string} string The string inspect.
     * @returns {number} Returns the string size.
     */
    var asciiSize = baseProperty('length');
  
    /**
     * Converts an ASCII `string` to an array.
     *
     * @private
     * @param {string} string The string to convert.
     * @returns {Array} Returns the converted array.
     */
    function asciiToArray(string) {
      return string.split('');
    }
  
    /**
     * Splits an ASCII `string` into an array of its words.
     *
     * @private
     * @param {string} The string to inspect.
     * @returns {Array} Returns the words of `string`.
     */
    function asciiWords(string) {
      return string.match(reAsciiWord) || [];
    }
  
    /**
     * The base implementation of methods like `_.findKey` and `_.findLastKey`,
     * without support for iteratee shorthands, which iterates over `collection`
     * using `eachFunc`.
     *
     * @private
     * @param {Array|Object} collection The collection to inspect.
     * @param {Function} predicate The function invoked per iteration.
     * @param {Function} eachFunc The function to iterate over `collection`.
     * @returns {*} Returns the found element or its key, else `undefined`.
     */
    function baseFindKey(collection, predicate, eachFunc) {
      var result;
      eachFunc(collection, function(value, key, collection) {
        if (predicate(value, key, collection)) {
          result = key;
          return false;
        }
      });
      return result;
    }
  
    /**
     * The base implementation of `_.findIndex` and `_.findLastIndex` without
     * support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Function} predicate The function invoked per iteration.
     * @param {number} fromIndex The index to search from.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function baseFindIndex(array, predicate, fromIndex, fromRight) {
      var length = array.length,
          index = fromIndex + (fromRight ? 1 : -1);
  
      while ((fromRight ? index-- : ++index < length)) {
        if (predicate(array[index], index, array)) {
          return index;
        }
      }
      return -1;
    }
  
    /**
     * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} fromIndex The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function baseIndexOf(array, value, fromIndex) {
      return value === value
        ? strictIndexOf(array, value, fromIndex)
        : baseFindIndex(array, baseIsNaN, fromIndex);
    }
  
    /**
     * This function is like `baseIndexOf` except that it accepts a comparator.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} fromIndex The index to search from.
     * @param {Function} comparator The comparator invoked per element.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function baseIndexOfWith(array, value, fromIndex, comparator) {
      var index = fromIndex - 1,
          length = array.length;
  
      while (++index < length) {
        if (comparator(array[index], value)) {
          return index;
        }
      }
      return -1;
    }
  
    /**
     * The base implementation of `_.isNaN` without support for number objects.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
     */
    function baseIsNaN(value) {
      return value !== value;
    }
  
    /**
     * The base implementation of `_.mean` and `_.meanBy` without support for
     * iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {number} Returns the mean.
     */
    function baseMean(array, iteratee) {
      var length = array == null ? 0 : array.length;
      return length ? (baseSum(array, iteratee) / length) : NAN;
    }
  
    /**
     * The base implementation of `_.property` without support for deep paths.
     *
     * @private
     * @param {string} key The key of the property to get.
     * @returns {Function} Returns the new accessor function.
     */
    function baseProperty(key) {
      return function(object) {
        return object == null ? undefined : object[key];
      };
    }
  
    /**
     * The base implementation of `_.propertyOf` without support for deep paths.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Function} Returns the new accessor function.
     */
    function basePropertyOf(object) {
      return function(key) {
        return object == null ? undefined : object[key];
      };
    }
  
    /**
     * The base implementation of `_.reduce` and `_.reduceRight`, without support
     * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {*} accumulator The initial value.
     * @param {boolean} initAccum Specify using the first or last element of
     *  `collection` as the initial value.
     * @param {Function} eachFunc The function to iterate over `collection`.
     * @returns {*} Returns the accumulated value.
     */
    function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
      eachFunc(collection, function(value, index, collection) {
        accumulator = initAccum
          ? (initAccum = false, value)
          : iteratee(accumulator, value, index, collection);
      });
      return accumulator;
    }
  
    /**
     * The base implementation of `_.sortBy` which uses `comparer` to define the
     * sort order of `array` and replaces criteria objects with their corresponding
     * values.
     *
     * @private
     * @param {Array} array The array to sort.
     * @param {Function} comparer The function to define sort order.
     * @returns {Array} Returns `array`.
     */
    function baseSortBy(array, comparer) {
      var length = array.length;
  
      array.sort(comparer);
      while (length--) {
        array[length] = array[length].value;
      }
      return array;
    }
  
    /**
     * The base implementation of `_.sum` and `_.sumBy` without support for
     * iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {number} Returns the sum.
     */
    function baseSum(array, iteratee) {
      var result,
          index = -1,
          length = array.length;
  
      while (++index < length) {
        var current = iteratee(array[index]);
        if (current !== undefined) {
          result = result === undefined ? current : (result + current);
        }
      }
      return result;
    }
  
    /**
     * The base implementation of `_.times` without support for iteratee shorthands
     * or max array length checks.
     *
     * @private
     * @param {number} n The number of times to invoke `iteratee`.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the array of results.
     */
    function baseTimes(n, iteratee) {
      var index = -1,
          result = Array(n);
  
      while (++index < n) {
        result[index] = iteratee(index);
      }
      return result;
    }
  
    /**
     * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
     * of key-value pairs for `object` corresponding to the property names of `props`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array} props The property names to get values for.
     * @returns {Object} Returns the key-value pairs.
     */
    function baseToPairs(object, props) {
      return arrayMap(props, function(key) {
        return [key, object[key]];
      });
    }
  
    /**
     * The base implementation of `_.unary` without support for storing metadata.
     *
     * @private
     * @param {Function} func The function to cap arguments for.
     * @returns {Function} Returns the new capped function.
     */
    function baseUnary(func) {
      return function(value) {
        return func(value);
      };
    }
  
    /**
     * The base implementation of `_.values` and `_.valuesIn` which creates an
     * array of `object` property values corresponding to the property names
     * of `props`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array} props The property names to get values for.
     * @returns {Object} Returns the array of property values.
     */
    function baseValues(object, props) {
      return arrayMap(props, function(key) {
        return object[key];
      });
    }
  
    /**
     * Checks if a `cache` value for `key` exists.
     *
     * @private
     * @param {Object} cache The cache to query.
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function cacheHas(cache, key) {
      return cache.has(key);
    }
  
    /**
     * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
     * that is not found in the character symbols.
     *
     * @private
     * @param {Array} strSymbols The string symbols to inspect.
     * @param {Array} chrSymbols The character symbols to find.
     * @returns {number} Returns the index of the first unmatched string symbol.
     */
    function charsStartIndex(strSymbols, chrSymbols) {
      var index = -1,
          length = strSymbols.length;
  
      while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
      return index;
    }
  
    /**
     * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
     * that is not found in the character symbols.
     *
     * @private
     * @param {Array} strSymbols The string symbols to inspect.
     * @param {Array} chrSymbols The character symbols to find.
     * @returns {number} Returns the index of the last unmatched string symbol.
     */
    function charsEndIndex(strSymbols, chrSymbols) {
      var index = strSymbols.length;
  
      while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
      return index;
    }
  
    /**
     * Gets the number of `placeholder` occurrences in `array`.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {*} placeholder The placeholder to search for.
     * @returns {number} Returns the placeholder count.
     */
    function countHolders(array, placeholder) {
      var length = array.length,
          result = 0;
  
      while (length--) {
        if (array[length] === placeholder) {
          ++result;
        }
      }
      return result;
    }
  
    /**
     * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
     * letters to basic Latin letters.
     *
     * @private
     * @param {string} letter The matched letter to deburr.
     * @returns {string} Returns the deburred letter.
     */
    var deburrLetter = basePropertyOf(deburredLetters);
  
    /**
     * Used by `_.escape` to convert characters to HTML entities.
     *
     * @private
     * @param {string} chr The matched character to escape.
     * @returns {string} Returns the escaped character.
     */
    var escapeHtmlChar = basePropertyOf(htmlEscapes);
  
    /**
     * Used by `_.template` to escape characters for inclusion in compiled string literals.
     *
     * @private
     * @param {string} chr The matched character to escape.
     * @returns {string} Returns the escaped character.
     */
    function escapeStringChar(chr) {
      return '\\' + stringEscapes[chr];
    }
  
    /**
     * Gets the value at `key` of `object`.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {string} key The key of the property to get.
     * @returns {*} Returns the property value.
     */
    function getValue(object, key) {
      return object == null ? undefined : object[key];
    }
  
    /**
     * Checks if `string` contains Unicode symbols.
     *
     * @private
     * @param {string} string The string to inspect.
     * @returns {boolean} Returns `true` if a symbol is found, else `false`.
     */
    function hasUnicode(string) {
      return reHasUnicode.test(string);
    }
  
    /**
     * Checks if `string` contains a word composed of Unicode symbols.
     *
     * @private
     * @param {string} string The string to inspect.
     * @returns {boolean} Returns `true` if a word is found, else `false`.
     */
    function hasUnicodeWord(string) {
      return reHasUnicodeWord.test(string);
    }
  
    /**
     * Converts `iterator` to an array.
     *
     * @private
     * @param {Object} iterator The iterator to convert.
     * @returns {Array} Returns the converted array.
     */
    function iteratorToArray(iterator) {
      var data,
          result = [];
  
      while (!(data = iterator.next()).done) {
        result.push(data.value);
      }
      return result;
    }
  
    /**
     * Converts `map` to its key-value pairs.
     *
     * @private
     * @param {Object} map The map to convert.
     * @returns {Array} Returns the key-value pairs.
     */
    function mapToArray(map) {
      var index = -1,
          result = Array(map.size);
  
      map.forEach(function(value, key) {
        result[++index] = [key, value];
      });
      return result;
    }
  
    /**
     * Creates a unary function that invokes `func` with its argument transformed.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {Function} transform The argument transform.
     * @returns {Function} Returns the new function.
     */
    function overArg(func, transform) {
      return function(arg) {
        return func(transform(arg));
      };
    }
  
    /**
     * Replaces all `placeholder` elements in `array` with an internal placeholder
     * and returns an array of their indexes.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {*} placeholder The placeholder to replace.
     * @returns {Array} Returns the new array of placeholder indexes.
     */
    function replaceHolders(array, placeholder) {
      var index = -1,
          length = array.length,
          resIndex = 0,
          result = [];
  
      while (++index < length) {
        var value = array[index];
        if (value === placeholder || value === PLACEHOLDER) {
          array[index] = PLACEHOLDER;
          result[resIndex++] = index;
        }
      }
      return result;
    }
  
    /**
     * Converts `set` to an array of its values.
     *
     * @private
     * @param {Object} set The set to convert.
     * @returns {Array} Returns the values.
     */
    function setToArray(set) {
      var index = -1,
          result = Array(set.size);
  
      set.forEach(function(value) {
        result[++index] = value;
      });
      return result;
    }
  
    /**
     * Converts `set` to its value-value pairs.
     *
     * @private
     * @param {Object} set The set to convert.
     * @returns {Array} Returns the value-value pairs.
     */
    function setToPairs(set) {
      var index = -1,
          result = Array(set.size);
  
      set.forEach(function(value) {
        result[++index] = [value, value];
      });
      return result;
    }
  
    /**
     * A specialized version of `_.indexOf` which performs strict equality
     * comparisons of values, i.e. `===`.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} fromIndex The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function strictIndexOf(array, value, fromIndex) {
      var index = fromIndex - 1,
          length = array.length;
  
      while (++index < length) {
        if (array[index] === value) {
          return index;
        }
      }
      return -1;
    }
  
    /**
     * A specialized version of `_.lastIndexOf` which performs strict equality
     * comparisons of values, i.e. `===`.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} fromIndex The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function strictLastIndexOf(array, value, fromIndex) {
      var index = fromIndex + 1;
      while (index--) {
        if (array[index] === value) {
          return index;
        }
      }
      return index;
    }
  
    /**
     * Gets the number of symbols in `string`.
     *
     * @private
     * @param {string} string The string to inspect.
     * @returns {number} Returns the string size.
     */
    function stringSize(string) {
      return hasUnicode(string)
        ? unicodeSize(string)
        : asciiSize(string);
    }
  
    /**
     * Converts `string` to an array.
     *
     * @private
     * @param {string} string The string to convert.
     * @returns {Array} Returns the converted array.
     */
    function stringToArray(string) {
      return hasUnicode(string)
        ? unicodeToArray(string)
        : asciiToArray(string);
    }
  
    /**
     * Used by `_.unescape` to convert HTML entities to characters.
     *
     * @private
     * @param {string} chr The matched character to unescape.
     * @returns {string} Returns the unescaped character.
     */
    var unescapeHtmlChar = basePropertyOf(htmlUnescapes);
  
    /**
     * Gets the size of a Unicode `string`.
     *
     * @private
     * @param {string} string The string inspect.
     * @returns {number} Returns the string size.
     */
    function unicodeSize(string) {
      var result = reUnicode.lastIndex = 0;
      while (reUnicode.test(string)) {
        ++result;
      }
      return result;
    }
  
    /**
     * Converts a Unicode `string` to an array.
     *
     * @private
     * @param {string} string The string to convert.
     * @returns {Array} Returns the converted array.
     */
    function unicodeToArray(string) {
      return string.match(reUnicode) || [];
    }
  
    /**
     * Splits a Unicode `string` into an array of its words.
     *
     * @private
     * @param {string} The string to inspect.
     * @returns {Array} Returns the words of `string`.
     */
    function unicodeWords(string) {
      return string.match(reUnicodeWord) || [];
    }
  
    /*--------------------------------------------------------------------------*/
  
    /**
     * Create a new pristine `lodash` function using the `context` object.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category Util
     * @param {Object} [context=root] The context object.
     * @returns {Function} Returns a new `lodash` function.
     * @example
     *
     * _.mixin({ 'foo': _.constant('foo') });
     *
     * var lodash = _.runInContext();
     * lodash.mixin({ 'bar': lodash.constant('bar') });
     *
     * _.isFunction(_.foo);
     * // => true
     * _.isFunction(_.bar);
     * // => false
     *
     * lodash.isFunction(lodash.foo);
     * // => false
     * lodash.isFunction(lodash.bar);
     * // => true
     *
     * // Create a suped-up `defer` in Node.js.
     * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
     */
    var runInContext = (function runInContext(context) {
      context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));
  
      /** Built-in constructor references. */
      var Array = context.Array,
          Date = context.Date,
          Error = context.Error,
          Function = context.Function,
          Math = context.Math,
          Object = context.Object,
          RegExp = context.RegExp,
          String = context.String,
          TypeError = context.TypeError;
  
      /** Used for built-in method references. */
      var arrayProto = Array.prototype,
          funcProto = Function.prototype,
          objectProto = Object.prototype;
  
      /** Used to detect overreaching core-js shims. */
      var coreJsData = context['__core-js_shared__'];
  
      /** Used to resolve the decompiled source of functions. */
      var funcToString = funcProto.toString;
  
      /** Used to check objects for own properties. */
      var hasOwnProperty = objectProto.hasOwnProperty;
  
      /** Used to generate unique IDs. */
      var idCounter = 0;
  
      /** Used to detect methods masquerading as native. */
      var maskSrcKey = (function() {
        var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
        return uid ? ('Symbol(src)_1.' + uid) : '';
      }());
  
      /**
       * Used to resolve the
       * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
       * of values.
       */
      var nativeObjectToString = objectProto.toString;
  
      /** Used to infer the `Object` constructor. */
      var objectCtorString = funcToString.call(Object);
  
      /** Used to restore the original `_` reference in `_.noConflict`. */
      var oldDash = root._;
  
      /** Used to detect if a method is native. */
      var reIsNative = RegExp('^' +
        funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
        .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
      );
  
      /** Built-in value references. */
      var Buffer = moduleExports ? context.Buffer : undefined,
          Symbol = context.Symbol,
          Uint8Array = context.Uint8Array,
          allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,
          getPrototype = overArg(Object.getPrototypeOf, Object),
          objectCreate = Object.create,
          propertyIsEnumerable = objectProto.propertyIsEnumerable,
          splice = arrayProto.splice,
          spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,
          symIterator = Symbol ? Symbol.iterator : undefined,
          symToStringTag = Symbol ? Symbol.toStringTag : undefined;
  
      var defineProperty = (function() {
        try {
          var func = getNative(Object, 'defineProperty');
          func({}, '', {});
          return func;
        } catch (e) {}
      }());
  
      /** Mocked built-ins. */
      var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,
          ctxNow = Date && Date.now !== root.Date.now && Date.now,
          ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;
  
      /* Built-in method references for those with the same name as other `lodash` methods. */
      var nativeCeil = Math.ceil,
          nativeFloor = Math.floor,
          nativeGetSymbols = Object.getOwnPropertySymbols,
          nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
          nativeIsFinite = context.isFinite,
          nativeJoin = arrayProto.join,
          nativeKeys = overArg(Object.keys, Object),
          nativeMax = Math.max,
          nativeMin = Math.min,
          nativeNow = Date.now,
          nativeParseInt = context.parseInt,
          nativeRandom = Math.random,
          nativeReverse = arrayProto.reverse;
  
      /* Built-in method references that are verified to be native. */
      var DataView = getNative(context, 'DataView'),
          Map = getNative(context, 'Map'),
          Promise = getNative(context, 'Promise'),
          Set = getNative(context, 'Set'),
          WeakMap = getNative(context, 'WeakMap'),
          nativeCreate = getNative(Object, 'create');
  
      /** Used to store function metadata. */
      var metaMap = WeakMap && new WeakMap;
  
      /** Used to lookup unminified function names. */
      var realNames = {};
  
      /** Used to detect maps, sets, and weakmaps. */
      var dataViewCtorString = toSource(DataView),
          mapCtorString = toSource(Map),
          promiseCtorString = toSource(Promise),
          setCtorString = toSource(Set),
          weakMapCtorString = toSource(WeakMap);
  
      /** Used to convert symbols to primitives and strings. */
      var symbolProto = Symbol ? Symbol.prototype : undefined,
          symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,
          symbolToString = symbolProto ? symbolProto.toString : undefined;
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Creates a `lodash` object which wraps `value` to enable implicit method
       * chain sequences. Methods that operate on and return arrays, collections,
       * and functions can be chained together. Methods that retrieve a single value
       * or may return a primitive value will automatically end the chain sequence
       * and return the unwrapped value. Otherwise, the value must be unwrapped
       * with `_#value`.
       *
       * Explicit chain sequences, which must be unwrapped with `_#value`, may be
       * enabled using `_.chain`.
       *
       * The execution of chained methods is lazy, that is, it's deferred until
       * `_#value` is implicitly or explicitly called.
       *
       * Lazy evaluation allows several methods to support shortcut fusion.
       * Shortcut fusion is an optimization to merge iteratee calls; this avoids
       * the creation of intermediate arrays and can greatly reduce the number of
       * iteratee executions. Sections of a chain sequence qualify for shortcut
       * fusion if the section is applied to an array and iteratees accept only
       * one argument. The heuristic for whether a section qualifies for shortcut
       * fusion is subject to change.
       *
       * Chaining is supported in custom builds as long as the `_#value` method is
       * directly or indirectly included in the build.
       *
       * In addition to lodash methods, wrappers have `Array` and `String` methods.
       *
       * The wrapper `Array` methods are:
       * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
       *
       * The wrapper `String` methods are:
       * `replace` and `split`
       *
       * The wrapper methods that support shortcut fusion are:
       * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
       * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
       * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
       *
       * The chainable wrapper methods are:
       * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
       * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
       * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
       * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
       * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
       * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
       * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
       * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
       * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
       * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
       * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
       * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
       * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
       * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
       * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
       * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
       * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
       * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
       * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
       * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
       * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
       * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
       * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
       * `zipObject`, `zipObjectDeep`, and `zipWith`
       *
       * The wrapper methods that are **not** chainable by default are:
       * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
       * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
       * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
       * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
       * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
       * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
       * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
       * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
       * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
       * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
       * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
       * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
       * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
       * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
       * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
       * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
       * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
       * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
       * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
       * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
       * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
       * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
       * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
       * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
       * `upperFirst`, `value`, and `words`
       *
       * @name _
       * @constructor
       * @category Seq
       * @param {*} value The value to wrap in a `lodash` instance.
       * @returns {Object} Returns the new `lodash` wrapper instance.
       * @example
       *
       * function square(n) {
       *   return n * n;
       * }
       *
       * var wrapped = _([1, 2, 3]);
       *
       * // Returns an unwrapped value.
       * wrapped.reduce(_.add);
       * // => 6
       *
       * // Returns a wrapped value.
       * var squares = wrapped.map(square);
       *
       * _.isArray(squares);
       * // => false
       *
       * _.isArray(squares.value());
       * // => true
       */
      function lodash(value) {
        if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
          if (value instanceof LodashWrapper) {
            return value;
          }
          if (hasOwnProperty.call(value, '__wrapped__')) {
            return wrapperClone(value);
          }
        }
        return new LodashWrapper(value);
      }
  
      /**
       * The base implementation of `_.create` without support for assigning
       * properties to the created object.
       *
       * @private
       * @param {Object} proto The object to inherit from.
       * @returns {Object} Returns the new object.
       */
      var baseCreate = (function() {
        function object() {}
        return function(proto) {
          if (!isObject(proto)) {
            return {};
          }
          if (objectCreate) {
            return objectCreate(proto);
          }
          object.prototype = proto;
          var result = new object;
          object.prototype = undefined;
          return result;
        };
      }());
  
      /**
       * The function whose prototype chain sequence wrappers inherit from.
       *
       * @private
       */
      function baseLodash() {
        // No operation performed.
      }
  
      /**
       * The base constructor for creating `lodash` wrapper objects.
       *
       * @private
       * @param {*} value The value to wrap.
       * @param {boolean} [chainAll] Enable explicit method chain sequences.
       */
      function LodashWrapper(value, chainAll) {
        this.__wrapped__ = value;
        this.__actions__ = [];
        this.__chain__ = !!chainAll;
        this.__index__ = 0;
        this.__values__ = undefined;
      }
  
      /**
       * By default, the template delimiters used by lodash are like those in
       * embedded Ruby (ERB) as well as ES2015 template strings. Change the
       * following template settings to use alternative delimiters.
       *
       * @static
       * @memberOf _
       * @type {Object}
       */
      lodash.templateSettings = {
  
        /**
         * Used to detect `data` property values to be HTML-escaped.
         *
         * @memberOf _.templateSettings
         * @type {RegExp}
         */
        'escape': reEscape,
  
        /**
         * Used to detect code to be evaluated.
         *
         * @memberOf _.templateSettings
         * @type {RegExp}
         */
        'evaluate': reEvaluate,
  
        /**
         * Used to detect `data` property values to inject.
         *
         * @memberOf _.templateSettings
         * @type {RegExp}
         */
        'interpolate': reInterpolate,
  
        /**
         * Used to reference the data object in the template text.
         *
         * @memberOf _.templateSettings
         * @type {string}
         */
        'variable': '',
  
        /**
         * Used to import variables into the compiled template.
         *
         * @memberOf _.templateSettings
         * @type {Object}
         */
        'imports': {
  
          /**
           * A reference to the `lodash` function.
           *
           * @memberOf _.templateSettings.imports
           * @type {Function}
           */
          '_': lodash
        }
      };
  
      // Ensure wrappers are instances of `baseLodash`.
      lodash.prototype = baseLodash.prototype;
      lodash.prototype.constructor = lodash;
  
      LodashWrapper.prototype = baseCreate(baseLodash.prototype);
      LodashWrapper.prototype.constructor = LodashWrapper;
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
       *
       * @private
       * @constructor
       * @param {*} value The value to wrap.
       */
      function LazyWrapper(value) {
        this.__wrapped__ = value;
        this.__actions__ = [];
        this.__dir__ = 1;
        this.__filtered__ = false;
        this.__iteratees__ = [];
        this.__takeCount__ = MAX_ARRAY_LENGTH;
        this.__views__ = [];
      }
  
      /**
       * Creates a clone of the lazy wrapper object.
       *
       * @private
       * @name clone
       * @memberOf LazyWrapper
       * @returns {Object} Returns the cloned `LazyWrapper` object.
       */
      function lazyClone() {
        var result = new LazyWrapper(this.__wrapped__);
        result.__actions__ = copyArray(this.__actions__);
        result.__dir__ = this.__dir__;
        result.__filtered__ = this.__filtered__;
        result.__iteratees__ = copyArray(this.__iteratees__);
        result.__takeCount__ = this.__takeCount__;
        result.__views__ = copyArray(this.__views__);
        return result;
      }
  
      /**
       * Reverses the direction of lazy iteration.
       *
       * @private
       * @name reverse
       * @memberOf LazyWrapper
       * @returns {Object} Returns the new reversed `LazyWrapper` object.
       */
      function lazyReverse() {
        if (this.__filtered__) {
          var result = new LazyWrapper(this);
          result.__dir__ = -1;
          result.__filtered__ = true;
        } else {
          result = this.clone();
          result.__dir__ *= -1;
        }
        return result;
      }
  
      /**
       * Extracts the unwrapped value from its lazy wrapper.
       *
       * @private
       * @name value
       * @memberOf LazyWrapper
       * @returns {*} Returns the unwrapped value.
       */
      function lazyValue() {
        var array = this.__wrapped__.value(),
            dir = this.__dir__,
            isArr = isArray(array),
            isRight = dir < 0,
            arrLength = isArr ? array.length : 0,
            view = getView(0, arrLength, this.__views__),
            start = view.start,
            end = view.end,
            length = end - start,
            index = isRight ? end : (start - 1),
            iteratees = this.__iteratees__,
            iterLength = iteratees.length,
            resIndex = 0,
            takeCount = nativeMin(length, this.__takeCount__);
  
        if (!isArr || (!isRight && arrLength == length && takeCount == length)) {
          return baseWrapperValue(array, this.__actions__);
        }
        var result = [];
  
        outer:
        while (length-- && resIndex < takeCount) {
          index += dir;
  
          var iterIndex = -1,
              value = array[index];
  
          while (++iterIndex < iterLength) {
            var data = iteratees[iterIndex],
                iteratee = data.iteratee,
                type = data.type,
                computed = iteratee(value);
  
            if (type == LAZY_MAP_FLAG) {
              value = computed;
            } else if (!computed) {
              if (type == LAZY_FILTER_FLAG) {
                continue outer;
              } else {
                break outer;
              }
            }
          }
          result[resIndex++] = value;
        }
        return result;
      }
  
      // Ensure `LazyWrapper` is an instance of `baseLodash`.
      LazyWrapper.prototype = baseCreate(baseLodash.prototype);
      LazyWrapper.prototype.constructor = LazyWrapper;
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Creates a hash object.
       *
       * @private
       * @constructor
       * @param {Array} [entries] The key-value pairs to cache.
       */
      function Hash(entries) {
        var index = -1,
            length = entries == null ? 0 : entries.length;
  
        this.clear();
        while (++index < length) {
          var entry = entries[index];
          this.set(entry[0], entry[1]);
        }
      }
  
      /**
       * Removes all key-value entries from the hash.
       *
       * @private
       * @name clear
       * @memberOf Hash
       */
      function hashClear() {
        this.__data__ = nativeCreate ? nativeCreate(null) : {};
        this.size = 0;
      }
  
      /**
       * Removes `key` and its value from the hash.
       *
       * @private
       * @name delete
       * @memberOf Hash
       * @param {Object} hash The hash to modify.
       * @param {string} key The key of the value to remove.
       * @returns {boolean} Returns `true` if the entry was removed, else `false`.
       */
      function hashDelete(key) {
        var result = this.has(key) && delete this.__data__[key];
        this.size -= result ? 1 : 0;
        return result;
      }
  
      /**
       * Gets the hash value for `key`.
       *
       * @private
       * @name get
       * @memberOf Hash
       * @param {string} key The key of the value to get.
       * @returns {*} Returns the entry value.
       */
      function hashGet(key) {
        var data = this.__data__;
        if (nativeCreate) {
          var result = data[key];
          return result === HASH_UNDEFINED ? undefined : result;
        }
        return hasOwnProperty.call(data, key) ? data[key] : undefined;
      }
  
      /**
       * Checks if a hash value for `key` exists.
       *
       * @private
       * @name has
       * @memberOf Hash
       * @param {string} key The key of the entry to check.
       * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
       */
      function hashHas(key) {
        var data = this.__data__;
        return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
      }
  
      /**
       * Sets the hash `key` to `value`.
       *
       * @private
       * @name set
       * @memberOf Hash
       * @param {string} key The key of the value to set.
       * @param {*} value The value to set.
       * @returns {Object} Returns the hash instance.
       */
      function hashSet(key, value) {
        var data = this.__data__;
        this.size += this.has(key) ? 0 : 1;
        data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
        return this;
      }
  
      // Add methods to `Hash`.
      Hash.prototype.clear = hashClear;
      Hash.prototype['delete'] = hashDelete;
      Hash.prototype.get = hashGet;
      Hash.prototype.has = hashHas;
      Hash.prototype.set = hashSet;
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Creates an list cache object.
       *
       * @private
       * @constructor
       * @param {Array} [entries] The key-value pairs to cache.
       */
      function ListCache(entries) {
        var index = -1,
            length = entries == null ? 0 : entries.length;
  
        this.clear();
        while (++index < length) {
          var entry = entries[index];
          this.set(entry[0], entry[1]);
        }
      }
  
      /**
       * Removes all key-value entries from the list cache.
       *
       * @private
       * @name clear
       * @memberOf ListCache
       */
      function listCacheClear() {
        this.__data__ = [];
        this.size = 0;
      }
  
      /**
       * Removes `key` and its value from the list cache.
       *
       * @private
       * @name delete
       * @memberOf ListCache
       * @param {string} key The key of the value to remove.
       * @returns {boolean} Returns `true` if the entry was removed, else `false`.
       */
      function listCacheDelete(key) {
        var data = this.__data__,
            index = assocIndexOf(data, key);
  
        if (index < 0) {
          return false;
        }
        var lastIndex = data.length - 1;
        if (index == lastIndex) {
          data.pop();
        } else {
          splice.call(data, index, 1);
        }
        --this.size;
        return true;
      }
  
      /**
       * Gets the list cache value for `key`.
       *
       * @private
       * @name get
       * @memberOf ListCache
       * @param {string} key The key of the value to get.
       * @returns {*} Returns the entry value.
       */
      function listCacheGet(key) {
        var data = this.__data__,
            index = assocIndexOf(data, key);
  
        return index < 0 ? undefined : data[index][1];
      }
  
      /**
       * Checks if a list cache value for `key` exists.
       *
       * @private
       * @name has
       * @memberOf ListCache
       * @param {string} key The key of the entry to check.
       * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
       */
      function listCacheHas(key) {
        return assocIndexOf(this.__data__, key) > -1;
      }
  
      /**
       * Sets the list cache `key` to `value`.
       *
       * @private
       * @name set
       * @memberOf ListCache
       * @param {string} key The key of the value to set.
       * @param {*} value The value to set.
       * @returns {Object} Returns the list cache instance.
       */
      function listCacheSet(key, value) {
        var data = this.__data__,
            index = assocIndexOf(data, key);
  
        if (index < 0) {
          ++this.size;
          data.push([key, value]);
        } else {
          data[index][1] = value;
        }
        return this;
      }
  
      // Add methods to `ListCache`.
      ListCache.prototype.clear = listCacheClear;
      ListCache.prototype['delete'] = listCacheDelete;
      ListCache.prototype.get = listCacheGet;
      ListCache.prototype.has = listCacheHas;
      ListCache.prototype.set = listCacheSet;
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Creates a map cache object to store key-value pairs.
       *
       * @private
       * @constructor
       * @param {Array} [entries] The key-value pairs to cache.
       */
      function MapCache(entries) {
        var index = -1,
            length = entries == null ? 0 : entries.length;
  
        this.clear();
        while (++index < length) {
          var entry = entries[index];
          this.set(entry[0], entry[1]);
        }
      }
  
      /**
       * Removes all key-value entries from the map.
       *
       * @private
       * @name clear
       * @memberOf MapCache
       */
      function mapCacheClear() {
        this.size = 0;
        this.__data__ = {
          'hash': new Hash,
          'map': new (Map || ListCache),
          'string': new Hash
        };
      }
  
      /**
       * Removes `key` and its value from the map.
       *
       * @private
       * @name delete
       * @memberOf MapCache
       * @param {string} key The key of the value to remove.
       * @returns {boolean} Returns `true` if the entry was removed, else `false`.
       */
      function mapCacheDelete(key) {
        var result = getMapData(this, key)['delete'](key);
        this.size -= result ? 1 : 0;
        return result;
      }
  
      /**
       * Gets the map value for `key`.
       *
       * @private
       * @name get
       * @memberOf MapCache
       * @param {string} key The key of the value to get.
       * @returns {*} Returns the entry value.
       */
      function mapCacheGet(key) {
        return getMapData(this, key).get(key);
      }
  
      /**
       * Checks if a map value for `key` exists.
       *
       * @private
       * @name has
       * @memberOf MapCache
       * @param {string} key The key of the entry to check.
       * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
       */
      function mapCacheHas(key) {
        return getMapData(this, key).has(key);
      }
  
      /**
       * Sets the map `key` to `value`.
       *
       * @private
       * @name set
       * @memberOf MapCache
       * @param {string} key The key of the value to set.
       * @param {*} value The value to set.
       * @returns {Object} Returns the map cache instance.
       */
      function mapCacheSet(key, value) {
        var data = getMapData(this, key),
            size = data.size;
  
        data.set(key, value);
        this.size += data.size == size ? 0 : 1;
        return this;
      }
  
      // Add methods to `MapCache`.
      MapCache.prototype.clear = mapCacheClear;
      MapCache.prototype['delete'] = mapCacheDelete;
      MapCache.prototype.get = mapCacheGet;
      MapCache.prototype.has = mapCacheHas;
      MapCache.prototype.set = mapCacheSet;
  
      /*------------------------------------------------------------------------*/
  
      /**
       *
       * Creates an array cache object to store unique values.
       *
       * @private
       * @constructor
       * @param {Array} [values] The values to cache.
       */
      function SetCache(values) {
        var index = -1,
            length = values == null ? 0 : values.length;
  
        this.__data__ = new MapCache;
        while (++index < length) {
          this.add(values[index]);
        }
      }
  
      /**
       * Adds `value` to the array cache.
       *
       * @private
       * @name add
       * @memberOf SetCache
       * @alias push
       * @param {*} value The value to cache.
       * @returns {Object} Returns the cache instance.
       */
      function setCacheAdd(value) {
        this.__data__.set(value, HASH_UNDEFINED);
        return this;
      }
  
      /**
       * Checks if `value` is in the array cache.
       *
       * @private
       * @name has
       * @memberOf SetCache
       * @param {*} value The value to search for.
       * @returns {number} Returns `true` if `value` is found, else `false`.
       */
      function setCacheHas(value) {
        return this.__data__.has(value);
      }
  
      // Add methods to `SetCache`.
      SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
      SetCache.prototype.has = setCacheHas;
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Creates a stack cache object to store key-value pairs.
       *
       * @private
       * @constructor
       * @param {Array} [entries] The key-value pairs to cache.
       */
      function Stack(entries) {
        var data = this.__data__ = new ListCache(entries);
        this.size = data.size;
      }
  
      /**
       * Removes all key-value entries from the stack.
       *
       * @private
       * @name clear
       * @memberOf Stack
       */
      function stackClear() {
        this.__data__ = new ListCache;
        this.size = 0;
      }
  
      /**
       * Removes `key` and its value from the stack.
       *
       * @private
       * @name delete
       * @memberOf Stack
       * @param {string} key The key of the value to remove.
       * @returns {boolean} Returns `true` if the entry was removed, else `false`.
       */
      function stackDelete(key) {
        var data = this.__data__,
            result = data['delete'](key);
  
        this.size = data.size;
        return result;
      }
  
      /**
       * Gets the stack value for `key`.
       *
       * @private
       * @name get
       * @memberOf Stack
       * @param {string} key The key of the value to get.
       * @returns {*} Returns the entry value.
       */
      function stackGet(key) {
        return this.__data__.get(key);
      }
  
      /**
       * Checks if a stack value for `key` exists.
       *
       * @private
       * @name has
       * @memberOf Stack
       * @param {string} key The key of the entry to check.
       * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
       */
      function stackHas(key) {
        return this.__data__.has(key);
      }
  
      /**
       * Sets the stack `key` to `value`.
       *
       * @private
       * @name set
       * @memberOf Stack
       * @param {string} key The key of the value to set.
       * @param {*} value The value to set.
       * @returns {Object} Returns the stack cache instance.
       */
      function stackSet(key, value) {
        var data = this.__data__;
        if (data instanceof ListCache) {
          var pairs = data.__data__;
          if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
            pairs.push([key, value]);
            this.size = ++data.size;
            return this;
          }
          data = this.__data__ = new MapCache(pairs);
        }
        data.set(key, value);
        this.size = data.size;
        return this;
      }
  
      // Add methods to `Stack`.
      Stack.prototype.clear = stackClear;
      Stack.prototype['delete'] = stackDelete;
      Stack.prototype.get = stackGet;
      Stack.prototype.has = stackHas;
      Stack.prototype.set = stackSet;
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Creates an array of the enumerable property names of the array-like `value`.
       *
       * @private
       * @param {*} value The value to query.
       * @param {boolean} inherited Specify returning inherited property names.
       * @returns {Array} Returns the array of property names.
       */
      function arrayLikeKeys(value, inherited) {
        var isArr = isArray(value),
            isArg = !isArr && isArguments(value),
            isBuff = !isArr && !isArg && isBuffer(value),
            isType = !isArr && !isArg && !isBuff && isTypedArray(value),
            skipIndexes = isArr || isArg || isBuff || isType,
            result = skipIndexes ? baseTimes(value.length, String) : [],
            length = result.length;
  
        for (var key in value) {
          if ((inherited || hasOwnProperty.call(value, key)) &&
              !(skipIndexes && (
                 // Safari 9 has enumerable `arguments.length` in strict mode.
                 key == 'length' ||
                 // Node.js 0.10 has enumerable non-index properties on buffers.
                 (isBuff && (key == 'offset' || key == 'parent')) ||
                 // PhantomJS 2 has enumerable non-index properties on typed arrays.
                 (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
                 // Skip index properties.
                 isIndex(key, length)
              ))) {
            result.push(key);
          }
        }
        return result;
      }
  
      /**
       * A specialized version of `_.sample` for arrays.
       *
       * @private
       * @param {Array} array The array to sample.
       * @returns {*} Returns the random element.
       */
      function arraySample(array) {
        var length = array.length;
        return length ? array[baseRandom(0, length - 1)] : undefined;
      }
  
      /**
       * A specialized version of `_.sampleSize` for arrays.
       *
       * @private
       * @param {Array} array The array to sample.
       * @param {number} n The number of elements to sample.
       * @returns {Array} Returns the random elements.
       */
      function arraySampleSize(array, n) {
        return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
      }
  
      /**
       * A specialized version of `_.shuffle` for arrays.
       *
       * @private
       * @param {Array} array The array to shuffle.
       * @returns {Array} Returns the new shuffled array.
       */
      function arrayShuffle(array) {
        return shuffleSelf(copyArray(array));
      }
  
      /**
       * This function is like `assignValue` except that it doesn't assign
       * `undefined` values.
       *
       * @private
       * @param {Object} object The object to modify.
       * @param {string} key The key of the property to assign.
       * @param {*} value The value to assign.
       */
      function assignMergeValue(object, key, value) {
        if ((value !== undefined && !eq(object[key], value)) ||
            (value === undefined && !(key in object))) {
          baseAssignValue(object, key, value);
        }
      }
  
      /**
       * Assigns `value` to `key` of `object` if the existing value is not equivalent
       * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
       * for equality comparisons.
       *
       * @private
       * @param {Object} object The object to modify.
       * @param {string} key The key of the property to assign.
       * @param {*} value The value to assign.
       */
      function assignValue(object, key, value) {
        var objValue = object[key];
        if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
            (value === undefined && !(key in object))) {
          baseAssignValue(object, key, value);
        }
      }
  
      /**
       * Gets the index at which the `key` is found in `array` of key-value pairs.
       *
       * @private
       * @param {Array} array The array to inspect.
       * @param {*} key The key to search for.
       * @returns {number} Returns the index of the matched value, else `-1`.
       */
      function assocIndexOf(array, key) {
        var length = array.length;
        while (length--) {
          if (eq(array[length][0], key)) {
            return length;
          }
        }
        return -1;
      }
  
      /**
       * Aggregates elements of `collection` on `accumulator` with keys transformed
       * by `iteratee` and values set by `setter`.
       *
       * @private
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} setter The function to set `accumulator` values.
       * @param {Function} iteratee The iteratee to transform keys.
       * @param {Object} accumulator The initial aggregated object.
       * @returns {Function} Returns `accumulator`.
       */
      function baseAggregator(collection, setter, iteratee, accumulator) {
        baseEach(collection, function(value, key, collection) {
          setter(accumulator, value, iteratee(value), collection);
        });
        return accumulator;
      }
  
      /**
       * The base implementation of `_.assign` without support for multiple sources
       * or `customizer` functions.
       *
       * @private
       * @param {Object} object The destination object.
       * @param {Object} source The source object.
       * @returns {Object} Returns `object`.
       */
      function baseAssign(object, source) {
        return object && copyObject(source, keys(source), object);
      }
  
      /**
       * The base implementation of `_.assignIn` without support for multiple sources
       * or `customizer` functions.
       *
       * @private
       * @param {Object} object The destination object.
       * @param {Object} source The source object.
       * @returns {Object} Returns `object`.
       */
      function baseAssignIn(object, source) {
        return object && copyObject(source, keysIn(source), object);
      }
  
      /**
       * The base implementation of `assignValue` and `assignMergeValue` without
       * value checks.
       *
       * @private
       * @param {Object} object The object to modify.
       * @param {string} key The key of the property to assign.
       * @param {*} value The value to assign.
       */
      function baseAssignValue(object, key, value) {
        if (key == '__proto__' && defineProperty) {
          defineProperty(object, key, {
            'configurable': true,
            'enumerable': true,
            'value': value,
            'writable': true
          });
        } else {
          object[key] = value;
        }
      }
  
      /**
       * The base implementation of `_.at` without support for individual paths.
       *
       * @private
       * @param {Object} object The object to iterate over.
       * @param {string[]} paths The property paths to pick.
       * @returns {Array} Returns the picked elements.
       */
      function baseAt(object, paths) {
        var index = -1,
            length = paths.length,
            result = Array(length),
            skip = object == null;
  
        while (++index < length) {
          result[index] = skip ? undefined : get(object, paths[index]);
        }
        return result;
      }
  
      /**
       * The base implementation of `_.clamp` which doesn't coerce arguments.
       *
       * @private
       * @param {number} number The number to clamp.
       * @param {number} [lower] The lower bound.
       * @param {number} upper The upper bound.
       * @returns {number} Returns the clamped number.
       */
      function baseClamp(number, lower, upper) {
        if (number === number) {
          if (upper !== undefined) {
            number = number <= upper ? number : upper;
          }
          if (lower !== undefined) {
            number = number >= lower ? number : lower;
          }
        }
        return number;
      }
  
      /**
       * The base implementation of `_.clone` and `_.cloneDeep` which tracks
       * traversed objects.
       *
       * @private
       * @param {*} value The value to clone.
       * @param {boolean} bitmask The bitmask flags.
       *  1 - Deep clone
       *  2 - Flatten inherited properties
       *  4 - Clone symbols
       * @param {Function} [customizer] The function to customize cloning.
       * @param {string} [key] The key of `value`.
       * @param {Object} [object] The parent object of `value`.
       * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
       * @returns {*} Returns the cloned value.
       */
      function baseClone(value, bitmask, customizer, key, object, stack) {
        var result,
            isDeep = bitmask & CLONE_DEEP_FLAG,
            isFlat = bitmask & CLONE_FLAT_FLAG,
            isFull = bitmask & CLONE_SYMBOLS_FLAG;
  
        if (customizer) {
          result = object ? customizer(value, key, object, stack) : customizer(value);
        }
        if (result !== undefined) {
          return result;
        }
        if (!isObject(value)) {
          return value;
        }
        var isArr = isArray(value);
        if (isArr) {
          result = initCloneArray(value);
          if (!isDeep) {
            return copyArray(value, result);
          }
        } else {
          var tag = getTag(value),
              isFunc = tag == funcTag || tag == genTag;
  
          if (isBuffer(value)) {
            return cloneBuffer(value, isDeep);
          }
          if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
            result = (isFlat || isFunc) ? {} : initCloneObject(value);
            if (!isDeep) {
              return isFlat
                ? copySymbolsIn(value, baseAssignIn(result, value))
                : copySymbols(value, baseAssign(result, value));
            }
          } else {
            if (!cloneableTags[tag]) {
              return object ? value : {};
            }
            result = initCloneByTag(value, tag, isDeep);
          }
        }
        // Check for circular references and return its corresponding clone.
        stack || (stack = new Stack);
        var stacked = stack.get(value);
        if (stacked) {
          return stacked;
        }
        stack.set(value, result);
  
        if (isSet(value)) {
          value.forEach(function(subValue) {
            result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
          });
        } else if (isMap(value)) {
          value.forEach(function(subValue, key) {
            result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
          });
        }
  
        var keysFunc = isFull
          ? (isFlat ? getAllKeysIn : getAllKeys)
          : (isFlat ? keysIn : keys);
  
        var props = isArr ? undefined : keysFunc(value);
        arrayEach(props || value, function(subValue, key) {
          if (props) {
            key = subValue;
            subValue = value[key];
          }
          // Recursively populate clone (susceptible to call stack limits).
          assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
        });
        return result;
      }
  
      /**
       * The base implementation of `_.conforms` which doesn't clone `source`.
       *
       * @private
       * @param {Object} source The object of property predicates to conform to.
       * @returns {Function} Returns the new spec function.
       */
      function baseConforms(source) {
        var props = keys(source);
        return function(object) {
          return baseConformsTo(object, source, props);
        };
      }
  
      /**
       * The base implementation of `_.conformsTo` which accepts `props` to check.
       *
       * @private
       * @param {Object} object The object to inspect.
       * @param {Object} source The object of property predicates to conform to.
       * @returns {boolean} Returns `true` if `object` conforms, else `false`.
       */
      function baseConformsTo(object, source, props) {
        var length = props.length;
        if (object == null) {
          return !length;
        }
        object = Object(object);
        while (length--) {
          var key = props[length],
              predicate = source[key],
              value = object[key];
  
          if ((value === undefined && !(key in object)) || !predicate(value)) {
            return false;
          }
        }
        return true;
      }
  
      /**
       * The base implementation of `_.delay` and `_.defer` which accepts `args`
       * to provide to `func`.
       *
       * @private
       * @param {Function} func The function to delay.
       * @param {number} wait The number of milliseconds to delay invocation.
       * @param {Array} args The arguments to provide to `func`.
       * @returns {number|Object} Returns the timer id or timeout object.
       */
      function baseDelay(func, wait, args) {
        if (typeof func != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        return setTimeout(function() { func.apply(undefined, args); }, wait);
      }
  
      /**
       * The base implementation of methods like `_.difference` without support
       * for excluding multiple arrays or iteratee shorthands.
       *
       * @private
       * @param {Array} array The array to inspect.
       * @param {Array} values The values to exclude.
       * @param {Function} [iteratee] The iteratee invoked per element.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns the new array of filtered values.
       */
      function baseDifference(array, values, iteratee, comparator) {
        var index = -1,
            includes = arrayIncludes,
            isCommon = true,
            length = array.length,
            result = [],
            valuesLength = values.length;
  
        if (!length) {
          return result;
        }
        if (iteratee) {
          values = arrayMap(values, baseUnary(iteratee));
        }
        if (comparator) {
          includes = arrayIncludesWith;
          isCommon = false;
        }
        else if (values.length >= LARGE_ARRAY_SIZE) {
          includes = cacheHas;
          isCommon = false;
          values = new SetCache(values);
        }
        outer:
        while (++index < length) {
          var value = array[index],
              computed = iteratee == null ? value : iteratee(value);
  
          value = (comparator || value !== 0) ? value : 0;
          if (isCommon && computed === computed) {
            var valuesIndex = valuesLength;
            while (valuesIndex--) {
              if (values[valuesIndex] === computed) {
                continue outer;
              }
            }
            result.push(value);
          }
          else if (!includes(values, computed, comparator)) {
            result.push(value);
          }
        }
        return result;
      }
  
      /**
       * The base implementation of `_.forEach` without support for iteratee shorthands.
       *
       * @private
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} iteratee The function invoked per iteration.
       * @returns {Array|Object} Returns `collection`.
       */
      var baseEach = createBaseEach(baseForOwn);
  
      /**
       * The base implementation of `_.forEachRight` without support for iteratee shorthands.
       *
       * @private
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} iteratee The function invoked per iteration.
       * @returns {Array|Object} Returns `collection`.
       */
      var baseEachRight = createBaseEach(baseForOwnRight, true);
  
      /**
       * The base implementation of `_.every` without support for iteratee shorthands.
       *
       * @private
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} predicate The function invoked per iteration.
       * @returns {boolean} Returns `true` if all elements pass the predicate check,
       *  else `false`
       */
      function baseEvery(collection, predicate) {
        var result = true;
        baseEach(collection, function(value, index, collection) {
          result = !!predicate(value, index, collection);
          return result;
        });
        return result;
      }
  
      /**
       * The base implementation of methods like `_.max` and `_.min` which accepts a
       * `comparator` to determine the extremum value.
       *
       * @private
       * @param {Array} array The array to iterate over.
       * @param {Function} iteratee The iteratee invoked per iteration.
       * @param {Function} comparator The comparator used to compare values.
       * @returns {*} Returns the extremum value.
       */
      function baseExtremum(array, iteratee, comparator) {
        var index = -1,
            length = array.length;
  
        while (++index < length) {
          var value = array[index],
              current = iteratee(value);
  
          if (current != null && (computed === undefined
                ? (current === current && !isSymbol(current))
                : comparator(current, computed)
              )) {
            var computed = current,
                result = value;
          }
        }
        return result;
      }
  
      /**
       * The base implementation of `_.fill` without an iteratee call guard.
       *
       * @private
       * @param {Array} array The array to fill.
       * @param {*} value The value to fill `array` with.
       * @param {number} [start=0] The start position.
       * @param {number} [end=array.length] The end position.
       * @returns {Array} Returns `array`.
       */
      function baseFill(array, value, start, end) {
        var length = array.length;
  
        start = toInteger(start);
        if (start < 0) {
          start = -start > length ? 0 : (length + start);
        }
        end = (end === undefined || end > length) ? length : toInteger(end);
        if (end < 0) {
          end += length;
        }
        end = start > end ? 0 : toLength(end);
        while (start < end) {
          array[start++] = value;
        }
        return array;
      }
  
      /**
       * The base implementation of `_.filter` without support for iteratee shorthands.
       *
       * @private
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} predicate The function invoked per iteration.
       * @returns {Array} Returns the new filtered array.
       */
      function baseFilter(collection, predicate) {
        var result = [];
        baseEach(collection, function(value, index, collection) {
          if (predicate(value, index, collection)) {
            result.push(value);
          }
        });
        return result;
      }
  
      /**
       * The base implementation of `_.flatten` with support for restricting flattening.
       *
       * @private
       * @param {Array} array The array to flatten.
       * @param {number} depth The maximum recursion depth.
       * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
       * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
       * @param {Array} [result=[]] The initial result value.
       * @returns {Array} Returns the new flattened array.
       */
      function baseFlatten(array, depth, predicate, isStrict, result) {
        var index = -1,
            length = array.length;
  
        predicate || (predicate = isFlattenable);
        result || (result = []);
  
        while (++index < length) {
          var value = array[index];
          if (depth > 0 && predicate(value)) {
            if (depth > 1) {
              // Recursively flatten arrays (susceptible to call stack limits).
              baseFlatten(value, depth - 1, predicate, isStrict, result);
            } else {
              arrayPush(result, value);
            }
          } else if (!isStrict) {
            result[result.length] = value;
          }
        }
        return result;
      }
  
      /**
       * The base implementation of `baseForOwn` which iterates over `object`
       * properties returned by `keysFunc` and invokes `iteratee` for each property.
       * Iteratee functions may exit iteration early by explicitly returning `false`.
       *
       * @private
       * @param {Object} object The object to iterate over.
       * @param {Function} iteratee The function invoked per iteration.
       * @param {Function} keysFunc The function to get the keys of `object`.
       * @returns {Object} Returns `object`.
       */
      var baseFor = createBaseFor();
  
      /**
       * This function is like `baseFor` except that it iterates over properties
       * in the opposite order.
       *
       * @private
       * @param {Object} object The object to iterate over.
       * @param {Function} iteratee The function invoked per iteration.
       * @param {Function} keysFunc The function to get the keys of `object`.
       * @returns {Object} Returns `object`.
       */
      var baseForRight = createBaseFor(true);
  
      /**
       * The base implementation of `_.forOwn` without support for iteratee shorthands.
       *
       * @private
       * @param {Object} object The object to iterate over.
       * @param {Function} iteratee The function invoked per iteration.
       * @returns {Object} Returns `object`.
       */
      function baseForOwn(object, iteratee) {
        return object && baseFor(object, iteratee, keys);
      }
  
      /**
       * The base implementation of `_.forOwnRight` without support for iteratee shorthands.
       *
       * @private
       * @param {Object} object The object to iterate over.
       * @param {Function} iteratee The function invoked per iteration.
       * @returns {Object} Returns `object`.
       */
      function baseForOwnRight(object, iteratee) {
        return object && baseForRight(object, iteratee, keys);
      }
  
      /**
       * The base implementation of `_.functions` which creates an array of
       * `object` function property names filtered from `props`.
       *
       * @private
       * @param {Object} object The object to inspect.
       * @param {Array} props The property names to filter.
       * @returns {Array} Returns the function names.
       */
      function baseFunctions(object, props) {
        return arrayFilter(props, function(key) {
          return isFunction(object[key]);
        });
      }
  
      /**
       * The base implementation of `_.get` without support for default values.
       *
       * @private
       * @param {Object} object The object to query.
       * @param {Array|string} path The path of the property to get.
       * @returns {*} Returns the resolved value.
       */
      function baseGet(object, path) {
        path = castPath(path, object);
  
        var index = 0,
            length = path.length;
  
        while (object != null && index < length) {
          object = object[toKey(path[index++])];
        }
        return (index && index == length) ? object : undefined;
      }
  
      /**
       * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
       * `keysFunc` and `symbolsFunc` to get the enumerable property names and
       * symbols of `object`.
       *
       * @private
       * @param {Object} object The object to query.
       * @param {Function} keysFunc The function to get the keys of `object`.
       * @param {Function} symbolsFunc The function to get the symbols of `object`.
       * @returns {Array} Returns the array of property names and symbols.
       */
      function baseGetAllKeys(object, keysFunc, symbolsFunc) {
        var result = keysFunc(object);
        return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
      }
  
      /**
       * The base implementation of `getTag` without fallbacks for buggy environments.
       *
       * @private
       * @param {*} value The value to query.
       * @returns {string} Returns the `toStringTag`.
       */
      function baseGetTag(value) {
        if (value == null) {
          return value === undefined ? undefinedTag : nullTag;
        }
        return (symToStringTag && symToStringTag in Object(value))
          ? getRawTag(value)
          : objectToString(value);
      }
  
      /**
       * The base implementation of `_.gt` which doesn't coerce arguments.
       *
       * @private
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @returns {boolean} Returns `true` if `value` is greater than `other`,
       *  else `false`.
       */
      function baseGt(value, other) {
        return value > other;
      }
  
      /**
       * The base implementation of `_.has` without support for deep paths.
       *
       * @private
       * @param {Object} [object] The object to query.
       * @param {Array|string} key The key to check.
       * @returns {boolean} Returns `true` if `key` exists, else `false`.
       */
      function baseHas(object, key) {
        return object != null && hasOwnProperty.call(object, key);
      }
  
      /**
       * The base implementation of `_.hasIn` without support for deep paths.
       *
       * @private
       * @param {Object} [object] The object to query.
       * @param {Array|string} key The key to check.
       * @returns {boolean} Returns `true` if `key` exists, else `false`.
       */
      function baseHasIn(object, key) {
        return object != null && key in Object(object);
      }
  
      /**
       * The base implementation of `_.inRange` which doesn't coerce arguments.
       *
       * @private
       * @param {number} number The number to check.
       * @param {number} start The start of the range.
       * @param {number} end The end of the range.
       * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
       */
      function baseInRange(number, start, end) {
        return number >= nativeMin(start, end) && number < nativeMax(start, end);
      }
  
      /**
       * The base implementation of methods like `_.intersection`, without support
       * for iteratee shorthands, that accepts an array of arrays to inspect.
       *
       * @private
       * @param {Array} arrays The arrays to inspect.
       * @param {Function} [iteratee] The iteratee invoked per element.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns the new array of shared values.
       */
      function baseIntersection(arrays, iteratee, comparator) {
        var includes = comparator ? arrayIncludesWith : arrayIncludes,
            length = arrays[0].length,
            othLength = arrays.length,
            othIndex = othLength,
            caches = Array(othLength),
            maxLength = Infinity,
            result = [];
  
        while (othIndex--) {
          var array = arrays[othIndex];
          if (othIndex && iteratee) {
            array = arrayMap(array, baseUnary(iteratee));
          }
          maxLength = nativeMin(array.length, maxLength);
          caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))
            ? new SetCache(othIndex && array)
            : undefined;
        }
        array = arrays[0];
  
        var index = -1,
            seen = caches[0];
  
        outer:
        while (++index < length && result.length < maxLength) {
          var value = array[index],
              computed = iteratee ? iteratee(value) : value;
  
          value = (comparator || value !== 0) ? value : 0;
          if (!(seen
                ? cacheHas(seen, computed)
                : includes(result, computed, comparator)
              )) {
            othIndex = othLength;
            while (--othIndex) {
              var cache = caches[othIndex];
              if (!(cache
                    ? cacheHas(cache, computed)
                    : includes(arrays[othIndex], computed, comparator))
                  ) {
                continue outer;
              }
            }
            if (seen) {
              seen.push(computed);
            }
            result.push(value);
          }
        }
        return result;
      }
  
      /**
       * The base implementation of `_.invert` and `_.invertBy` which inverts
       * `object` with values transformed by `iteratee` and set by `setter`.
       *
       * @private
       * @param {Object} object The object to iterate over.
       * @param {Function} setter The function to set `accumulator` values.
       * @param {Function} iteratee The iteratee to transform values.
       * @param {Object} accumulator The initial inverted object.
       * @returns {Function} Returns `accumulator`.
       */
      function baseInverter(object, setter, iteratee, accumulator) {
        baseForOwn(object, function(value, key, object) {
          setter(accumulator, iteratee(value), key, object);
        });
        return accumulator;
      }
  
      /**
       * The base implementation of `_.invoke` without support for individual
       * method arguments.
       *
       * @private
       * @param {Object} object The object to query.
       * @param {Array|string} path The path of the method to invoke.
       * @param {Array} args The arguments to invoke the method with.
       * @returns {*} Returns the result of the invoked method.
       */
      function baseInvoke(object, path, args) {
        path = castPath(path, object);
        object = parent(object, path);
        var func = object == null ? object : object[toKey(last(path))];
        return func == null ? undefined : apply(func, object, args);
      }
  
      /**
       * The base implementation of `_.isArguments`.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is an `arguments` object,
       */
      function baseIsArguments(value) {
        return isObjectLike(value) && baseGetTag(value) == argsTag;
      }
  
      /**
       * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
       */
      function baseIsArrayBuffer(value) {
        return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
      }
  
      /**
       * The base implementation of `_.isDate` without Node.js optimizations.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
       */
      function baseIsDate(value) {
        return isObjectLike(value) && baseGetTag(value) == dateTag;
      }
  
      /**
       * The base implementation of `_.isEqual` which supports partial comparisons
       * and tracks traversed objects.
       *
       * @private
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @param {boolean} bitmask The bitmask flags.
       *  1 - Unordered comparison
       *  2 - Partial comparison
       * @param {Function} [customizer] The function to customize comparisons.
       * @param {Object} [stack] Tracks traversed `value` and `other` objects.
       * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
       */
      function baseIsEqual(value, other, bitmask, customizer, stack) {
        if (value === other) {
          return true;
        }
        if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
          return value !== value && other !== other;
        }
        return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
      }
  
      /**
       * A specialized version of `baseIsEqual` for arrays and objects which performs
       * deep comparisons and tracks traversed objects enabling objects with circular
       * references to be compared.
       *
       * @private
       * @param {Object} object The object to compare.
       * @param {Object} other The other object to compare.
       * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
       * @param {Function} customizer The function to customize comparisons.
       * @param {Function} equalFunc The function to determine equivalents of values.
       * @param {Object} [stack] Tracks traversed `object` and `other` objects.
       * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
       */
      function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
        var objIsArr = isArray(object),
            othIsArr = isArray(other),
            objTag = objIsArr ? arrayTag : getTag(object),
            othTag = othIsArr ? arrayTag : getTag(other);
  
        objTag = objTag == argsTag ? objectTag : objTag;
        othTag = othTag == argsTag ? objectTag : othTag;
  
        var objIsObj = objTag == objectTag,
            othIsObj = othTag == objectTag,
            isSameTag = objTag == othTag;
  
        if (isSameTag && isBuffer(object)) {
          if (!isBuffer(other)) {
            return false;
          }
          objIsArr = true;
          objIsObj = false;
        }
        if (isSameTag && !objIsObj) {
          stack || (stack = new Stack);
          return (objIsArr || isTypedArray(object))
            ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
            : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
        }
        if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
          var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
              othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
  
          if (objIsWrapped || othIsWrapped) {
            var objUnwrapped = objIsWrapped ? object.value() : object,
                othUnwrapped = othIsWrapped ? other.value() : other;
  
            stack || (stack = new Stack);
            return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
          }
        }
        if (!isSameTag) {
          return false;
        }
        stack || (stack = new Stack);
        return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
      }
  
      /**
       * The base implementation of `_.isMap` without Node.js optimizations.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a map, else `false`.
       */
      function baseIsMap(value) {
        return isObjectLike(value) && getTag(value) == mapTag;
      }
  
      /**
       * The base implementation of `_.isMatch` without support for iteratee shorthands.
       *
       * @private
       * @param {Object} object The object to inspect.
       * @param {Object} source The object of property values to match.
       * @param {Array} matchData The property names, values, and compare flags to match.
       * @param {Function} [customizer] The function to customize comparisons.
       * @returns {boolean} Returns `true` if `object` is a match, else `false`.
       */
      function baseIsMatch(object, source, matchData, customizer) {
        var index = matchData.length,
            length = index,
            noCustomizer = !customizer;
  
        if (object == null) {
          return !length;
        }
        object = Object(object);
        while (index--) {
          var data = matchData[index];
          if ((noCustomizer && data[2])
                ? data[1] !== object[data[0]]
                : !(data[0] in object)
              ) {
            return false;
          }
        }
        while (++index < length) {
          data = matchData[index];
          var key = data[0],
              objValue = object[key],
              srcValue = data[1];
  
          if (noCustomizer && data[2]) {
            if (objValue === undefined && !(key in object)) {
              return false;
            }
          } else {
            var stack = new Stack;
            if (customizer) {
              var result = customizer(objValue, srcValue, key, object, source, stack);
            }
            if (!(result === undefined
                  ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
                  : result
                )) {
              return false;
            }
          }
        }
        return true;
      }
  
      /**
       * The base implementation of `_.isNative` without bad shim checks.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a native function,
       *  else `false`.
       */
      function baseIsNative(value) {
        if (!isObject(value) || isMasked(value)) {
          return false;
        }
        var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
        return pattern.test(toSource(value));
      }
  
      /**
       * The base implementation of `_.isRegExp` without Node.js optimizations.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
       */
      function baseIsRegExp(value) {
        return isObjectLike(value) && baseGetTag(value) == regexpTag;
      }
  
      /**
       * The base implementation of `_.isSet` without Node.js optimizations.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a set, else `false`.
       */
      function baseIsSet(value) {
        return isObjectLike(value) && getTag(value) == setTag;
      }
  
      /**
       * The base implementation of `_.isTypedArray` without Node.js optimizations.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
       */
      function baseIsTypedArray(value) {
        return isObjectLike(value) &&
          isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
      }
  
      /**
       * The base implementation of `_.iteratee`.
       *
       * @private
       * @param {*} [value=_.identity] The value to convert to an iteratee.
       * @returns {Function} Returns the iteratee.
       */
      function baseIteratee(value) {
        // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
        // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
        if (typeof value == 'function') {
          return value;
        }
        if (value == null) {
          return identity;
        }
        if (typeof value == 'object') {
          return isArray(value)
            ? baseMatchesProperty(value[0], value[1])
            : baseMatches(value);
        }
        return property(value);
      }
  
      /**
       * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
       *
       * @private
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of property names.
       */
      function baseKeys(object) {
        if (!isPrototype(object)) {
          return nativeKeys(object);
        }
        var result = [];
        for (var key in Object(object)) {
          if (hasOwnProperty.call(object, key) && key != 'constructor') {
            result.push(key);
          }
        }
        return result;
      }
  
      /**
       * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
       *
       * @private
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of property names.
       */
      function baseKeysIn(object) {
        if (!isObject(object)) {
          return nativeKeysIn(object);
        }
        var isProto = isPrototype(object),
            result = [];
  
        for (var key in object) {
          if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
            result.push(key);
          }
        }
        return result;
      }
  
      /**
       * The base implementation of `_.lt` which doesn't coerce arguments.
       *
       * @private
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @returns {boolean} Returns `true` if `value` is less than `other`,
       *  else `false`.
       */
      function baseLt(value, other) {
        return value < other;
      }
  
      /**
       * The base implementation of `_.map` without support for iteratee shorthands.
       *
       * @private
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} iteratee The function invoked per iteration.
       * @returns {Array} Returns the new mapped array.
       */
      function baseMap(collection, iteratee) {
        var index = -1,
            result = isArrayLike(collection) ? Array(collection.length) : [];
  
        baseEach(collection, function(value, key, collection) {
          result[++index] = iteratee(value, key, collection);
        });
        return result;
      }
  
      /**
       * The base implementation of `_.matches` which doesn't clone `source`.
       *
       * @private
       * @param {Object} source The object of property values to match.
       * @returns {Function} Returns the new spec function.
       */
      function baseMatches(source) {
        var matchData = getMatchData(source);
        if (matchData.length == 1 && matchData[0][2]) {
          return matchesStrictComparable(matchData[0][0], matchData[0][1]);
        }
        return function(object) {
          return object === source || baseIsMatch(object, source, matchData);
        };
      }
  
      /**
       * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
       *
       * @private
       * @param {string} path The path of the property to get.
       * @param {*} srcValue The value to match.
       * @returns {Function} Returns the new spec function.
       */
      function baseMatchesProperty(path, srcValue) {
        if (isKey(path) && isStrictComparable(srcValue)) {
          return matchesStrictComparable(toKey(path), srcValue);
        }
        return function(object) {
          var objValue = get(object, path);
          return (objValue === undefined && objValue === srcValue)
            ? hasIn(object, path)
            : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
        };
      }
  
      /**
       * The base implementation of `_.merge` without support for multiple sources.
       *
       * @private
       * @param {Object} object The destination object.
       * @param {Object} source The source object.
       * @param {number} srcIndex The index of `source`.
       * @param {Function} [customizer] The function to customize merged values.
       * @param {Object} [stack] Tracks traversed source values and their merged
       *  counterparts.
       */
      function baseMerge(object, source, srcIndex, customizer, stack) {
        if (object === source) {
          return;
        }
        baseFor(source, function(srcValue, key) {
          stack || (stack = new Stack);
          if (isObject(srcValue)) {
            baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
          }
          else {
            var newValue = customizer
              ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
              : undefined;
  
            if (newValue === undefined) {
              newValue = srcValue;
            }
            assignMergeValue(object, key, newValue);
          }
        }, keysIn);
      }
  
      /**
       * A specialized version of `baseMerge` for arrays and objects which performs
       * deep merges and tracks traversed objects enabling objects with circular
       * references to be merged.
       *
       * @private
       * @param {Object} object The destination object.
       * @param {Object} source The source object.
       * @param {string} key The key of the value to merge.
       * @param {number} srcIndex The index of `source`.
       * @param {Function} mergeFunc The function to merge values.
       * @param {Function} [customizer] The function to customize assigned values.
       * @param {Object} [stack] Tracks traversed source values and their merged
       *  counterparts.
       */
      function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
        var objValue = safeGet(object, key),
            srcValue = safeGet(source, key),
            stacked = stack.get(srcValue);
  
        if (stacked) {
          assignMergeValue(object, key, stacked);
          return;
        }
        var newValue = customizer
          ? customizer(objValue, srcValue, (key + ''), object, source, stack)
          : undefined;
  
        var isCommon = newValue === undefined;
  
        if (isCommon) {
          var isArr = isArray(srcValue),
              isBuff = !isArr && isBuffer(srcValue),
              isTyped = !isArr && !isBuff && isTypedArray(srcValue);
  
          newValue = srcValue;
          if (isArr || isBuff || isTyped) {
            if (isArray(objValue)) {
              newValue = objValue;
            }
            else if (isArrayLikeObject(objValue)) {
              newValue = copyArray(objValue);
            }
            else if (isBuff) {
              isCommon = false;
              newValue = cloneBuffer(srcValue, true);
            }
            else if (isTyped) {
              isCommon = false;
              newValue = cloneTypedArray(srcValue, true);
            }
            else {
              newValue = [];
            }
          }
          else if (isPlainObject(srcValue) || isArguments(srcValue)) {
            newValue = objValue;
            if (isArguments(objValue)) {
              newValue = toPlainObject(objValue);
            }
            else if (!isObject(objValue) || isFunction(objValue)) {
              newValue = initCloneObject(srcValue);
            }
          }
          else {
            isCommon = false;
          }
        }
        if (isCommon) {
          // Recursively merge objects and arrays (susceptible to call stack limits).
          stack.set(srcValue, newValue);
          mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
          stack['delete'](srcValue);
        }
        assignMergeValue(object, key, newValue);
      }
  
      /**
       * The base implementation of `_.nth` which doesn't coerce arguments.
       *
       * @private
       * @param {Array} array The array to query.
       * @param {number} n The index of the element to return.
       * @returns {*} Returns the nth element of `array`.
       */
      function baseNth(array, n) {
        var length = array.length;
        if (!length) {
          return;
        }
        n += n < 0 ? length : 0;
        return isIndex(n, length) ? array[n] : undefined;
      }
  
      /**
       * The base implementation of `_.orderBy` without param guards.
       *
       * @private
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
       * @param {string[]} orders The sort orders of `iteratees`.
       * @returns {Array} Returns the new sorted array.
       */
      function baseOrderBy(collection, iteratees, orders) {
        if (iteratees.length) {
          iteratees = arrayMap(iteratees, function(iteratee) {
            if (isArray(iteratee)) {
              return function(value) {
                return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);
              }
            }
            return iteratee;
          });
        } else {
          iteratees = [identity];
        }
  
        var index = -1;
        iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
  
        var result = baseMap(collection, function(value, key, collection) {
          var criteria = arrayMap(iteratees, function(iteratee) {
            return iteratee(value);
          });
          return { 'criteria': criteria, 'index': ++index, 'value': value };
        });
  
        return baseSortBy(result, function(object, other) {
          return compareMultiple(object, other, orders);
        });
      }
  
      /**
       * The base implementation of `_.pick` without support for individual
       * property identifiers.
       *
       * @private
       * @param {Object} object The source object.
       * @param {string[]} paths The property paths to pick.
       * @returns {Object} Returns the new object.
       */
      function basePick(object, paths) {
        return basePickBy(object, paths, function(value, path) {
          return hasIn(object, path);
        });
      }
  
      /**
       * The base implementation of  `_.pickBy` without support for iteratee shorthands.
       *
       * @private
       * @param {Object} object The source object.
       * @param {string[]} paths The property paths to pick.
       * @param {Function} predicate The function invoked per property.
       * @returns {Object} Returns the new object.
       */
      function basePickBy(object, paths, predicate) {
        var index = -1,
            length = paths.length,
            result = {};
  
        while (++index < length) {
          var path = paths[index],
              value = baseGet(object, path);
  
          if (predicate(value, path)) {
            baseSet(result, castPath(path, object), value);
          }
        }
        return result;
      }
  
      /**
       * A specialized version of `baseProperty` which supports deep paths.
       *
       * @private
       * @param {Array|string} path The path of the property to get.
       * @returns {Function} Returns the new accessor function.
       */
      function basePropertyDeep(path) {
        return function(object) {
          return baseGet(object, path);
        };
      }
  
      /**
       * The base implementation of `_.pullAllBy` without support for iteratee
       * shorthands.
       *
       * @private
       * @param {Array} array The array to modify.
       * @param {Array} values The values to remove.
       * @param {Function} [iteratee] The iteratee invoked per element.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns `array`.
       */
      function basePullAll(array, values, iteratee, comparator) {
        var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
            index = -1,
            length = values.length,
            seen = array;
  
        if (array === values) {
          values = copyArray(values);
        }
        if (iteratee) {
          seen = arrayMap(array, baseUnary(iteratee));
        }
        while (++index < length) {
          var fromIndex = 0,
              value = values[index],
              computed = iteratee ? iteratee(value) : value;
  
          while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
            if (seen !== array) {
              splice.call(seen, fromIndex, 1);
            }
            splice.call(array, fromIndex, 1);
          }
        }
        return array;
      }
  
      /**
       * The base implementation of `_.pullAt` without support for individual
       * indexes or capturing the removed elements.
       *
       * @private
       * @param {Array} array The array to modify.
       * @param {number[]} indexes The indexes of elements to remove.
       * @returns {Array} Returns `array`.
       */
      function basePullAt(array, indexes) {
        var length = array ? indexes.length : 0,
            lastIndex = length - 1;
  
        while (length--) {
          var index = indexes[length];
          if (length == lastIndex || index !== previous) {
            var previous = index;
            if (isIndex(index)) {
              splice.call(array, index, 1);
            } else {
              baseUnset(array, index);
            }
          }
        }
        return array;
      }
  
      /**
       * The base implementation of `_.random` without support for returning
       * floating-point numbers.
       *
       * @private
       * @param {number} lower The lower bound.
       * @param {number} upper The upper bound.
       * @returns {number} Returns the random number.
       */
      function baseRandom(lower, upper) {
        return lower + nativeFloor(nativeRandom() * (upper - lower + 1));
      }
  
      /**
       * The base implementation of `_.range` and `_.rangeRight` which doesn't
       * coerce arguments.
       *
       * @private
       * @param {number} start The start of the range.
       * @param {number} end The end of the range.
       * @param {number} step The value to increment or decrement by.
       * @param {boolean} [fromRight] Specify iterating from right to left.
       * @returns {Array} Returns the range of numbers.
       */
      function baseRange(start, end, step, fromRight) {
        var index = -1,
            length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
            result = Array(length);
  
        while (length--) {
          result[fromRight ? length : ++index] = start;
          start += step;
        }
        return result;
      }
  
      /**
       * The base implementation of `_.repeat` which doesn't coerce arguments.
       *
       * @private
       * @param {string} string The string to repeat.
       * @param {number} n The number of times to repeat the string.
       * @returns {string} Returns the repeated string.
       */
      function baseRepeat(string, n) {
        var result = '';
        if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
          return result;
        }
        // Leverage the exponentiation by squaring algorithm for a faster repeat.
        // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
        do {
          if (n % 2) {
            result += string;
          }
          n = nativeFloor(n / 2);
          if (n) {
            string += string;
          }
        } while (n);
  
        return result;
      }
  
      /**
       * The base implementation of `_.rest` which doesn't validate or coerce arguments.
       *
       * @private
       * @param {Function} func The function to apply a rest parameter to.
       * @param {number} [start=func.length-1] The start position of the rest parameter.
       * @returns {Function} Returns the new function.
       */
      function baseRest(func, start) {
        return setToString(overRest(func, start, identity), func + '');
      }
  
      /**
       * The base implementation of `_.sample`.
       *
       * @private
       * @param {Array|Object} collection The collection to sample.
       * @returns {*} Returns the random element.
       */
      function baseSample(collection) {
        return arraySample(values(collection));
      }
  
      /**
       * The base implementation of `_.sampleSize` without param guards.
       *
       * @private
       * @param {Array|Object} collection The collection to sample.
       * @param {number} n The number of elements to sample.
       * @returns {Array} Returns the random elements.
       */
      function baseSampleSize(collection, n) {
        var array = values(collection);
        return shuffleSelf(array, baseClamp(n, 0, array.length));
      }
  
      /**
       * The base implementation of `_.set`.
       *
       * @private
       * @param {Object} object The object to modify.
       * @param {Array|string} path The path of the property to set.
       * @param {*} value The value to set.
       * @param {Function} [customizer] The function to customize path creation.
       * @returns {Object} Returns `object`.
       */
      function baseSet(object, path, value, customizer) {
        if (!isObject(object)) {
          return object;
        }
        path = castPath(path, object);
  
        var index = -1,
            length = path.length,
            lastIndex = length - 1,
            nested = object;
  
        while (nested != null && ++index < length) {
          var key = toKey(path[index]),
              newValue = value;
  
          if (key === '__proto__' || key === 'constructor' || key === 'prototype') {
            return object;
          }
  
          if (index != lastIndex) {
            var objValue = nested[key];
            newValue = customizer ? customizer(objValue, key, nested) : undefined;
            if (newValue === undefined) {
              newValue = isObject(objValue)
                ? objValue
                : (isIndex(path[index + 1]) ? [] : {});
            }
          }
          assignValue(nested, key, newValue);
          nested = nested[key];
        }
        return object;
      }
  
      /**
       * The base implementation of `setData` without support for hot loop shorting.
       *
       * @private
       * @param {Function} func The function to associate metadata with.
       * @param {*} data The metadata.
       * @returns {Function} Returns `func`.
       */
      var baseSetData = !metaMap ? identity : function(func, data) {
        metaMap.set(func, data);
        return func;
      };
  
      /**
       * The base implementation of `setToString` without support for hot loop shorting.
       *
       * @private
       * @param {Function} func The function to modify.
       * @param {Function} string The `toString` result.
       * @returns {Function} Returns `func`.
       */
      var baseSetToString = !defineProperty ? identity : function(func, string) {
        return defineProperty(func, 'toString', {
          'configurable': true,
          'enumerable': false,
          'value': constant(string),
          'writable': true
        });
      };
  
      /**
       * The base implementation of `_.shuffle`.
       *
       * @private
       * @param {Array|Object} collection The collection to shuffle.
       * @returns {Array} Returns the new shuffled array.
       */
      function baseShuffle(collection) {
        return shuffleSelf(values(collection));
      }
  
      /**
       * The base implementation of `_.slice` without an iteratee call guard.
       *
       * @private
       * @param {Array} array The array to slice.
       * @param {number} [start=0] The start position.
       * @param {number} [end=array.length] The end position.
       * @returns {Array} Returns the slice of `array`.
       */
      function baseSlice(array, start, end) {
        var index = -1,
            length = array.length;
  
        if (start < 0) {
          start = -start > length ? 0 : (length + start);
        }
        end = end > length ? length : end;
        if (end < 0) {
          end += length;
        }
        length = start > end ? 0 : ((end - start) >>> 0);
        start >>>= 0;
  
        var result = Array(length);
        while (++index < length) {
          result[index] = array[index + start];
        }
        return result;
      }
  
      /**
       * The base implementation of `_.some` without support for iteratee shorthands.
       *
       * @private
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} predicate The function invoked per iteration.
       * @returns {boolean} Returns `true` if any element passes the predicate check,
       *  else `false`.
       */
      function baseSome(collection, predicate) {
        var result;
  
        baseEach(collection, function(value, index, collection) {
          result = predicate(value, index, collection);
          return !result;
        });
        return !!result;
      }
  
      /**
       * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
       * performs a binary search of `array` to determine the index at which `value`
       * should be inserted into `array` in order to maintain its sort order.
       *
       * @private
       * @param {Array} array The sorted array to inspect.
       * @param {*} value The value to evaluate.
       * @param {boolean} [retHighest] Specify returning the highest qualified index.
       * @returns {number} Returns the index at which `value` should be inserted
       *  into `array`.
       */
      function baseSortedIndex(array, value, retHighest) {
        var low = 0,
            high = array == null ? low : array.length;
  
        if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
          while (low < high) {
            var mid = (low + high) >>> 1,
                computed = array[mid];
  
            if (computed !== null && !isSymbol(computed) &&
                (retHighest ? (computed <= value) : (computed < value))) {
              low = mid + 1;
            } else {
              high = mid;
            }
          }
          return high;
        }
        return baseSortedIndexBy(array, value, identity, retHighest);
      }
  
      /**
       * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
       * which invokes `iteratee` for `value` and each element of `array` to compute
       * their sort ranking. The iteratee is invoked with one argument; (value).
       *
       * @private
       * @param {Array} array The sorted array to inspect.
       * @param {*} value The value to evaluate.
       * @param {Function} iteratee The iteratee invoked per element.
       * @param {boolean} [retHighest] Specify returning the highest qualified index.
       * @returns {number} Returns the index at which `value` should be inserted
       *  into `array`.
       */
      function baseSortedIndexBy(array, value, iteratee, retHighest) {
        var low = 0,
            high = array == null ? 0 : array.length;
        if (high === 0) {
          return 0;
        }
  
        value = iteratee(value);
        var valIsNaN = value !== value,
            valIsNull = value === null,
            valIsSymbol = isSymbol(value),
            valIsUndefined = value === undefined;
  
        while (low < high) {
          var mid = nativeFloor((low + high) / 2),
              computed = iteratee(array[mid]),
              othIsDefined = computed !== undefined,
              othIsNull = computed === null,
              othIsReflexive = computed === computed,
              othIsSymbol = isSymbol(computed);
  
          if (valIsNaN) {
            var setLow = retHighest || othIsReflexive;
          } else if (valIsUndefined) {
            setLow = othIsReflexive && (retHighest || othIsDefined);
          } else if (valIsNull) {
            setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
          } else if (valIsSymbol) {
            setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
          } else if (othIsNull || othIsSymbol) {
            setLow = false;
          } else {
            setLow = retHighest ? (computed <= value) : (computed < value);
          }
          if (setLow) {
            low = mid + 1;
          } else {
            high = mid;
          }
        }
        return nativeMin(high, MAX_ARRAY_INDEX);
      }
  
      /**
       * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
       * support for iteratee shorthands.
       *
       * @private
       * @param {Array} array The array to inspect.
       * @param {Function} [iteratee] The iteratee invoked per element.
       * @returns {Array} Returns the new duplicate free array.
       */
      function baseSortedUniq(array, iteratee) {
        var index = -1,
            length = array.length,
            resIndex = 0,
            result = [];
  
        while (++index < length) {
          var value = array[index],
              computed = iteratee ? iteratee(value) : value;
  
          if (!index || !eq(computed, seen)) {
            var seen = computed;
            result[resIndex++] = value === 0 ? 0 : value;
          }
        }
        return result;
      }
  
      /**
       * The base implementation of `_.toNumber` which doesn't ensure correct
       * conversions of binary, hexadecimal, or octal string values.
       *
       * @private
       * @param {*} value The value to process.
       * @returns {number} Returns the number.
       */
      function baseToNumber(value) {
        if (typeof value == 'number') {
          return value;
        }
        if (isSymbol(value)) {
          return NAN;
        }
        return +value;
      }
  
      /**
       * The base implementation of `_.toString` which doesn't convert nullish
       * values to empty strings.
       *
       * @private
       * @param {*} value The value to process.
       * @returns {string} Returns the string.
       */
      function baseToString(value) {
        // Exit early for strings to avoid a performance hit in some environments.
        if (typeof value == 'string') {
          return value;
        }
        if (isArray(value)) {
          // Recursively convert values (susceptible to call stack limits).
          return arrayMap(value, baseToString) + '';
        }
        if (isSymbol(value)) {
          return symbolToString ? symbolToString.call(value) : '';
        }
        var result = (value + '');
        return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
      }
  
      /**
       * The base implementation of `_.uniqBy` without support for iteratee shorthands.
       *
       * @private
       * @param {Array} array The array to inspect.
       * @param {Function} [iteratee] The iteratee invoked per element.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns the new duplicate free array.
       */
      function baseUniq(array, iteratee, comparator) {
        var index = -1,
            includes = arrayIncludes,
            length = array.length,
            isCommon = true,
            result = [],
            seen = result;
  
        if (comparator) {
          isCommon = false;
          includes = arrayIncludesWith;
        }
        else if (length >= LARGE_ARRAY_SIZE) {
          var set = iteratee ? null : createSet(array);
          if (set) {
            return setToArray(set);
          }
          isCommon = false;
          includes = cacheHas;
          seen = new SetCache;
        }
        else {
          seen = iteratee ? [] : result;
        }
        outer:
        while (++index < length) {
          var value = array[index],
              computed = iteratee ? iteratee(value) : value;
  
          value = (comparator || value !== 0) ? value : 0;
          if (isCommon && computed === computed) {
            var seenIndex = seen.length;
            while (seenIndex--) {
              if (seen[seenIndex] === computed) {
                continue outer;
              }
            }
            if (iteratee) {
              seen.push(computed);
            }
            result.push(value);
          }
          else if (!includes(seen, computed, comparator)) {
            if (seen !== result) {
              seen.push(computed);
            }
            result.push(value);
          }
        }
        return result;
      }
  
      /**
       * The base implementation of `_.unset`.
       *
       * @private
       * @param {Object} object The object to modify.
       * @param {Array|string} path The property path to unset.
       * @returns {boolean} Returns `true` if the property is deleted, else `false`.
       */
      function baseUnset(object, path) {
        path = castPath(path, object);
        object = parent(object, path);
        return object == null || delete object[toKey(last(path))];
      }
  
      /**
       * The base implementation of `_.update`.
       *
       * @private
       * @param {Object} object The object to modify.
       * @param {Array|string} path The path of the property to update.
       * @param {Function} updater The function to produce the updated value.
       * @param {Function} [customizer] The function to customize path creation.
       * @returns {Object} Returns `object`.
       */
      function baseUpdate(object, path, updater, customizer) {
        return baseSet(object, path, updater(baseGet(object, path)), customizer);
      }
  
      /**
       * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
       * without support for iteratee shorthands.
       *
       * @private
       * @param {Array} array The array to query.
       * @param {Function} predicate The function invoked per iteration.
       * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
       * @param {boolean} [fromRight] Specify iterating from right to left.
       * @returns {Array} Returns the slice of `array`.
       */
      function baseWhile(array, predicate, isDrop, fromRight) {
        var length = array.length,
            index = fromRight ? length : -1;
  
        while ((fromRight ? index-- : ++index < length) &&
          predicate(array[index], index, array)) {}
  
        return isDrop
          ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
          : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
      }
  
      /**
       * The base implementation of `wrapperValue` which returns the result of
       * performing a sequence of actions on the unwrapped `value`, where each
       * successive action is supplied the return value of the previous.
       *
       * @private
       * @param {*} value The unwrapped value.
       * @param {Array} actions Actions to perform to resolve the unwrapped value.
       * @returns {*} Returns the resolved value.
       */
      function baseWrapperValue(value, actions) {
        var result = value;
        if (result instanceof LazyWrapper) {
          result = result.value();
        }
        return arrayReduce(actions, function(result, action) {
          return action.func.apply(action.thisArg, arrayPush([result], action.args));
        }, result);
      }
  
      /**
       * The base implementation of methods like `_.xor`, without support for
       * iteratee shorthands, that accepts an array of arrays to inspect.
       *
       * @private
       * @param {Array} arrays The arrays to inspect.
       * @param {Function} [iteratee] The iteratee invoked per element.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns the new array of values.
       */
      function baseXor(arrays, iteratee, comparator) {
        var length = arrays.length;
        if (length < 2) {
          return length ? baseUniq(arrays[0]) : [];
        }
        var index = -1,
            result = Array(length);
  
        while (++index < length) {
          var array = arrays[index],
              othIndex = -1;
  
          while (++othIndex < length) {
            if (othIndex != index) {
              result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
            }
          }
        }
        return baseUniq(baseFlatten(result, 1), iteratee, comparator);
      }
  
      /**
       * This base implementation of `_.zipObject` which assigns values using `assignFunc`.
       *
       * @private
       * @param {Array} props The property identifiers.
       * @param {Array} values The property values.
       * @param {Function} assignFunc The function to assign values.
       * @returns {Object} Returns the new object.
       */
      function baseZipObject(props, values, assignFunc) {
        var index = -1,
            length = props.length,
            valsLength = values.length,
            result = {};
  
        while (++index < length) {
          var value = index < valsLength ? values[index] : undefined;
          assignFunc(result, props[index], value);
        }
        return result;
      }
  
      /**
       * Casts `value` to an empty array if it's not an array like object.
       *
       * @private
       * @param {*} value The value to inspect.
       * @returns {Array|Object} Returns the cast array-like object.
       */
      function castArrayLikeObject(value) {
        return isArrayLikeObject(value) ? value : [];
      }
  
      /**
       * Casts `value` to `identity` if it's not a function.
       *
       * @private
       * @param {*} value The value to inspect.
       * @returns {Function} Returns cast function.
       */
      function castFunction(value) {
        return typeof value == 'function' ? value : identity;
      }
  
      /**
       * Casts `value` to a path array if it's not one.
       *
       * @private
       * @param {*} value The value to inspect.
       * @param {Object} [object] The object to query keys on.
       * @returns {Array} Returns the cast property path array.
       */
      function castPath(value, object) {
        if (isArray(value)) {
          return value;
        }
        return isKey(value, object) ? [value] : stringToPath(toString(value));
      }
  
      /**
       * A `baseRest` alias which can be replaced with `identity` by module
       * replacement plugins.
       *
       * @private
       * @type {Function}
       * @param {Function} func The function to apply a rest parameter to.
       * @returns {Function} Returns the new function.
       */
      var castRest = baseRest;
  
      /**
       * Casts `array` to a slice if it's needed.
       *
       * @private
       * @param {Array} array The array to inspect.
       * @param {number} start The start position.
       * @param {number} [end=array.length] The end position.
       * @returns {Array} Returns the cast slice.
       */
      function castSlice(array, start, end) {
        var length = array.length;
        end = end === undefined ? length : end;
        return (!start && end >= length) ? array : baseSlice(array, start, end);
      }
  
      /**
       * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).
       *
       * @private
       * @param {number|Object} id The timer id or timeout object of the timer to clear.
       */
      var clearTimeout = ctxClearTimeout || function(id) {
        return root.clearTimeout(id);
      };
  
      /**
       * Creates a clone of  `buffer`.
       *
       * @private
       * @param {Buffer} buffer The buffer to clone.
       * @param {boolean} [isDeep] Specify a deep clone.
       * @returns {Buffer} Returns the cloned buffer.
       */
      function cloneBuffer(buffer, isDeep) {
        if (isDeep) {
          return buffer.slice();
        }
        var length = buffer.length,
            result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);
  
        buffer.copy(result);
        return result;
      }
  
      /**
       * Creates a clone of `arrayBuffer`.
       *
       * @private
       * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
       * @returns {ArrayBuffer} Returns the cloned array buffer.
       */
      function cloneArrayBuffer(arrayBuffer) {
        var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
        new Uint8Array(result).set(new Uint8Array(arrayBuffer));
        return result;
      }
  
      /**
       * Creates a clone of `dataView`.
       *
       * @private
       * @param {Object} dataView The data view to clone.
       * @param {boolean} [isDeep] Specify a deep clone.
       * @returns {Object} Returns the cloned data view.
       */
      function cloneDataView(dataView, isDeep) {
        var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
        return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
      }
  
      /**
       * Creates a clone of `regexp`.
       *
       * @private
       * @param {Object} regexp The regexp to clone.
       * @returns {Object} Returns the cloned regexp.
       */
      function cloneRegExp(regexp) {
        var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
        result.lastIndex = regexp.lastIndex;
        return result;
      }
  
      /**
       * Creates a clone of the `symbol` object.
       *
       * @private
       * @param {Object} symbol The symbol object to clone.
       * @returns {Object} Returns the cloned symbol object.
       */
      function cloneSymbol(symbol) {
        return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
      }
  
      /**
       * Creates a clone of `typedArray`.
       *
       * @private
       * @param {Object} typedArray The typed array to clone.
       * @param {boolean} [isDeep] Specify a deep clone.
       * @returns {Object} Returns the cloned typed array.
       */
      function cloneTypedArray(typedArray, isDeep) {
        var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
        return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
      }
  
      /**
       * Compares values to sort them in ascending order.
       *
       * @private
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @returns {number} Returns the sort order indicator for `value`.
       */
      function compareAscending(value, other) {
        if (value !== other) {
          var valIsDefined = value !== undefined,
              valIsNull = value === null,
              valIsReflexive = value === value,
              valIsSymbol = isSymbol(value);
  
          var othIsDefined = other !== undefined,
              othIsNull = other === null,
              othIsReflexive = other === other,
              othIsSymbol = isSymbol(other);
  
          if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
              (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
              (valIsNull && othIsDefined && othIsReflexive) ||
              (!valIsDefined && othIsReflexive) ||
              !valIsReflexive) {
            return 1;
          }
          if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
              (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
              (othIsNull && valIsDefined && valIsReflexive) ||
              (!othIsDefined && valIsReflexive) ||
              !othIsReflexive) {
            return -1;
          }
        }
        return 0;
      }
  
      /**
       * Used by `_.orderBy` to compare multiple properties of a value to another
       * and stable sort them.
       *
       * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
       * specify an order of "desc" for descending or "asc" for ascending sort order
       * of corresponding values.
       *
       * @private
       * @param {Object} object The object to compare.
       * @param {Object} other The other object to compare.
       * @param {boolean[]|string[]} orders The order to sort by for each property.
       * @returns {number} Returns the sort order indicator for `object`.
       */
      function compareMultiple(object, other, orders) {
        var index = -1,
            objCriteria = object.criteria,
            othCriteria = other.criteria,
            length = objCriteria.length,
            ordersLength = orders.length;
  
        while (++index < length) {
          var result = compareAscending(objCriteria[index], othCriteria[index]);
          if (result) {
            if (index >= ordersLength) {
              return result;
            }
            var order = orders[index];
            return result * (order == 'desc' ? -1 : 1);
          }
        }
        // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
        // that causes it, under certain circumstances, to provide the same value for
        // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
        // for more details.
        //
        // This also ensures a stable sort in V8 and other engines.
        // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
        return object.index - other.index;
      }
  
      /**
       * Creates an array that is the composition of partially applied arguments,
       * placeholders, and provided arguments into a single array of arguments.
       *
       * @private
       * @param {Array} args The provided arguments.
       * @param {Array} partials The arguments to prepend to those provided.
       * @param {Array} holders The `partials` placeholder indexes.
       * @params {boolean} [isCurried] Specify composing for a curried function.
       * @returns {Array} Returns the new array of composed arguments.
       */
      function composeArgs(args, partials, holders, isCurried) {
        var argsIndex = -1,
            argsLength = args.length,
            holdersLength = holders.length,
            leftIndex = -1,
            leftLength = partials.length,
            rangeLength = nativeMax(argsLength - holdersLength, 0),
            result = Array(leftLength + rangeLength),
            isUncurried = !isCurried;
  
        while (++leftIndex < leftLength) {
          result[leftIndex] = partials[leftIndex];
        }
        while (++argsIndex < holdersLength) {
          if (isUncurried || argsIndex < argsLength) {
            result[holders[argsIndex]] = args[argsIndex];
          }
        }
        while (rangeLength--) {
          result[leftIndex++] = args[argsIndex++];
        }
        return result;
      }
  
      /**
       * This function is like `composeArgs` except that the arguments composition
       * is tailored for `_.partialRight`.
       *
       * @private
       * @param {Array} args The provided arguments.
       * @param {Array} partials The arguments to append to those provided.
       * @param {Array} holders The `partials` placeholder indexes.
       * @params {boolean} [isCurried] Specify composing for a curried function.
       * @returns {Array} Returns the new array of composed arguments.
       */
      function composeArgsRight(args, partials, holders, isCurried) {
        var argsIndex = -1,
            argsLength = args.length,
            holdersIndex = -1,
            holdersLength = holders.length,
            rightIndex = -1,
            rightLength = partials.length,
            rangeLength = nativeMax(argsLength - holdersLength, 0),
            result = Array(rangeLength + rightLength),
            isUncurried = !isCurried;
  
        while (++argsIndex < rangeLength) {
          result[argsIndex] = args[argsIndex];
        }
        var offset = argsIndex;
        while (++rightIndex < rightLength) {
          result[offset + rightIndex] = partials[rightIndex];
        }
        while (++holdersIndex < holdersLength) {
          if (isUncurried || argsIndex < argsLength) {
            result[offset + holders[holdersIndex]] = args[argsIndex++];
          }
        }
        return result;
      }
  
      /**
       * Copies the values of `source` to `array`.
       *
       * @private
       * @param {Array} source The array to copy values from.
       * @param {Array} [array=[]] The array to copy values to.
       * @returns {Array} Returns `array`.
       */
      function copyArray(source, array) {
        var index = -1,
            length = source.length;
  
        array || (array = Array(length));
        while (++index < length) {
          array[index] = source[index];
        }
        return array;
      }
  
      /**
       * Copies properties of `source` to `object`.
       *
       * @private
       * @param {Object} source The object to copy properties from.
       * @param {Array} props The property identifiers to copy.
       * @param {Object} [object={}] The object to copy properties to.
       * @param {Function} [customizer] The function to customize copied values.
       * @returns {Object} Returns `object`.
       */
      function copyObject(source, props, object, customizer) {
        var isNew = !object;
        object || (object = {});
  
        var index = -1,
            length = props.length;
  
        while (++index < length) {
          var key = props[index];
  
          var newValue = customizer
            ? customizer(object[key], source[key], key, object, source)
            : undefined;
  
          if (newValue === undefined) {
            newValue = source[key];
          }
          if (isNew) {
            baseAssignValue(object, key, newValue);
          } else {
            assignValue(object, key, newValue);
          }
        }
        return object;
      }
  
      /**
       * Copies own symbols of `source` to `object`.
       *
       * @private
       * @param {Object} source The object to copy symbols from.
       * @param {Object} [object={}] The object to copy symbols to.
       * @returns {Object} Returns `object`.
       */
      function copySymbols(source, object) {
        return copyObject(source, getSymbols(source), object);
      }
  
      /**
       * Copies own and inherited symbols of `source` to `object`.
       *
       * @private
       * @param {Object} source The object to copy symbols from.
       * @param {Object} [object={}] The object to copy symbols to.
       * @returns {Object} Returns `object`.
       */
      function copySymbolsIn(source, object) {
        return copyObject(source, getSymbolsIn(source), object);
      }
  
      /**
       * Creates a function like `_.groupBy`.
       *
       * @private
       * @param {Function} setter The function to set accumulator values.
       * @param {Function} [initializer] The accumulator object initializer.
       * @returns {Function} Returns the new aggregator function.
       */
      function createAggregator(setter, initializer) {
        return function(collection, iteratee) {
          var func = isArray(collection) ? arrayAggregator : baseAggregator,
              accumulator = initializer ? initializer() : {};
  
          return func(collection, setter, getIteratee(iteratee, 2), accumulator);
        };
      }
  
      /**
       * Creates a function like `_.assign`.
       *
       * @private
       * @param {Function} assigner The function to assign values.
       * @returns {Function} Returns the new assigner function.
       */
      function createAssigner(assigner) {
        return baseRest(function(object, sources) {
          var index = -1,
              length = sources.length,
              customizer = length > 1 ? sources[length - 1] : undefined,
              guard = length > 2 ? sources[2] : undefined;
  
          customizer = (assigner.length > 3 && typeof customizer == 'function')
            ? (length--, customizer)
            : undefined;
  
          if (guard && isIterateeCall(sources[0], sources[1], guard)) {
            customizer = length < 3 ? undefined : customizer;
            length = 1;
          }
          object = Object(object);
          while (++index < length) {
            var source = sources[index];
            if (source) {
              assigner(object, source, index, customizer);
            }
          }
          return object;
        });
      }
  
      /**
       * Creates a `baseEach` or `baseEachRight` function.
       *
       * @private
       * @param {Function} eachFunc The function to iterate over a collection.
       * @param {boolean} [fromRight] Specify iterating from right to left.
       * @returns {Function} Returns the new base function.
       */
      function createBaseEach(eachFunc, fromRight) {
        return function(collection, iteratee) {
          if (collection == null) {
            return collection;
          }
          if (!isArrayLike(collection)) {
            return eachFunc(collection, iteratee);
          }
          var length = collection.length,
              index = fromRight ? length : -1,
              iterable = Object(collection);
  
          while ((fromRight ? index-- : ++index < length)) {
            if (iteratee(iterable[index], index, iterable) === false) {
              break;
            }
          }
          return collection;
        };
      }
  
      /**
       * Creates a base function for methods like `_.forIn` and `_.forOwn`.
       *
       * @private
       * @param {boolean} [fromRight] Specify iterating from right to left.
       * @returns {Function} Returns the new base function.
       */
      function createBaseFor(fromRight) {
        return function(object, iteratee, keysFunc) {
          var index = -1,
              iterable = Object(object),
              props = keysFunc(object),
              length = props.length;
  
          while (length--) {
            var key = props[fromRight ? length : ++index];
            if (iteratee(iterable[key], key, iterable) === false) {
              break;
            }
          }
          return object;
        };
      }
  
      /**
       * Creates a function that wraps `func` to invoke it with the optional `this`
       * binding of `thisArg`.
       *
       * @private
       * @param {Function} func The function to wrap.
       * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
       * @param {*} [thisArg] The `this` binding of `func`.
       * @returns {Function} Returns the new wrapped function.
       */
      function createBind(func, bitmask, thisArg) {
        var isBind = bitmask & WRAP_BIND_FLAG,
            Ctor = createCtor(func);
  
        function wrapper() {
          var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
          return fn.apply(isBind ? thisArg : this, arguments);
        }
        return wrapper;
      }
  
      /**
       * Creates a function like `_.lowerFirst`.
       *
       * @private
       * @param {string} methodName The name of the `String` case method to use.
       * @returns {Function} Returns the new case function.
       */
      function createCaseFirst(methodName) {
        return function(string) {
          string = toString(string);
  
          var strSymbols = hasUnicode(string)
            ? stringToArray(string)
            : undefined;
  
          var chr = strSymbols
            ? strSymbols[0]
            : string.charAt(0);
  
          var trailing = strSymbols
            ? castSlice(strSymbols, 1).join('')
            : string.slice(1);
  
          return chr[methodName]() + trailing;
        };
      }
  
      /**
       * Creates a function like `_.camelCase`.
       *
       * @private
       * @param {Function} callback The function to combine each word.
       * @returns {Function} Returns the new compounder function.
       */
      function createCompounder(callback) {
        return function(string) {
          return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
        };
      }
  
      /**
       * Creates a function that produces an instance of `Ctor` regardless of
       * whether it was invoked as part of a `new` expression or by `call` or `apply`.
       *
       * @private
       * @param {Function} Ctor The constructor to wrap.
       * @returns {Function} Returns the new wrapped function.
       */
      function createCtor(Ctor) {
        return function() {
          // Use a `switch` statement to work with class constructors. See
          // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
          // for more details.
          var args = arguments;
          switch (args.length) {
            case 0: return new Ctor;
            case 1: return new Ctor(args[0]);
            case 2: return new Ctor(args[0], args[1]);
            case 3: return new Ctor(args[0], args[1], args[2]);
            case 4: return new Ctor(args[0], args[1], args[2], args[3]);
            case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);
            case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
            case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
          }
          var thisBinding = baseCreate(Ctor.prototype),
              result = Ctor.apply(thisBinding, args);
  
          // Mimic the constructor's `return` behavior.
          // See https://es5.github.io/#x13.2.2 for more details.
          return isObject(result) ? result : thisBinding;
        };
      }
  
      /**
       * Creates a function that wraps `func` to enable currying.
       *
       * @private
       * @param {Function} func The function to wrap.
       * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
       * @param {number} arity The arity of `func`.
       * @returns {Function} Returns the new wrapped function.
       */
      function createCurry(func, bitmask, arity) {
        var Ctor = createCtor(func);
  
        function wrapper() {
          var length = arguments.length,
              args = Array(length),
              index = length,
              placeholder = getHolder(wrapper);
  
          while (index--) {
            args[index] = arguments[index];
          }
          var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
            ? []
            : replaceHolders(args, placeholder);
  
          length -= holders.length;
          if (length < arity) {
            return createRecurry(
              func, bitmask, createHybrid, wrapper.placeholder, undefined,
              args, holders, undefined, undefined, arity - length);
          }
          var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
          return apply(fn, this, args);
        }
        return wrapper;
      }
  
      /**
       * Creates a `_.find` or `_.findLast` function.
       *
       * @private
       * @param {Function} findIndexFunc The function to find the collection index.
       * @returns {Function} Returns the new find function.
       */
      function createFind(findIndexFunc) {
        return function(collection, predicate, fromIndex) {
          var iterable = Object(collection);
          if (!isArrayLike(collection)) {
            var iteratee = getIteratee(predicate, 3);
            collection = keys(collection);
            predicate = function(key) { return iteratee(iterable[key], key, iterable); };
          }
          var index = findIndexFunc(collection, predicate, fromIndex);
          return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;
        };
      }
  
      /**
       * Creates a `_.flow` or `_.flowRight` function.
       *
       * @private
       * @param {boolean} [fromRight] Specify iterating from right to left.
       * @returns {Function} Returns the new flow function.
       */
      function createFlow(fromRight) {
        return flatRest(function(funcs) {
          var length = funcs.length,
              index = length,
              prereq = LodashWrapper.prototype.thru;
  
          if (fromRight) {
            funcs.reverse();
          }
          while (index--) {
            var func = funcs[index];
            if (typeof func != 'function') {
              throw new TypeError(FUNC_ERROR_TEXT);
            }
            if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
              var wrapper = new LodashWrapper([], true);
            }
          }
          index = wrapper ? index : length;
          while (++index < length) {
            func = funcs[index];
  
            var funcName = getFuncName(func),
                data = funcName == 'wrapper' ? getData(func) : undefined;
  
            if (data && isLaziable(data[0]) &&
                  data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
                  !data[4].length && data[9] == 1
                ) {
              wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
            } else {
              wrapper = (func.length == 1 && isLaziable(func))
                ? wrapper[funcName]()
                : wrapper.thru(func);
            }
          }
          return function() {
            var args = arguments,
                value = args[0];
  
            if (wrapper && args.length == 1 && isArray(value)) {
              return wrapper.plant(value).value();
            }
            var index = 0,
                result = length ? funcs[index].apply(this, args) : value;
  
            while (++index < length) {
              result = funcs[index].call(this, result);
            }
            return result;
          };
        });
      }
  
      /**
       * Creates a function that wraps `func` to invoke it with optional `this`
       * binding of `thisArg`, partial application, and currying.
       *
       * @private
       * @param {Function|string} func The function or method name to wrap.
       * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
       * @param {*} [thisArg] The `this` binding of `func`.
       * @param {Array} [partials] The arguments to prepend to those provided to
       *  the new function.
       * @param {Array} [holders] The `partials` placeholder indexes.
       * @param {Array} [partialsRight] The arguments to append to those provided
       *  to the new function.
       * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
       * @param {Array} [argPos] The argument positions of the new function.
       * @param {number} [ary] The arity cap of `func`.
       * @param {number} [arity] The arity of `func`.
       * @returns {Function} Returns the new wrapped function.
       */
      function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
        var isAry = bitmask & WRAP_ARY_FLAG,
            isBind = bitmask & WRAP_BIND_FLAG,
            isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
            isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
            isFlip = bitmask & WRAP_FLIP_FLAG,
            Ctor = isBindKey ? undefined : createCtor(func);
  
        function wrapper() {
          var length = arguments.length,
              args = Array(length),
              index = length;
  
          while (index--) {
            args[index] = arguments[index];
          }
          if (isCurried) {
            var placeholder = getHolder(wrapper),
                holdersCount = countHolders(args, placeholder);
          }
          if (partials) {
            args = composeArgs(args, partials, holders, isCurried);
          }
          if (partialsRight) {
            args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
          }
          length -= holdersCount;
          if (isCurried && length < arity) {
            var newHolders = replaceHolders(args, placeholder);
            return createRecurry(
              func, bitmask, createHybrid, wrapper.placeholder, thisArg,
              args, newHolders, argPos, ary, arity - length
            );
          }
          var thisBinding = isBind ? thisArg : this,
              fn = isBindKey ? thisBinding[func] : func;
  
          length = args.length;
          if (argPos) {
            args = reorder(args, argPos);
          } else if (isFlip && length > 1) {
            args.reverse();
          }
          if (isAry && ary < length) {
            args.length = ary;
          }
          if (this && this !== root && this instanceof wrapper) {
            fn = Ctor || createCtor(fn);
          }
          return fn.apply(thisBinding, args);
        }
        return wrapper;
      }
  
      /**
       * Creates a function like `_.invertBy`.
       *
       * @private
       * @param {Function} setter The function to set accumulator values.
       * @param {Function} toIteratee The function to resolve iteratees.
       * @returns {Function} Returns the new inverter function.
       */
      function createInverter(setter, toIteratee) {
        return function(object, iteratee) {
          return baseInverter(object, setter, toIteratee(iteratee), {});
        };
      }
  
      /**
       * Creates a function that performs a mathematical operation on two values.
       *
       * @private
       * @param {Function} operator The function to perform the operation.
       * @param {number} [defaultValue] The value used for `undefined` arguments.
       * @returns {Function} Returns the new mathematical operation function.
       */
      function createMathOperation(operator, defaultValue) {
        return function(value, other) {
          var result;
          if (value === undefined && other === undefined) {
            return defaultValue;
          }
          if (value !== undefined) {
            result = value;
          }
          if (other !== undefined) {
            if (result === undefined) {
              return other;
            }
            if (typeof value == 'string' || typeof other == 'string') {
              value = baseToString(value);
              other = baseToString(other);
            } else {
              value = baseToNumber(value);
              other = baseToNumber(other);
            }
            result = operator(value, other);
          }
          return result;
        };
      }
  
      /**
       * Creates a function like `_.over`.
       *
       * @private
       * @param {Function} arrayFunc The function to iterate over iteratees.
       * @returns {Function} Returns the new over function.
       */
      function createOver(arrayFunc) {
        return flatRest(function(iteratees) {
          iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
          return baseRest(function(args) {
            var thisArg = this;
            return arrayFunc(iteratees, function(iteratee) {
              return apply(iteratee, thisArg, args);
            });
          });
        });
      }
  
      /**
       * Creates the padding for `string` based on `length`. The `chars` string
       * is truncated if the number of characters exceeds `length`.
       *
       * @private
       * @param {number} length The padding length.
       * @param {string} [chars=' '] The string used as padding.
       * @returns {string} Returns the padding for `string`.
       */
      function createPadding(length, chars) {
        chars = chars === undefined ? ' ' : baseToString(chars);
  
        var charsLength = chars.length;
        if (charsLength < 2) {
          return charsLength ? baseRepeat(chars, length) : chars;
        }
        var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
        return hasUnicode(chars)
          ? castSlice(stringToArray(result), 0, length).join('')
          : result.slice(0, length);
      }
  
      /**
       * Creates a function that wraps `func` to invoke it with the `this` binding
       * of `thisArg` and `partials` prepended to the arguments it receives.
       *
       * @private
       * @param {Function} func The function to wrap.
       * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
       * @param {*} thisArg The `this` binding of `func`.
       * @param {Array} partials The arguments to prepend to those provided to
       *  the new function.
       * @returns {Function} Returns the new wrapped function.
       */
      function createPartial(func, bitmask, thisArg, partials) {
        var isBind = bitmask & WRAP_BIND_FLAG,
            Ctor = createCtor(func);
  
        function wrapper() {
          var argsIndex = -1,
              argsLength = arguments.length,
              leftIndex = -1,
              leftLength = partials.length,
              args = Array(leftLength + argsLength),
              fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
  
          while (++leftIndex < leftLength) {
            args[leftIndex] = partials[leftIndex];
          }
          while (argsLength--) {
            args[leftIndex++] = arguments[++argsIndex];
          }
          return apply(fn, isBind ? thisArg : this, args);
        }
        return wrapper;
      }
  
      /**
       * Creates a `_.range` or `_.rangeRight` function.
       *
       * @private
       * @param {boolean} [fromRight] Specify iterating from right to left.
       * @returns {Function} Returns the new range function.
       */
      function createRange(fromRight) {
        return function(start, end, step) {
          if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
            end = step = undefined;
          }
          // Ensure the sign of `-0` is preserved.
          start = toFinite(start);
          if (end === undefined) {
            end = start;
            start = 0;
          } else {
            end = toFinite(end);
          }
          step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
          return baseRange(start, end, step, fromRight);
        };
      }
  
      /**
       * Creates a function that performs a relational operation on two values.
       *
       * @private
       * @param {Function} operator The function to perform the operation.
       * @returns {Function} Returns the new relational operation function.
       */
      function createRelationalOperation(operator) {
        return function(value, other) {
          if (!(typeof value == 'string' && typeof other == 'string')) {
            value = toNumber(value);
            other = toNumber(other);
          }
          return operator(value, other);
        };
      }
  
      /**
       * Creates a function that wraps `func` to continue currying.
       *
       * @private
       * @param {Function} func The function to wrap.
       * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
       * @param {Function} wrapFunc The function to create the `func` wrapper.
       * @param {*} placeholder The placeholder value.
       * @param {*} [thisArg] The `this` binding of `func`.
       * @param {Array} [partials] The arguments to prepend to those provided to
       *  the new function.
       * @param {Array} [holders] The `partials` placeholder indexes.
       * @param {Array} [argPos] The argument positions of the new function.
       * @param {number} [ary] The arity cap of `func`.
       * @param {number} [arity] The arity of `func`.
       * @returns {Function} Returns the new wrapped function.
       */
      function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
        var isCurry = bitmask & WRAP_CURRY_FLAG,
            newHolders = isCurry ? holders : undefined,
            newHoldersRight = isCurry ? undefined : holders,
            newPartials = isCurry ? partials : undefined,
            newPartialsRight = isCurry ? undefined : partials;
  
        bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);
        bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);
  
        if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
          bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
        }
        var newData = [
          func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
          newHoldersRight, argPos, ary, arity
        ];
  
        var result = wrapFunc.apply(undefined, newData);
        if (isLaziable(func)) {
          setData(result, newData);
        }
        result.placeholder = placeholder;
        return setWrapToString(result, func, bitmask);
      }
  
      /**
       * Creates a function like `_.round`.
       *
       * @private
       * @param {string} methodName The name of the `Math` method to use when rounding.
       * @returns {Function} Returns the new round function.
       */
      function createRound(methodName) {
        var func = Math[methodName];
        return function(number, precision) {
          number = toNumber(number);
          precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
          if (precision && nativeIsFinite(number)) {
            // Shift with exponential notation to avoid floating-point issues.
            // See [MDN](https://mdn.io/round#Examples) for more details.
            var pair = (toString(number) + 'e').split('e'),
                value = func(pair[0] + 'e' + (+pair[1] + precision));
  
            pair = (toString(value) + 'e').split('e');
            return +(pair[0] + 'e' + (+pair[1] - precision));
          }
          return func(number);
        };
      }
  
      /**
       * Creates a set object of `values`.
       *
       * @private
       * @param {Array} values The values to add to the set.
       * @returns {Object} Returns the new set.
       */
      var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {
        return new Set(values);
      };
  
      /**
       * Creates a `_.toPairs` or `_.toPairsIn` function.
       *
       * @private
       * @param {Function} keysFunc The function to get the keys of a given object.
       * @returns {Function} Returns the new pairs function.
       */
      function createToPairs(keysFunc) {
        return function(object) {
          var tag = getTag(object);
          if (tag == mapTag) {
            return mapToArray(object);
          }
          if (tag == setTag) {
            return setToPairs(object);
          }
          return baseToPairs(object, keysFunc(object));
        };
      }
  
      /**
       * Creates a function that either curries or invokes `func` with optional
       * `this` binding and partially applied arguments.
       *
       * @private
       * @param {Function|string} func The function or method name to wrap.
       * @param {number} bitmask The bitmask flags.
       *    1 - `_.bind`
       *    2 - `_.bindKey`
       *    4 - `_.curry` or `_.curryRight` of a bound function
       *    8 - `_.curry`
       *   16 - `_.curryRight`
       *   32 - `_.partial`
       *   64 - `_.partialRight`
       *  128 - `_.rearg`
       *  256 - `_.ary`
       *  512 - `_.flip`
       * @param {*} [thisArg] The `this` binding of `func`.
       * @param {Array} [partials] The arguments to be partially applied.
       * @param {Array} [holders] The `partials` placeholder indexes.
       * @param {Array} [argPos] The argument positions of the new function.
       * @param {number} [ary] The arity cap of `func`.
       * @param {number} [arity] The arity of `func`.
       * @returns {Function} Returns the new wrapped function.
       */
      function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
        var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
        if (!isBindKey && typeof func != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        var length = partials ? partials.length : 0;
        if (!length) {
          bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
          partials = holders = undefined;
        }
        ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
        arity = arity === undefined ? arity : toInteger(arity);
        length -= holders ? holders.length : 0;
  
        if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
          var partialsRight = partials,
              holdersRight = holders;
  
          partials = holders = undefined;
        }
        var data = isBindKey ? undefined : getData(func);
  
        var newData = [
          func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
          argPos, ary, arity
        ];
  
        if (data) {
          mergeData(newData, data);
        }
        func = newData[0];
        bitmask = newData[1];
        thisArg = newData[2];
        partials = newData[3];
        holders = newData[4];
        arity = newData[9] = newData[9] === undefined
          ? (isBindKey ? 0 : func.length)
          : nativeMax(newData[9] - length, 0);
  
        if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
          bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
        }
        if (!bitmask || bitmask == WRAP_BIND_FLAG) {
          var result = createBind(func, bitmask, thisArg);
        } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
          result = createCurry(func, bitmask, arity);
        } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
          result = createPartial(func, bitmask, thisArg, partials);
        } else {
          result = createHybrid.apply(undefined, newData);
        }
        var setter = data ? baseSetData : setData;
        return setWrapToString(setter(result, newData), func, bitmask);
      }
  
      /**
       * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
       * of source objects to the destination object for all destination properties
       * that resolve to `undefined`.
       *
       * @private
       * @param {*} objValue The destination value.
       * @param {*} srcValue The source value.
       * @param {string} key The key of the property to assign.
       * @param {Object} object The parent object of `objValue`.
       * @returns {*} Returns the value to assign.
       */
      function customDefaultsAssignIn(objValue, srcValue, key, object) {
        if (objValue === undefined ||
            (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
          return srcValue;
        }
        return objValue;
      }
  
      /**
       * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
       * objects into destination objects that are passed thru.
       *
       * @private
       * @param {*} objValue The destination value.
       * @param {*} srcValue The source value.
       * @param {string} key The key of the property to merge.
       * @param {Object} object The parent object of `objValue`.
       * @param {Object} source The parent object of `srcValue`.
       * @param {Object} [stack] Tracks traversed source values and their merged
       *  counterparts.
       * @returns {*} Returns the value to assign.
       */
      function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
        if (isObject(objValue) && isObject(srcValue)) {
          // Recursively merge objects and arrays (susceptible to call stack limits).
          stack.set(srcValue, objValue);
          baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
          stack['delete'](srcValue);
        }
        return objValue;
      }
  
      /**
       * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
       * objects.
       *
       * @private
       * @param {*} value The value to inspect.
       * @param {string} key The key of the property to inspect.
       * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
       */
      function customOmitClone(value) {
        return isPlainObject(value) ? undefined : value;
      }
  
      /**
       * A specialized version of `baseIsEqualDeep` for arrays with support for
       * partial deep comparisons.
       *
       * @private
       * @param {Array} array The array to compare.
       * @param {Array} other The other array to compare.
       * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
       * @param {Function} customizer The function to customize comparisons.
       * @param {Function} equalFunc The function to determine equivalents of values.
       * @param {Object} stack Tracks traversed `array` and `other` objects.
       * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
       */
      function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
        var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
            arrLength = array.length,
            othLength = other.length;
  
        if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
          return false;
        }
        // Check that cyclic values are equal.
        var arrStacked = stack.get(array);
        var othStacked = stack.get(other);
        if (arrStacked && othStacked) {
          return arrStacked == other && othStacked == array;
        }
        var index = -1,
            result = true,
            seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;
  
        stack.set(array, other);
        stack.set(other, array);
  
        // Ignore non-index properties.
        while (++index < arrLength) {
          var arrValue = array[index],
              othValue = other[index];
  
          if (customizer) {
            var compared = isPartial
              ? customizer(othValue, arrValue, index, other, array, stack)
              : customizer(arrValue, othValue, index, array, other, stack);
          }
          if (compared !== undefined) {
            if (compared) {
              continue;
            }
            result = false;
            break;
          }
          // Recursively compare arrays (susceptible to call stack limits).
          if (seen) {
            if (!arraySome(other, function(othValue, othIndex) {
                  if (!cacheHas(seen, othIndex) &&
                      (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
                    return seen.push(othIndex);
                  }
                })) {
              result = false;
              break;
            }
          } else if (!(
                arrValue === othValue ||
                  equalFunc(arrValue, othValue, bitmask, customizer, stack)
              )) {
            result = false;
            break;
          }
        }
        stack['delete'](array);
        stack['delete'](other);
        return result;
      }
  
      /**
       * A specialized version of `baseIsEqualDeep` for comparing objects of
       * the same `toStringTag`.
       *
       * **Note:** This function only supports comparing values with tags of
       * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
       *
       * @private
       * @param {Object} object The object to compare.
       * @param {Object} other The other object to compare.
       * @param {string} tag The `toStringTag` of the objects to compare.
       * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
       * @param {Function} customizer The function to customize comparisons.
       * @param {Function} equalFunc The function to determine equivalents of values.
       * @param {Object} stack Tracks traversed `object` and `other` objects.
       * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
       */
      function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
        switch (tag) {
          case dataViewTag:
            if ((object.byteLength != other.byteLength) ||
                (object.byteOffset != other.byteOffset)) {
              return false;
            }
            object = object.buffer;
            other = other.buffer;
  
          case arrayBufferTag:
            if ((object.byteLength != other.byteLength) ||
                !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
              return false;
            }
            return true;
  
          case boolTag:
          case dateTag:
          case numberTag:
            // Coerce booleans to `1` or `0` and dates to milliseconds.
            // Invalid dates are coerced to `NaN`.
            return eq(+object, +other);
  
          case errorTag:
            return object.name == other.name && object.message == other.message;
  
          case regexpTag:
          case stringTag:
            // Coerce regexes to strings and treat strings, primitives and objects,
            // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
            // for more details.
            return object == (other + '');
  
          case mapTag:
            var convert = mapToArray;
  
          case setTag:
            var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
            convert || (convert = setToArray);
  
            if (object.size != other.size && !isPartial) {
              return false;
            }
            // Assume cyclic values are equal.
            var stacked = stack.get(object);
            if (stacked) {
              return stacked == other;
            }
            bitmask |= COMPARE_UNORDERED_FLAG;
  
            // Recursively compare objects (susceptible to call stack limits).
            stack.set(object, other);
            var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
            stack['delete'](object);
            return result;
  
          case symbolTag:
            if (symbolValueOf) {
              return symbolValueOf.call(object) == symbolValueOf.call(other);
            }
        }
        return false;
      }
  
      /**
       * A specialized version of `baseIsEqualDeep` for objects with support for
       * partial deep comparisons.
       *
       * @private
       * @param {Object} object The object to compare.
       * @param {Object} other The other object to compare.
       * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
       * @param {Function} customizer The function to customize comparisons.
       * @param {Function} equalFunc The function to determine equivalents of values.
       * @param {Object} stack Tracks traversed `object` and `other` objects.
       * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
       */
      function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
        var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
            objProps = getAllKeys(object),
            objLength = objProps.length,
            othProps = getAllKeys(other),
            othLength = othProps.length;
  
        if (objLength != othLength && !isPartial) {
          return false;
        }
        var index = objLength;
        while (index--) {
          var key = objProps[index];
          if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
            return false;
          }
        }
        // Check that cyclic values are equal.
        var objStacked = stack.get(object);
        var othStacked = stack.get(other);
        if (objStacked && othStacked) {
          return objStacked == other && othStacked == object;
        }
        var result = true;
        stack.set(object, other);
        stack.set(other, object);
  
        var skipCtor = isPartial;
        while (++index < objLength) {
          key = objProps[index];
          var objValue = object[key],
              othValue = other[key];
  
          if (customizer) {
            var compared = isPartial
              ? customizer(othValue, objValue, key, other, object, stack)
              : customizer(objValue, othValue, key, object, other, stack);
          }
          // Recursively compare objects (susceptible to call stack limits).
          if (!(compared === undefined
                ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
                : compared
              )) {
            result = false;
            break;
          }
          skipCtor || (skipCtor = key == 'constructor');
        }
        if (result && !skipCtor) {
          var objCtor = object.constructor,
              othCtor = other.constructor;
  
          // Non `Object` object instances with different constructors are not equal.
          if (objCtor != othCtor &&
              ('constructor' in object && 'constructor' in other) &&
              !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
                typeof othCtor == 'function' && othCtor instanceof othCtor)) {
            result = false;
          }
        }
        stack['delete'](object);
        stack['delete'](other);
        return result;
      }
  
      /**
       * A specialized version of `baseRest` which flattens the rest array.
       *
       * @private
       * @param {Function} func The function to apply a rest parameter to.
       * @returns {Function} Returns the new function.
       */
      function flatRest(func) {
        return setToString(overRest(func, undefined, flatten), func + '');
      }
  
      /**
       * Creates an array of own enumerable property names and symbols of `object`.
       *
       * @private
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of property names and symbols.
       */
      function getAllKeys(object) {
        return baseGetAllKeys(object, keys, getSymbols);
      }
  
      /**
       * Creates an array of own and inherited enumerable property names and
       * symbols of `object`.
       *
       * @private
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of property names and symbols.
       */
      function getAllKeysIn(object) {
        return baseGetAllKeys(object, keysIn, getSymbolsIn);
      }
  
      /**
       * Gets metadata for `func`.
       *
       * @private
       * @param {Function} func The function to query.
       * @returns {*} Returns the metadata for `func`.
       */
      var getData = !metaMap ? noop : function(func) {
        return metaMap.get(func);
      };
  
      /**
       * Gets the name of `func`.
       *
       * @private
       * @param {Function} func The function to query.
       * @returns {string} Returns the function name.
       */
      function getFuncName(func) {
        var result = (func.name + ''),
            array = realNames[result],
            length = hasOwnProperty.call(realNames, result) ? array.length : 0;
  
        while (length--) {
          var data = array[length],
              otherFunc = data.func;
          if (otherFunc == null || otherFunc == func) {
            return data.name;
          }
        }
        return result;
      }
  
      /**
       * Gets the argument placeholder value for `func`.
       *
       * @private
       * @param {Function} func The function to inspect.
       * @returns {*} Returns the placeholder value.
       */
      function getHolder(func) {
        var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;
        return object.placeholder;
      }
  
      /**
       * Gets the appropriate "iteratee" function. If `_.iteratee` is customized,
       * this function returns the custom method, otherwise it returns `baseIteratee`.
       * If arguments are provided, the chosen function is invoked with them and
       * its result is returned.
       *
       * @private
       * @param {*} [value] The value to convert to an iteratee.
       * @param {number} [arity] The arity of the created iteratee.
       * @returns {Function} Returns the chosen function or its result.
       */
      function getIteratee() {
        var result = lodash.iteratee || iteratee;
        result = result === iteratee ? baseIteratee : result;
        return arguments.length ? result(arguments[0], arguments[1]) : result;
      }
  
      /**
       * Gets the data for `map`.
       *
       * @private
       * @param {Object} map The map to query.
       * @param {string} key The reference key.
       * @returns {*} Returns the map data.
       */
      function getMapData(map, key) {
        var data = map.__data__;
        return isKeyable(key)
          ? data[typeof key == 'string' ? 'string' : 'hash']
          : data.map;
      }
  
      /**
       * Gets the property names, values, and compare flags of `object`.
       *
       * @private
       * @param {Object} object The object to query.
       * @returns {Array} Returns the match data of `object`.
       */
      function getMatchData(object) {
        var result = keys(object),
            length = result.length;
  
        while (length--) {
          var key = result[length],
              value = object[key];
  
          result[length] = [key, value, isStrictComparable(value)];
        }
        return result;
      }
  
      /**
       * Gets the native function at `key` of `object`.
       *
       * @private
       * @param {Object} object The object to query.
       * @param {string} key The key of the method to get.
       * @returns {*} Returns the function if it's native, else `undefined`.
       */
      function getNative(object, key) {
        var value = getValue(object, key);
        return baseIsNative(value) ? value : undefined;
      }
  
      /**
       * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
       *
       * @private
       * @param {*} value The value to query.
       * @returns {string} Returns the raw `toStringTag`.
       */
      function getRawTag(value) {
        var isOwn = hasOwnProperty.call(value, symToStringTag),
            tag = value[symToStringTag];
  
        try {
          value[symToStringTag] = undefined;
          var unmasked = true;
        } catch (e) {}
  
        var result = nativeObjectToString.call(value);
        if (unmasked) {
          if (isOwn) {
            value[symToStringTag] = tag;
          } else {
            delete value[symToStringTag];
          }
        }
        return result;
      }
  
      /**
       * Creates an array of the own enumerable symbols of `object`.
       *
       * @private
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of symbols.
       */
      var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
        if (object == null) {
          return [];
        }
        object = Object(object);
        return arrayFilter(nativeGetSymbols(object), function(symbol) {
          return propertyIsEnumerable.call(object, symbol);
        });
      };
  
      /**
       * Creates an array of the own and inherited enumerable symbols of `object`.
       *
       * @private
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of symbols.
       */
      var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {
        var result = [];
        while (object) {
          arrayPush(result, getSymbols(object));
          object = getPrototype(object);
        }
        return result;
      };
  
      /**
       * Gets the `toStringTag` of `value`.
       *
       * @private
       * @param {*} value The value to query.
       * @returns {string} Returns the `toStringTag`.
       */
      var getTag = baseGetTag;
  
      // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
      if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
          (Map && getTag(new Map) != mapTag) ||
          (Promise && getTag(Promise.resolve()) != promiseTag) ||
          (Set && getTag(new Set) != setTag) ||
          (WeakMap && getTag(new WeakMap) != weakMapTag)) {
        getTag = function(value) {
          var result = baseGetTag(value),
              Ctor = result == objectTag ? value.constructor : undefined,
              ctorString = Ctor ? toSource(Ctor) : '';
  
          if (ctorString) {
            switch (ctorString) {
              case dataViewCtorString: return dataViewTag;
              case mapCtorString: return mapTag;
              case promiseCtorString: return promiseTag;
              case setCtorString: return setTag;
              case weakMapCtorString: return weakMapTag;
            }
          }
          return result;
        };
      }
  
      /**
       * Gets the view, applying any `transforms` to the `start` and `end` positions.
       *
       * @private
       * @param {number} start The start of the view.
       * @param {number} end The end of the view.
       * @param {Array} transforms The transformations to apply to the view.
       * @returns {Object} Returns an object containing the `start` and `end`
       *  positions of the view.
       */
      function getView(start, end, transforms) {
        var index = -1,
            length = transforms.length;
  
        while (++index < length) {
          var data = transforms[index],
              size = data.size;
  
          switch (data.type) {
            case 'drop':      start += size; break;
            case 'dropRight': end -= size; break;
            case 'take':      end = nativeMin(end, start + size); break;
            case 'takeRight': start = nativeMax(start, end - size); break;
          }
        }
        return { 'start': start, 'end': end };
      }
  
      /**
       * Extracts wrapper details from the `source` body comment.
       *
       * @private
       * @param {string} source The source to inspect.
       * @returns {Array} Returns the wrapper details.
       */
      function getWrapDetails(source) {
        var match = source.match(reWrapDetails);
        return match ? match[1].split(reSplitDetails) : [];
      }
  
      /**
       * Checks if `path` exists on `object`.
       *
       * @private
       * @param {Object} object The object to query.
       * @param {Array|string} path The path to check.
       * @param {Function} hasFunc The function to check properties.
       * @returns {boolean} Returns `true` if `path` exists, else `false`.
       */
      function hasPath(object, path, hasFunc) {
        path = castPath(path, object);
  
        var index = -1,
            length = path.length,
            result = false;
  
        while (++index < length) {
          var key = toKey(path[index]);
          if (!(result = object != null && hasFunc(object, key))) {
            break;
          }
          object = object[key];
        }
        if (result || ++index != length) {
          return result;
        }
        length = object == null ? 0 : object.length;
        return !!length && isLength(length) && isIndex(key, length) &&
          (isArray(object) || isArguments(object));
      }
  
      /**
       * Initializes an array clone.
       *
       * @private
       * @param {Array} array The array to clone.
       * @returns {Array} Returns the initialized clone.
       */
      function initCloneArray(array) {
        var length = array.length,
            result = new array.constructor(length);
  
        // Add properties assigned by `RegExp#exec`.
        if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
          result.index = array.index;
          result.input = array.input;
        }
        return result;
      }
  
      /**
       * Initializes an object clone.
       *
       * @private
       * @param {Object} object The object to clone.
       * @returns {Object} Returns the initialized clone.
       */
      function initCloneObject(object) {
        return (typeof object.constructor == 'function' && !isPrototype(object))
          ? baseCreate(getPrototype(object))
          : {};
      }
  
      /**
       * Initializes an object clone based on its `toStringTag`.
       *
       * **Note:** This function only supports cloning values with tags of
       * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
       *
       * @private
       * @param {Object} object The object to clone.
       * @param {string} tag The `toStringTag` of the object to clone.
       * @param {boolean} [isDeep] Specify a deep clone.
       * @returns {Object} Returns the initialized clone.
       */
      function initCloneByTag(object, tag, isDeep) {
        var Ctor = object.constructor;
        switch (tag) {
          case arrayBufferTag:
            return cloneArrayBuffer(object);
  
          case boolTag:
          case dateTag:
            return new Ctor(+object);
  
          case dataViewTag:
            return cloneDataView(object, isDeep);
  
          case float32Tag: case float64Tag:
          case int8Tag: case int16Tag: case int32Tag:
          case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
            return cloneTypedArray(object, isDeep);
  
          case mapTag:
            return new Ctor;
  
          case numberTag:
          case stringTag:
            return new Ctor(object);
  
          case regexpTag:
            return cloneRegExp(object);
  
          case setTag:
            return new Ctor;
  
          case symbolTag:
            return cloneSymbol(object);
        }
      }
  
      /**
       * Inserts wrapper `details` in a comment at the top of the `source` body.
       *
       * @private
       * @param {string} source The source to modify.
       * @returns {Array} details The details to insert.
       * @returns {string} Returns the modified source.
       */
      function insertWrapDetails(source, details) {
        var length = details.length;
        if (!length) {
          return source;
        }
        var lastIndex = length - 1;
        details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
        details = details.join(length > 2 ? ', ' : ' ');
        return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
      }
  
      /**
       * Checks if `value` is a flattenable `arguments` object or array.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
       */
      function isFlattenable(value) {
        return isArray(value) || isArguments(value) ||
          !!(spreadableSymbol && value && value[spreadableSymbol]);
      }
  
      /**
       * Checks if `value` is a valid array-like index.
       *
       * @private
       * @param {*} value The value to check.
       * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
       * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
       */
      function isIndex(value, length) {
        var type = typeof value;
        length = length == null ? MAX_SAFE_INTEGER : length;
  
        return !!length &&
          (type == 'number' ||
            (type != 'symbol' && reIsUint.test(value))) &&
              (value > -1 && value % 1 == 0 && value < length);
      }
  
      /**
       * Checks if the given arguments are from an iteratee call.
       *
       * @private
       * @param {*} value The potential iteratee value argument.
       * @param {*} index The potential iteratee index or key argument.
       * @param {*} object The potential iteratee object argument.
       * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
       *  else `false`.
       */
      function isIterateeCall(value, index, object) {
        if (!isObject(object)) {
          return false;
        }
        var type = typeof index;
        if (type == 'number'
              ? (isArrayLike(object) && isIndex(index, object.length))
              : (type == 'string' && index in object)
            ) {
          return eq(object[index], value);
        }
        return false;
      }
  
      /**
       * Checks if `value` is a property name and not a property path.
       *
       * @private
       * @param {*} value The value to check.
       * @param {Object} [object] The object to query keys on.
       * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
       */
      function isKey(value, object) {
        if (isArray(value)) {
          return false;
        }
        var type = typeof value;
        if (type == 'number' || type == 'symbol' || type == 'boolean' ||
            value == null || isSymbol(value)) {
          return true;
        }
        return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
          (object != null && value in Object(object));
      }
  
      /**
       * Checks if `value` is suitable for use as unique object key.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
       */
      function isKeyable(value) {
        var type = typeof value;
        return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
          ? (value !== '__proto__')
          : (value === null);
      }
  
      /**
       * Checks if `func` has a lazy counterpart.
       *
       * @private
       * @param {Function} func The function to check.
       * @returns {boolean} Returns `true` if `func` has a lazy counterpart,
       *  else `false`.
       */
      function isLaziable(func) {
        var funcName = getFuncName(func),
            other = lodash[funcName];
  
        if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
          return false;
        }
        if (func === other) {
          return true;
        }
        var data = getData(other);
        return !!data && func === data[0];
      }
  
      /**
       * Checks if `func` has its source masked.
       *
       * @private
       * @param {Function} func The function to check.
       * @returns {boolean} Returns `true` if `func` is masked, else `false`.
       */
      function isMasked(func) {
        return !!maskSrcKey && (maskSrcKey in func);
      }
  
      /**
       * Checks if `func` is capable of being masked.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `func` is maskable, else `false`.
       */
      var isMaskable = coreJsData ? isFunction : stubFalse;
  
      /**
       * Checks if `value` is likely a prototype object.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
       */
      function isPrototype(value) {
        var Ctor = value && value.constructor,
            proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;
  
        return value === proto;
      }
  
      /**
       * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
       *
       * @private
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` if suitable for strict
       *  equality comparisons, else `false`.
       */
      function isStrictComparable(value) {
        return value === value && !isObject(value);
      }
  
      /**
       * A specialized version of `matchesProperty` for source values suitable
       * for strict equality comparisons, i.e. `===`.
       *
       * @private
       * @param {string} key The key of the property to get.
       * @param {*} srcValue The value to match.
       * @returns {Function} Returns the new spec function.
       */
      function matchesStrictComparable(key, srcValue) {
        return function(object) {
          if (object == null) {
            return false;
          }
          return object[key] === srcValue &&
            (srcValue !== undefined || (key in Object(object)));
        };
      }
  
      /**
       * A specialized version of `_.memoize` which clears the memoized function's
       * cache when it exceeds `MAX_MEMOIZE_SIZE`.
       *
       * @private
       * @param {Function} func The function to have its output memoized.
       * @returns {Function} Returns the new memoized function.
       */
      function memoizeCapped(func) {
        var result = memoize(func, function(key) {
          if (cache.size === MAX_MEMOIZE_SIZE) {
            cache.clear();
          }
          return key;
        });
  
        var cache = result.cache;
        return result;
      }
  
      /**
       * Merges the function metadata of `source` into `data`.
       *
       * Merging metadata reduces the number of wrappers used to invoke a function.
       * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
       * may be applied regardless of execution order. Methods like `_.ary` and
       * `_.rearg` modify function arguments, making the order in which they are
       * executed important, preventing the merging of metadata. However, we make
       * an exception for a safe combined case where curried functions have `_.ary`
       * and or `_.rearg` applied.
       *
       * @private
       * @param {Array} data The destination metadata.
       * @param {Array} source The source metadata.
       * @returns {Array} Returns `data`.
       */
      function mergeData(data, source) {
        var bitmask = data[1],
            srcBitmask = source[1],
            newBitmask = bitmask | srcBitmask,
            isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);
  
        var isCombo =
          ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||
          ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||
          ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));
  
        // Exit early if metadata can't be merged.
        if (!(isCommon || isCombo)) {
          return data;
        }
        // Use source `thisArg` if available.
        if (srcBitmask & WRAP_BIND_FLAG) {
          data[2] = source[2];
          // Set when currying a bound function.
          newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
        }
        // Compose partial arguments.
        var value = source[3];
        if (value) {
          var partials = data[3];
          data[3] = partials ? composeArgs(partials, value, source[4]) : value;
          data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];
        }
        // Compose partial right arguments.
        value = source[5];
        if (value) {
          partials = data[5];
          data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
          data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];
        }
        // Use source `argPos` if available.
        value = source[7];
        if (value) {
          data[7] = value;
        }
        // Use source `ary` if it's smaller.
        if (srcBitmask & WRAP_ARY_FLAG) {
          data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
        }
        // Use source `arity` if one is not provided.
        if (data[9] == null) {
          data[9] = source[9];
        }
        // Use source `func` and merge bitmasks.
        data[0] = source[0];
        data[1] = newBitmask;
  
        return data;
      }
  
      /**
       * This function is like
       * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
       * except that it includes inherited enumerable properties.
       *
       * @private
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of property names.
       */
      function nativeKeysIn(object) {
        var result = [];
        if (object != null) {
          for (var key in Object(object)) {
            result.push(key);
          }
        }
        return result;
      }
  
      /**
       * Converts `value` to a string using `Object.prototype.toString`.
       *
       * @private
       * @param {*} value The value to convert.
       * @returns {string} Returns the converted string.
       */
      function objectToString(value) {
        return nativeObjectToString.call(value);
      }
  
      /**
       * A specialized version of `baseRest` which transforms the rest array.
       *
       * @private
       * @param {Function} func The function to apply a rest parameter to.
       * @param {number} [start=func.length-1] The start position of the rest parameter.
       * @param {Function} transform The rest array transform.
       * @returns {Function} Returns the new function.
       */
      function overRest(func, start, transform) {
        start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
        return function() {
          var args = arguments,
              index = -1,
              length = nativeMax(args.length - start, 0),
              array = Array(length);
  
          while (++index < length) {
            array[index] = args[start + index];
          }
          index = -1;
          var otherArgs = Array(start + 1);
          while (++index < start) {
            otherArgs[index] = args[index];
          }
          otherArgs[start] = transform(array);
          return apply(func, this, otherArgs);
        };
      }
  
      /**
       * Gets the parent value at `path` of `object`.
       *
       * @private
       * @param {Object} object The object to query.
       * @param {Array} path The path to get the parent value of.
       * @returns {*} Returns the parent value.
       */
      function parent(object, path) {
        return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
      }
  
      /**
       * Reorder `array` according to the specified indexes where the element at
       * the first index is assigned as the first element, the element at
       * the second index is assigned as the second element, and so on.
       *
       * @private
       * @param {Array} array The array to reorder.
       * @param {Array} indexes The arranged array indexes.
       * @returns {Array} Returns `array`.
       */
      function reorder(array, indexes) {
        var arrLength = array.length,
            length = nativeMin(indexes.length, arrLength),
            oldArray = copyArray(array);
  
        while (length--) {
          var index = indexes[length];
          array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
        }
        return array;
      }
  
      /**
       * Gets the value at `key`, unless `key` is "__proto__" or "constructor".
       *
       * @private
       * @param {Object} object The object to query.
       * @param {string} key The key of the property to get.
       * @returns {*} Returns the property value.
       */
      function safeGet(object, key) {
        if (key === 'constructor' && typeof object[key] === 'function') {
          return;
        }
  
        if (key == '__proto__') {
          return;
        }
  
        return object[key];
      }
  
      /**
       * Sets metadata for `func`.
       *
       * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
       * period of time, it will trip its breaker and transition to an identity
       * function to avoid garbage collection pauses in V8. See
       * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
       * for more details.
       *
       * @private
       * @param {Function} func The function to associate metadata with.
       * @param {*} data The metadata.
       * @returns {Function} Returns `func`.
       */
      var setData = shortOut(baseSetData);
  
      /**
       * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).
       *
       * @private
       * @param {Function} func The function to delay.
       * @param {number} wait The number of milliseconds to delay invocation.
       * @returns {number|Object} Returns the timer id or timeout object.
       */
      var setTimeout = ctxSetTimeout || function(func, wait) {
        return root.setTimeout(func, wait);
      };
  
      /**
       * Sets the `toString` method of `func` to return `string`.
       *
       * @private
       * @param {Function} func The function to modify.
       * @param {Function} string The `toString` result.
       * @returns {Function} Returns `func`.
       */
      var setToString = shortOut(baseSetToString);
  
      /**
       * Sets the `toString` method of `wrapper` to mimic the source of `reference`
       * with wrapper details in a comment at the top of the source body.
       *
       * @private
       * @param {Function} wrapper The function to modify.
       * @param {Function} reference The reference function.
       * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
       * @returns {Function} Returns `wrapper`.
       */
      function setWrapToString(wrapper, reference, bitmask) {
        var source = (reference + '');
        return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
      }
  
      /**
       * Creates a function that'll short out and invoke `identity` instead
       * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
       * milliseconds.
       *
       * @private
       * @param {Function} func The function to restrict.
       * @returns {Function} Returns the new shortable function.
       */
      function shortOut(func) {
        var count = 0,
            lastCalled = 0;
  
        return function() {
          var stamp = nativeNow(),
              remaining = HOT_SPAN - (stamp - lastCalled);
  
          lastCalled = stamp;
          if (remaining > 0) {
            if (++count >= HOT_COUNT) {
              return arguments[0];
            }
          } else {
            count = 0;
          }
          return func.apply(undefined, arguments);
        };
      }
  
      /**
       * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
       *
       * @private
       * @param {Array} array The array to shuffle.
       * @param {number} [size=array.length] The size of `array`.
       * @returns {Array} Returns `array`.
       */
      function shuffleSelf(array, size) {
        var index = -1,
            length = array.length,
            lastIndex = length - 1;
  
        size = size === undefined ? length : size;
        while (++index < size) {
          var rand = baseRandom(index, lastIndex),
              value = array[rand];
  
          array[rand] = array[index];
          array[index] = value;
        }
        array.length = size;
        return array;
      }
  
      /**
       * Converts `string` to a property path array.
       *
       * @private
       * @param {string} string The string to convert.
       * @returns {Array} Returns the property path array.
       */
      var stringToPath = memoizeCapped(function(string) {
        var result = [];
        if (string.charCodeAt(0) === 46 /* . */) {
          result.push('');
        }
        string.replace(rePropName, function(match, number, quote, subString) {
          result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
        });
        return result;
      });
  
      /**
       * Converts `value` to a string key if it's not a string or symbol.
       *
       * @private
       * @param {*} value The value to inspect.
       * @returns {string|symbol} Returns the key.
       */
      function toKey(value) {
        if (typeof value == 'string' || isSymbol(value)) {
          return value;
        }
        var result = (value + '');
        return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
      }
  
      /**
       * Converts `func` to its source code.
       *
       * @private
       * @param {Function} func The function to convert.
       * @returns {string} Returns the source code.
       */
      function toSource(func) {
        if (func != null) {
          try {
            return funcToString.call(func);
          } catch (e) {}
          try {
            return (func + '');
          } catch (e) {}
        }
        return '';
      }
  
      /**
       * Updates wrapper `details` based on `bitmask` flags.
       *
       * @private
       * @returns {Array} details The details to modify.
       * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
       * @returns {Array} Returns `details`.
       */
      function updateWrapDetails(details, bitmask) {
        arrayEach(wrapFlags, function(pair) {
          var value = '_.' + pair[0];
          if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {
            details.push(value);
          }
        });
        return details.sort();
      }
  
      /**
       * Creates a clone of `wrapper`.
       *
       * @private
       * @param {Object} wrapper The wrapper to clone.
       * @returns {Object} Returns the cloned wrapper.
       */
      function wrapperClone(wrapper) {
        if (wrapper instanceof LazyWrapper) {
          return wrapper.clone();
        }
        var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
        result.__actions__ = copyArray(wrapper.__actions__);
        result.__index__  = wrapper.__index__;
        result.__values__ = wrapper.__values__;
        return result;
      }
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Creates an array of elements split into groups the length of `size`.
       * If `array` can't be split evenly, the final chunk will be the remaining
       * elements.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The array to process.
       * @param {number} [size=1] The length of each chunk
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Array} Returns the new array of chunks.
       * @example
       *
       * _.chunk(['a', 'b', 'c', 'd'], 2);
       * // => [['a', 'b'], ['c', 'd']]
       *
       * _.chunk(['a', 'b', 'c', 'd'], 3);
       * // => [['a', 'b', 'c'], ['d']]
       */
      function chunk(array, size, guard) {
        if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {
          size = 1;
        } else {
          size = nativeMax(toInteger(size), 0);
        }
        var length = array == null ? 0 : array.length;
        if (!length || size < 1) {
          return [];
        }
        var index = 0,
            resIndex = 0,
            result = Array(nativeCeil(length / size));
  
        while (index < length) {
          result[resIndex++] = baseSlice(array, index, (index += size));
        }
        return result;
      }
  
      /**
       * Creates an array with all falsey values removed. The values `false`, `null`,
       * `0`, `""`, `undefined`, and `NaN` are falsey.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The array to compact.
       * @returns {Array} Returns the new array of filtered values.
       * @example
       *
       * _.compact([0, 1, false, 2, '', 3]);
       * // => [1, 2, 3]
       */
      function compact(array) {
        var index = -1,
            length = array == null ? 0 : array.length,
            resIndex = 0,
            result = [];
  
        while (++index < length) {
          var value = array[index];
          if (value) {
            result[resIndex++] = value;
          }
        }
        return result;
      }
  
      /**
       * Creates a new array concatenating `array` with any additional arrays
       * and/or values.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to concatenate.
       * @param {...*} [values] The values to concatenate.
       * @returns {Array} Returns the new concatenated array.
       * @example
       *
       * var array = [1];
       * var other = _.concat(array, 2, [3], [[4]]);
       *
       * console.log(other);
       * // => [1, 2, 3, [4]]
       *
       * console.log(array);
       * // => [1]
       */
      function concat() {
        var length = arguments.length;
        if (!length) {
          return [];
        }
        var args = Array(length - 1),
            array = arguments[0],
            index = length;
  
        while (index--) {
          args[index - 1] = arguments[index];
        }
        return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
      }
  
      /**
       * Creates an array of `array` values not included in the other given arrays
       * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
       * for equality comparisons. The order and references of result values are
       * determined by the first array.
       *
       * **Note:** Unlike `_.pullAll`, this method returns a new array.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {...Array} [values] The values to exclude.
       * @returns {Array} Returns the new array of filtered values.
       * @see _.without, _.xor
       * @example
       *
       * _.difference([2, 1], [2, 3]);
       * // => [1]
       */
      var difference = baseRest(function(array, values) {
        return isArrayLikeObject(array)
          ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))
          : [];
      });
  
      /**
       * This method is like `_.difference` except that it accepts `iteratee` which
       * is invoked for each element of `array` and `values` to generate the criterion
       * by which they're compared. The order and references of result values are
       * determined by the first array. The iteratee is invoked with one argument:
       * (value).
       *
       * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {...Array} [values] The values to exclude.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {Array} Returns the new array of filtered values.
       * @example
       *
       * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
       * // => [1.2]
       *
       * // The `_.property` iteratee shorthand.
       * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
       * // => [{ 'x': 2 }]
       */
      var differenceBy = baseRest(function(array, values) {
        var iteratee = last(values);
        if (isArrayLikeObject(iteratee)) {
          iteratee = undefined;
        }
        return isArrayLikeObject(array)
          ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))
          : [];
      });
  
      /**
       * This method is like `_.difference` except that it accepts `comparator`
       * which is invoked to compare elements of `array` to `values`. The order and
       * references of result values are determined by the first array. The comparator
       * is invoked with two arguments: (arrVal, othVal).
       *
       * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {...Array} [values] The values to exclude.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns the new array of filtered values.
       * @example
       *
       * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
       *
       * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
       * // => [{ 'x': 2, 'y': 1 }]
       */
      var differenceWith = baseRest(function(array, values) {
        var comparator = last(values);
        if (isArrayLikeObject(comparator)) {
          comparator = undefined;
        }
        return isArrayLikeObject(array)
          ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)
          : [];
      });
  
      /**
       * Creates a slice of `array` with `n` elements dropped from the beginning.
       *
       * @static
       * @memberOf _
       * @since 0.5.0
       * @category Array
       * @param {Array} array The array to query.
       * @param {number} [n=1] The number of elements to drop.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Array} Returns the slice of `array`.
       * @example
       *
       * _.drop([1, 2, 3]);
       * // => [2, 3]
       *
       * _.drop([1, 2, 3], 2);
       * // => [3]
       *
       * _.drop([1, 2, 3], 5);
       * // => []
       *
       * _.drop([1, 2, 3], 0);
       * // => [1, 2, 3]
       */
      function drop(array, n, guard) {
        var length = array == null ? 0 : array.length;
        if (!length) {
          return [];
        }
        n = (guard || n === undefined) ? 1 : toInteger(n);
        return baseSlice(array, n < 0 ? 0 : n, length);
      }
  
      /**
       * Creates a slice of `array` with `n` elements dropped from the end.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The array to query.
       * @param {number} [n=1] The number of elements to drop.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Array} Returns the slice of `array`.
       * @example
       *
       * _.dropRight([1, 2, 3]);
       * // => [1, 2]
       *
       * _.dropRight([1, 2, 3], 2);
       * // => [1]
       *
       * _.dropRight([1, 2, 3], 5);
       * // => []
       *
       * _.dropRight([1, 2, 3], 0);
       * // => [1, 2, 3]
       */
      function dropRight(array, n, guard) {
        var length = array == null ? 0 : array.length;
        if (!length) {
          return [];
        }
        n = (guard || n === undefined) ? 1 : toInteger(n);
        n = length - n;
        return baseSlice(array, 0, n < 0 ? 0 : n);
      }
  
      /**
       * Creates a slice of `array` excluding elements dropped from the end.
       * Elements are dropped until `predicate` returns falsey. The predicate is
       * invoked with three arguments: (value, index, array).
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The array to query.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the slice of `array`.
       * @example
       *
       * var users = [
       *   { 'user': 'barney',  'active': true },
       *   { 'user': 'fred',    'active': false },
       *   { 'user': 'pebbles', 'active': false }
       * ];
       *
       * _.dropRightWhile(users, function(o) { return !o.active; });
       * // => objects for ['barney']
       *
       * // The `_.matches` iteratee shorthand.
       * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
       * // => objects for ['barney', 'fred']
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.dropRightWhile(users, ['active', false]);
       * // => objects for ['barney']
       *
       * // The `_.property` iteratee shorthand.
       * _.dropRightWhile(users, 'active');
       * // => objects for ['barney', 'fred', 'pebbles']
       */
      function dropRightWhile(array, predicate) {
        return (array && array.length)
          ? baseWhile(array, getIteratee(predicate, 3), true, true)
          : [];
      }
  
      /**
       * Creates a slice of `array` excluding elements dropped from the beginning.
       * Elements are dropped until `predicate` returns falsey. The predicate is
       * invoked with three arguments: (value, index, array).
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The array to query.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the slice of `array`.
       * @example
       *
       * var users = [
       *   { 'user': 'barney',  'active': false },
       *   { 'user': 'fred',    'active': false },
       *   { 'user': 'pebbles', 'active': true }
       * ];
       *
       * _.dropWhile(users, function(o) { return !o.active; });
       * // => objects for ['pebbles']
       *
       * // The `_.matches` iteratee shorthand.
       * _.dropWhile(users, { 'user': 'barney', 'active': false });
       * // => objects for ['fred', 'pebbles']
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.dropWhile(users, ['active', false]);
       * // => objects for ['pebbles']
       *
       * // The `_.property` iteratee shorthand.
       * _.dropWhile(users, 'active');
       * // => objects for ['barney', 'fred', 'pebbles']
       */
      function dropWhile(array, predicate) {
        return (array && array.length)
          ? baseWhile(array, getIteratee(predicate, 3), true)
          : [];
      }
  
      /**
       * Fills elements of `array` with `value` from `start` up to, but not
       * including, `end`.
       *
       * **Note:** This method mutates `array`.
       *
       * @static
       * @memberOf _
       * @since 3.2.0
       * @category Array
       * @param {Array} array The array to fill.
       * @param {*} value The value to fill `array` with.
       * @param {number} [start=0] The start position.
       * @param {number} [end=array.length] The end position.
       * @returns {Array} Returns `array`.
       * @example
       *
       * var array = [1, 2, 3];
       *
       * _.fill(array, 'a');
       * console.log(array);
       * // => ['a', 'a', 'a']
       *
       * _.fill(Array(3), 2);
       * // => [2, 2, 2]
       *
       * _.fill([4, 6, 8, 10], '*', 1, 3);
       * // => [4, '*', '*', 10]
       */
      function fill(array, value, start, end) {
        var length = array == null ? 0 : array.length;
        if (!length) {
          return [];
        }
        if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
          start = 0;
          end = length;
        }
        return baseFill(array, value, start, end);
      }
  
      /**
       * This method is like `_.find` except that it returns the index of the first
       * element `predicate` returns truthy for instead of the element itself.
       *
       * @static
       * @memberOf _
       * @since 1.1.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @param {number} [fromIndex=0] The index to search from.
       * @returns {number} Returns the index of the found element, else `-1`.
       * @example
       *
       * var users = [
       *   { 'user': 'barney',  'active': false },
       *   { 'user': 'fred',    'active': false },
       *   { 'user': 'pebbles', 'active': true }
       * ];
       *
       * _.findIndex(users, function(o) { return o.user == 'barney'; });
       * // => 0
       *
       * // The `_.matches` iteratee shorthand.
       * _.findIndex(users, { 'user': 'fred', 'active': false });
       * // => 1
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.findIndex(users, ['active', false]);
       * // => 0
       *
       * // The `_.property` iteratee shorthand.
       * _.findIndex(users, 'active');
       * // => 2
       */
      function findIndex(array, predicate, fromIndex) {
        var length = array == null ? 0 : array.length;
        if (!length) {
          return -1;
        }
        var index = fromIndex == null ? 0 : toInteger(fromIndex);
        if (index < 0) {
          index = nativeMax(length + index, 0);
        }
        return baseFindIndex(array, getIteratee(predicate, 3), index);
      }
  
      /**
       * This method is like `_.findIndex` except that it iterates over elements
       * of `collection` from right to left.
       *
       * @static
       * @memberOf _
       * @since 2.0.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @param {number} [fromIndex=array.length-1] The index to search from.
       * @returns {number} Returns the index of the found element, else `-1`.
       * @example
       *
       * var users = [
       *   { 'user': 'barney',  'active': true },
       *   { 'user': 'fred',    'active': false },
       *   { 'user': 'pebbles', 'active': false }
       * ];
       *
       * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
       * // => 2
       *
       * // The `_.matches` iteratee shorthand.
       * _.findLastIndex(users, { 'user': 'barney', 'active': true });
       * // => 0
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.findLastIndex(users, ['active', false]);
       * // => 2
       *
       * // The `_.property` iteratee shorthand.
       * _.findLastIndex(users, 'active');
       * // => 0
       */
      function findLastIndex(array, predicate, fromIndex) {
        var length = array == null ? 0 : array.length;
        if (!length) {
          return -1;
        }
        var index = length - 1;
        if (fromIndex !== undefined) {
          index = toInteger(fromIndex);
          index = fromIndex < 0
            ? nativeMax(length + index, 0)
            : nativeMin(index, length - 1);
        }
        return baseFindIndex(array, getIteratee(predicate, 3), index, true);
      }
  
      /**
       * Flattens `array` a single level deep.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The array to flatten.
       * @returns {Array} Returns the new flattened array.
       * @example
       *
       * _.flatten([1, [2, [3, [4]], 5]]);
       * // => [1, 2, [3, [4]], 5]
       */
      function flatten(array) {
        var length = array == null ? 0 : array.length;
        return length ? baseFlatten(array, 1) : [];
      }
  
      /**
       * Recursively flattens `array`.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The array to flatten.
       * @returns {Array} Returns the new flattened array.
       * @example
       *
       * _.flattenDeep([1, [2, [3, [4]], 5]]);
       * // => [1, 2, 3, 4, 5]
       */
      function flattenDeep(array) {
        var length = array == null ? 0 : array.length;
        return length ? baseFlatten(array, INFINITY) : [];
      }
  
      /**
       * Recursively flatten `array` up to `depth` times.
       *
       * @static
       * @memberOf _
       * @since 4.4.0
       * @category Array
       * @param {Array} array The array to flatten.
       * @param {number} [depth=1] The maximum recursion depth.
       * @returns {Array} Returns the new flattened array.
       * @example
       *
       * var array = [1, [2, [3, [4]], 5]];
       *
       * _.flattenDepth(array, 1);
       * // => [1, 2, [3, [4]], 5]
       *
       * _.flattenDepth(array, 2);
       * // => [1, 2, 3, [4], 5]
       */
      function flattenDepth(array, depth) {
        var length = array == null ? 0 : array.length;
        if (!length) {
          return [];
        }
        depth = depth === undefined ? 1 : toInteger(depth);
        return baseFlatten(array, depth);
      }
  
      /**
       * The inverse of `_.toPairs`; this method returns an object composed
       * from key-value `pairs`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} pairs The key-value pairs.
       * @returns {Object} Returns the new object.
       * @example
       *
       * _.fromPairs([['a', 1], ['b', 2]]);
       * // => { 'a': 1, 'b': 2 }
       */
      function fromPairs(pairs) {
        var index = -1,
            length = pairs == null ? 0 : pairs.length,
            result = {};
  
        while (++index < length) {
          var pair = pairs[index];
          result[pair[0]] = pair[1];
        }
        return result;
      }
  
      /**
       * Gets the first element of `array`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @alias first
       * @category Array
       * @param {Array} array The array to query.
       * @returns {*} Returns the first element of `array`.
       * @example
       *
       * _.head([1, 2, 3]);
       * // => 1
       *
       * _.head([]);
       * // => undefined
       */
      function head(array) {
        return (array && array.length) ? array[0] : undefined;
      }
  
      /**
       * Gets the index at which the first occurrence of `value` is found in `array`
       * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
       * for equality comparisons. If `fromIndex` is negative, it's used as the
       * offset from the end of `array`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {*} value The value to search for.
       * @param {number} [fromIndex=0] The index to search from.
       * @returns {number} Returns the index of the matched value, else `-1`.
       * @example
       *
       * _.indexOf([1, 2, 1, 2], 2);
       * // => 1
       *
       * // Search from the `fromIndex`.
       * _.indexOf([1, 2, 1, 2], 2, 2);
       * // => 3
       */
      function indexOf(array, value, fromIndex) {
        var length = array == null ? 0 : array.length;
        if (!length) {
          return -1;
        }
        var index = fromIndex == null ? 0 : toInteger(fromIndex);
        if (index < 0) {
          index = nativeMax(length + index, 0);
        }
        return baseIndexOf(array, value, index);
      }
  
      /**
       * Gets all but the last element of `array`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The array to query.
       * @returns {Array} Returns the slice of `array`.
       * @example
       *
       * _.initial([1, 2, 3]);
       * // => [1, 2]
       */
      function initial(array) {
        var length = array == null ? 0 : array.length;
        return length ? baseSlice(array, 0, -1) : [];
      }
  
      /**
       * Creates an array of unique values that are included in all given arrays
       * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
       * for equality comparisons. The order and references of result values are
       * determined by the first array.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {...Array} [arrays] The arrays to inspect.
       * @returns {Array} Returns the new array of intersecting values.
       * @example
       *
       * _.intersection([2, 1], [2, 3]);
       * // => [2]
       */
      var intersection = baseRest(function(arrays) {
        var mapped = arrayMap(arrays, castArrayLikeObject);
        return (mapped.length && mapped[0] === arrays[0])
          ? baseIntersection(mapped)
          : [];
      });
  
      /**
       * This method is like `_.intersection` except that it accepts `iteratee`
       * which is invoked for each element of each `arrays` to generate the criterion
       * by which they're compared. The order and references of result values are
       * determined by the first array. The iteratee is invoked with one argument:
       * (value).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {...Array} [arrays] The arrays to inspect.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {Array} Returns the new array of intersecting values.
       * @example
       *
       * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
       * // => [2.1]
       *
       * // The `_.property` iteratee shorthand.
       * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
       * // => [{ 'x': 1 }]
       */
      var intersectionBy = baseRest(function(arrays) {
        var iteratee = last(arrays),
            mapped = arrayMap(arrays, castArrayLikeObject);
  
        if (iteratee === last(mapped)) {
          iteratee = undefined;
        } else {
          mapped.pop();
        }
        return (mapped.length && mapped[0] === arrays[0])
          ? baseIntersection(mapped, getIteratee(iteratee, 2))
          : [];
      });
  
      /**
       * This method is like `_.intersection` except that it accepts `comparator`
       * which is invoked to compare elements of `arrays`. The order and references
       * of result values are determined by the first array. The comparator is
       * invoked with two arguments: (arrVal, othVal).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {...Array} [arrays] The arrays to inspect.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns the new array of intersecting values.
       * @example
       *
       * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
       * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
       *
       * _.intersectionWith(objects, others, _.isEqual);
       * // => [{ 'x': 1, 'y': 2 }]
       */
      var intersectionWith = baseRest(function(arrays) {
        var comparator = last(arrays),
            mapped = arrayMap(arrays, castArrayLikeObject);
  
        comparator = typeof comparator == 'function' ? comparator : undefined;
        if (comparator) {
          mapped.pop();
        }
        return (mapped.length && mapped[0] === arrays[0])
          ? baseIntersection(mapped, undefined, comparator)
          : [];
      });
  
      /**
       * Converts all elements in `array` into a string separated by `separator`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to convert.
       * @param {string} [separator=','] The element separator.
       * @returns {string} Returns the joined string.
       * @example
       *
       * _.join(['a', 'b', 'c'], '~');
       * // => 'a~b~c'
       */
      function join(array, separator) {
        return array == null ? '' : nativeJoin.call(array, separator);
      }
  
      /**
       * Gets the last element of `array`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The array to query.
       * @returns {*} Returns the last element of `array`.
       * @example
       *
       * _.last([1, 2, 3]);
       * // => 3
       */
      function last(array) {
        var length = array == null ? 0 : array.length;
        return length ? array[length - 1] : undefined;
      }
  
      /**
       * This method is like `_.indexOf` except that it iterates over elements of
       * `array` from right to left.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {*} value The value to search for.
       * @param {number} [fromIndex=array.length-1] The index to search from.
       * @returns {number} Returns the index of the matched value, else `-1`.
       * @example
       *
       * _.lastIndexOf([1, 2, 1, 2], 2);
       * // => 3
       *
       * // Search from the `fromIndex`.
       * _.lastIndexOf([1, 2, 1, 2], 2, 2);
       * // => 1
       */
      function lastIndexOf(array, value, fromIndex) {
        var length = array == null ? 0 : array.length;
        if (!length) {
          return -1;
        }
        var index = length;
        if (fromIndex !== undefined) {
          index = toInteger(fromIndex);
          index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
        }
        return value === value
          ? strictLastIndexOf(array, value, index)
          : baseFindIndex(array, baseIsNaN, index, true);
      }
  
      /**
       * Gets the element at index `n` of `array`. If `n` is negative, the nth
       * element from the end is returned.
       *
       * @static
       * @memberOf _
       * @since 4.11.0
       * @category Array
       * @param {Array} array The array to query.
       * @param {number} [n=0] The index of the element to return.
       * @returns {*} Returns the nth element of `array`.
       * @example
       *
       * var array = ['a', 'b', 'c', 'd'];
       *
       * _.nth(array, 1);
       * // => 'b'
       *
       * _.nth(array, -2);
       * // => 'c';
       */
      function nth(array, n) {
        return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;
      }
  
      /**
       * Removes all given values from `array` using
       * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
       * for equality comparisons.
       *
       * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
       * to remove elements from an array by predicate.
       *
       * @static
       * @memberOf _
       * @since 2.0.0
       * @category Array
       * @param {Array} array The array to modify.
       * @param {...*} [values] The values to remove.
       * @returns {Array} Returns `array`.
       * @example
       *
       * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
       *
       * _.pull(array, 'a', 'c');
       * console.log(array);
       * // => ['b', 'b']
       */
      var pull = baseRest(pullAll);
  
      /**
       * This method is like `_.pull` except that it accepts an array of values to remove.
       *
       * **Note:** Unlike `_.difference`, this method mutates `array`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to modify.
       * @param {Array} values The values to remove.
       * @returns {Array} Returns `array`.
       * @example
       *
       * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
       *
       * _.pullAll(array, ['a', 'c']);
       * console.log(array);
       * // => ['b', 'b']
       */
      function pullAll(array, values) {
        return (array && array.length && values && values.length)
          ? basePullAll(array, values)
          : array;
      }
  
      /**
       * This method is like `_.pullAll` except that it accepts `iteratee` which is
       * invoked for each element of `array` and `values` to generate the criterion
       * by which they're compared. The iteratee is invoked with one argument: (value).
       *
       * **Note:** Unlike `_.differenceBy`, this method mutates `array`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to modify.
       * @param {Array} values The values to remove.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {Array} Returns `array`.
       * @example
       *
       * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
       *
       * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
       * console.log(array);
       * // => [{ 'x': 2 }]
       */
      function pullAllBy(array, values, iteratee) {
        return (array && array.length && values && values.length)
          ? basePullAll(array, values, getIteratee(iteratee, 2))
          : array;
      }
  
      /**
       * This method is like `_.pullAll` except that it accepts `comparator` which
       * is invoked to compare elements of `array` to `values`. The comparator is
       * invoked with two arguments: (arrVal, othVal).
       *
       * **Note:** Unlike `_.differenceWith`, this method mutates `array`.
       *
       * @static
       * @memberOf _
       * @since 4.6.0
       * @category Array
       * @param {Array} array The array to modify.
       * @param {Array} values The values to remove.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns `array`.
       * @example
       *
       * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
       *
       * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
       * console.log(array);
       * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
       */
      function pullAllWith(array, values, comparator) {
        return (array && array.length && values && values.length)
          ? basePullAll(array, values, undefined, comparator)
          : array;
      }
  
      /**
       * Removes elements from `array` corresponding to `indexes` and returns an
       * array of removed elements.
       *
       * **Note:** Unlike `_.at`, this method mutates `array`.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The array to modify.
       * @param {...(number|number[])} [indexes] The indexes of elements to remove.
       * @returns {Array} Returns the new array of removed elements.
       * @example
       *
       * var array = ['a', 'b', 'c', 'd'];
       * var pulled = _.pullAt(array, [1, 3]);
       *
       * console.log(array);
       * // => ['a', 'c']
       *
       * console.log(pulled);
       * // => ['b', 'd']
       */
      var pullAt = flatRest(function(array, indexes) {
        var length = array == null ? 0 : array.length,
            result = baseAt(array, indexes);
  
        basePullAt(array, arrayMap(indexes, function(index) {
          return isIndex(index, length) ? +index : index;
        }).sort(compareAscending));
  
        return result;
      });
  
      /**
       * Removes all elements from `array` that `predicate` returns truthy for
       * and returns an array of the removed elements. The predicate is invoked
       * with three arguments: (value, index, array).
       *
       * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
       * to pull elements from an array by value.
       *
       * @static
       * @memberOf _
       * @since 2.0.0
       * @category Array
       * @param {Array} array The array to modify.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the new array of removed elements.
       * @example
       *
       * var array = [1, 2, 3, 4];
       * var evens = _.remove(array, function(n) {
       *   return n % 2 == 0;
       * });
       *
       * console.log(array);
       * // => [1, 3]
       *
       * console.log(evens);
       * // => [2, 4]
       */
      function remove(array, predicate) {
        var result = [];
        if (!(array && array.length)) {
          return result;
        }
        var index = -1,
            indexes = [],
            length = array.length;
  
        predicate = getIteratee(predicate, 3);
        while (++index < length) {
          var value = array[index];
          if (predicate(value, index, array)) {
            result.push(value);
            indexes.push(index);
          }
        }
        basePullAt(array, indexes);
        return result;
      }
  
      /**
       * Reverses `array` so that the first element becomes the last, the second
       * element becomes the second to last, and so on.
       *
       * **Note:** This method mutates `array` and is based on
       * [`Array#reverse`](https://mdn.io/Array/reverse).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to modify.
       * @returns {Array} Returns `array`.
       * @example
       *
       * var array = [1, 2, 3];
       *
       * _.reverse(array);
       * // => [3, 2, 1]
       *
       * console.log(array);
       * // => [3, 2, 1]
       */
      function reverse(array) {
        return array == null ? array : nativeReverse.call(array);
      }
  
      /**
       * Creates a slice of `array` from `start` up to, but not including, `end`.
       *
       * **Note:** This method is used instead of
       * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
       * returned.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The array to slice.
       * @param {number} [start=0] The start position.
       * @param {number} [end=array.length] The end position.
       * @returns {Array} Returns the slice of `array`.
       */
      function slice(array, start, end) {
        var length = array == null ? 0 : array.length;
        if (!length) {
          return [];
        }
        if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
          start = 0;
          end = length;
        }
        else {
          start = start == null ? 0 : toInteger(start);
          end = end === undefined ? length : toInteger(end);
        }
        return baseSlice(array, start, end);
      }
  
      /**
       * Uses a binary search to determine the lowest index at which `value`
       * should be inserted into `array` in order to maintain its sort order.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The sorted array to inspect.
       * @param {*} value The value to evaluate.
       * @returns {number} Returns the index at which `value` should be inserted
       *  into `array`.
       * @example
       *
       * _.sortedIndex([30, 50], 40);
       * // => 1
       */
      function sortedIndex(array, value) {
        return baseSortedIndex(array, value);
      }
  
      /**
       * This method is like `_.sortedIndex` except that it accepts `iteratee`
       * which is invoked for `value` and each element of `array` to compute their
       * sort ranking. The iteratee is invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The sorted array to inspect.
       * @param {*} value The value to evaluate.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {number} Returns the index at which `value` should be inserted
       *  into `array`.
       * @example
       *
       * var objects = [{ 'x': 4 }, { 'x': 5 }];
       *
       * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
       * // => 0
       *
       * // The `_.property` iteratee shorthand.
       * _.sortedIndexBy(objects, { 'x': 4 }, 'x');
       * // => 0
       */
      function sortedIndexBy(array, value, iteratee) {
        return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));
      }
  
      /**
       * This method is like `_.indexOf` except that it performs a binary
       * search on a sorted `array`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {*} value The value to search for.
       * @returns {number} Returns the index of the matched value, else `-1`.
       * @example
       *
       * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
       * // => 1
       */
      function sortedIndexOf(array, value) {
        var length = array == null ? 0 : array.length;
        if (length) {
          var index = baseSortedIndex(array, value);
          if (index < length && eq(array[index], value)) {
            return index;
          }
        }
        return -1;
      }
  
      /**
       * This method is like `_.sortedIndex` except that it returns the highest
       * index at which `value` should be inserted into `array` in order to
       * maintain its sort order.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The sorted array to inspect.
       * @param {*} value The value to evaluate.
       * @returns {number} Returns the index at which `value` should be inserted
       *  into `array`.
       * @example
       *
       * _.sortedLastIndex([4, 5, 5, 5, 6], 5);
       * // => 4
       */
      function sortedLastIndex(array, value) {
        return baseSortedIndex(array, value, true);
      }
  
      /**
       * This method is like `_.sortedLastIndex` except that it accepts `iteratee`
       * which is invoked for `value` and each element of `array` to compute their
       * sort ranking. The iteratee is invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The sorted array to inspect.
       * @param {*} value The value to evaluate.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {number} Returns the index at which `value` should be inserted
       *  into `array`.
       * @example
       *
       * var objects = [{ 'x': 4 }, { 'x': 5 }];
       *
       * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
       * // => 1
       *
       * // The `_.property` iteratee shorthand.
       * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
       * // => 1
       */
      function sortedLastIndexBy(array, value, iteratee) {
        return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);
      }
  
      /**
       * This method is like `_.lastIndexOf` except that it performs a binary
       * search on a sorted `array`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {*} value The value to search for.
       * @returns {number} Returns the index of the matched value, else `-1`.
       * @example
       *
       * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
       * // => 3
       */
      function sortedLastIndexOf(array, value) {
        var length = array == null ? 0 : array.length;
        if (length) {
          var index = baseSortedIndex(array, value, true) - 1;
          if (eq(array[index], value)) {
            return index;
          }
        }
        return -1;
      }
  
      /**
       * This method is like `_.uniq` except that it's designed and optimized
       * for sorted arrays.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @returns {Array} Returns the new duplicate free array.
       * @example
       *
       * _.sortedUniq([1, 1, 2]);
       * // => [1, 2]
       */
      function sortedUniq(array) {
        return (array && array.length)
          ? baseSortedUniq(array)
          : [];
      }
  
      /**
       * This method is like `_.uniqBy` except that it's designed and optimized
       * for sorted arrays.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {Function} [iteratee] The iteratee invoked per element.
       * @returns {Array} Returns the new duplicate free array.
       * @example
       *
       * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
       * // => [1.1, 2.3]
       */
      function sortedUniqBy(array, iteratee) {
        return (array && array.length)
          ? baseSortedUniq(array, getIteratee(iteratee, 2))
          : [];
      }
  
      /**
       * Gets all but the first element of `array`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to query.
       * @returns {Array} Returns the slice of `array`.
       * @example
       *
       * _.tail([1, 2, 3]);
       * // => [2, 3]
       */
      function tail(array) {
        var length = array == null ? 0 : array.length;
        return length ? baseSlice(array, 1, length) : [];
      }
  
      /**
       * Creates a slice of `array` with `n` elements taken from the beginning.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The array to query.
       * @param {number} [n=1] The number of elements to take.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Array} Returns the slice of `array`.
       * @example
       *
       * _.take([1, 2, 3]);
       * // => [1]
       *
       * _.take([1, 2, 3], 2);
       * // => [1, 2]
       *
       * _.take([1, 2, 3], 5);
       * // => [1, 2, 3]
       *
       * _.take([1, 2, 3], 0);
       * // => []
       */
      function take(array, n, guard) {
        if (!(array && array.length)) {
          return [];
        }
        n = (guard || n === undefined) ? 1 : toInteger(n);
        return baseSlice(array, 0, n < 0 ? 0 : n);
      }
  
      /**
       * Creates a slice of `array` with `n` elements taken from the end.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The array to query.
       * @param {number} [n=1] The number of elements to take.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Array} Returns the slice of `array`.
       * @example
       *
       * _.takeRight([1, 2, 3]);
       * // => [3]
       *
       * _.takeRight([1, 2, 3], 2);
       * // => [2, 3]
       *
       * _.takeRight([1, 2, 3], 5);
       * // => [1, 2, 3]
       *
       * _.takeRight([1, 2, 3], 0);
       * // => []
       */
      function takeRight(array, n, guard) {
        var length = array == null ? 0 : array.length;
        if (!length) {
          return [];
        }
        n = (guard || n === undefined) ? 1 : toInteger(n);
        n = length - n;
        return baseSlice(array, n < 0 ? 0 : n, length);
      }
  
      /**
       * Creates a slice of `array` with elements taken from the end. Elements are
       * taken until `predicate` returns falsey. The predicate is invoked with
       * three arguments: (value, index, array).
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The array to query.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the slice of `array`.
       * @example
       *
       * var users = [
       *   { 'user': 'barney',  'active': true },
       *   { 'user': 'fred',    'active': false },
       *   { 'user': 'pebbles', 'active': false }
       * ];
       *
       * _.takeRightWhile(users, function(o) { return !o.active; });
       * // => objects for ['fred', 'pebbles']
       *
       * // The `_.matches` iteratee shorthand.
       * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
       * // => objects for ['pebbles']
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.takeRightWhile(users, ['active', false]);
       * // => objects for ['fred', 'pebbles']
       *
       * // The `_.property` iteratee shorthand.
       * _.takeRightWhile(users, 'active');
       * // => []
       */
      function takeRightWhile(array, predicate) {
        return (array && array.length)
          ? baseWhile(array, getIteratee(predicate, 3), false, true)
          : [];
      }
  
      /**
       * Creates a slice of `array` with elements taken from the beginning. Elements
       * are taken until `predicate` returns falsey. The predicate is invoked with
       * three arguments: (value, index, array).
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Array
       * @param {Array} array The array to query.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the slice of `array`.
       * @example
       *
       * var users = [
       *   { 'user': 'barney',  'active': false },
       *   { 'user': 'fred',    'active': false },
       *   { 'user': 'pebbles', 'active': true }
       * ];
       *
       * _.takeWhile(users, function(o) { return !o.active; });
       * // => objects for ['barney', 'fred']
       *
       * // The `_.matches` iteratee shorthand.
       * _.takeWhile(users, { 'user': 'barney', 'active': false });
       * // => objects for ['barney']
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.takeWhile(users, ['active', false]);
       * // => objects for ['barney', 'fred']
       *
       * // The `_.property` iteratee shorthand.
       * _.takeWhile(users, 'active');
       * // => []
       */
      function takeWhile(array, predicate) {
        return (array && array.length)
          ? baseWhile(array, getIteratee(predicate, 3))
          : [];
      }
  
      /**
       * Creates an array of unique values, in order, from all given arrays using
       * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
       * for equality comparisons.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {...Array} [arrays] The arrays to inspect.
       * @returns {Array} Returns the new array of combined values.
       * @example
       *
       * _.union([2], [1, 2]);
       * // => [2, 1]
       */
      var union = baseRest(function(arrays) {
        return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
      });
  
      /**
       * This method is like `_.union` except that it accepts `iteratee` which is
       * invoked for each element of each `arrays` to generate the criterion by
       * which uniqueness is computed. Result values are chosen from the first
       * array in which the value occurs. The iteratee is invoked with one argument:
       * (value).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {...Array} [arrays] The arrays to inspect.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {Array} Returns the new array of combined values.
       * @example
       *
       * _.unionBy([2.1], [1.2, 2.3], Math.floor);
       * // => [2.1, 1.2]
       *
       * // The `_.property` iteratee shorthand.
       * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
       * // => [{ 'x': 1 }, { 'x': 2 }]
       */
      var unionBy = baseRest(function(arrays) {
        var iteratee = last(arrays);
        if (isArrayLikeObject(iteratee)) {
          iteratee = undefined;
        }
        return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));
      });
  
      /**
       * This method is like `_.union` except that it accepts `comparator` which
       * is invoked to compare elements of `arrays`. Result values are chosen from
       * the first array in which the value occurs. The comparator is invoked
       * with two arguments: (arrVal, othVal).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {...Array} [arrays] The arrays to inspect.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns the new array of combined values.
       * @example
       *
       * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
       * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
       *
       * _.unionWith(objects, others, _.isEqual);
       * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
       */
      var unionWith = baseRest(function(arrays) {
        var comparator = last(arrays);
        comparator = typeof comparator == 'function' ? comparator : undefined;
        return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);
      });
  
      /**
       * Creates a duplicate-free version of an array, using
       * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
       * for equality comparisons, in which only the first occurrence of each element
       * is kept. The order of result values is determined by the order they occur
       * in the array.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @returns {Array} Returns the new duplicate free array.
       * @example
       *
       * _.uniq([2, 1, 2]);
       * // => [2, 1]
       */
      function uniq(array) {
        return (array && array.length) ? baseUniq(array) : [];
      }
  
      /**
       * This method is like `_.uniq` except that it accepts `iteratee` which is
       * invoked for each element in `array` to generate the criterion by which
       * uniqueness is computed. The order of result values is determined by the
       * order they occur in the array. The iteratee is invoked with one argument:
       * (value).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {Array} Returns the new duplicate free array.
       * @example
       *
       * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
       * // => [2.1, 1.2]
       *
       * // The `_.property` iteratee shorthand.
       * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
       * // => [{ 'x': 1 }, { 'x': 2 }]
       */
      function uniqBy(array, iteratee) {
        return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];
      }
  
      /**
       * This method is like `_.uniq` except that it accepts `comparator` which
       * is invoked to compare elements of `array`. The order of result values is
       * determined by the order they occur in the array.The comparator is invoked
       * with two arguments: (arrVal, othVal).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns the new duplicate free array.
       * @example
       *
       * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
       *
       * _.uniqWith(objects, _.isEqual);
       * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
       */
      function uniqWith(array, comparator) {
        comparator = typeof comparator == 'function' ? comparator : undefined;
        return (array && array.length) ? baseUniq(array, undefined, comparator) : [];
      }
  
      /**
       * This method is like `_.zip` except that it accepts an array of grouped
       * elements and creates an array regrouping the elements to their pre-zip
       * configuration.
       *
       * @static
       * @memberOf _
       * @since 1.2.0
       * @category Array
       * @param {Array} array The array of grouped elements to process.
       * @returns {Array} Returns the new array of regrouped elements.
       * @example
       *
       * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
       * // => [['a', 1, true], ['b', 2, false]]
       *
       * _.unzip(zipped);
       * // => [['a', 'b'], [1, 2], [true, false]]
       */
      function unzip(array) {
        if (!(array && array.length)) {
          return [];
        }
        var length = 0;
        array = arrayFilter(array, function(group) {
          if (isArrayLikeObject(group)) {
            length = nativeMax(group.length, length);
            return true;
          }
        });
        return baseTimes(length, function(index) {
          return arrayMap(array, baseProperty(index));
        });
      }
  
      /**
       * This method is like `_.unzip` except that it accepts `iteratee` to specify
       * how regrouped values should be combined. The iteratee is invoked with the
       * elements of each group: (...group).
       *
       * @static
       * @memberOf _
       * @since 3.8.0
       * @category Array
       * @param {Array} array The array of grouped elements to process.
       * @param {Function} [iteratee=_.identity] The function to combine
       *  regrouped values.
       * @returns {Array} Returns the new array of regrouped elements.
       * @example
       *
       * var zipped = _.zip([1, 2], [10, 20], [100, 200]);
       * // => [[1, 10, 100], [2, 20, 200]]
       *
       * _.unzipWith(zipped, _.add);
       * // => [3, 30, 300]
       */
      function unzipWith(array, iteratee) {
        if (!(array && array.length)) {
          return [];
        }
        var result = unzip(array);
        if (iteratee == null) {
          return result;
        }
        return arrayMap(result, function(group) {
          return apply(iteratee, undefined, group);
        });
      }
  
      /**
       * Creates an array excluding all given values using
       * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
       * for equality comparisons.
       *
       * **Note:** Unlike `_.pull`, this method returns a new array.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {Array} array The array to inspect.
       * @param {...*} [values] The values to exclude.
       * @returns {Array} Returns the new array of filtered values.
       * @see _.difference, _.xor
       * @example
       *
       * _.without([2, 1, 2, 3], 1, 2);
       * // => [3]
       */
      var without = baseRest(function(array, values) {
        return isArrayLikeObject(array)
          ? baseDifference(array, values)
          : [];
      });
  
      /**
       * Creates an array of unique values that is the
       * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
       * of the given arrays. The order of result values is determined by the order
       * they occur in the arrays.
       *
       * @static
       * @memberOf _
       * @since 2.4.0
       * @category Array
       * @param {...Array} [arrays] The arrays to inspect.
       * @returns {Array} Returns the new array of filtered values.
       * @see _.difference, _.without
       * @example
       *
       * _.xor([2, 1], [2, 3]);
       * // => [1, 3]
       */
      var xor = baseRest(function(arrays) {
        return baseXor(arrayFilter(arrays, isArrayLikeObject));
      });
  
      /**
       * This method is like `_.xor` except that it accepts `iteratee` which is
       * invoked for each element of each `arrays` to generate the criterion by
       * which by which they're compared. The order of result values is determined
       * by the order they occur in the arrays. The iteratee is invoked with one
       * argument: (value).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {...Array} [arrays] The arrays to inspect.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {Array} Returns the new array of filtered values.
       * @example
       *
       * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
       * // => [1.2, 3.4]
       *
       * // The `_.property` iteratee shorthand.
       * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
       * // => [{ 'x': 2 }]
       */
      var xorBy = baseRest(function(arrays) {
        var iteratee = last(arrays);
        if (isArrayLikeObject(iteratee)) {
          iteratee = undefined;
        }
        return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));
      });
  
      /**
       * This method is like `_.xor` except that it accepts `comparator` which is
       * invoked to compare elements of `arrays`. The order of result values is
       * determined by the order they occur in the arrays. The comparator is invoked
       * with two arguments: (arrVal, othVal).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Array
       * @param {...Array} [arrays] The arrays to inspect.
       * @param {Function} [comparator] The comparator invoked per element.
       * @returns {Array} Returns the new array of filtered values.
       * @example
       *
       * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
       * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
       *
       * _.xorWith(objects, others, _.isEqual);
       * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
       */
      var xorWith = baseRest(function(arrays) {
        var comparator = last(arrays);
        comparator = typeof comparator == 'function' ? comparator : undefined;
        return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);
      });
  
      /**
       * Creates an array of grouped elements, the first of which contains the
       * first elements of the given arrays, the second of which contains the
       * second elements of the given arrays, and so on.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Array
       * @param {...Array} [arrays] The arrays to process.
       * @returns {Array} Returns the new array of grouped elements.
       * @example
       *
       * _.zip(['a', 'b'], [1, 2], [true, false]);
       * // => [['a', 1, true], ['b', 2, false]]
       */
      var zip = baseRest(unzip);
  
      /**
       * This method is like `_.fromPairs` except that it accepts two arrays,
       * one of property identifiers and one of corresponding values.
       *
       * @static
       * @memberOf _
       * @since 0.4.0
       * @category Array
       * @param {Array} [props=[]] The property identifiers.
       * @param {Array} [values=[]] The property values.
       * @returns {Object} Returns the new object.
       * @example
       *
       * _.zipObject(['a', 'b'], [1, 2]);
       * // => { 'a': 1, 'b': 2 }
       */
      function zipObject(props, values) {
        return baseZipObject(props || [], values || [], assignValue);
      }
  
      /**
       * This method is like `_.zipObject` except that it supports property paths.
       *
       * @static
       * @memberOf _
       * @since 4.1.0
       * @category Array
       * @param {Array} [props=[]] The property identifiers.
       * @param {Array} [values=[]] The property values.
       * @returns {Object} Returns the new object.
       * @example
       *
       * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
       * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
       */
      function zipObjectDeep(props, values) {
        return baseZipObject(props || [], values || [], baseSet);
      }
  
      /**
       * This method is like `_.zip` except that it accepts `iteratee` to specify
       * how grouped values should be combined. The iteratee is invoked with the
       * elements of each group: (...group).
       *
       * @static
       * @memberOf _
       * @since 3.8.0
       * @category Array
       * @param {...Array} [arrays] The arrays to process.
       * @param {Function} [iteratee=_.identity] The function to combine
       *  grouped values.
       * @returns {Array} Returns the new array of grouped elements.
       * @example
       *
       * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
       *   return a + b + c;
       * });
       * // => [111, 222]
       */
      var zipWith = baseRest(function(arrays) {
        var length = arrays.length,
            iteratee = length > 1 ? arrays[length - 1] : undefined;
  
        iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
        return unzipWith(arrays, iteratee);
      });
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Creates a `lodash` wrapper instance that wraps `value` with explicit method
       * chain sequences enabled. The result of such sequences must be unwrapped
       * with `_#value`.
       *
       * @static
       * @memberOf _
       * @since 1.3.0
       * @category Seq
       * @param {*} value The value to wrap.
       * @returns {Object} Returns the new `lodash` wrapper instance.
       * @example
       *
       * var users = [
       *   { 'user': 'barney',  'age': 36 },
       *   { 'user': 'fred',    'age': 40 },
       *   { 'user': 'pebbles', 'age': 1 }
       * ];
       *
       * var youngest = _
       *   .chain(users)
       *   .sortBy('age')
       *   .map(function(o) {
       *     return o.user + ' is ' + o.age;
       *   })
       *   .head()
       *   .value();
       * // => 'pebbles is 1'
       */
      function chain(value) {
        var result = lodash(value);
        result.__chain__ = true;
        return result;
      }
  
      /**
       * This method invokes `interceptor` and returns `value`. The interceptor
       * is invoked with one argument; (value). The purpose of this method is to
       * "tap into" a method chain sequence in order to modify intermediate results.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Seq
       * @param {*} value The value to provide to `interceptor`.
       * @param {Function} interceptor The function to invoke.
       * @returns {*} Returns `value`.
       * @example
       *
       * _([1, 2, 3])
       *  .tap(function(array) {
       *    // Mutate input array.
       *    array.pop();
       *  })
       *  .reverse()
       *  .value();
       * // => [2, 1]
       */
      function tap(value, interceptor) {
        interceptor(value);
        return value;
      }
  
      /**
       * This method is like `_.tap` except that it returns the result of `interceptor`.
       * The purpose of this method is to "pass thru" values replacing intermediate
       * results in a method chain sequence.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Seq
       * @param {*} value The value to provide to `interceptor`.
       * @param {Function} interceptor The function to invoke.
       * @returns {*} Returns the result of `interceptor`.
       * @example
       *
       * _('  abc  ')
       *  .chain()
       *  .trim()
       *  .thru(function(value) {
       *    return [value];
       *  })
       *  .value();
       * // => ['abc']
       */
      function thru(value, interceptor) {
        return interceptor(value);
      }
  
      /**
       * This method is the wrapper version of `_.at`.
       *
       * @name at
       * @memberOf _
       * @since 1.0.0
       * @category Seq
       * @param {...(string|string[])} [paths] The property paths to pick.
       * @returns {Object} Returns the new `lodash` wrapper instance.
       * @example
       *
       * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
       *
       * _(object).at(['a[0].b.c', 'a[1]']).value();
       * // => [3, 4]
       */
      var wrapperAt = flatRest(function(paths) {
        var length = paths.length,
            start = length ? paths[0] : 0,
            value = this.__wrapped__,
            interceptor = function(object) { return baseAt(object, paths); };
  
        if (length > 1 || this.__actions__.length ||
            !(value instanceof LazyWrapper) || !isIndex(start)) {
          return this.thru(interceptor);
        }
        value = value.slice(start, +start + (length ? 1 : 0));
        value.__actions__.push({
          'func': thru,
          'args': [interceptor],
          'thisArg': undefined
        });
        return new LodashWrapper(value, this.__chain__).thru(function(array) {
          if (length && !array.length) {
            array.push(undefined);
          }
          return array;
        });
      });
  
      /**
       * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
       *
       * @name chain
       * @memberOf _
       * @since 0.1.0
       * @category Seq
       * @returns {Object} Returns the new `lodash` wrapper instance.
       * @example
       *
       * var users = [
       *   { 'user': 'barney', 'age': 36 },
       *   { 'user': 'fred',   'age': 40 }
       * ];
       *
       * // A sequence without explicit chaining.
       * _(users).head();
       * // => { 'user': 'barney', 'age': 36 }
       *
       * // A sequence with explicit chaining.
       * _(users)
       *   .chain()
       *   .head()
       *   .pick('user')
       *   .value();
       * // => { 'user': 'barney' }
       */
      function wrapperChain() {
        return chain(this);
      }
  
      /**
       * Executes the chain sequence and returns the wrapped result.
       *
       * @name commit
       * @memberOf _
       * @since 3.2.0
       * @category Seq
       * @returns {Object} Returns the new `lodash` wrapper instance.
       * @example
       *
       * var array = [1, 2];
       * var wrapped = _(array).push(3);
       *
       * console.log(array);
       * // => [1, 2]
       *
       * wrapped = wrapped.commit();
       * console.log(array);
       * // => [1, 2, 3]
       *
       * wrapped.last();
       * // => 3
       *
       * console.log(array);
       * // => [1, 2, 3]
       */
      function wrapperCommit() {
        return new LodashWrapper(this.value(), this.__chain__);
      }
  
      /**
       * Gets the next value on a wrapped object following the
       * [iterator protocol](https://mdn.io/iteration_protocols#iterator).
       *
       * @name next
       * @memberOf _
       * @since 4.0.0
       * @category Seq
       * @returns {Object} Returns the next iterator value.
       * @example
       *
       * var wrapped = _([1, 2]);
       *
       * wrapped.next();
       * // => { 'done': false, 'value': 1 }
       *
       * wrapped.next();
       * // => { 'done': false, 'value': 2 }
       *
       * wrapped.next();
       * // => { 'done': true, 'value': undefined }
       */
      function wrapperNext() {
        if (this.__values__ === undefined) {
          this.__values__ = toArray(this.value());
        }
        var done = this.__index__ >= this.__values__.length,
            value = done ? undefined : this.__values__[this.__index__++];
  
        return { 'done': done, 'value': value };
      }
  
      /**
       * Enables the wrapper to be iterable.
       *
       * @name Symbol.iterator
       * @memberOf _
       * @since 4.0.0
       * @category Seq
       * @returns {Object} Returns the wrapper object.
       * @example
       *
       * var wrapped = _([1, 2]);
       *
       * wrapped[Symbol.iterator]() === wrapped;
       * // => true
       *
       * Array.from(wrapped);
       * // => [1, 2]
       */
      function wrapperToIterator() {
        return this;
      }
  
      /**
       * Creates a clone of the chain sequence planting `value` as the wrapped value.
       *
       * @name plant
       * @memberOf _
       * @since 3.2.0
       * @category Seq
       * @param {*} value The value to plant.
       * @returns {Object} Returns the new `lodash` wrapper instance.
       * @example
       *
       * function square(n) {
       *   return n * n;
       * }
       *
       * var wrapped = _([1, 2]).map(square);
       * var other = wrapped.plant([3, 4]);
       *
       * other.value();
       * // => [9, 16]
       *
       * wrapped.value();
       * // => [1, 4]
       */
      function wrapperPlant(value) {
        var result,
            parent = this;
  
        while (parent instanceof baseLodash) {
          var clone = wrapperClone(parent);
          clone.__index__ = 0;
          clone.__values__ = undefined;
          if (result) {
            previous.__wrapped__ = clone;
          } else {
            result = clone;
          }
          var previous = clone;
          parent = parent.__wrapped__;
        }
        previous.__wrapped__ = value;
        return result;
      }
  
      /**
       * This method is the wrapper version of `_.reverse`.
       *
       * **Note:** This method mutates the wrapped array.
       *
       * @name reverse
       * @memberOf _
       * @since 0.1.0
       * @category Seq
       * @returns {Object} Returns the new `lodash` wrapper instance.
       * @example
       *
       * var array = [1, 2, 3];
       *
       * _(array).reverse().value()
       * // => [3, 2, 1]
       *
       * console.log(array);
       * // => [3, 2, 1]
       */
      function wrapperReverse() {
        var value = this.__wrapped__;
        if (value instanceof LazyWrapper) {
          var wrapped = value;
          if (this.__actions__.length) {
            wrapped = new LazyWrapper(this);
          }
          wrapped = wrapped.reverse();
          wrapped.__actions__.push({
            'func': thru,
            'args': [reverse],
            'thisArg': undefined
          });
          return new LodashWrapper(wrapped, this.__chain__);
        }
        return this.thru(reverse);
      }
  
      /**
       * Executes the chain sequence to resolve the unwrapped value.
       *
       * @name value
       * @memberOf _
       * @since 0.1.0
       * @alias toJSON, valueOf
       * @category Seq
       * @returns {*} Returns the resolved unwrapped value.
       * @example
       *
       * _([1, 2, 3]).value();
       * // => [1, 2, 3]
       */
      function wrapperValue() {
        return baseWrapperValue(this.__wrapped__, this.__actions__);
      }
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Creates an object composed of keys generated from the results of running
       * each element of `collection` thru `iteratee`. The corresponding value of
       * each key is the number of times the key was returned by `iteratee`. The
       * iteratee is invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 0.5.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
       * @returns {Object} Returns the composed aggregate object.
       * @example
       *
       * _.countBy([6.1, 4.2, 6.3], Math.floor);
       * // => { '4': 1, '6': 2 }
       *
       * // The `_.property` iteratee shorthand.
       * _.countBy(['one', 'two', 'three'], 'length');
       * // => { '3': 2, '5': 1 }
       */
      var countBy = createAggregator(function(result, value, key) {
        if (hasOwnProperty.call(result, key)) {
          ++result[key];
        } else {
          baseAssignValue(result, key, 1);
        }
      });
  
      /**
       * Checks if `predicate` returns truthy for **all** elements of `collection`.
       * Iteration is stopped once `predicate` returns falsey. The predicate is
       * invoked with three arguments: (value, index|key, collection).
       *
       * **Note:** This method returns `true` for
       * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
       * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
       * elements of empty collections.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {boolean} Returns `true` if all elements pass the predicate check,
       *  else `false`.
       * @example
       *
       * _.every([true, 1, null, 'yes'], Boolean);
       * // => false
       *
       * var users = [
       *   { 'user': 'barney', 'age': 36, 'active': false },
       *   { 'user': 'fred',   'age': 40, 'active': false }
       * ];
       *
       * // The `_.matches` iteratee shorthand.
       * _.every(users, { 'user': 'barney', 'active': false });
       * // => false
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.every(users, ['active', false]);
       * // => true
       *
       * // The `_.property` iteratee shorthand.
       * _.every(users, 'active');
       * // => false
       */
      function every(collection, predicate, guard) {
        var func = isArray(collection) ? arrayEvery : baseEvery;
        if (guard && isIterateeCall(collection, predicate, guard)) {
          predicate = undefined;
        }
        return func(collection, getIteratee(predicate, 3));
      }
  
      /**
       * Iterates over elements of `collection`, returning an array of all elements
       * `predicate` returns truthy for. The predicate is invoked with three
       * arguments: (value, index|key, collection).
       *
       * **Note:** Unlike `_.remove`, this method returns a new array.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the new filtered array.
       * @see _.reject
       * @example
       *
       * var users = [
       *   { 'user': 'barney', 'age': 36, 'active': true },
       *   { 'user': 'fred',   'age': 40, 'active': false }
       * ];
       *
       * _.filter(users, function(o) { return !o.active; });
       * // => objects for ['fred']
       *
       * // The `_.matches` iteratee shorthand.
       * _.filter(users, { 'age': 36, 'active': true });
       * // => objects for ['barney']
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.filter(users, ['active', false]);
       * // => objects for ['fred']
       *
       * // The `_.property` iteratee shorthand.
       * _.filter(users, 'active');
       * // => objects for ['barney']
       *
       * // Combining several predicates using `_.overEvery` or `_.overSome`.
       * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));
       * // => objects for ['fred', 'barney']
       */
      function filter(collection, predicate) {
        var func = isArray(collection) ? arrayFilter : baseFilter;
        return func(collection, getIteratee(predicate, 3));
      }
  
      /**
       * Iterates over elements of `collection`, returning the first element
       * `predicate` returns truthy for. The predicate is invoked with three
       * arguments: (value, index|key, collection).
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to inspect.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @param {number} [fromIndex=0] The index to search from.
       * @returns {*} Returns the matched element, else `undefined`.
       * @example
       *
       * var users = [
       *   { 'user': 'barney',  'age': 36, 'active': true },
       *   { 'user': 'fred',    'age': 40, 'active': false },
       *   { 'user': 'pebbles', 'age': 1,  'active': true }
       * ];
       *
       * _.find(users, function(o) { return o.age < 40; });
       * // => object for 'barney'
       *
       * // The `_.matches` iteratee shorthand.
       * _.find(users, { 'age': 1, 'active': true });
       * // => object for 'pebbles'
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.find(users, ['active', false]);
       * // => object for 'fred'
       *
       * // The `_.property` iteratee shorthand.
       * _.find(users, 'active');
       * // => object for 'barney'
       */
      var find = createFind(findIndex);
  
      /**
       * This method is like `_.find` except that it iterates over elements of
       * `collection` from right to left.
       *
       * @static
       * @memberOf _
       * @since 2.0.0
       * @category Collection
       * @param {Array|Object} collection The collection to inspect.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @param {number} [fromIndex=collection.length-1] The index to search from.
       * @returns {*} Returns the matched element, else `undefined`.
       * @example
       *
       * _.findLast([1, 2, 3, 4], function(n) {
       *   return n % 2 == 1;
       * });
       * // => 3
       */
      var findLast = createFind(findLastIndex);
  
      /**
       * Creates a flattened array of values by running each element in `collection`
       * thru `iteratee` and flattening the mapped results. The iteratee is invoked
       * with three arguments: (value, index|key, collection).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the new flattened array.
       * @example
       *
       * function duplicate(n) {
       *   return [n, n];
       * }
       *
       * _.flatMap([1, 2], duplicate);
       * // => [1, 1, 2, 2]
       */
      function flatMap(collection, iteratee) {
        return baseFlatten(map(collection, iteratee), 1);
      }
  
      /**
       * This method is like `_.flatMap` except that it recursively flattens the
       * mapped results.
       *
       * @static
       * @memberOf _
       * @since 4.7.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the new flattened array.
       * @example
       *
       * function duplicate(n) {
       *   return [[[n, n]]];
       * }
       *
       * _.flatMapDeep([1, 2], duplicate);
       * // => [1, 1, 2, 2]
       */
      function flatMapDeep(collection, iteratee) {
        return baseFlatten(map(collection, iteratee), INFINITY);
      }
  
      /**
       * This method is like `_.flatMap` except that it recursively flattens the
       * mapped results up to `depth` times.
       *
       * @static
       * @memberOf _
       * @since 4.7.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @param {number} [depth=1] The maximum recursion depth.
       * @returns {Array} Returns the new flattened array.
       * @example
       *
       * function duplicate(n) {
       *   return [[[n, n]]];
       * }
       *
       * _.flatMapDepth([1, 2], duplicate, 2);
       * // => [[1, 1], [2, 2]]
       */
      function flatMapDepth(collection, iteratee, depth) {
        depth = depth === undefined ? 1 : toInteger(depth);
        return baseFlatten(map(collection, iteratee), depth);
      }
  
      /**
       * Iterates over elements of `collection` and invokes `iteratee` for each element.
       * The iteratee is invoked with three arguments: (value, index|key, collection).
       * Iteratee functions may exit iteration early by explicitly returning `false`.
       *
       * **Note:** As with other "Collections" methods, objects with a "length"
       * property are iterated like arrays. To avoid this behavior use `_.forIn`
       * or `_.forOwn` for object iteration.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @alias each
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Array|Object} Returns `collection`.
       * @see _.forEachRight
       * @example
       *
       * _.forEach([1, 2], function(value) {
       *   console.log(value);
       * });
       * // => Logs `1` then `2`.
       *
       * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
       *   console.log(key);
       * });
       * // => Logs 'a' then 'b' (iteration order is not guaranteed).
       */
      function forEach(collection, iteratee) {
        var func = isArray(collection) ? arrayEach : baseEach;
        return func(collection, getIteratee(iteratee, 3));
      }
  
      /**
       * This method is like `_.forEach` except that it iterates over elements of
       * `collection` from right to left.
       *
       * @static
       * @memberOf _
       * @since 2.0.0
       * @alias eachRight
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Array|Object} Returns `collection`.
       * @see _.forEach
       * @example
       *
       * _.forEachRight([1, 2], function(value) {
       *   console.log(value);
       * });
       * // => Logs `2` then `1`.
       */
      function forEachRight(collection, iteratee) {
        var func = isArray(collection) ? arrayEachRight : baseEachRight;
        return func(collection, getIteratee(iteratee, 3));
      }
  
      /**
       * Creates an object composed of keys generated from the results of running
       * each element of `collection` thru `iteratee`. The order of grouped values
       * is determined by the order they occur in `collection`. The corresponding
       * value of each key is an array of elements responsible for generating the
       * key. The iteratee is invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
       * @returns {Object} Returns the composed aggregate object.
       * @example
       *
       * _.groupBy([6.1, 4.2, 6.3], Math.floor);
       * // => { '4': [4.2], '6': [6.1, 6.3] }
       *
       * // The `_.property` iteratee shorthand.
       * _.groupBy(['one', 'two', 'three'], 'length');
       * // => { '3': ['one', 'two'], '5': ['three'] }
       */
      var groupBy = createAggregator(function(result, value, key) {
        if (hasOwnProperty.call(result, key)) {
          result[key].push(value);
        } else {
          baseAssignValue(result, key, [value]);
        }
      });
  
      /**
       * Checks if `value` is in `collection`. If `collection` is a string, it's
       * checked for a substring of `value`, otherwise
       * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
       * is used for equality comparisons. If `fromIndex` is negative, it's used as
       * the offset from the end of `collection`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object|string} collection The collection to inspect.
       * @param {*} value The value to search for.
       * @param {number} [fromIndex=0] The index to search from.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
       * @returns {boolean} Returns `true` if `value` is found, else `false`.
       * @example
       *
       * _.includes([1, 2, 3], 1);
       * // => true
       *
       * _.includes([1, 2, 3], 1, 2);
       * // => false
       *
       * _.includes({ 'a': 1, 'b': 2 }, 1);
       * // => true
       *
       * _.includes('abcd', 'bc');
       * // => true
       */
      function includes(collection, value, fromIndex, guard) {
        collection = isArrayLike(collection) ? collection : values(collection);
        fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;
  
        var length = collection.length;
        if (fromIndex < 0) {
          fromIndex = nativeMax(length + fromIndex, 0);
        }
        return isString(collection)
          ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
          : (!!length && baseIndexOf(collection, value, fromIndex) > -1);
      }
  
      /**
       * Invokes the method at `path` of each element in `collection`, returning
       * an array of the results of each invoked method. Any additional arguments
       * are provided to each invoked method. If `path` is a function, it's invoked
       * for, and `this` bound to, each element in `collection`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Array|Function|string} path The path of the method to invoke or
       *  the function invoked per iteration.
       * @param {...*} [args] The arguments to invoke each method with.
       * @returns {Array} Returns the array of results.
       * @example
       *
       * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
       * // => [[1, 5, 7], [1, 2, 3]]
       *
       * _.invokeMap([123, 456], String.prototype.split, '');
       * // => [['1', '2', '3'], ['4', '5', '6']]
       */
      var invokeMap = baseRest(function(collection, path, args) {
        var index = -1,
            isFunc = typeof path == 'function',
            result = isArrayLike(collection) ? Array(collection.length) : [];
  
        baseEach(collection, function(value) {
          result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
        });
        return result;
      });
  
      /**
       * Creates an object composed of keys generated from the results of running
       * each element of `collection` thru `iteratee`. The corresponding value of
       * each key is the last element responsible for generating the key. The
       * iteratee is invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
       * @returns {Object} Returns the composed aggregate object.
       * @example
       *
       * var array = [
       *   { 'dir': 'left', 'code': 97 },
       *   { 'dir': 'right', 'code': 100 }
       * ];
       *
       * _.keyBy(array, function(o) {
       *   return String.fromCharCode(o.code);
       * });
       * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
       *
       * _.keyBy(array, 'dir');
       * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
       */
      var keyBy = createAggregator(function(result, value, key) {
        baseAssignValue(result, key, value);
      });
  
      /**
       * Creates an array of values by running each element in `collection` thru
       * `iteratee`. The iteratee is invoked with three arguments:
       * (value, index|key, collection).
       *
       * Many lodash methods are guarded to work as iteratees for methods like
       * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
       *
       * The guarded methods are:
       * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
       * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
       * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
       * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the new mapped array.
       * @example
       *
       * function square(n) {
       *   return n * n;
       * }
       *
       * _.map([4, 8], square);
       * // => [16, 64]
       *
       * _.map({ 'a': 4, 'b': 8 }, square);
       * // => [16, 64] (iteration order is not guaranteed)
       *
       * var users = [
       *   { 'user': 'barney' },
       *   { 'user': 'fred' }
       * ];
       *
       * // The `_.property` iteratee shorthand.
       * _.map(users, 'user');
       * // => ['barney', 'fred']
       */
      function map(collection, iteratee) {
        var func = isArray(collection) ? arrayMap : baseMap;
        return func(collection, getIteratee(iteratee, 3));
      }
  
      /**
       * This method is like `_.sortBy` except that it allows specifying the sort
       * orders of the iteratees to sort by. If `orders` is unspecified, all values
       * are sorted in ascending order. Otherwise, specify an order of "desc" for
       * descending or "asc" for ascending sort order of corresponding values.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
       *  The iteratees to sort by.
       * @param {string[]} [orders] The sort orders of `iteratees`.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
       * @returns {Array} Returns the new sorted array.
       * @example
       *
       * var users = [
       *   { 'user': 'fred',   'age': 48 },
       *   { 'user': 'barney', 'age': 34 },
       *   { 'user': 'fred',   'age': 40 },
       *   { 'user': 'barney', 'age': 36 }
       * ];
       *
       * // Sort by `user` in ascending order and by `age` in descending order.
       * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
       * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
       */
      function orderBy(collection, iteratees, orders, guard) {
        if (collection == null) {
          return [];
        }
        if (!isArray(iteratees)) {
          iteratees = iteratees == null ? [] : [iteratees];
        }
        orders = guard ? undefined : orders;
        if (!isArray(orders)) {
          orders = orders == null ? [] : [orders];
        }
        return baseOrderBy(collection, iteratees, orders);
      }
  
      /**
       * Creates an array of elements split into two groups, the first of which
       * contains elements `predicate` returns truthy for, the second of which
       * contains elements `predicate` returns falsey for. The predicate is
       * invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the array of grouped elements.
       * @example
       *
       * var users = [
       *   { 'user': 'barney',  'age': 36, 'active': false },
       *   { 'user': 'fred',    'age': 40, 'active': true },
       *   { 'user': 'pebbles', 'age': 1,  'active': false }
       * ];
       *
       * _.partition(users, function(o) { return o.active; });
       * // => objects for [['fred'], ['barney', 'pebbles']]
       *
       * // The `_.matches` iteratee shorthand.
       * _.partition(users, { 'age': 1, 'active': false });
       * // => objects for [['pebbles'], ['barney', 'fred']]
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.partition(users, ['active', false]);
       * // => objects for [['barney', 'pebbles'], ['fred']]
       *
       * // The `_.property` iteratee shorthand.
       * _.partition(users, 'active');
       * // => objects for [['fred'], ['barney', 'pebbles']]
       */
      var partition = createAggregator(function(result, value, key) {
        result[key ? 0 : 1].push(value);
      }, function() { return [[], []]; });
  
      /**
       * Reduces `collection` to a value which is the accumulated result of running
       * each element in `collection` thru `iteratee`, where each successive
       * invocation is supplied the return value of the previous. If `accumulator`
       * is not given, the first element of `collection` is used as the initial
       * value. The iteratee is invoked with four arguments:
       * (accumulator, value, index|key, collection).
       *
       * Many lodash methods are guarded to work as iteratees for methods like
       * `_.reduce`, `_.reduceRight`, and `_.transform`.
       *
       * The guarded methods are:
       * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
       * and `sortBy`
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @param {*} [accumulator] The initial value.
       * @returns {*} Returns the accumulated value.
       * @see _.reduceRight
       * @example
       *
       * _.reduce([1, 2], function(sum, n) {
       *   return sum + n;
       * }, 0);
       * // => 3
       *
       * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
       *   (result[value] || (result[value] = [])).push(key);
       *   return result;
       * }, {});
       * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
       */
      function reduce(collection, iteratee, accumulator) {
        var func = isArray(collection) ? arrayReduce : baseReduce,
            initAccum = arguments.length < 3;
  
        return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
      }
  
      /**
       * This method is like `_.reduce` except that it iterates over elements of
       * `collection` from right to left.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @param {*} [accumulator] The initial value.
       * @returns {*} Returns the accumulated value.
       * @see _.reduce
       * @example
       *
       * var array = [[0, 1], [2, 3], [4, 5]];
       *
       * _.reduceRight(array, function(flattened, other) {
       *   return flattened.concat(other);
       * }, []);
       * // => [4, 5, 2, 3, 0, 1]
       */
      function reduceRight(collection, iteratee, accumulator) {
        var func = isArray(collection) ? arrayReduceRight : baseReduce,
            initAccum = arguments.length < 3;
  
        return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
      }
  
      /**
       * The opposite of `_.filter`; this method returns the elements of `collection`
       * that `predicate` does **not** return truthy for.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the new filtered array.
       * @see _.filter
       * @example
       *
       * var users = [
       *   { 'user': 'barney', 'age': 36, 'active': false },
       *   { 'user': 'fred',   'age': 40, 'active': true }
       * ];
       *
       * _.reject(users, function(o) { return !o.active; });
       * // => objects for ['fred']
       *
       * // The `_.matches` iteratee shorthand.
       * _.reject(users, { 'age': 40, 'active': true });
       * // => objects for ['barney']
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.reject(users, ['active', false]);
       * // => objects for ['fred']
       *
       * // The `_.property` iteratee shorthand.
       * _.reject(users, 'active');
       * // => objects for ['barney']
       */
      function reject(collection, predicate) {
        var func = isArray(collection) ? arrayFilter : baseFilter;
        return func(collection, negate(getIteratee(predicate, 3)));
      }
  
      /**
       * Gets a random element from `collection`.
       *
       * @static
       * @memberOf _
       * @since 2.0.0
       * @category Collection
       * @param {Array|Object} collection The collection to sample.
       * @returns {*} Returns the random element.
       * @example
       *
       * _.sample([1, 2, 3, 4]);
       * // => 2
       */
      function sample(collection) {
        var func = isArray(collection) ? arraySample : baseSample;
        return func(collection);
      }
  
      /**
       * Gets `n` random elements at unique keys from `collection` up to the
       * size of `collection`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Collection
       * @param {Array|Object} collection The collection to sample.
       * @param {number} [n=1] The number of elements to sample.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Array} Returns the random elements.
       * @example
       *
       * _.sampleSize([1, 2, 3], 2);
       * // => [3, 1]
       *
       * _.sampleSize([1, 2, 3], 4);
       * // => [2, 3, 1]
       */
      function sampleSize(collection, n, guard) {
        if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
          n = 1;
        } else {
          n = toInteger(n);
        }
        var func = isArray(collection) ? arraySampleSize : baseSampleSize;
        return func(collection, n);
      }
  
      /**
       * Creates an array of shuffled values, using a version of the
       * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to shuffle.
       * @returns {Array} Returns the new shuffled array.
       * @example
       *
       * _.shuffle([1, 2, 3, 4]);
       * // => [4, 1, 3, 2]
       */
      function shuffle(collection) {
        var func = isArray(collection) ? arrayShuffle : baseShuffle;
        return func(collection);
      }
  
      /**
       * Gets the size of `collection` by returning its length for array-like
       * values or the number of own enumerable string keyed properties for objects.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object|string} collection The collection to inspect.
       * @returns {number} Returns the collection size.
       * @example
       *
       * _.size([1, 2, 3]);
       * // => 3
       *
       * _.size({ 'a': 1, 'b': 2 });
       * // => 2
       *
       * _.size('pebbles');
       * // => 7
       */
      function size(collection) {
        if (collection == null) {
          return 0;
        }
        if (isArrayLike(collection)) {
          return isString(collection) ? stringSize(collection) : collection.length;
        }
        var tag = getTag(collection);
        if (tag == mapTag || tag == setTag) {
          return collection.size;
        }
        return baseKeys(collection).length;
      }
  
      /**
       * Checks if `predicate` returns truthy for **any** element of `collection`.
       * Iteration is stopped once `predicate` returns truthy. The predicate is
       * invoked with three arguments: (value, index|key, collection).
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {boolean} Returns `true` if any element passes the predicate check,
       *  else `false`.
       * @example
       *
       * _.some([null, 0, 'yes', false], Boolean);
       * // => true
       *
       * var users = [
       *   { 'user': 'barney', 'active': true },
       *   { 'user': 'fred',   'active': false }
       * ];
       *
       * // The `_.matches` iteratee shorthand.
       * _.some(users, { 'user': 'barney', 'active': false });
       * // => false
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.some(users, ['active', false]);
       * // => true
       *
       * // The `_.property` iteratee shorthand.
       * _.some(users, 'active');
       * // => true
       */
      function some(collection, predicate, guard) {
        var func = isArray(collection) ? arraySome : baseSome;
        if (guard && isIterateeCall(collection, predicate, guard)) {
          predicate = undefined;
        }
        return func(collection, getIteratee(predicate, 3));
      }
  
      /**
       * Creates an array of elements, sorted in ascending order by the results of
       * running each element in a collection thru each iteratee. This method
       * performs a stable sort, that is, it preserves the original sort order of
       * equal elements. The iteratees are invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Collection
       * @param {Array|Object} collection The collection to iterate over.
       * @param {...(Function|Function[])} [iteratees=[_.identity]]
       *  The iteratees to sort by.
       * @returns {Array} Returns the new sorted array.
       * @example
       *
       * var users = [
       *   { 'user': 'fred',   'age': 48 },
       *   { 'user': 'barney', 'age': 36 },
       *   { 'user': 'fred',   'age': 30 },
       *   { 'user': 'barney', 'age': 34 }
       * ];
       *
       * _.sortBy(users, [function(o) { return o.user; }]);
       * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]
       *
       * _.sortBy(users, ['user', 'age']);
       * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]
       */
      var sortBy = baseRest(function(collection, iteratees) {
        if (collection == null) {
          return [];
        }
        var length = iteratees.length;
        if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
          iteratees = [];
        } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
          iteratees = [iteratees[0]];
        }
        return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
      });
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Gets the timestamp of the number of milliseconds that have elapsed since
       * the Unix epoch (1 January 1970 00:00:00 UTC).
       *
       * @static
       * @memberOf _
       * @since 2.4.0
       * @category Date
       * @returns {number} Returns the timestamp.
       * @example
       *
       * _.defer(function(stamp) {
       *   console.log(_.now() - stamp);
       * }, _.now());
       * // => Logs the number of milliseconds it took for the deferred invocation.
       */
      var now = ctxNow || function() {
        return root.Date.now();
      };
  
      /*------------------------------------------------------------------------*/
  
      /**
       * The opposite of `_.before`; this method creates a function that invokes
       * `func` once it's called `n` or more times.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Function
       * @param {number} n The number of calls before `func` is invoked.
       * @param {Function} func The function to restrict.
       * @returns {Function} Returns the new restricted function.
       * @example
       *
       * var saves = ['profile', 'settings'];
       *
       * var done = _.after(saves.length, function() {
       *   console.log('done saving!');
       * });
       *
       * _.forEach(saves, function(type) {
       *   asyncSave({ 'type': type, 'complete': done });
       * });
       * // => Logs 'done saving!' after the two async saves have completed.
       */
      function after(n, func) {
        if (typeof func != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        n = toInteger(n);
        return function() {
          if (--n < 1) {
            return func.apply(this, arguments);
          }
        };
      }
  
      /**
       * Creates a function that invokes `func`, with up to `n` arguments,
       * ignoring any additional arguments.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Function
       * @param {Function} func The function to cap arguments for.
       * @param {number} [n=func.length] The arity cap.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Function} Returns the new capped function.
       * @example
       *
       * _.map(['6', '8', '10'], _.ary(parseInt, 1));
       * // => [6, 8, 10]
       */
      function ary(func, n, guard) {
        n = guard ? undefined : n;
        n = (func && n == null) ? func.length : n;
        return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
      }
  
      /**
       * Creates a function that invokes `func`, with the `this` binding and arguments
       * of the created function, while it's called less than `n` times. Subsequent
       * calls to the created function return the result of the last `func` invocation.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Function
       * @param {number} n The number of calls at which `func` is no longer invoked.
       * @param {Function} func The function to restrict.
       * @returns {Function} Returns the new restricted function.
       * @example
       *
       * jQuery(element).on('click', _.before(5, addContactToList));
       * // => Allows adding up to 4 contacts to the list.
       */
      function before(n, func) {
        var result;
        if (typeof func != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        n = toInteger(n);
        return function() {
          if (--n > 0) {
            result = func.apply(this, arguments);
          }
          if (n <= 1) {
            func = undefined;
          }
          return result;
        };
      }
  
      /**
       * Creates a function that invokes `func` with the `this` binding of `thisArg`
       * and `partials` prepended to the arguments it receives.
       *
       * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
       * may be used as a placeholder for partially applied arguments.
       *
       * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
       * property of bound functions.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Function
       * @param {Function} func The function to bind.
       * @param {*} thisArg The `this` binding of `func`.
       * @param {...*} [partials] The arguments to be partially applied.
       * @returns {Function} Returns the new bound function.
       * @example
       *
       * function greet(greeting, punctuation) {
       *   return greeting + ' ' + this.user + punctuation;
       * }
       *
       * var object = { 'user': 'fred' };
       *
       * var bound = _.bind(greet, object, 'hi');
       * bound('!');
       * // => 'hi fred!'
       *
       * // Bound with placeholders.
       * var bound = _.bind(greet, object, _, '!');
       * bound('hi');
       * // => 'hi fred!'
       */
      var bind = baseRest(function(func, thisArg, partials) {
        var bitmask = WRAP_BIND_FLAG;
        if (partials.length) {
          var holders = replaceHolders(partials, getHolder(bind));
          bitmask |= WRAP_PARTIAL_FLAG;
        }
        return createWrap(func, bitmask, thisArg, partials, holders);
      });
  
      /**
       * Creates a function that invokes the method at `object[key]` with `partials`
       * prepended to the arguments it receives.
       *
       * This method differs from `_.bind` by allowing bound functions to reference
       * methods that may be redefined or don't yet exist. See
       * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
       * for more details.
       *
       * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
       * builds, may be used as a placeholder for partially applied arguments.
       *
       * @static
       * @memberOf _
       * @since 0.10.0
       * @category Function
       * @param {Object} object The object to invoke the method on.
       * @param {string} key The key of the method.
       * @param {...*} [partials] The arguments to be partially applied.
       * @returns {Function} Returns the new bound function.
       * @example
       *
       * var object = {
       *   'user': 'fred',
       *   'greet': function(greeting, punctuation) {
       *     return greeting + ' ' + this.user + punctuation;
       *   }
       * };
       *
       * var bound = _.bindKey(object, 'greet', 'hi');
       * bound('!');
       * // => 'hi fred!'
       *
       * object.greet = function(greeting, punctuation) {
       *   return greeting + 'ya ' + this.user + punctuation;
       * };
       *
       * bound('!');
       * // => 'hiya fred!'
       *
       * // Bound with placeholders.
       * var bound = _.bindKey(object, 'greet', _, '!');
       * bound('hi');
       * // => 'hiya fred!'
       */
      var bindKey = baseRest(function(object, key, partials) {
        var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
        if (partials.length) {
          var holders = replaceHolders(partials, getHolder(bindKey));
          bitmask |= WRAP_PARTIAL_FLAG;
        }
        return createWrap(key, bitmask, object, partials, holders);
      });
  
      /**
       * Creates a function that accepts arguments of `func` and either invokes
       * `func` returning its result, if at least `arity` number of arguments have
       * been provided, or returns a function that accepts the remaining `func`
       * arguments, and so on. The arity of `func` may be specified if `func.length`
       * is not sufficient.
       *
       * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
       * may be used as a placeholder for provided arguments.
       *
       * **Note:** This method doesn't set the "length" property of curried functions.
       *
       * @static
       * @memberOf _
       * @since 2.0.0
       * @category Function
       * @param {Function} func The function to curry.
       * @param {number} [arity=func.length] The arity of `func`.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Function} Returns the new curried function.
       * @example
       *
       * var abc = function(a, b, c) {
       *   return [a, b, c];
       * };
       *
       * var curried = _.curry(abc);
       *
       * curried(1)(2)(3);
       * // => [1, 2, 3]
       *
       * curried(1, 2)(3);
       * // => [1, 2, 3]
       *
       * curried(1, 2, 3);
       * // => [1, 2, 3]
       *
       * // Curried with placeholders.
       * curried(1)(_, 3)(2);
       * // => [1, 2, 3]
       */
      function curry(func, arity, guard) {
        arity = guard ? undefined : arity;
        var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
        result.placeholder = curry.placeholder;
        return result;
      }
  
      /**
       * This method is like `_.curry` except that arguments are applied to `func`
       * in the manner of `_.partialRight` instead of `_.partial`.
       *
       * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
       * builds, may be used as a placeholder for provided arguments.
       *
       * **Note:** This method doesn't set the "length" property of curried functions.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Function
       * @param {Function} func The function to curry.
       * @param {number} [arity=func.length] The arity of `func`.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Function} Returns the new curried function.
       * @example
       *
       * var abc = function(a, b, c) {
       *   return [a, b, c];
       * };
       *
       * var curried = _.curryRight(abc);
       *
       * curried(3)(2)(1);
       * // => [1, 2, 3]
       *
       * curried(2, 3)(1);
       * // => [1, 2, 3]
       *
       * curried(1, 2, 3);
       * // => [1, 2, 3]
       *
       * // Curried with placeholders.
       * curried(3)(1, _)(2);
       * // => [1, 2, 3]
       */
      function curryRight(func, arity, guard) {
        arity = guard ? undefined : arity;
        var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
        result.placeholder = curryRight.placeholder;
        return result;
      }
  
      /**
       * Creates a debounced function that delays invoking `func` until after `wait`
       * milliseconds have elapsed since the last time the debounced function was
       * invoked. The debounced function comes with a `cancel` method to cancel
       * delayed `func` invocations and a `flush` method to immediately invoke them.
       * Provide `options` to indicate whether `func` should be invoked on the
       * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
       * with the last arguments provided to the debounced function. Subsequent
       * calls to the debounced function return the result of the last `func`
       * invocation.
       *
       * **Note:** If `leading` and `trailing` options are `true`, `func` is
       * invoked on the trailing edge of the timeout only if the debounced function
       * is invoked more than once during the `wait` timeout.
       *
       * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
       * until to the next tick, similar to `setTimeout` with a timeout of `0`.
       *
       * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
       * for details over the differences between `_.debounce` and `_.throttle`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Function
       * @param {Function} func The function to debounce.
       * @param {number} [wait=0] The number of milliseconds to delay.
       * @param {Object} [options={}] The options object.
       * @param {boolean} [options.leading=false]
       *  Specify invoking on the leading edge of the timeout.
       * @param {number} [options.maxWait]
       *  The maximum time `func` is allowed to be delayed before it's invoked.
       * @param {boolean} [options.trailing=true]
       *  Specify invoking on the trailing edge of the timeout.
       * @returns {Function} Returns the new debounced function.
       * @example
       *
       * // Avoid costly calculations while the window size is in flux.
       * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
       *
       * // Invoke `sendMail` when clicked, debouncing subsequent calls.
       * jQuery(element).on('click', _.debounce(sendMail, 300, {
       *   'leading': true,
       *   'trailing': false
       * }));
       *
       * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
       * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
       * var source = new EventSource('/stream');
       * jQuery(source).on('message', debounced);
       *
       * // Cancel the trailing debounced invocation.
       * jQuery(window).on('popstate', debounced.cancel);
       */
      function debounce(func, wait, options) {
        var lastArgs,
            lastThis,
            maxWait,
            result,
            timerId,
            lastCallTime,
            lastInvokeTime = 0,
            leading = false,
            maxing = false,
            trailing = true;
  
        if (typeof func != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        wait = toNumber(wait) || 0;
        if (isObject(options)) {
          leading = !!options.leading;
          maxing = 'maxWait' in options;
          maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
          trailing = 'trailing' in options ? !!options.trailing : trailing;
        }
  
        function invokeFunc(time) {
          var args = lastArgs,
              thisArg = lastThis;
  
          lastArgs = lastThis = undefined;
          lastInvokeTime = time;
          result = func.apply(thisArg, args);
          return result;
        }
  
        function leadingEdge(time) {
          // Reset any `maxWait` timer.
          lastInvokeTime = time;
          // Start the timer for the trailing edge.
          timerId = setTimeout(timerExpired, wait);
          // Invoke the leading edge.
          return leading ? invokeFunc(time) : result;
        }
  
        function remainingWait(time) {
          var timeSinceLastCall = time - lastCallTime,
              timeSinceLastInvoke = time - lastInvokeTime,
              timeWaiting = wait - timeSinceLastCall;
  
          return maxing
            ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
            : timeWaiting;
        }
  
        function shouldInvoke(time) {
          var timeSinceLastCall = time - lastCallTime,
              timeSinceLastInvoke = time - lastInvokeTime;
  
          // Either this is the first call, activity has stopped and we're at the
          // trailing edge, the system time has gone backwards and we're treating
          // it as the trailing edge, or we've hit the `maxWait` limit.
          return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
            (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
        }
  
        function timerExpired() {
          var time = now();
          if (shouldInvoke(time)) {
            return trailingEdge(time);
          }
          // Restart the timer.
          timerId = setTimeout(timerExpired, remainingWait(time));
        }
  
        function trailingEdge(time) {
          timerId = undefined;
  
          // Only invoke if we have `lastArgs` which means `func` has been
          // debounced at least once.
          if (trailing && lastArgs) {
            return invokeFunc(time);
          }
          lastArgs = lastThis = undefined;
          return result;
        }
  
        function cancel() {
          if (timerId !== undefined) {
            clearTimeout(timerId);
          }
          lastInvokeTime = 0;
          lastArgs = lastCallTime = lastThis = timerId = undefined;
        }
  
        function flush() {
          return timerId === undefined ? result : trailingEdge(now());
        }
  
        function debounced() {
          var time = now(),
              isInvoking = shouldInvoke(time);
  
          lastArgs = arguments;
          lastThis = this;
          lastCallTime = time;
  
          if (isInvoking) {
            if (timerId === undefined) {
              return leadingEdge(lastCallTime);
            }
            if (maxing) {
              // Handle invocations in a tight loop.
              clearTimeout(timerId);
              timerId = setTimeout(timerExpired, wait);
              return invokeFunc(lastCallTime);
            }
          }
          if (timerId === undefined) {
            timerId = setTimeout(timerExpired, wait);
          }
          return result;
        }
        debounced.cancel = cancel;
        debounced.flush = flush;
        return debounced;
      }
  
      /**
       * Defers invoking the `func` until the current call stack has cleared. Any
       * additional arguments are provided to `func` when it's invoked.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Function
       * @param {Function} func The function to defer.
       * @param {...*} [args] The arguments to invoke `func` with.
       * @returns {number} Returns the timer id.
       * @example
       *
       * _.defer(function(text) {
       *   console.log(text);
       * }, 'deferred');
       * // => Logs 'deferred' after one millisecond.
       */
      var defer = baseRest(function(func, args) {
        return baseDelay(func, 1, args);
      });
  
      /**
       * Invokes `func` after `wait` milliseconds. Any additional arguments are
       * provided to `func` when it's invoked.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Function
       * @param {Function} func The function to delay.
       * @param {number} wait The number of milliseconds to delay invocation.
       * @param {...*} [args] The arguments to invoke `func` with.
       * @returns {number} Returns the timer id.
       * @example
       *
       * _.delay(function(text) {
       *   console.log(text);
       * }, 1000, 'later');
       * // => Logs 'later' after one second.
       */
      var delay = baseRest(function(func, wait, args) {
        return baseDelay(func, toNumber(wait) || 0, args);
      });
  
      /**
       * Creates a function that invokes `func` with arguments reversed.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Function
       * @param {Function} func The function to flip arguments for.
       * @returns {Function} Returns the new flipped function.
       * @example
       *
       * var flipped = _.flip(function() {
       *   return _.toArray(arguments);
       * });
       *
       * flipped('a', 'b', 'c', 'd');
       * // => ['d', 'c', 'b', 'a']
       */
      function flip(func) {
        return createWrap(func, WRAP_FLIP_FLAG);
      }
  
      /**
       * Creates a function that memoizes the result of `func`. If `resolver` is
       * provided, it determines the cache key for storing the result based on the
       * arguments provided to the memoized function. By default, the first argument
       * provided to the memoized function is used as the map cache key. The `func`
       * is invoked with the `this` binding of the memoized function.
       *
       * **Note:** The cache is exposed as the `cache` property on the memoized
       * function. Its creation may be customized by replacing the `_.memoize.Cache`
       * constructor with one whose instances implement the
       * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
       * method interface of `clear`, `delete`, `get`, `has`, and `set`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Function
       * @param {Function} func The function to have its output memoized.
       * @param {Function} [resolver] The function to resolve the cache key.
       * @returns {Function} Returns the new memoized function.
       * @example
       *
       * var object = { 'a': 1, 'b': 2 };
       * var other = { 'c': 3, 'd': 4 };
       *
       * var values = _.memoize(_.values);
       * values(object);
       * // => [1, 2]
       *
       * values(other);
       * // => [3, 4]
       *
       * object.a = 2;
       * values(object);
       * // => [1, 2]
       *
       * // Modify the result cache.
       * values.cache.set(object, ['a', 'b']);
       * values(object);
       * // => ['a', 'b']
       *
       * // Replace `_.memoize.Cache`.
       * _.memoize.Cache = WeakMap;
       */
      function memoize(func, resolver) {
        if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        var memoized = function() {
          var args = arguments,
              key = resolver ? resolver.apply(this, args) : args[0],
              cache = memoized.cache;
  
          if (cache.has(key)) {
            return cache.get(key);
          }
          var result = func.apply(this, args);
          memoized.cache = cache.set(key, result) || cache;
          return result;
        };
        memoized.cache = new (memoize.Cache || MapCache);
        return memoized;
      }
  
      // Expose `MapCache`.
      memoize.Cache = MapCache;
  
      /**
       * Creates a function that negates the result of the predicate `func`. The
       * `func` predicate is invoked with the `this` binding and arguments of the
       * created function.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Function
       * @param {Function} predicate The predicate to negate.
       * @returns {Function} Returns the new negated function.
       * @example
       *
       * function isEven(n) {
       *   return n % 2 == 0;
       * }
       *
       * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
       * // => [1, 3, 5]
       */
      function negate(predicate) {
        if (typeof predicate != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        return function() {
          var args = arguments;
          switch (args.length) {
            case 0: return !predicate.call(this);
            case 1: return !predicate.call(this, args[0]);
            case 2: return !predicate.call(this, args[0], args[1]);
            case 3: return !predicate.call(this, args[0], args[1], args[2]);
          }
          return !predicate.apply(this, args);
        };
      }
  
      /**
       * Creates a function that is restricted to invoking `func` once. Repeat calls
       * to the function return the value of the first invocation. The `func` is
       * invoked with the `this` binding and arguments of the created function.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Function
       * @param {Function} func The function to restrict.
       * @returns {Function} Returns the new restricted function.
       * @example
       *
       * var initialize = _.once(createApplication);
       * initialize();
       * initialize();
       * // => `createApplication` is invoked once
       */
      function once(func) {
        return before(2, func);
      }
  
      /**
       * Creates a function that invokes `func` with its arguments transformed.
       *
       * @static
       * @since 4.0.0
       * @memberOf _
       * @category Function
       * @param {Function} func The function to wrap.
       * @param {...(Function|Function[])} [transforms=[_.identity]]
       *  The argument transforms.
       * @returns {Function} Returns the new function.
       * @example
       *
       * function doubled(n) {
       *   return n * 2;
       * }
       *
       * function square(n) {
       *   return n * n;
       * }
       *
       * var func = _.overArgs(function(x, y) {
       *   return [x, y];
       * }, [square, doubled]);
       *
       * func(9, 3);
       * // => [81, 6]
       *
       * func(10, 5);
       * // => [100, 10]
       */
      var overArgs = castRest(function(func, transforms) {
        transforms = (transforms.length == 1 && isArray(transforms[0]))
          ? arrayMap(transforms[0], baseUnary(getIteratee()))
          : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));
  
        var funcsLength = transforms.length;
        return baseRest(function(args) {
          var index = -1,
              length = nativeMin(args.length, funcsLength);
  
          while (++index < length) {
            args[index] = transforms[index].call(this, args[index]);
          }
          return apply(func, this, args);
        });
      });
  
      /**
       * Creates a function that invokes `func` with `partials` prepended to the
       * arguments it receives. This method is like `_.bind` except it does **not**
       * alter the `this` binding.
       *
       * The `_.partial.placeholder` value, which defaults to `_` in monolithic
       * builds, may be used as a placeholder for partially applied arguments.
       *
       * **Note:** This method doesn't set the "length" property of partially
       * applied functions.
       *
       * @static
       * @memberOf _
       * @since 0.2.0
       * @category Function
       * @param {Function} func The function to partially apply arguments to.
       * @param {...*} [partials] The arguments to be partially applied.
       * @returns {Function} Returns the new partially applied function.
       * @example
       *
       * function greet(greeting, name) {
       *   return greeting + ' ' + name;
       * }
       *
       * var sayHelloTo = _.partial(greet, 'hello');
       * sayHelloTo('fred');
       * // => 'hello fred'
       *
       * // Partially applied with placeholders.
       * var greetFred = _.partial(greet, _, 'fred');
       * greetFred('hi');
       * // => 'hi fred'
       */
      var partial = baseRest(function(func, partials) {
        var holders = replaceHolders(partials, getHolder(partial));
        return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);
      });
  
      /**
       * This method is like `_.partial` except that partially applied arguments
       * are appended to the arguments it receives.
       *
       * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
       * builds, may be used as a placeholder for partially applied arguments.
       *
       * **Note:** This method doesn't set the "length" property of partially
       * applied functions.
       *
       * @static
       * @memberOf _
       * @since 1.0.0
       * @category Function
       * @param {Function} func The function to partially apply arguments to.
       * @param {...*} [partials] The arguments to be partially applied.
       * @returns {Function} Returns the new partially applied function.
       * @example
       *
       * function greet(greeting, name) {
       *   return greeting + ' ' + name;
       * }
       *
       * var greetFred = _.partialRight(greet, 'fred');
       * greetFred('hi');
       * // => 'hi fred'
       *
       * // Partially applied with placeholders.
       * var sayHelloTo = _.partialRight(greet, 'hello', _);
       * sayHelloTo('fred');
       * // => 'hello fred'
       */
      var partialRight = baseRest(function(func, partials) {
        var holders = replaceHolders(partials, getHolder(partialRight));
        return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);
      });
  
      /**
       * Creates a function that invokes `func` with arguments arranged according
       * to the specified `indexes` where the argument value at the first index is
       * provided as the first argument, the argument value at the second index is
       * provided as the second argument, and so on.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Function
       * @param {Function} func The function to rearrange arguments for.
       * @param {...(number|number[])} indexes The arranged argument indexes.
       * @returns {Function} Returns the new function.
       * @example
       *
       * var rearged = _.rearg(function(a, b, c) {
       *   return [a, b, c];
       * }, [2, 0, 1]);
       *
       * rearged('b', 'c', 'a')
       * // => ['a', 'b', 'c']
       */
      var rearg = flatRest(function(func, indexes) {
        return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);
      });
  
      /**
       * Creates a function that invokes `func` with the `this` binding of the
       * created function and arguments from `start` and beyond provided as
       * an array.
       *
       * **Note:** This method is based on the
       * [rest parameter](https://mdn.io/rest_parameters).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Function
       * @param {Function} func The function to apply a rest parameter to.
       * @param {number} [start=func.length-1] The start position of the rest parameter.
       * @returns {Function} Returns the new function.
       * @example
       *
       * var say = _.rest(function(what, names) {
       *   return what + ' ' + _.initial(names).join(', ') +
       *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
       * });
       *
       * say('hello', 'fred', 'barney', 'pebbles');
       * // => 'hello fred, barney, & pebbles'
       */
      function rest(func, start) {
        if (typeof func != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        start = start === undefined ? start : toInteger(start);
        return baseRest(func, start);
      }
  
      /**
       * Creates a function that invokes `func` with the `this` binding of the
       * create function and an array of arguments much like
       * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
       *
       * **Note:** This method is based on the
       * [spread operator](https://mdn.io/spread_operator).
       *
       * @static
       * @memberOf _
       * @since 3.2.0
       * @category Function
       * @param {Function} func The function to spread arguments over.
       * @param {number} [start=0] The start position of the spread.
       * @returns {Function} Returns the new function.
       * @example
       *
       * var say = _.spread(function(who, what) {
       *   return who + ' says ' + what;
       * });
       *
       * say(['fred', 'hello']);
       * // => 'fred says hello'
       *
       * var numbers = Promise.all([
       *   Promise.resolve(40),
       *   Promise.resolve(36)
       * ]);
       *
       * numbers.then(_.spread(function(x, y) {
       *   return x + y;
       * }));
       * // => a Promise of 76
       */
      function spread(func, start) {
        if (typeof func != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        start = start == null ? 0 : nativeMax(toInteger(start), 0);
        return baseRest(function(args) {
          var array = args[start],
              otherArgs = castSlice(args, 0, start);
  
          if (array) {
            arrayPush(otherArgs, array);
          }
          return apply(func, this, otherArgs);
        });
      }
  
      /**
       * Creates a throttled function that only invokes `func` at most once per
       * every `wait` milliseconds. The throttled function comes with a `cancel`
       * method to cancel delayed `func` invocations and a `flush` method to
       * immediately invoke them. Provide `options` to indicate whether `func`
       * should be invoked on the leading and/or trailing edge of the `wait`
       * timeout. The `func` is invoked with the last arguments provided to the
       * throttled function. Subsequent calls to the throttled function return the
       * result of the last `func` invocation.
       *
       * **Note:** If `leading` and `trailing` options are `true`, `func` is
       * invoked on the trailing edge of the timeout only if the throttled function
       * is invoked more than once during the `wait` timeout.
       *
       * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
       * until to the next tick, similar to `setTimeout` with a timeout of `0`.
       *
       * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
       * for details over the differences between `_.throttle` and `_.debounce`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Function
       * @param {Function} func The function to throttle.
       * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
       * @param {Object} [options={}] The options object.
       * @param {boolean} [options.leading=true]
       *  Specify invoking on the leading edge of the timeout.
       * @param {boolean} [options.trailing=true]
       *  Specify invoking on the trailing edge of the timeout.
       * @returns {Function} Returns the new throttled function.
       * @example
       *
       * // Avoid excessively updating the position while scrolling.
       * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
       *
       * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
       * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
       * jQuery(element).on('click', throttled);
       *
       * // Cancel the trailing throttled invocation.
       * jQuery(window).on('popstate', throttled.cancel);
       */
      function throttle(func, wait, options) {
        var leading = true,
            trailing = true;
  
        if (typeof func != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        if (isObject(options)) {
          leading = 'leading' in options ? !!options.leading : leading;
          trailing = 'trailing' in options ? !!options.trailing : trailing;
        }
        return debounce(func, wait, {
          'leading': leading,
          'maxWait': wait,
          'trailing': trailing
        });
      }
  
      /**
       * Creates a function that accepts up to one argument, ignoring any
       * additional arguments.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Function
       * @param {Function} func The function to cap arguments for.
       * @returns {Function} Returns the new capped function.
       * @example
       *
       * _.map(['6', '8', '10'], _.unary(parseInt));
       * // => [6, 8, 10]
       */
      function unary(func) {
        return ary(func, 1);
      }
  
      /**
       * Creates a function that provides `value` to `wrapper` as its first
       * argument. Any additional arguments provided to the function are appended
       * to those provided to the `wrapper`. The wrapper is invoked with the `this`
       * binding of the created function.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Function
       * @param {*} value The value to wrap.
       * @param {Function} [wrapper=identity] The wrapper function.
       * @returns {Function} Returns the new function.
       * @example
       *
       * var p = _.wrap(_.escape, function(func, text) {
       *   return '<p>' + func(text) + '</p>';
       * });
       *
       * p('fred, barney, & pebbles');
       * // => '<p>fred, barney, &amp; pebbles</p>'
       */
      function wrap(value, wrapper) {
        return partial(castFunction(wrapper), value);
      }
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Casts `value` as an array if it's not one.
       *
       * @static
       * @memberOf _
       * @since 4.4.0
       * @category Lang
       * @param {*} value The value to inspect.
       * @returns {Array} Returns the cast array.
       * @example
       *
       * _.castArray(1);
       * // => [1]
       *
       * _.castArray({ 'a': 1 });
       * // => [{ 'a': 1 }]
       *
       * _.castArray('abc');
       * // => ['abc']
       *
       * _.castArray(null);
       * // => [null]
       *
       * _.castArray(undefined);
       * // => [undefined]
       *
       * _.castArray();
       * // => []
       *
       * var array = [1, 2, 3];
       * console.log(_.castArray(array) === array);
       * // => true
       */
      function castArray() {
        if (!arguments.length) {
          return [];
        }
        var value = arguments[0];
        return isArray(value) ? value : [value];
      }
  
      /**
       * Creates a shallow clone of `value`.
       *
       * **Note:** This method is loosely based on the
       * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
       * and supports cloning arrays, array buffers, booleans, date objects, maps,
       * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
       * arrays. The own enumerable properties of `arguments` objects are cloned
       * as plain objects. An empty object is returned for uncloneable values such
       * as error objects, functions, DOM nodes, and WeakMaps.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to clone.
       * @returns {*} Returns the cloned value.
       * @see _.cloneDeep
       * @example
       *
       * var objects = [{ 'a': 1 }, { 'b': 2 }];
       *
       * var shallow = _.clone(objects);
       * console.log(shallow[0] === objects[0]);
       * // => true
       */
      function clone(value) {
        return baseClone(value, CLONE_SYMBOLS_FLAG);
      }
  
      /**
       * This method is like `_.clone` except that it accepts `customizer` which
       * is invoked to produce the cloned value. If `customizer` returns `undefined`,
       * cloning is handled by the method instead. The `customizer` is invoked with
       * up to four arguments; (value [, index|key, object, stack]).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to clone.
       * @param {Function} [customizer] The function to customize cloning.
       * @returns {*} Returns the cloned value.
       * @see _.cloneDeepWith
       * @example
       *
       * function customizer(value) {
       *   if (_.isElement(value)) {
       *     return value.cloneNode(false);
       *   }
       * }
       *
       * var el = _.cloneWith(document.body, customizer);
       *
       * console.log(el === document.body);
       * // => false
       * console.log(el.nodeName);
       * // => 'BODY'
       * console.log(el.childNodes.length);
       * // => 0
       */
      function cloneWith(value, customizer) {
        customizer = typeof customizer == 'function' ? customizer : undefined;
        return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
      }
  
      /**
       * This method is like `_.clone` except that it recursively clones `value`.
       *
       * @static
       * @memberOf _
       * @since 1.0.0
       * @category Lang
       * @param {*} value The value to recursively clone.
       * @returns {*} Returns the deep cloned value.
       * @see _.clone
       * @example
       *
       * var objects = [{ 'a': 1 }, { 'b': 2 }];
       *
       * var deep = _.cloneDeep(objects);
       * console.log(deep[0] === objects[0]);
       * // => false
       */
      function cloneDeep(value) {
        return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
      }
  
      /**
       * This method is like `_.cloneWith` except that it recursively clones `value`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to recursively clone.
       * @param {Function} [customizer] The function to customize cloning.
       * @returns {*} Returns the deep cloned value.
       * @see _.cloneWith
       * @example
       *
       * function customizer(value) {
       *   if (_.isElement(value)) {
       *     return value.cloneNode(true);
       *   }
       * }
       *
       * var el = _.cloneDeepWith(document.body, customizer);
       *
       * console.log(el === document.body);
       * // => false
       * console.log(el.nodeName);
       * // => 'BODY'
       * console.log(el.childNodes.length);
       * // => 20
       */
      function cloneDeepWith(value, customizer) {
        customizer = typeof customizer == 'function' ? customizer : undefined;
        return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
      }
  
      /**
       * Checks if `object` conforms to `source` by invoking the predicate
       * properties of `source` with the corresponding property values of `object`.
       *
       * **Note:** This method is equivalent to `_.conforms` when `source` is
       * partially applied.
       *
       * @static
       * @memberOf _
       * @since 4.14.0
       * @category Lang
       * @param {Object} object The object to inspect.
       * @param {Object} source The object of property predicates to conform to.
       * @returns {boolean} Returns `true` if `object` conforms, else `false`.
       * @example
       *
       * var object = { 'a': 1, 'b': 2 };
       *
       * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
       * // => true
       *
       * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
       * // => false
       */
      function conformsTo(object, source) {
        return source == null || baseConformsTo(object, source, keys(source));
      }
  
      /**
       * Performs a
       * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
       * comparison between two values to determine if they are equivalent.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
       * @example
       *
       * var object = { 'a': 1 };
       * var other = { 'a': 1 };
       *
       * _.eq(object, object);
       * // => true
       *
       * _.eq(object, other);
       * // => false
       *
       * _.eq('a', 'a');
       * // => true
       *
       * _.eq('a', Object('a'));
       * // => false
       *
       * _.eq(NaN, NaN);
       * // => true
       */
      function eq(value, other) {
        return value === other || (value !== value && other !== other);
      }
  
      /**
       * Checks if `value` is greater than `other`.
       *
       * @static
       * @memberOf _
       * @since 3.9.0
       * @category Lang
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @returns {boolean} Returns `true` if `value` is greater than `other`,
       *  else `false`.
       * @see _.lt
       * @example
       *
       * _.gt(3, 1);
       * // => true
       *
       * _.gt(3, 3);
       * // => false
       *
       * _.gt(1, 3);
       * // => false
       */
      var gt = createRelationalOperation(baseGt);
  
      /**
       * Checks if `value` is greater than or equal to `other`.
       *
       * @static
       * @memberOf _
       * @since 3.9.0
       * @category Lang
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @returns {boolean} Returns `true` if `value` is greater than or equal to
       *  `other`, else `false`.
       * @see _.lte
       * @example
       *
       * _.gte(3, 1);
       * // => true
       *
       * _.gte(3, 3);
       * // => true
       *
       * _.gte(1, 3);
       * // => false
       */
      var gte = createRelationalOperation(function(value, other) {
        return value >= other;
      });
  
      /**
       * Checks if `value` is likely an `arguments` object.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is an `arguments` object,
       *  else `false`.
       * @example
       *
       * _.isArguments(function() { return arguments; }());
       * // => true
       *
       * _.isArguments([1, 2, 3]);
       * // => false
       */
      var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
        return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
          !propertyIsEnumerable.call(value, 'callee');
      };
  
      /**
       * Checks if `value` is classified as an `Array` object.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is an array, else `false`.
       * @example
       *
       * _.isArray([1, 2, 3]);
       * // => true
       *
       * _.isArray(document.body.children);
       * // => false
       *
       * _.isArray('abc');
       * // => false
       *
       * _.isArray(_.noop);
       * // => false
       */
      var isArray = Array.isArray;
  
      /**
       * Checks if `value` is classified as an `ArrayBuffer` object.
       *
       * @static
       * @memberOf _
       * @since 4.3.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
       * @example
       *
       * _.isArrayBuffer(new ArrayBuffer(2));
       * // => true
       *
       * _.isArrayBuffer(new Array(2));
       * // => false
       */
      var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;
  
      /**
       * Checks if `value` is array-like. A value is considered array-like if it's
       * not a function and has a `value.length` that's an integer greater than or
       * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
       * @example
       *
       * _.isArrayLike([1, 2, 3]);
       * // => true
       *
       * _.isArrayLike(document.body.children);
       * // => true
       *
       * _.isArrayLike('abc');
       * // => true
       *
       * _.isArrayLike(_.noop);
       * // => false
       */
      function isArrayLike(value) {
        return value != null && isLength(value.length) && !isFunction(value);
      }
  
      /**
       * This method is like `_.isArrayLike` except that it also checks if `value`
       * is an object.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is an array-like object,
       *  else `false`.
       * @example
       *
       * _.isArrayLikeObject([1, 2, 3]);
       * // => true
       *
       * _.isArrayLikeObject(document.body.children);
       * // => true
       *
       * _.isArrayLikeObject('abc');
       * // => false
       *
       * _.isArrayLikeObject(_.noop);
       * // => false
       */
      function isArrayLikeObject(value) {
        return isObjectLike(value) && isArrayLike(value);
      }
  
      /**
       * Checks if `value` is classified as a boolean primitive or object.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
       * @example
       *
       * _.isBoolean(false);
       * // => true
       *
       * _.isBoolean(null);
       * // => false
       */
      function isBoolean(value) {
        return value === true || value === false ||
          (isObjectLike(value) && baseGetTag(value) == boolTag);
      }
  
      /**
       * Checks if `value` is a buffer.
       *
       * @static
       * @memberOf _
       * @since 4.3.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
       * @example
       *
       * _.isBuffer(new Buffer(2));
       * // => true
       *
       * _.isBuffer(new Uint8Array(2));
       * // => false
       */
      var isBuffer = nativeIsBuffer || stubFalse;
  
      /**
       * Checks if `value` is classified as a `Date` object.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
       * @example
       *
       * _.isDate(new Date);
       * // => true
       *
       * _.isDate('Mon April 23 2012');
       * // => false
       */
      var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;
  
      /**
       * Checks if `value` is likely a DOM element.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
       * @example
       *
       * _.isElement(document.body);
       * // => true
       *
       * _.isElement('<body>');
       * // => false
       */
      function isElement(value) {
        return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
      }
  
      /**
       * Checks if `value` is an empty object, collection, map, or set.
       *
       * Objects are considered empty if they have no own enumerable string keyed
       * properties.
       *
       * Array-like values such as `arguments` objects, arrays, buffers, strings, or
       * jQuery-like collections are considered empty if they have a `length` of `0`.
       * Similarly, maps and sets are considered empty if they have a `size` of `0`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is empty, else `false`.
       * @example
       *
       * _.isEmpty(null);
       * // => true
       *
       * _.isEmpty(true);
       * // => true
       *
       * _.isEmpty(1);
       * // => true
       *
       * _.isEmpty([1, 2, 3]);
       * // => false
       *
       * _.isEmpty({ 'a': 1 });
       * // => false
       */
      function isEmpty(value) {
        if (value == null) {
          return true;
        }
        if (isArrayLike(value) &&
            (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||
              isBuffer(value) || isTypedArray(value) || isArguments(value))) {
          return !value.length;
        }
        var tag = getTag(value);
        if (tag == mapTag || tag == setTag) {
          return !value.size;
        }
        if (isPrototype(value)) {
          return !baseKeys(value).length;
        }
        for (var key in value) {
          if (hasOwnProperty.call(value, key)) {
            return false;
          }
        }
        return true;
      }
  
      /**
       * Performs a deep comparison between two values to determine if they are
       * equivalent.
       *
       * **Note:** This method supports comparing arrays, array buffers, booleans,
       * date objects, error objects, maps, numbers, `Object` objects, regexes,
       * sets, strings, symbols, and typed arrays. `Object` objects are compared
       * by their own, not inherited, enumerable properties. Functions and DOM
       * nodes are compared by strict equality, i.e. `===`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
       * @example
       *
       * var object = { 'a': 1 };
       * var other = { 'a': 1 };
       *
       * _.isEqual(object, other);
       * // => true
       *
       * object === other;
       * // => false
       */
      function isEqual(value, other) {
        return baseIsEqual(value, other);
      }
  
      /**
       * This method is like `_.isEqual` except that it accepts `customizer` which
       * is invoked to compare values. If `customizer` returns `undefined`, comparisons
       * are handled by the method instead. The `customizer` is invoked with up to
       * six arguments: (objValue, othValue [, index|key, object, other, stack]).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @param {Function} [customizer] The function to customize comparisons.
       * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
       * @example
       *
       * function isGreeting(value) {
       *   return /^h(?:i|ello)$/.test(value);
       * }
       *
       * function customizer(objValue, othValue) {
       *   if (isGreeting(objValue) && isGreeting(othValue)) {
       *     return true;
       *   }
       * }
       *
       * var array = ['hello', 'goodbye'];
       * var other = ['hi', 'goodbye'];
       *
       * _.isEqualWith(array, other, customizer);
       * // => true
       */
      function isEqualWith(value, other, customizer) {
        customizer = typeof customizer == 'function' ? customizer : undefined;
        var result = customizer ? customizer(value, other) : undefined;
        return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;
      }
  
      /**
       * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
       * `SyntaxError`, `TypeError`, or `URIError` object.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
       * @example
       *
       * _.isError(new Error);
       * // => true
       *
       * _.isError(Error);
       * // => false
       */
      function isError(value) {
        if (!isObjectLike(value)) {
          return false;
        }
        var tag = baseGetTag(value);
        return tag == errorTag || tag == domExcTag ||
          (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
      }
  
      /**
       * Checks if `value` is a finite primitive number.
       *
       * **Note:** This method is based on
       * [`Number.isFinite`](https://mdn.io/Number/isFinite).
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
       * @example
       *
       * _.isFinite(3);
       * // => true
       *
       * _.isFinite(Number.MIN_VALUE);
       * // => true
       *
       * _.isFinite(Infinity);
       * // => false
       *
       * _.isFinite('3');
       * // => false
       */
      function isFinite(value) {
        return typeof value == 'number' && nativeIsFinite(value);
      }
  
      /**
       * Checks if `value` is classified as a `Function` object.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a function, else `false`.
       * @example
       *
       * _.isFunction(_);
       * // => true
       *
       * _.isFunction(/abc/);
       * // => false
       */
      function isFunction(value) {
        if (!isObject(value)) {
          return false;
        }
        // The use of `Object#toString` avoids issues with the `typeof` operator
        // in Safari 9 which returns 'object' for typed arrays and other constructors.
        var tag = baseGetTag(value);
        return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
      }
  
      /**
       * Checks if `value` is an integer.
       *
       * **Note:** This method is based on
       * [`Number.isInteger`](https://mdn.io/Number/isInteger).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is an integer, else `false`.
       * @example
       *
       * _.isInteger(3);
       * // => true
       *
       * _.isInteger(Number.MIN_VALUE);
       * // => false
       *
       * _.isInteger(Infinity);
       * // => false
       *
       * _.isInteger('3');
       * // => false
       */
      function isInteger(value) {
        return typeof value == 'number' && value == toInteger(value);
      }
  
      /**
       * Checks if `value` is a valid array-like length.
       *
       * **Note:** This method is loosely based on
       * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
       * @example
       *
       * _.isLength(3);
       * // => true
       *
       * _.isLength(Number.MIN_VALUE);
       * // => false
       *
       * _.isLength(Infinity);
       * // => false
       *
       * _.isLength('3');
       * // => false
       */
      function isLength(value) {
        return typeof value == 'number' &&
          value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
      }
  
      /**
       * Checks if `value` is the
       * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
       * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is an object, else `false`.
       * @example
       *
       * _.isObject({});
       * // => true
       *
       * _.isObject([1, 2, 3]);
       * // => true
       *
       * _.isObject(_.noop);
       * // => true
       *
       * _.isObject(null);
       * // => false
       */
      function isObject(value) {
        var type = typeof value;
        return value != null && (type == 'object' || type == 'function');
      }
  
      /**
       * Checks if `value` is object-like. A value is object-like if it's not `null`
       * and has a `typeof` result of "object".
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
       * @example
       *
       * _.isObjectLike({});
       * // => true
       *
       * _.isObjectLike([1, 2, 3]);
       * // => true
       *
       * _.isObjectLike(_.noop);
       * // => false
       *
       * _.isObjectLike(null);
       * // => false
       */
      function isObjectLike(value) {
        return value != null && typeof value == 'object';
      }
  
      /**
       * Checks if `value` is classified as a `Map` object.
       *
       * @static
       * @memberOf _
       * @since 4.3.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a map, else `false`.
       * @example
       *
       * _.isMap(new Map);
       * // => true
       *
       * _.isMap(new WeakMap);
       * // => false
       */
      var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;
  
      /**
       * Performs a partial deep comparison between `object` and `source` to
       * determine if `object` contains equivalent property values.
       *
       * **Note:** This method is equivalent to `_.matches` when `source` is
       * partially applied.
       *
       * Partial comparisons will match empty array and empty object `source`
       * values against any array or object value, respectively. See `_.isEqual`
       * for a list of supported value comparisons.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Lang
       * @param {Object} object The object to inspect.
       * @param {Object} source The object of property values to match.
       * @returns {boolean} Returns `true` if `object` is a match, else `false`.
       * @example
       *
       * var object = { 'a': 1, 'b': 2 };
       *
       * _.isMatch(object, { 'b': 2 });
       * // => true
       *
       * _.isMatch(object, { 'b': 1 });
       * // => false
       */
      function isMatch(object, source) {
        return object === source || baseIsMatch(object, source, getMatchData(source));
      }
  
      /**
       * This method is like `_.isMatch` except that it accepts `customizer` which
       * is invoked to compare values. If `customizer` returns `undefined`, comparisons
       * are handled by the method instead. The `customizer` is invoked with five
       * arguments: (objValue, srcValue, index|key, object, source).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {Object} object The object to inspect.
       * @param {Object} source The object of property values to match.
       * @param {Function} [customizer] The function to customize comparisons.
       * @returns {boolean} Returns `true` if `object` is a match, else `false`.
       * @example
       *
       * function isGreeting(value) {
       *   return /^h(?:i|ello)$/.test(value);
       * }
       *
       * function customizer(objValue, srcValue) {
       *   if (isGreeting(objValue) && isGreeting(srcValue)) {
       *     return true;
       *   }
       * }
       *
       * var object = { 'greeting': 'hello' };
       * var source = { 'greeting': 'hi' };
       *
       * _.isMatchWith(object, source, customizer);
       * // => true
       */
      function isMatchWith(object, source, customizer) {
        customizer = typeof customizer == 'function' ? customizer : undefined;
        return baseIsMatch(object, source, getMatchData(source), customizer);
      }
  
      /**
       * Checks if `value` is `NaN`.
       *
       * **Note:** This method is based on
       * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
       * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
       * `undefined` and other non-number values.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
       * @example
       *
       * _.isNaN(NaN);
       * // => true
       *
       * _.isNaN(new Number(NaN));
       * // => true
       *
       * isNaN(undefined);
       * // => true
       *
       * _.isNaN(undefined);
       * // => false
       */
      function isNaN(value) {
        // An `NaN` primitive is the only value that is not equal to itself.
        // Perform the `toStringTag` check first to avoid errors with some
        // ActiveX objects in IE.
        return isNumber(value) && value != +value;
      }
  
      /**
       * Checks if `value` is a pristine native function.
       *
       * **Note:** This method can't reliably detect native functions in the presence
       * of the core-js package because core-js circumvents this kind of detection.
       * Despite multiple requests, the core-js maintainer has made it clear: any
       * attempt to fix the detection will be obstructed. As a result, we're left
       * with little choice but to throw an error. Unfortunately, this also affects
       * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
       * which rely on core-js.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a native function,
       *  else `false`.
       * @example
       *
       * _.isNative(Array.prototype.push);
       * // => true
       *
       * _.isNative(_);
       * // => false
       */
      function isNative(value) {
        if (isMaskable(value)) {
          throw new Error(CORE_ERROR_TEXT);
        }
        return baseIsNative(value);
      }
  
      /**
       * Checks if `value` is `null`.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
       * @example
       *
       * _.isNull(null);
       * // => true
       *
       * _.isNull(void 0);
       * // => false
       */
      function isNull(value) {
        return value === null;
      }
  
      /**
       * Checks if `value` is `null` or `undefined`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
       * @example
       *
       * _.isNil(null);
       * // => true
       *
       * _.isNil(void 0);
       * // => true
       *
       * _.isNil(NaN);
       * // => false
       */
      function isNil(value) {
        return value == null;
      }
  
      /**
       * Checks if `value` is classified as a `Number` primitive or object.
       *
       * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
       * classified as numbers, use the `_.isFinite` method.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a number, else `false`.
       * @example
       *
       * _.isNumber(3);
       * // => true
       *
       * _.isNumber(Number.MIN_VALUE);
       * // => true
       *
       * _.isNumber(Infinity);
       * // => true
       *
       * _.isNumber('3');
       * // => false
       */
      function isNumber(value) {
        return typeof value == 'number' ||
          (isObjectLike(value) && baseGetTag(value) == numberTag);
      }
  
      /**
       * Checks if `value` is a plain object, that is, an object created by the
       * `Object` constructor or one with a `[[Prototype]]` of `null`.
       *
       * @static
       * @memberOf _
       * @since 0.8.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       * }
       *
       * _.isPlainObject(new Foo);
       * // => false
       *
       * _.isPlainObject([1, 2, 3]);
       * // => false
       *
       * _.isPlainObject({ 'x': 0, 'y': 0 });
       * // => true
       *
       * _.isPlainObject(Object.create(null));
       * // => true
       */
      function isPlainObject(value) {
        if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
          return false;
        }
        var proto = getPrototype(value);
        if (proto === null) {
          return true;
        }
        var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
        return typeof Ctor == 'function' && Ctor instanceof Ctor &&
          funcToString.call(Ctor) == objectCtorString;
      }
  
      /**
       * Checks if `value` is classified as a `RegExp` object.
       *
       * @static
       * @memberOf _
       * @since 0.1.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
       * @example
       *
       * _.isRegExp(/abc/);
       * // => true
       *
       * _.isRegExp('/abc/');
       * // => false
       */
      var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;
  
      /**
       * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
       * double precision number which isn't the result of a rounded unsafe integer.
       *
       * **Note:** This method is based on
       * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
       * @example
       *
       * _.isSafeInteger(3);
       * // => true
       *
       * _.isSafeInteger(Number.MIN_VALUE);
       * // => false
       *
       * _.isSafeInteger(Infinity);
       * // => false
       *
       * _.isSafeInteger('3');
       * // => false
       */
      function isSafeInteger(value) {
        return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
      }
  
      /**
       * Checks if `value` is classified as a `Set` object.
       *
       * @static
       * @memberOf _
       * @since 4.3.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a set, else `false`.
       * @example
       *
       * _.isSet(new Set);
       * // => true
       *
       * _.isSet(new WeakSet);
       * // => false
       */
      var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;
  
      /**
       * Checks if `value` is classified as a `String` primitive or object.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a string, else `false`.
       * @example
       *
       * _.isString('abc');
       * // => true
       *
       * _.isString(1);
       * // => false
       */
      function isString(value) {
        return typeof value == 'string' ||
          (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);
      }
  
      /**
       * Checks if `value` is classified as a `Symbol` primitive or object.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
       * @example
       *
       * _.isSymbol(Symbol.iterator);
       * // => true
       *
       * _.isSymbol('abc');
       * // => false
       */
      function isSymbol(value) {
        return typeof value == 'symbol' ||
          (isObjectLike(value) && baseGetTag(value) == symbolTag);
      }
  
      /**
       * Checks if `value` is classified as a typed array.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
       * @example
       *
       * _.isTypedArray(new Uint8Array);
       * // => true
       *
       * _.isTypedArray([]);
       * // => false
       */
      var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;
  
      /**
       * Checks if `value` is `undefined`.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
       * @example
       *
       * _.isUndefined(void 0);
       * // => true
       *
       * _.isUndefined(null);
       * // => false
       */
      function isUndefined(value) {
        return value === undefined;
      }
  
      /**
       * Checks if `value` is classified as a `WeakMap` object.
       *
       * @static
       * @memberOf _
       * @since 4.3.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
       * @example
       *
       * _.isWeakMap(new WeakMap);
       * // => true
       *
       * _.isWeakMap(new Map);
       * // => false
       */
      function isWeakMap(value) {
        return isObjectLike(value) && getTag(value) == weakMapTag;
      }
  
      /**
       * Checks if `value` is classified as a `WeakSet` object.
       *
       * @static
       * @memberOf _
       * @since 4.3.0
       * @category Lang
       * @param {*} value The value to check.
       * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
       * @example
       *
       * _.isWeakSet(new WeakSet);
       * // => true
       *
       * _.isWeakSet(new Set);
       * // => false
       */
      function isWeakSet(value) {
        return isObjectLike(value) && baseGetTag(value) == weakSetTag;
      }
  
      /**
       * Checks if `value` is less than `other`.
       *
       * @static
       * @memberOf _
       * @since 3.9.0
       * @category Lang
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @returns {boolean} Returns `true` if `value` is less than `other`,
       *  else `false`.
       * @see _.gt
       * @example
       *
       * _.lt(1, 3);
       * // => true
       *
       * _.lt(3, 3);
       * // => false
       *
       * _.lt(3, 1);
       * // => false
       */
      var lt = createRelationalOperation(baseLt);
  
      /**
       * Checks if `value` is less than or equal to `other`.
       *
       * @static
       * @memberOf _
       * @since 3.9.0
       * @category Lang
       * @param {*} value The value to compare.
       * @param {*} other The other value to compare.
       * @returns {boolean} Returns `true` if `value` is less than or equal to
       *  `other`, else `false`.
       * @see _.gte
       * @example
       *
       * _.lte(1, 3);
       * // => true
       *
       * _.lte(3, 3);
       * // => true
       *
       * _.lte(3, 1);
       * // => false
       */
      var lte = createRelationalOperation(function(value, other) {
        return value <= other;
      });
  
      /**
       * Converts `value` to an array.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Lang
       * @param {*} value The value to convert.
       * @returns {Array} Returns the converted array.
       * @example
       *
       * _.toArray({ 'a': 1, 'b': 2 });
       * // => [1, 2]
       *
       * _.toArray('abc');
       * // => ['a', 'b', 'c']
       *
       * _.toArray(1);
       * // => []
       *
       * _.toArray(null);
       * // => []
       */
      function toArray(value) {
        if (!value) {
          return [];
        }
        if (isArrayLike(value)) {
          return isString(value) ? stringToArray(value) : copyArray(value);
        }
        if (symIterator && value[symIterator]) {
          return iteratorToArray(value[symIterator]());
        }
        var tag = getTag(value),
            func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);
  
        return func(value);
      }
  
      /**
       * Converts `value` to a finite number.
       *
       * @static
       * @memberOf _
       * @since 4.12.0
       * @category Lang
       * @param {*} value The value to convert.
       * @returns {number} Returns the converted number.
       * @example
       *
       * _.toFinite(3.2);
       * // => 3.2
       *
       * _.toFinite(Number.MIN_VALUE);
       * // => 5e-324
       *
       * _.toFinite(Infinity);
       * // => 1.7976931348623157e+308
       *
       * _.toFinite('3.2');
       * // => 3.2
       */
      function toFinite(value) {
        if (!value) {
          return value === 0 ? value : 0;
        }
        value = toNumber(value);
        if (value === INFINITY || value === -INFINITY) {
          var sign = (value < 0 ? -1 : 1);
          return sign * MAX_INTEGER;
        }
        return value === value ? value : 0;
      }
  
      /**
       * Converts `value` to an integer.
       *
       * **Note:** This method is loosely based on
       * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to convert.
       * @returns {number} Returns the converted integer.
       * @example
       *
       * _.toInteger(3.2);
       * // => 3
       *
       * _.toInteger(Number.MIN_VALUE);
       * // => 0
       *
       * _.toInteger(Infinity);
       * // => 1.7976931348623157e+308
       *
       * _.toInteger('3.2');
       * // => 3
       */
      function toInteger(value) {
        var result = toFinite(value),
            remainder = result % 1;
  
        return result === result ? (remainder ? result - remainder : result) : 0;
      }
  
      /**
       * Converts `value` to an integer suitable for use as the length of an
       * array-like object.
       *
       * **Note:** This method is based on
       * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to convert.
       * @returns {number} Returns the converted integer.
       * @example
       *
       * _.toLength(3.2);
       * // => 3
       *
       * _.toLength(Number.MIN_VALUE);
       * // => 0
       *
       * _.toLength(Infinity);
       * // => 4294967295
       *
       * _.toLength('3.2');
       * // => 3
       */
      function toLength(value) {
        return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
      }
  
      /**
       * Converts `value` to a number.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to process.
       * @returns {number} Returns the number.
       * @example
       *
       * _.toNumber(3.2);
       * // => 3.2
       *
       * _.toNumber(Number.MIN_VALUE);
       * // => 5e-324
       *
       * _.toNumber(Infinity);
       * // => Infinity
       *
       * _.toNumber('3.2');
       * // => 3.2
       */
      function toNumber(value) {
        if (typeof value == 'number') {
          return value;
        }
        if (isSymbol(value)) {
          return NAN;
        }
        if (isObject(value)) {
          var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
          value = isObject(other) ? (other + '') : other;
        }
        if (typeof value != 'string') {
          return value === 0 ? value : +value;
        }
        value = value.replace(reTrim, '');
        var isBinary = reIsBinary.test(value);
        return (isBinary || reIsOctal.test(value))
          ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
          : (reIsBadHex.test(value) ? NAN : +value);
      }
  
      /**
       * Converts `value` to a plain object flattening inherited enumerable string
       * keyed properties of `value` to own properties of the plain object.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Lang
       * @param {*} value The value to convert.
       * @returns {Object} Returns the converted plain object.
       * @example
       *
       * function Foo() {
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.assign({ 'a': 1 }, new Foo);
       * // => { 'a': 1, 'b': 2 }
       *
       * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
       * // => { 'a': 1, 'b': 2, 'c': 3 }
       */
      function toPlainObject(value) {
        return copyObject(value, keysIn(value));
      }
  
      /**
       * Converts `value` to a safe integer. A safe integer can be compared and
       * represented correctly.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to convert.
       * @returns {number} Returns the converted integer.
       * @example
       *
       * _.toSafeInteger(3.2);
       * // => 3
       *
       * _.toSafeInteger(Number.MIN_VALUE);
       * // => 0
       *
       * _.toSafeInteger(Infinity);
       * // => 9007199254740991
       *
       * _.toSafeInteger('3.2');
       * // => 3
       */
      function toSafeInteger(value) {
        return value
          ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
          : (value === 0 ? value : 0);
      }
  
      /**
       * Converts `value` to a string. An empty string is returned for `null`
       * and `undefined` values. The sign of `-0` is preserved.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Lang
       * @param {*} value The value to convert.
       * @returns {string} Returns the converted string.
       * @example
       *
       * _.toString(null);
       * // => ''
       *
       * _.toString(-0);
       * // => '-0'
       *
       * _.toString([1, 2, 3]);
       * // => '1,2,3'
       */
      function toString(value) {
        return value == null ? '' : baseToString(value);
      }
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Assigns own enumerable string keyed properties of source objects to the
       * destination object. Source objects are applied from left to right.
       * Subsequent sources overwrite property assignments of previous sources.
       *
       * **Note:** This method mutates `object` and is loosely based on
       * [`Object.assign`](https://mdn.io/Object/assign).
       *
       * @static
       * @memberOf _
       * @since 0.10.0
       * @category Object
       * @param {Object} object The destination object.
       * @param {...Object} [sources] The source objects.
       * @returns {Object} Returns `object`.
       * @see _.assignIn
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       * }
       *
       * function Bar() {
       *   this.c = 3;
       * }
       *
       * Foo.prototype.b = 2;
       * Bar.prototype.d = 4;
       *
       * _.assign({ 'a': 0 }, new Foo, new Bar);
       * // => { 'a': 1, 'c': 3 }
       */
      var assign = createAssigner(function(object, source) {
        if (isPrototype(source) || isArrayLike(source)) {
          copyObject(source, keys(source), object);
          return;
        }
        for (var key in source) {
          if (hasOwnProperty.call(source, key)) {
            assignValue(object, key, source[key]);
          }
        }
      });
  
      /**
       * This method is like `_.assign` except that it iterates over own and
       * inherited source properties.
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @alias extend
       * @category Object
       * @param {Object} object The destination object.
       * @param {...Object} [sources] The source objects.
       * @returns {Object} Returns `object`.
       * @see _.assign
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       * }
       *
       * function Bar() {
       *   this.c = 3;
       * }
       *
       * Foo.prototype.b = 2;
       * Bar.prototype.d = 4;
       *
       * _.assignIn({ 'a': 0 }, new Foo, new Bar);
       * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
       */
      var assignIn = createAssigner(function(object, source) {
        copyObject(source, keysIn(source), object);
      });
  
      /**
       * This method is like `_.assignIn` except that it accepts `customizer`
       * which is invoked to produce the assigned values. If `customizer` returns
       * `undefined`, assignment is handled by the method instead. The `customizer`
       * is invoked with five arguments: (objValue, srcValue, key, object, source).
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @alias extendWith
       * @category Object
       * @param {Object} object The destination object.
       * @param {...Object} sources The source objects.
       * @param {Function} [customizer] The function to customize assigned values.
       * @returns {Object} Returns `object`.
       * @see _.assignWith
       * @example
       *
       * function customizer(objValue, srcValue) {
       *   return _.isUndefined(objValue) ? srcValue : objValue;
       * }
       *
       * var defaults = _.partialRight(_.assignInWith, customizer);
       *
       * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
       * // => { 'a': 1, 'b': 2 }
       */
      var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {
        copyObject(source, keysIn(source), object, customizer);
      });
  
      /**
       * This method is like `_.assign` except that it accepts `customizer`
       * which is invoked to produce the assigned values. If `customizer` returns
       * `undefined`, assignment is handled by the method instead. The `customizer`
       * is invoked with five arguments: (objValue, srcValue, key, object, source).
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Object
       * @param {Object} object The destination object.
       * @param {...Object} sources The source objects.
       * @param {Function} [customizer] The function to customize assigned values.
       * @returns {Object} Returns `object`.
       * @see _.assignInWith
       * @example
       *
       * function customizer(objValue, srcValue) {
       *   return _.isUndefined(objValue) ? srcValue : objValue;
       * }
       *
       * var defaults = _.partialRight(_.assignWith, customizer);
       *
       * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
       * // => { 'a': 1, 'b': 2 }
       */
      var assignWith = createAssigner(function(object, source, srcIndex, customizer) {
        copyObject(source, keys(source), object, customizer);
      });
  
      /**
       * Creates an array of values corresponding to `paths` of `object`.
       *
       * @static
       * @memberOf _
       * @since 1.0.0
       * @category Object
       * @param {Object} object The object to iterate over.
       * @param {...(string|string[])} [paths] The property paths to pick.
       * @returns {Array} Returns the picked values.
       * @example
       *
       * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
       *
       * _.at(object, ['a[0].b.c', 'a[1]']);
       * // => [3, 4]
       */
      var at = flatRest(baseAt);
  
      /**
       * Creates an object that inherits from the `prototype` object. If a
       * `properties` object is given, its own enumerable string keyed properties
       * are assigned to the created object.
       *
       * @static
       * @memberOf _
       * @since 2.3.0
       * @category Object
       * @param {Object} prototype The object to inherit from.
       * @param {Object} [properties] The properties to assign to the object.
       * @returns {Object} Returns the new object.
       * @example
       *
       * function Shape() {
       *   this.x = 0;
       *   this.y = 0;
       * }
       *
       * function Circle() {
       *   Shape.call(this);
       * }
       *
       * Circle.prototype = _.create(Shape.prototype, {
       *   'constructor': Circle
       * });
       *
       * var circle = new Circle;
       * circle instanceof Circle;
       * // => true
       *
       * circle instanceof Shape;
       * // => true
       */
      function create(prototype, properties) {
        var result = baseCreate(prototype);
        return properties == null ? result : baseAssign(result, properties);
      }
  
      /**
       * Assigns own and inherited enumerable string keyed properties of source
       * objects to the destination object for all destination properties that
       * resolve to `undefined`. Source objects are applied from left to right.
       * Once a property is set, additional values of the same property are ignored.
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Object
       * @param {Object} object The destination object.
       * @param {...Object} [sources] The source objects.
       * @returns {Object} Returns `object`.
       * @see _.defaultsDeep
       * @example
       *
       * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
       * // => { 'a': 1, 'b': 2 }
       */
      var defaults = baseRest(function(object, sources) {
        object = Object(object);
  
        var index = -1;
        var length = sources.length;
        var guard = length > 2 ? sources[2] : undefined;
  
        if (guard && isIterateeCall(sources[0], sources[1], guard)) {
          length = 1;
        }
  
        while (++index < length) {
          var source = sources[index];
          var props = keysIn(source);
          var propsIndex = -1;
          var propsLength = props.length;
  
          while (++propsIndex < propsLength) {
            var key = props[propsIndex];
            var value = object[key];
  
            if (value === undefined ||
                (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
              object[key] = source[key];
            }
          }
        }
  
        return object;
      });
  
      /**
       * This method is like `_.defaults` except that it recursively assigns
       * default properties.
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 3.10.0
       * @category Object
       * @param {Object} object The destination object.
       * @param {...Object} [sources] The source objects.
       * @returns {Object} Returns `object`.
       * @see _.defaults
       * @example
       *
       * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
       * // => { 'a': { 'b': 2, 'c': 3 } }
       */
      var defaultsDeep = baseRest(function(args) {
        args.push(undefined, customDefaultsMerge);
        return apply(mergeWith, undefined, args);
      });
  
      /**
       * This method is like `_.find` except that it returns the key of the first
       * element `predicate` returns truthy for instead of the element itself.
       *
       * @static
       * @memberOf _
       * @since 1.1.0
       * @category Object
       * @param {Object} object The object to inspect.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @returns {string|undefined} Returns the key of the matched element,
       *  else `undefined`.
       * @example
       *
       * var users = {
       *   'barney':  { 'age': 36, 'active': true },
       *   'fred':    { 'age': 40, 'active': false },
       *   'pebbles': { 'age': 1,  'active': true }
       * };
       *
       * _.findKey(users, function(o) { return o.age < 40; });
       * // => 'barney' (iteration order is not guaranteed)
       *
       * // The `_.matches` iteratee shorthand.
       * _.findKey(users, { 'age': 1, 'active': true });
       * // => 'pebbles'
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.findKey(users, ['active', false]);
       * // => 'fred'
       *
       * // The `_.property` iteratee shorthand.
       * _.findKey(users, 'active');
       * // => 'barney'
       */
      function findKey(object, predicate) {
        return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);
      }
  
      /**
       * This method is like `_.findKey` except that it iterates over elements of
       * a collection in the opposite order.
       *
       * @static
       * @memberOf _
       * @since 2.0.0
       * @category Object
       * @param {Object} object The object to inspect.
       * @param {Function} [predicate=_.identity] The function invoked per iteration.
       * @returns {string|undefined} Returns the key of the matched element,
       *  else `undefined`.
       * @example
       *
       * var users = {
       *   'barney':  { 'age': 36, 'active': true },
       *   'fred':    { 'age': 40, 'active': false },
       *   'pebbles': { 'age': 1,  'active': true }
       * };
       *
       * _.findLastKey(users, function(o) { return o.age < 40; });
       * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
       *
       * // The `_.matches` iteratee shorthand.
       * _.findLastKey(users, { 'age': 36, 'active': true });
       * // => 'barney'
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.findLastKey(users, ['active', false]);
       * // => 'fred'
       *
       * // The `_.property` iteratee shorthand.
       * _.findLastKey(users, 'active');
       * // => 'pebbles'
       */
      function findLastKey(object, predicate) {
        return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);
      }
  
      /**
       * Iterates over own and inherited enumerable string keyed properties of an
       * object and invokes `iteratee` for each property. The iteratee is invoked
       * with three arguments: (value, key, object). Iteratee functions may exit
       * iteration early by explicitly returning `false`.
       *
       * @static
       * @memberOf _
       * @since 0.3.0
       * @category Object
       * @param {Object} object The object to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Object} Returns `object`.
       * @see _.forInRight
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.forIn(new Foo, function(value, key) {
       *   console.log(key);
       * });
       * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
       */
      function forIn(object, iteratee) {
        return object == null
          ? object
          : baseFor(object, getIteratee(iteratee, 3), keysIn);
      }
  
      /**
       * This method is like `_.forIn` except that it iterates over properties of
       * `object` in the opposite order.
       *
       * @static
       * @memberOf _
       * @since 2.0.0
       * @category Object
       * @param {Object} object The object to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Object} Returns `object`.
       * @see _.forIn
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.forInRight(new Foo, function(value, key) {
       *   console.log(key);
       * });
       * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
       */
      function forInRight(object, iteratee) {
        return object == null
          ? object
          : baseForRight(object, getIteratee(iteratee, 3), keysIn);
      }
  
      /**
       * Iterates over own enumerable string keyed properties of an object and
       * invokes `iteratee` for each property. The iteratee is invoked with three
       * arguments: (value, key, object). Iteratee functions may exit iteration
       * early by explicitly returning `false`.
       *
       * @static
       * @memberOf _
       * @since 0.3.0
       * @category Object
       * @param {Object} object The object to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Object} Returns `object`.
       * @see _.forOwnRight
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.forOwn(new Foo, function(value, key) {
       *   console.log(key);
       * });
       * // => Logs 'a' then 'b' (iteration order is not guaranteed).
       */
      function forOwn(object, iteratee) {
        return object && baseForOwn(object, getIteratee(iteratee, 3));
      }
  
      /**
       * This method is like `_.forOwn` except that it iterates over properties of
       * `object` in the opposite order.
       *
       * @static
       * @memberOf _
       * @since 2.0.0
       * @category Object
       * @param {Object} object The object to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Object} Returns `object`.
       * @see _.forOwn
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.forOwnRight(new Foo, function(value, key) {
       *   console.log(key);
       * });
       * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
       */
      function forOwnRight(object, iteratee) {
        return object && baseForOwnRight(object, getIteratee(iteratee, 3));
      }
  
      /**
       * Creates an array of function property names from own enumerable properties
       * of `object`.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Object
       * @param {Object} object The object to inspect.
       * @returns {Array} Returns the function names.
       * @see _.functionsIn
       * @example
       *
       * function Foo() {
       *   this.a = _.constant('a');
       *   this.b = _.constant('b');
       * }
       *
       * Foo.prototype.c = _.constant('c');
       *
       * _.functions(new Foo);
       * // => ['a', 'b']
       */
      function functions(object) {
        return object == null ? [] : baseFunctions(object, keys(object));
      }
  
      /**
       * Creates an array of function property names from own and inherited
       * enumerable properties of `object`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Object
       * @param {Object} object The object to inspect.
       * @returns {Array} Returns the function names.
       * @see _.functions
       * @example
       *
       * function Foo() {
       *   this.a = _.constant('a');
       *   this.b = _.constant('b');
       * }
       *
       * Foo.prototype.c = _.constant('c');
       *
       * _.functionsIn(new Foo);
       * // => ['a', 'b', 'c']
       */
      function functionsIn(object) {
        return object == null ? [] : baseFunctions(object, keysIn(object));
      }
  
      /**
       * Gets the value at `path` of `object`. If the resolved value is
       * `undefined`, the `defaultValue` is returned in its place.
       *
       * @static
       * @memberOf _
       * @since 3.7.0
       * @category Object
       * @param {Object} object The object to query.
       * @param {Array|string} path The path of the property to get.
       * @param {*} [defaultValue] The value returned for `undefined` resolved values.
       * @returns {*} Returns the resolved value.
       * @example
       *
       * var object = { 'a': [{ 'b': { 'c': 3 } }] };
       *
       * _.get(object, 'a[0].b.c');
       * // => 3
       *
       * _.get(object, ['a', '0', 'b', 'c']);
       * // => 3
       *
       * _.get(object, 'a.b.c', 'default');
       * // => 'default'
       */
      function get(object, path, defaultValue) {
        var result = object == null ? undefined : baseGet(object, path);
        return result === undefined ? defaultValue : result;
      }
  
      /**
       * Checks if `path` is a direct property of `object`.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Object
       * @param {Object} object The object to query.
       * @param {Array|string} path The path to check.
       * @returns {boolean} Returns `true` if `path` exists, else `false`.
       * @example
       *
       * var object = { 'a': { 'b': 2 } };
       * var other = _.create({ 'a': _.create({ 'b': 2 }) });
       *
       * _.has(object, 'a');
       * // => true
       *
       * _.has(object, 'a.b');
       * // => true
       *
       * _.has(object, ['a', 'b']);
       * // => true
       *
       * _.has(other, 'a');
       * // => false
       */
      function has(object, path) {
        return object != null && hasPath(object, path, baseHas);
      }
  
      /**
       * Checks if `path` is a direct or inherited property of `object`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Object
       * @param {Object} object The object to query.
       * @param {Array|string} path The path to check.
       * @returns {boolean} Returns `true` if `path` exists, else `false`.
       * @example
       *
       * var object = _.create({ 'a': _.create({ 'b': 2 }) });
       *
       * _.hasIn(object, 'a');
       * // => true
       *
       * _.hasIn(object, 'a.b');
       * // => true
       *
       * _.hasIn(object, ['a', 'b']);
       * // => true
       *
       * _.hasIn(object, 'b');
       * // => false
       */
      function hasIn(object, path) {
        return object != null && hasPath(object, path, baseHasIn);
      }
  
      /**
       * Creates an object composed of the inverted keys and values of `object`.
       * If `object` contains duplicate values, subsequent values overwrite
       * property assignments of previous values.
       *
       * @static
       * @memberOf _
       * @since 0.7.0
       * @category Object
       * @param {Object} object The object to invert.
       * @returns {Object} Returns the new inverted object.
       * @example
       *
       * var object = { 'a': 1, 'b': 2, 'c': 1 };
       *
       * _.invert(object);
       * // => { '1': 'c', '2': 'b' }
       */
      var invert = createInverter(function(result, value, key) {
        if (value != null &&
            typeof value.toString != 'function') {
          value = nativeObjectToString.call(value);
        }
  
        result[value] = key;
      }, constant(identity));
  
      /**
       * This method is like `_.invert` except that the inverted object is generated
       * from the results of running each element of `object` thru `iteratee`. The
       * corresponding inverted value of each inverted key is an array of keys
       * responsible for generating the inverted value. The iteratee is invoked
       * with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 4.1.0
       * @category Object
       * @param {Object} object The object to invert.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {Object} Returns the new inverted object.
       * @example
       *
       * var object = { 'a': 1, 'b': 2, 'c': 1 };
       *
       * _.invertBy(object);
       * // => { '1': ['a', 'c'], '2': ['b'] }
       *
       * _.invertBy(object, function(value) {
       *   return 'group' + value;
       * });
       * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
       */
      var invertBy = createInverter(function(result, value, key) {
        if (value != null &&
            typeof value.toString != 'function') {
          value = nativeObjectToString.call(value);
        }
  
        if (hasOwnProperty.call(result, value)) {
          result[value].push(key);
        } else {
          result[value] = [key];
        }
      }, getIteratee);
  
      /**
       * Invokes the method at `path` of `object`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Object
       * @param {Object} object The object to query.
       * @param {Array|string} path The path of the method to invoke.
       * @param {...*} [args] The arguments to invoke the method with.
       * @returns {*} Returns the result of the invoked method.
       * @example
       *
       * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
       *
       * _.invoke(object, 'a[0].b.c.slice', 1, 3);
       * // => [2, 3]
       */
      var invoke = baseRest(baseInvoke);
  
      /**
       * Creates an array of the own enumerable property names of `object`.
       *
       * **Note:** Non-object values are coerced to objects. See the
       * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
       * for more details.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Object
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of property names.
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.keys(new Foo);
       * // => ['a', 'b'] (iteration order is not guaranteed)
       *
       * _.keys('hi');
       * // => ['0', '1']
       */
      function keys(object) {
        return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
      }
  
      /**
       * Creates an array of the own and inherited enumerable property names of `object`.
       *
       * **Note:** Non-object values are coerced to objects.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Object
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of property names.
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.keysIn(new Foo);
       * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
       */
      function keysIn(object) {
        return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
      }
  
      /**
       * The opposite of `_.mapValues`; this method creates an object with the
       * same values as `object` and keys generated by running each own enumerable
       * string keyed property of `object` thru `iteratee`. The iteratee is invoked
       * with three arguments: (value, key, object).
       *
       * @static
       * @memberOf _
       * @since 3.8.0
       * @category Object
       * @param {Object} object The object to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Object} Returns the new mapped object.
       * @see _.mapValues
       * @example
       *
       * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
       *   return key + value;
       * });
       * // => { 'a1': 1, 'b2': 2 }
       */
      function mapKeys(object, iteratee) {
        var result = {};
        iteratee = getIteratee(iteratee, 3);
  
        baseForOwn(object, function(value, key, object) {
          baseAssignValue(result, iteratee(value, key, object), value);
        });
        return result;
      }
  
      /**
       * Creates an object with the same keys as `object` and values generated
       * by running each own enumerable string keyed property of `object` thru
       * `iteratee`. The iteratee is invoked with three arguments:
       * (value, key, object).
       *
       * @static
       * @memberOf _
       * @since 2.4.0
       * @category Object
       * @param {Object} object The object to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Object} Returns the new mapped object.
       * @see _.mapKeys
       * @example
       *
       * var users = {
       *   'fred':    { 'user': 'fred',    'age': 40 },
       *   'pebbles': { 'user': 'pebbles', 'age': 1 }
       * };
       *
       * _.mapValues(users, function(o) { return o.age; });
       * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
       *
       * // The `_.property` iteratee shorthand.
       * _.mapValues(users, 'age');
       * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
       */
      function mapValues(object, iteratee) {
        var result = {};
        iteratee = getIteratee(iteratee, 3);
  
        baseForOwn(object, function(value, key, object) {
          baseAssignValue(result, key, iteratee(value, key, object));
        });
        return result;
      }
  
      /**
       * This method is like `_.assign` except that it recursively merges own and
       * inherited enumerable string keyed properties of source objects into the
       * destination object. Source properties that resolve to `undefined` are
       * skipped if a destination value exists. Array and plain object properties
       * are merged recursively. Other objects and value types are overridden by
       * assignment. Source objects are applied from left to right. Subsequent
       * sources overwrite property assignments of previous sources.
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 0.5.0
       * @category Object
       * @param {Object} object The destination object.
       * @param {...Object} [sources] The source objects.
       * @returns {Object} Returns `object`.
       * @example
       *
       * var object = {
       *   'a': [{ 'b': 2 }, { 'd': 4 }]
       * };
       *
       * var other = {
       *   'a': [{ 'c': 3 }, { 'e': 5 }]
       * };
       *
       * _.merge(object, other);
       * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
       */
      var merge = createAssigner(function(object, source, srcIndex) {
        baseMerge(object, source, srcIndex);
      });
  
      /**
       * This method is like `_.merge` except that it accepts `customizer` which
       * is invoked to produce the merged values of the destination and source
       * properties. If `customizer` returns `undefined`, merging is handled by the
       * method instead. The `customizer` is invoked with six arguments:
       * (objValue, srcValue, key, object, source, stack).
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Object
       * @param {Object} object The destination object.
       * @param {...Object} sources The source objects.
       * @param {Function} customizer The function to customize assigned values.
       * @returns {Object} Returns `object`.
       * @example
       *
       * function customizer(objValue, srcValue) {
       *   if (_.isArray(objValue)) {
       *     return objValue.concat(srcValue);
       *   }
       * }
       *
       * var object = { 'a': [1], 'b': [2] };
       * var other = { 'a': [3], 'b': [4] };
       *
       * _.mergeWith(object, other, customizer);
       * // => { 'a': [1, 3], 'b': [2, 4] }
       */
      var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {
        baseMerge(object, source, srcIndex, customizer);
      });
  
      /**
       * The opposite of `_.pick`; this method creates an object composed of the
       * own and inherited enumerable property paths of `object` that are not omitted.
       *
       * **Note:** This method is considerably slower than `_.pick`.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Object
       * @param {Object} object The source object.
       * @param {...(string|string[])} [paths] The property paths to omit.
       * @returns {Object} Returns the new object.
       * @example
       *
       * var object = { 'a': 1, 'b': '2', 'c': 3 };
       *
       * _.omit(object, ['a', 'c']);
       * // => { 'b': '2' }
       */
      var omit = flatRest(function(object, paths) {
        var result = {};
        if (object == null) {
          return result;
        }
        var isDeep = false;
        paths = arrayMap(paths, function(path) {
          path = castPath(path, object);
          isDeep || (isDeep = path.length > 1);
          return path;
        });
        copyObject(object, getAllKeysIn(object), result);
        if (isDeep) {
          result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
        }
        var length = paths.length;
        while (length--) {
          baseUnset(result, paths[length]);
        }
        return result;
      });
  
      /**
       * The opposite of `_.pickBy`; this method creates an object composed of
       * the own and inherited enumerable string keyed properties of `object` that
       * `predicate` doesn't return truthy for. The predicate is invoked with two
       * arguments: (value, key).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Object
       * @param {Object} object The source object.
       * @param {Function} [predicate=_.identity] The function invoked per property.
       * @returns {Object} Returns the new object.
       * @example
       *
       * var object = { 'a': 1, 'b': '2', 'c': 3 };
       *
       * _.omitBy(object, _.isNumber);
       * // => { 'b': '2' }
       */
      function omitBy(object, predicate) {
        return pickBy(object, negate(getIteratee(predicate)));
      }
  
      /**
       * Creates an object composed of the picked `object` properties.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Object
       * @param {Object} object The source object.
       * @param {...(string|string[])} [paths] The property paths to pick.
       * @returns {Object} Returns the new object.
       * @example
       *
       * var object = { 'a': 1, 'b': '2', 'c': 3 };
       *
       * _.pick(object, ['a', 'c']);
       * // => { 'a': 1, 'c': 3 }
       */
      var pick = flatRest(function(object, paths) {
        return object == null ? {} : basePick(object, paths);
      });
  
      /**
       * Creates an object composed of the `object` properties `predicate` returns
       * truthy for. The predicate is invoked with two arguments: (value, key).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Object
       * @param {Object} object The source object.
       * @param {Function} [predicate=_.identity] The function invoked per property.
       * @returns {Object} Returns the new object.
       * @example
       *
       * var object = { 'a': 1, 'b': '2', 'c': 3 };
       *
       * _.pickBy(object, _.isNumber);
       * // => { 'a': 1, 'c': 3 }
       */
      function pickBy(object, predicate) {
        if (object == null) {
          return {};
        }
        var props = arrayMap(getAllKeysIn(object), function(prop) {
          return [prop];
        });
        predicate = getIteratee(predicate);
        return basePickBy(object, props, function(value, path) {
          return predicate(value, path[0]);
        });
      }
  
      /**
       * This method is like `_.get` except that if the resolved value is a
       * function it's invoked with the `this` binding of its parent object and
       * its result is returned.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Object
       * @param {Object} object The object to query.
       * @param {Array|string} path The path of the property to resolve.
       * @param {*} [defaultValue] The value returned for `undefined` resolved values.
       * @returns {*} Returns the resolved value.
       * @example
       *
       * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
       *
       * _.result(object, 'a[0].b.c1');
       * // => 3
       *
       * _.result(object, 'a[0].b.c2');
       * // => 4
       *
       * _.result(object, 'a[0].b.c3', 'default');
       * // => 'default'
       *
       * _.result(object, 'a[0].b.c3', _.constant('default'));
       * // => 'default'
       */
      function result(object, path, defaultValue) {
        path = castPath(path, object);
  
        var index = -1,
            length = path.length;
  
        // Ensure the loop is entered when path is empty.
        if (!length) {
          length = 1;
          object = undefined;
        }
        while (++index < length) {
          var value = object == null ? undefined : object[toKey(path[index])];
          if (value === undefined) {
            index = length;
            value = defaultValue;
          }
          object = isFunction(value) ? value.call(object) : value;
        }
        return object;
      }
  
      /**
       * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
       * it's created. Arrays are created for missing index properties while objects
       * are created for all other missing properties. Use `_.setWith` to customize
       * `path` creation.
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 3.7.0
       * @category Object
       * @param {Object} object The object to modify.
       * @param {Array|string} path The path of the property to set.
       * @param {*} value The value to set.
       * @returns {Object} Returns `object`.
       * @example
       *
       * var object = { 'a': [{ 'b': { 'c': 3 } }] };
       *
       * _.set(object, 'a[0].b.c', 4);
       * console.log(object.a[0].b.c);
       * // => 4
       *
       * _.set(object, ['x', '0', 'y', 'z'], 5);
       * console.log(object.x[0].y.z);
       * // => 5
       */
      function set(object, path, value) {
        return object == null ? object : baseSet(object, path, value);
      }
  
      /**
       * This method is like `_.set` except that it accepts `customizer` which is
       * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
       * path creation is handled by the method instead. The `customizer` is invoked
       * with three arguments: (nsValue, key, nsObject).
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Object
       * @param {Object} object The object to modify.
       * @param {Array|string} path The path of the property to set.
       * @param {*} value The value to set.
       * @param {Function} [customizer] The function to customize assigned values.
       * @returns {Object} Returns `object`.
       * @example
       *
       * var object = {};
       *
       * _.setWith(object, '[0][1]', 'a', Object);
       * // => { '0': { '1': 'a' } }
       */
      function setWith(object, path, value, customizer) {
        customizer = typeof customizer == 'function' ? customizer : undefined;
        return object == null ? object : baseSet(object, path, value, customizer);
      }
  
      /**
       * Creates an array of own enumerable string keyed-value pairs for `object`
       * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
       * entries are returned.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @alias entries
       * @category Object
       * @param {Object} object The object to query.
       * @returns {Array} Returns the key-value pairs.
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.toPairs(new Foo);
       * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
       */
      var toPairs = createToPairs(keys);
  
      /**
       * Creates an array of own and inherited enumerable string keyed-value pairs
       * for `object` which can be consumed by `_.fromPairs`. If `object` is a map
       * or set, its entries are returned.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @alias entriesIn
       * @category Object
       * @param {Object} object The object to query.
       * @returns {Array} Returns the key-value pairs.
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.toPairsIn(new Foo);
       * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
       */
      var toPairsIn = createToPairs(keysIn);
  
      /**
       * An alternative to `_.reduce`; this method transforms `object` to a new
       * `accumulator` object which is the result of running each of its own
       * enumerable string keyed properties thru `iteratee`, with each invocation
       * potentially mutating the `accumulator` object. If `accumulator` is not
       * provided, a new object with the same `[[Prototype]]` will be used. The
       * iteratee is invoked with four arguments: (accumulator, value, key, object).
       * Iteratee functions may exit iteration early by explicitly returning `false`.
       *
       * @static
       * @memberOf _
       * @since 1.3.0
       * @category Object
       * @param {Object} object The object to iterate over.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @param {*} [accumulator] The custom accumulator value.
       * @returns {*} Returns the accumulated value.
       * @example
       *
       * _.transform([2, 3, 4], function(result, n) {
       *   result.push(n *= n);
       *   return n % 2 == 0;
       * }, []);
       * // => [4, 9]
       *
       * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
       *   (result[value] || (result[value] = [])).push(key);
       * }, {});
       * // => { '1': ['a', 'c'], '2': ['b'] }
       */
      function transform(object, iteratee, accumulator) {
        var isArr = isArray(object),
            isArrLike = isArr || isBuffer(object) || isTypedArray(object);
  
        iteratee = getIteratee(iteratee, 4);
        if (accumulator == null) {
          var Ctor = object && object.constructor;
          if (isArrLike) {
            accumulator = isArr ? new Ctor : [];
          }
          else if (isObject(object)) {
            accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
          }
          else {
            accumulator = {};
          }
        }
        (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {
          return iteratee(accumulator, value, index, object);
        });
        return accumulator;
      }
  
      /**
       * Removes the property at `path` of `object`.
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Object
       * @param {Object} object The object to modify.
       * @param {Array|string} path The path of the property to unset.
       * @returns {boolean} Returns `true` if the property is deleted, else `false`.
       * @example
       *
       * var object = { 'a': [{ 'b': { 'c': 7 } }] };
       * _.unset(object, 'a[0].b.c');
       * // => true
       *
       * console.log(object);
       * // => { 'a': [{ 'b': {} }] };
       *
       * _.unset(object, ['a', '0', 'b', 'c']);
       * // => true
       *
       * console.log(object);
       * // => { 'a': [{ 'b': {} }] };
       */
      function unset(object, path) {
        return object == null ? true : baseUnset(object, path);
      }
  
      /**
       * This method is like `_.set` except that accepts `updater` to produce the
       * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
       * is invoked with one argument: (value).
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 4.6.0
       * @category Object
       * @param {Object} object The object to modify.
       * @param {Array|string} path The path of the property to set.
       * @param {Function} updater The function to produce the updated value.
       * @returns {Object} Returns `object`.
       * @example
       *
       * var object = { 'a': [{ 'b': { 'c': 3 } }] };
       *
       * _.update(object, 'a[0].b.c', function(n) { return n * n; });
       * console.log(object.a[0].b.c);
       * // => 9
       *
       * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
       * console.log(object.x[0].y.z);
       * // => 0
       */
      function update(object, path, updater) {
        return object == null ? object : baseUpdate(object, path, castFunction(updater));
      }
  
      /**
       * This method is like `_.update` except that it accepts `customizer` which is
       * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
       * path creation is handled by the method instead. The `customizer` is invoked
       * with three arguments: (nsValue, key, nsObject).
       *
       * **Note:** This method mutates `object`.
       *
       * @static
       * @memberOf _
       * @since 4.6.0
       * @category Object
       * @param {Object} object The object to modify.
       * @param {Array|string} path The path of the property to set.
       * @param {Function} updater The function to produce the updated value.
       * @param {Function} [customizer] The function to customize assigned values.
       * @returns {Object} Returns `object`.
       * @example
       *
       * var object = {};
       *
       * _.updateWith(object, '[0][1]', _.constant('a'), Object);
       * // => { '0': { '1': 'a' } }
       */
      function updateWith(object, path, updater, customizer) {
        customizer = typeof customizer == 'function' ? customizer : undefined;
        return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
      }
  
      /**
       * Creates an array of the own enumerable string keyed property values of `object`.
       *
       * **Note:** Non-object values are coerced to objects.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Object
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of property values.
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.values(new Foo);
       * // => [1, 2] (iteration order is not guaranteed)
       *
       * _.values('hi');
       * // => ['h', 'i']
       */
      function values(object) {
        return object == null ? [] : baseValues(object, keys(object));
      }
  
      /**
       * Creates an array of the own and inherited enumerable string keyed property
       * values of `object`.
       *
       * **Note:** Non-object values are coerced to objects.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Object
       * @param {Object} object The object to query.
       * @returns {Array} Returns the array of property values.
       * @example
       *
       * function Foo() {
       *   this.a = 1;
       *   this.b = 2;
       * }
       *
       * Foo.prototype.c = 3;
       *
       * _.valuesIn(new Foo);
       * // => [1, 2, 3] (iteration order is not guaranteed)
       */
      function valuesIn(object) {
        return object == null ? [] : baseValues(object, keysIn(object));
      }
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Clamps `number` within the inclusive `lower` and `upper` bounds.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Number
       * @param {number} number The number to clamp.
       * @param {number} [lower] The lower bound.
       * @param {number} upper The upper bound.
       * @returns {number} Returns the clamped number.
       * @example
       *
       * _.clamp(-10, -5, 5);
       * // => -5
       *
       * _.clamp(10, -5, 5);
       * // => 5
       */
      function clamp(number, lower, upper) {
        if (upper === undefined) {
          upper = lower;
          lower = undefined;
        }
        if (upper !== undefined) {
          upper = toNumber(upper);
          upper = upper === upper ? upper : 0;
        }
        if (lower !== undefined) {
          lower = toNumber(lower);
          lower = lower === lower ? lower : 0;
        }
        return baseClamp(toNumber(number), lower, upper);
      }
  
      /**
       * Checks if `n` is between `start` and up to, but not including, `end`. If
       * `end` is not specified, it's set to `start` with `start` then set to `0`.
       * If `start` is greater than `end` the params are swapped to support
       * negative ranges.
       *
       * @static
       * @memberOf _
       * @since 3.3.0
       * @category Number
       * @param {number} number The number to check.
       * @param {number} [start=0] The start of the range.
       * @param {number} end The end of the range.
       * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
       * @see _.range, _.rangeRight
       * @example
       *
       * _.inRange(3, 2, 4);
       * // => true
       *
       * _.inRange(4, 8);
       * // => true
       *
       * _.inRange(4, 2);
       * // => false
       *
       * _.inRange(2, 2);
       * // => false
       *
       * _.inRange(1.2, 2);
       * // => true
       *
       * _.inRange(5.2, 4);
       * // => false
       *
       * _.inRange(-3, -2, -6);
       * // => true
       */
      function inRange(number, start, end) {
        start = toFinite(start);
        if (end === undefined) {
          end = start;
          start = 0;
        } else {
          end = toFinite(end);
        }
        number = toNumber(number);
        return baseInRange(number, start, end);
      }
  
      /**
       * Produces a random number between the inclusive `lower` and `upper` bounds.
       * If only one argument is provided a number between `0` and the given number
       * is returned. If `floating` is `true`, or either `lower` or `upper` are
       * floats, a floating-point number is returned instead of an integer.
       *
       * **Note:** JavaScript follows the IEEE-754 standard for resolving
       * floating-point values which can produce unexpected results.
       *
       * @static
       * @memberOf _
       * @since 0.7.0
       * @category Number
       * @param {number} [lower=0] The lower bound.
       * @param {number} [upper=1] The upper bound.
       * @param {boolean} [floating] Specify returning a floating-point number.
       * @returns {number} Returns the random number.
       * @example
       *
       * _.random(0, 5);
       * // => an integer between 0 and 5
       *
       * _.random(5);
       * // => also an integer between 0 and 5
       *
       * _.random(5, true);
       * // => a floating-point number between 0 and 5
       *
       * _.random(1.2, 5.2);
       * // => a floating-point number between 1.2 and 5.2
       */
      function random(lower, upper, floating) {
        if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
          upper = floating = undefined;
        }
        if (floating === undefined) {
          if (typeof upper == 'boolean') {
            floating = upper;
            upper = undefined;
          }
          else if (typeof lower == 'boolean') {
            floating = lower;
            lower = undefined;
          }
        }
        if (lower === undefined && upper === undefined) {
          lower = 0;
          upper = 1;
        }
        else {
          lower = toFinite(lower);
          if (upper === undefined) {
            upper = lower;
            lower = 0;
          } else {
            upper = toFinite(upper);
          }
        }
        if (lower > upper) {
          var temp = lower;
          lower = upper;
          upper = temp;
        }
        if (floating || lower % 1 || upper % 1) {
          var rand = nativeRandom();
          return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);
        }
        return baseRandom(lower, upper);
      }
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to convert.
       * @returns {string} Returns the camel cased string.
       * @example
       *
       * _.camelCase('Foo Bar');
       * // => 'fooBar'
       *
       * _.camelCase('--foo-bar--');
       * // => 'fooBar'
       *
       * _.camelCase('__FOO_BAR__');
       * // => 'fooBar'
       */
      var camelCase = createCompounder(function(result, word, index) {
        word = word.toLowerCase();
        return result + (index ? capitalize(word) : word);
      });
  
      /**
       * Converts the first character of `string` to upper case and the remaining
       * to lower case.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to capitalize.
       * @returns {string} Returns the capitalized string.
       * @example
       *
       * _.capitalize('FRED');
       * // => 'Fred'
       */
      function capitalize(string) {
        return upperFirst(toString(string).toLowerCase());
      }
  
      /**
       * Deburrs `string` by converting
       * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
       * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
       * letters to basic Latin letters and removing
       * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to deburr.
       * @returns {string} Returns the deburred string.
       * @example
       *
       * _.deburr('déjà vu');
       * // => 'deja vu'
       */
      function deburr(string) {
        string = toString(string);
        return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
      }
  
      /**
       * Checks if `string` ends with the given target string.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to inspect.
       * @param {string} [target] The string to search for.
       * @param {number} [position=string.length] The position to search up to.
       * @returns {boolean} Returns `true` if `string` ends with `target`,
       *  else `false`.
       * @example
       *
       * _.endsWith('abc', 'c');
       * // => true
       *
       * _.endsWith('abc', 'b');
       * // => false
       *
       * _.endsWith('abc', 'b', 2);
       * // => true
       */
      function endsWith(string, target, position) {
        string = toString(string);
        target = baseToString(target);
  
        var length = string.length;
        position = position === undefined
          ? length
          : baseClamp(toInteger(position), 0, length);
  
        var end = position;
        position -= target.length;
        return position >= 0 && string.slice(position, end) == target;
      }
  
      /**
       * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
       * corresponding HTML entities.
       *
       * **Note:** No other characters are escaped. To escape additional
       * characters use a third-party library like [_he_](https://mths.be/he).
       *
       * Though the ">" character is escaped for symmetry, characters like
       * ">" and "/" don't need escaping in HTML and have no special meaning
       * unless they're part of a tag or unquoted attribute value. See
       * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
       * (under "semi-related fun fact") for more details.
       *
       * When working with HTML you should always
       * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
       * XSS vectors.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category String
       * @param {string} [string=''] The string to escape.
       * @returns {string} Returns the escaped string.
       * @example
       *
       * _.escape('fred, barney, & pebbles');
       * // => 'fred, barney, &amp; pebbles'
       */
      function escape(string) {
        string = toString(string);
        return (string && reHasUnescapedHtml.test(string))
          ? string.replace(reUnescapedHtml, escapeHtmlChar)
          : string;
      }
  
      /**
       * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
       * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to escape.
       * @returns {string} Returns the escaped string.
       * @example
       *
       * _.escapeRegExp('[lodash](https://lodash.com/)');
       * // => '\[lodash\]\(https://lodash\.com/\)'
       */
      function escapeRegExp(string) {
        string = toString(string);
        return (string && reHasRegExpChar.test(string))
          ? string.replace(reRegExpChar, '\\$&')
          : string;
      }
  
      /**
       * Converts `string` to
       * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to convert.
       * @returns {string} Returns the kebab cased string.
       * @example
       *
       * _.kebabCase('Foo Bar');
       * // => 'foo-bar'
       *
       * _.kebabCase('fooBar');
       * // => 'foo-bar'
       *
       * _.kebabCase('__FOO_BAR__');
       * // => 'foo-bar'
       */
      var kebabCase = createCompounder(function(result, word, index) {
        return result + (index ? '-' : '') + word.toLowerCase();
      });
  
      /**
       * Converts `string`, as space separated words, to lower case.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to convert.
       * @returns {string} Returns the lower cased string.
       * @example
       *
       * _.lowerCase('--Foo-Bar--');
       * // => 'foo bar'
       *
       * _.lowerCase('fooBar');
       * // => 'foo bar'
       *
       * _.lowerCase('__FOO_BAR__');
       * // => 'foo bar'
       */
      var lowerCase = createCompounder(function(result, word, index) {
        return result + (index ? ' ' : '') + word.toLowerCase();
      });
  
      /**
       * Converts the first character of `string` to lower case.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to convert.
       * @returns {string} Returns the converted string.
       * @example
       *
       * _.lowerFirst('Fred');
       * // => 'fred'
       *
       * _.lowerFirst('FRED');
       * // => 'fRED'
       */
      var lowerFirst = createCaseFirst('toLowerCase');
  
      /**
       * Pads `string` on the left and right sides if it's shorter than `length`.
       * Padding characters are truncated if they can't be evenly divided by `length`.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to pad.
       * @param {number} [length=0] The padding length.
       * @param {string} [chars=' '] The string used as padding.
       * @returns {string} Returns the padded string.
       * @example
       *
       * _.pad('abc', 8);
       * // => '  abc   '
       *
       * _.pad('abc', 8, '_-');
       * // => '_-abc_-_'
       *
       * _.pad('abc', 3);
       * // => 'abc'
       */
      function pad(string, length, chars) {
        string = toString(string);
        length = toInteger(length);
  
        var strLength = length ? stringSize(string) : 0;
        if (!length || strLength >= length) {
          return string;
        }
        var mid = (length - strLength) / 2;
        return (
          createPadding(nativeFloor(mid), chars) +
          string +
          createPadding(nativeCeil(mid), chars)
        );
      }
  
      /**
       * Pads `string` on the right side if it's shorter than `length`. Padding
       * characters are truncated if they exceed `length`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to pad.
       * @param {number} [length=0] The padding length.
       * @param {string} [chars=' '] The string used as padding.
       * @returns {string} Returns the padded string.
       * @example
       *
       * _.padEnd('abc', 6);
       * // => 'abc   '
       *
       * _.padEnd('abc', 6, '_-');
       * // => 'abc_-_'
       *
       * _.padEnd('abc', 3);
       * // => 'abc'
       */
      function padEnd(string, length, chars) {
        string = toString(string);
        length = toInteger(length);
  
        var strLength = length ? stringSize(string) : 0;
        return (length && strLength < length)
          ? (string + createPadding(length - strLength, chars))
          : string;
      }
  
      /**
       * Pads `string` on the left side if it's shorter than `length`. Padding
       * characters are truncated if they exceed `length`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to pad.
       * @param {number} [length=0] The padding length.
       * @param {string} [chars=' '] The string used as padding.
       * @returns {string} Returns the padded string.
       * @example
       *
       * _.padStart('abc', 6);
       * // => '   abc'
       *
       * _.padStart('abc', 6, '_-');
       * // => '_-_abc'
       *
       * _.padStart('abc', 3);
       * // => 'abc'
       */
      function padStart(string, length, chars) {
        string = toString(string);
        length = toInteger(length);
  
        var strLength = length ? stringSize(string) : 0;
        return (length && strLength < length)
          ? (createPadding(length - strLength, chars) + string)
          : string;
      }
  
      /**
       * Converts `string` to an integer of the specified radix. If `radix` is
       * `undefined` or `0`, a `radix` of `10` is used unless `value` is a
       * hexadecimal, in which case a `radix` of `16` is used.
       *
       * **Note:** This method aligns with the
       * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
       *
       * @static
       * @memberOf _
       * @since 1.1.0
       * @category String
       * @param {string} string The string to convert.
       * @param {number} [radix=10] The radix to interpret `value` by.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {number} Returns the converted integer.
       * @example
       *
       * _.parseInt('08');
       * // => 8
       *
       * _.map(['6', '08', '10'], _.parseInt);
       * // => [6, 8, 10]
       */
      function parseInt(string, radix, guard) {
        if (guard || radix == null) {
          radix = 0;
        } else if (radix) {
          radix = +radix;
        }
        return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
      }
  
      /**
       * Repeats the given string `n` times.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to repeat.
       * @param {number} [n=1] The number of times to repeat the string.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {string} Returns the repeated string.
       * @example
       *
       * _.repeat('*', 3);
       * // => '***'
       *
       * _.repeat('abc', 2);
       * // => 'abcabc'
       *
       * _.repeat('abc', 0);
       * // => ''
       */
      function repeat(string, n, guard) {
        if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {
          n = 1;
        } else {
          n = toInteger(n);
        }
        return baseRepeat(toString(string), n);
      }
  
      /**
       * Replaces matches for `pattern` in `string` with `replacement`.
       *
       * **Note:** This method is based on
       * [`String#replace`](https://mdn.io/String/replace).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to modify.
       * @param {RegExp|string} pattern The pattern to replace.
       * @param {Function|string} replacement The match replacement.
       * @returns {string} Returns the modified string.
       * @example
       *
       * _.replace('Hi Fred', 'Fred', 'Barney');
       * // => 'Hi Barney'
       */
      function replace() {
        var args = arguments,
            string = toString(args[0]);
  
        return args.length < 3 ? string : string.replace(args[1], args[2]);
      }
  
      /**
       * Converts `string` to
       * [snake case](https://en.wikipedia.org/wiki/Snake_case).
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to convert.
       * @returns {string} Returns the snake cased string.
       * @example
       *
       * _.snakeCase('Foo Bar');
       * // => 'foo_bar'
       *
       * _.snakeCase('fooBar');
       * // => 'foo_bar'
       *
       * _.snakeCase('--FOO-BAR--');
       * // => 'foo_bar'
       */
      var snakeCase = createCompounder(function(result, word, index) {
        return result + (index ? '_' : '') + word.toLowerCase();
      });
  
      /**
       * Splits `string` by `separator`.
       *
       * **Note:** This method is based on
       * [`String#split`](https://mdn.io/String/split).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to split.
       * @param {RegExp|string} separator The separator pattern to split by.
       * @param {number} [limit] The length to truncate results to.
       * @returns {Array} Returns the string segments.
       * @example
       *
       * _.split('a-b-c', '-', 2);
       * // => ['a', 'b']
       */
      function split(string, separator, limit) {
        if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
          separator = limit = undefined;
        }
        limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;
        if (!limit) {
          return [];
        }
        string = toString(string);
        if (string && (
              typeof separator == 'string' ||
              (separator != null && !isRegExp(separator))
            )) {
          separator = baseToString(separator);
          if (!separator && hasUnicode(string)) {
            return castSlice(stringToArray(string), 0, limit);
          }
        }
        return string.split(separator, limit);
      }
  
      /**
       * Converts `string` to
       * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
       *
       * @static
       * @memberOf _
       * @since 3.1.0
       * @category String
       * @param {string} [string=''] The string to convert.
       * @returns {string} Returns the start cased string.
       * @example
       *
       * _.startCase('--foo-bar--');
       * // => 'Foo Bar'
       *
       * _.startCase('fooBar');
       * // => 'Foo Bar'
       *
       * _.startCase('__FOO_BAR__');
       * // => 'FOO BAR'
       */
      var startCase = createCompounder(function(result, word, index) {
        return result + (index ? ' ' : '') + upperFirst(word);
      });
  
      /**
       * Checks if `string` starts with the given target string.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to inspect.
       * @param {string} [target] The string to search for.
       * @param {number} [position=0] The position to search from.
       * @returns {boolean} Returns `true` if `string` starts with `target`,
       *  else `false`.
       * @example
       *
       * _.startsWith('abc', 'a');
       * // => true
       *
       * _.startsWith('abc', 'b');
       * // => false
       *
       * _.startsWith('abc', 'b', 1);
       * // => true
       */
      function startsWith(string, target, position) {
        string = toString(string);
        position = position == null
          ? 0
          : baseClamp(toInteger(position), 0, string.length);
  
        target = baseToString(target);
        return string.slice(position, position + target.length) == target;
      }
  
      /**
       * Creates a compiled template function that can interpolate data properties
       * in "interpolate" delimiters, HTML-escape interpolated data properties in
       * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
       * properties may be accessed as free variables in the template. If a setting
       * object is given, it takes precedence over `_.templateSettings` values.
       *
       * **Note:** In the development build `_.template` utilizes
       * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
       * for easier debugging.
       *
       * For more information on precompiling templates see
       * [lodash's custom builds documentation](https://lodash.com/custom-builds).
       *
       * For more information on Chrome extension sandboxes see
       * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category String
       * @param {string} [string=''] The template string.
       * @param {Object} [options={}] The options object.
       * @param {RegExp} [options.escape=_.templateSettings.escape]
       *  The HTML "escape" delimiter.
       * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
       *  The "evaluate" delimiter.
       * @param {Object} [options.imports=_.templateSettings.imports]
       *  An object to import into the template as free variables.
       * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
       *  The "interpolate" delimiter.
       * @param {string} [options.sourceURL='lodash.templateSources[n]']
       *  The sourceURL of the compiled template.
       * @param {string} [options.variable='obj']
       *  The data object variable name.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Function} Returns the compiled template function.
       * @example
       *
       * // Use the "interpolate" delimiter to create a compiled template.
       * var compiled = _.template('hello <%= user %>!');
       * compiled({ 'user': 'fred' });
       * // => 'hello fred!'
       *
       * // Use the HTML "escape" delimiter to escape data property values.
       * var compiled = _.template('<b><%- value %></b>');
       * compiled({ 'value': '<script>' });
       * // => '<b>&lt;script&gt;</b>'
       *
       * // Use the "evaluate" delimiter to execute JavaScript and generate HTML.
       * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
       * compiled({ 'users': ['fred', 'barney'] });
       * // => '<li>fred</li><li>barney</li>'
       *
       * // Use the internal `print` function in "evaluate" delimiters.
       * var compiled = _.template('<% print("hello " + user); %>!');
       * compiled({ 'user': 'barney' });
       * // => 'hello barney!'
       *
       * // Use the ES template literal delimiter as an "interpolate" delimiter.
       * // Disable support by replacing the "interpolate" delimiter.
       * var compiled = _.template('hello ${ user }!');
       * compiled({ 'user': 'pebbles' });
       * // => 'hello pebbles!'
       *
       * // Use backslashes to treat delimiters as plain text.
       * var compiled = _.template('<%= "\\<%- value %\\>" %>');
       * compiled({ 'value': 'ignored' });
       * // => '<%- value %>'
       *
       * // Use the `imports` option to import `jQuery` as `jq`.
       * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
       * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
       * compiled({ 'users': ['fred', 'barney'] });
       * // => '<li>fred</li><li>barney</li>'
       *
       * // Use the `sourceURL` option to specify a custom sourceURL for the template.
       * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
       * compiled(data);
       * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector.
       *
       * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.
       * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
       * compiled.source;
       * // => function(data) {
       * //   var __t, __p = '';
       * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
       * //   return __p;
       * // }
       *
       * // Use custom template delimiters.
       * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
       * var compiled = _.template('hello {{ user }}!');
       * compiled({ 'user': 'mustache' });
       * // => 'hello mustache!'
       *
       * // Use the `source` property to inline compiled templates for meaningful
       * // line numbers in error messages and stack traces.
       * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\
       *   var JST = {\
       *     "main": ' + _.template(mainText).source + '\
       *   };\
       * ');
       */
      function template(string, options, guard) {
        // Based on John Resig's `tmpl` implementation
        // (http://ejohn.org/blog/javascript-micro-templating/)
        // and Laura Doktorova's doT.js (https://github.com/olado/doT).
        var settings = lodash.templateSettings;
  
        if (guard && isIterateeCall(string, options, guard)) {
          options = undefined;
        }
        string = toString(string);
        options = assignInWith({}, options, settings, customDefaultsAssignIn);
  
        var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
            importsKeys = keys(imports),
            importsValues = baseValues(imports, importsKeys);
  
        var isEscaping,
            isEvaluating,
            index = 0,
            interpolate = options.interpolate || reNoMatch,
            source = "__p += '";
  
        // Compile the regexp to match each delimiter.
        var reDelimiters = RegExp(
          (options.escape || reNoMatch).source + '|' +
          interpolate.source + '|' +
          (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
          (options.evaluate || reNoMatch).source + '|$'
        , 'g');
  
        // Use a sourceURL for easier debugging.
        // The sourceURL gets injected into the source that's eval-ed, so be careful
        // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in
        // and escape the comment, thus injecting code that gets evaled.
        var sourceURL = '//# sourceURL=' +
          (hasOwnProperty.call(options, 'sourceURL')
            ? (options.sourceURL + '').replace(/\s/g, ' ')
            : ('lodash.templateSources[' + (++templateCounter) + ']')
          ) + '\n';
  
        string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
          interpolateValue || (interpolateValue = esTemplateValue);
  
          // Escape characters that can't be included in string literals.
          source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);
  
          // Replace delimiters with snippets.
          if (escapeValue) {
            isEscaping = true;
            source += "' +\n__e(" + escapeValue + ") +\n'";
          }
          if (evaluateValue) {
            isEvaluating = true;
            source += "';\n" + evaluateValue + ";\n__p += '";
          }
          if (interpolateValue) {
            source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
          }
          index = offset + match.length;
  
          // The JS engine embedded in Adobe products needs `match` returned in
          // order to produce the correct `offset` value.
          return match;
        });
  
        source += "';\n";
  
        // If `variable` is not specified wrap a with-statement around the generated
        // code to add the data object to the top of the scope chain.
        var variable = hasOwnProperty.call(options, 'variable') && options.variable;
        if (!variable) {
          source = 'with (obj) {\n' + source + '\n}\n';
        }
        // Cleanup code by stripping empty strings.
        source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
          .replace(reEmptyStringMiddle, '$1')
          .replace(reEmptyStringTrailing, '$1;');
  
        // Frame code as the function body.
        source = 'function(' + (variable || 'obj') + ') {\n' +
          (variable
            ? ''
            : 'obj || (obj = {});\n'
          ) +
          "var __t, __p = ''" +
          (isEscaping
             ? ', __e = _.escape'
             : ''
          ) +
          (isEvaluating
            ? ', __j = Array.prototype.join;\n' +
              "function print() { __p += __j.call(arguments, '') }\n"
            : ';\n'
          ) +
          source +
          'return __p\n}';
  
        var result = attempt(function() {
          return Function(importsKeys, sourceURL + 'return ' + source)
            .apply(undefined, importsValues);
        });
  
        // Provide the compiled function's source by its `toString` method or
        // the `source` property as a convenience for inlining compiled templates.
        result.source = source;
        if (isError(result)) {
          throw result;
        }
        return result;
      }
  
      /**
       * Converts `string`, as a whole, to lower case just like
       * [String#toLowerCase](https://mdn.io/toLowerCase).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to convert.
       * @returns {string} Returns the lower cased string.
       * @example
       *
       * _.toLower('--Foo-Bar--');
       * // => '--foo-bar--'
       *
       * _.toLower('fooBar');
       * // => 'foobar'
       *
       * _.toLower('__FOO_BAR__');
       * // => '__foo_bar__'
       */
      function toLower(value) {
        return toString(value).toLowerCase();
      }
  
      /**
       * Converts `string`, as a whole, to upper case just like
       * [String#toUpperCase](https://mdn.io/toUpperCase).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to convert.
       * @returns {string} Returns the upper cased string.
       * @example
       *
       * _.toUpper('--foo-bar--');
       * // => '--FOO-BAR--'
       *
       * _.toUpper('fooBar');
       * // => 'FOOBAR'
       *
       * _.toUpper('__foo_bar__');
       * // => '__FOO_BAR__'
       */
      function toUpper(value) {
        return toString(value).toUpperCase();
      }
  
      /**
       * Removes leading and trailing whitespace or specified characters from `string`.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to trim.
       * @param {string} [chars=whitespace] The characters to trim.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {string} Returns the trimmed string.
       * @example
       *
       * _.trim('  abc  ');
       * // => 'abc'
       *
       * _.trim('-_-abc-_-', '_-');
       * // => 'abc'
       *
       * _.map(['  foo  ', '  bar  '], _.trim);
       * // => ['foo', 'bar']
       */
      function trim(string, chars, guard) {
        string = toString(string);
        if (string && (guard || chars === undefined)) {
          return string.replace(reTrim, '');
        }
        if (!string || !(chars = baseToString(chars))) {
          return string;
        }
        var strSymbols = stringToArray(string),
            chrSymbols = stringToArray(chars),
            start = charsStartIndex(strSymbols, chrSymbols),
            end = charsEndIndex(strSymbols, chrSymbols) + 1;
  
        return castSlice(strSymbols, start, end).join('');
      }
  
      /**
       * Removes trailing whitespace or specified characters from `string`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to trim.
       * @param {string} [chars=whitespace] The characters to trim.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {string} Returns the trimmed string.
       * @example
       *
       * _.trimEnd('  abc  ');
       * // => '  abc'
       *
       * _.trimEnd('-_-abc-_-', '_-');
       * // => '-_-abc'
       */
      function trimEnd(string, chars, guard) {
        string = toString(string);
        if (string && (guard || chars === undefined)) {
          return string.replace(reTrimEnd, '');
        }
        if (!string || !(chars = baseToString(chars))) {
          return string;
        }
        var strSymbols = stringToArray(string),
            end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;
  
        return castSlice(strSymbols, 0, end).join('');
      }
  
      /**
       * Removes leading whitespace or specified characters from `string`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to trim.
       * @param {string} [chars=whitespace] The characters to trim.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {string} Returns the trimmed string.
       * @example
       *
       * _.trimStart('  abc  ');
       * // => 'abc  '
       *
       * _.trimStart('-_-abc-_-', '_-');
       * // => 'abc-_-'
       */
      function trimStart(string, chars, guard) {
        string = toString(string);
        if (string && (guard || chars === undefined)) {
          return string.replace(reTrimStart, '');
        }
        if (!string || !(chars = baseToString(chars))) {
          return string;
        }
        var strSymbols = stringToArray(string),
            start = charsStartIndex(strSymbols, stringToArray(chars));
  
        return castSlice(strSymbols, start).join('');
      }
  
      /**
       * Truncates `string` if it's longer than the given maximum string length.
       * The last characters of the truncated string are replaced with the omission
       * string which defaults to "...".
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to truncate.
       * @param {Object} [options={}] The options object.
       * @param {number} [options.length=30] The maximum string length.
       * @param {string} [options.omission='...'] The string to indicate text is omitted.
       * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
       * @returns {string} Returns the truncated string.
       * @example
       *
       * _.truncate('hi-diddly-ho there, neighborino');
       * // => 'hi-diddly-ho there, neighbo...'
       *
       * _.truncate('hi-diddly-ho there, neighborino', {
       *   'length': 24,
       *   'separator': ' '
       * });
       * // => 'hi-diddly-ho there,...'
       *
       * _.truncate('hi-diddly-ho there, neighborino', {
       *   'length': 24,
       *   'separator': /,? +/
       * });
       * // => 'hi-diddly-ho there...'
       *
       * _.truncate('hi-diddly-ho there, neighborino', {
       *   'omission': ' [...]'
       * });
       * // => 'hi-diddly-ho there, neig [...]'
       */
      function truncate(string, options) {
        var length = DEFAULT_TRUNC_LENGTH,
            omission = DEFAULT_TRUNC_OMISSION;
  
        if (isObject(options)) {
          var separator = 'separator' in options ? options.separator : separator;
          length = 'length' in options ? toInteger(options.length) : length;
          omission = 'omission' in options ? baseToString(options.omission) : omission;
        }
        string = toString(string);
  
        var strLength = string.length;
        if (hasUnicode(string)) {
          var strSymbols = stringToArray(string);
          strLength = strSymbols.length;
        }
        if (length >= strLength) {
          return string;
        }
        var end = length - stringSize(omission);
        if (end < 1) {
          return omission;
        }
        var result = strSymbols
          ? castSlice(strSymbols, 0, end).join('')
          : string.slice(0, end);
  
        if (separator === undefined) {
          return result + omission;
        }
        if (strSymbols) {
          end += (result.length - end);
        }
        if (isRegExp(separator)) {
          if (string.slice(end).search(separator)) {
            var match,
                substring = result;
  
            if (!separator.global) {
              separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');
            }
            separator.lastIndex = 0;
            while ((match = separator.exec(substring))) {
              var newEnd = match.index;
            }
            result = result.slice(0, newEnd === undefined ? end : newEnd);
          }
        } else if (string.indexOf(baseToString(separator), end) != end) {
          var index = result.lastIndexOf(separator);
          if (index > -1) {
            result = result.slice(0, index);
          }
        }
        return result + omission;
      }
  
      /**
       * The inverse of `_.escape`; this method converts the HTML entities
       * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
       * their corresponding characters.
       *
       * **Note:** No other HTML entities are unescaped. To unescape additional
       * HTML entities use a third-party library like [_he_](https://mths.be/he).
       *
       * @static
       * @memberOf _
       * @since 0.6.0
       * @category String
       * @param {string} [string=''] The string to unescape.
       * @returns {string} Returns the unescaped string.
       * @example
       *
       * _.unescape('fred, barney, &amp; pebbles');
       * // => 'fred, barney, & pebbles'
       */
      function unescape(string) {
        string = toString(string);
        return (string && reHasEscapedHtml.test(string))
          ? string.replace(reEscapedHtml, unescapeHtmlChar)
          : string;
      }
  
      /**
       * Converts `string`, as space separated words, to upper case.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to convert.
       * @returns {string} Returns the upper cased string.
       * @example
       *
       * _.upperCase('--foo-bar');
       * // => 'FOO BAR'
       *
       * _.upperCase('fooBar');
       * // => 'FOO BAR'
       *
       * _.upperCase('__foo_bar__');
       * // => 'FOO BAR'
       */
      var upperCase = createCompounder(function(result, word, index) {
        return result + (index ? ' ' : '') + word.toUpperCase();
      });
  
      /**
       * Converts the first character of `string` to upper case.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category String
       * @param {string} [string=''] The string to convert.
       * @returns {string} Returns the converted string.
       * @example
       *
       * _.upperFirst('fred');
       * // => 'Fred'
       *
       * _.upperFirst('FRED');
       * // => 'FRED'
       */
      var upperFirst = createCaseFirst('toUpperCase');
  
      /**
       * Splits `string` into an array of its words.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category String
       * @param {string} [string=''] The string to inspect.
       * @param {RegExp|string} [pattern] The pattern to match words.
       * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
       * @returns {Array} Returns the words of `string`.
       * @example
       *
       * _.words('fred, barney, & pebbles');
       * // => ['fred', 'barney', 'pebbles']
       *
       * _.words('fred, barney, & pebbles', /[^, ]+/g);
       * // => ['fred', 'barney', '&', 'pebbles']
       */
      function words(string, pattern, guard) {
        string = toString(string);
        pattern = guard ? undefined : pattern;
  
        if (pattern === undefined) {
          return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
        }
        return string.match(pattern) || [];
      }
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Attempts to invoke `func`, returning either the result or the caught error
       * object. Any additional arguments are provided to `func` when it's invoked.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Util
       * @param {Function} func The function to attempt.
       * @param {...*} [args] The arguments to invoke `func` with.
       * @returns {*} Returns the `func` result or error object.
       * @example
       *
       * // Avoid throwing errors for invalid selectors.
       * var elements = _.attempt(function(selector) {
       *   return document.querySelectorAll(selector);
       * }, '>_>');
       *
       * if (_.isError(elements)) {
       *   elements = [];
       * }
       */
      var attempt = baseRest(function(func, args) {
        try {
          return apply(func, undefined, args);
        } catch (e) {
          return isError(e) ? e : new Error(e);
        }
      });
  
      /**
       * Binds methods of an object to the object itself, overwriting the existing
       * method.
       *
       * **Note:** This method doesn't set the "length" property of bound functions.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Util
       * @param {Object} object The object to bind and assign the bound methods to.
       * @param {...(string|string[])} methodNames The object method names to bind.
       * @returns {Object} Returns `object`.
       * @example
       *
       * var view = {
       *   'label': 'docs',
       *   'click': function() {
       *     console.log('clicked ' + this.label);
       *   }
       * };
       *
       * _.bindAll(view, ['click']);
       * jQuery(element).on('click', view.click);
       * // => Logs 'clicked docs' when clicked.
       */
      var bindAll = flatRest(function(object, methodNames) {
        arrayEach(methodNames, function(key) {
          key = toKey(key);
          baseAssignValue(object, key, bind(object[key], object));
        });
        return object;
      });
  
      /**
       * Creates a function that iterates over `pairs` and invokes the corresponding
       * function of the first predicate to return truthy. The predicate-function
       * pairs are invoked with the `this` binding and arguments of the created
       * function.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Util
       * @param {Array} pairs The predicate-function pairs.
       * @returns {Function} Returns the new composite function.
       * @example
       *
       * var func = _.cond([
       *   [_.matches({ 'a': 1 }),           _.constant('matches A')],
       *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
       *   [_.stubTrue,                      _.constant('no match')]
       * ]);
       *
       * func({ 'a': 1, 'b': 2 });
       * // => 'matches A'
       *
       * func({ 'a': 0, 'b': 1 });
       * // => 'matches B'
       *
       * func({ 'a': '1', 'b': '2' });
       * // => 'no match'
       */
      function cond(pairs) {
        var length = pairs == null ? 0 : pairs.length,
            toIteratee = getIteratee();
  
        pairs = !length ? [] : arrayMap(pairs, function(pair) {
          if (typeof pair[1] != 'function') {
            throw new TypeError(FUNC_ERROR_TEXT);
          }
          return [toIteratee(pair[0]), pair[1]];
        });
  
        return baseRest(function(args) {
          var index = -1;
          while (++index < length) {
            var pair = pairs[index];
            if (apply(pair[0], this, args)) {
              return apply(pair[1], this, args);
            }
          }
        });
      }
  
      /**
       * Creates a function that invokes the predicate properties of `source` with
       * the corresponding property values of a given object, returning `true` if
       * all predicates return truthy, else `false`.
       *
       * **Note:** The created function is equivalent to `_.conformsTo` with
       * `source` partially applied.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Util
       * @param {Object} source The object of property predicates to conform to.
       * @returns {Function} Returns the new spec function.
       * @example
       *
       * var objects = [
       *   { 'a': 2, 'b': 1 },
       *   { 'a': 1, 'b': 2 }
       * ];
       *
       * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));
       * // => [{ 'a': 1, 'b': 2 }]
       */
      function conforms(source) {
        return baseConforms(baseClone(source, CLONE_DEEP_FLAG));
      }
  
      /**
       * Creates a function that returns `value`.
       *
       * @static
       * @memberOf _
       * @since 2.4.0
       * @category Util
       * @param {*} value The value to return from the new function.
       * @returns {Function} Returns the new constant function.
       * @example
       *
       * var objects = _.times(2, _.constant({ 'a': 1 }));
       *
       * console.log(objects);
       * // => [{ 'a': 1 }, { 'a': 1 }]
       *
       * console.log(objects[0] === objects[1]);
       * // => true
       */
      function constant(value) {
        return function() {
          return value;
        };
      }
  
      /**
       * Checks `value` to determine whether a default value should be returned in
       * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
       * or `undefined`.
       *
       * @static
       * @memberOf _
       * @since 4.14.0
       * @category Util
       * @param {*} value The value to check.
       * @param {*} defaultValue The default value.
       * @returns {*} Returns the resolved value.
       * @example
       *
       * _.defaultTo(1, 10);
       * // => 1
       *
       * _.defaultTo(undefined, 10);
       * // => 10
       */
      function defaultTo(value, defaultValue) {
        return (value == null || value !== value) ? defaultValue : value;
      }
  
      /**
       * Creates a function that returns the result of invoking the given functions
       * with the `this` binding of the created function, where each successive
       * invocation is supplied the return value of the previous.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Util
       * @param {...(Function|Function[])} [funcs] The functions to invoke.
       * @returns {Function} Returns the new composite function.
       * @see _.flowRight
       * @example
       *
       * function square(n) {
       *   return n * n;
       * }
       *
       * var addSquare = _.flow([_.add, square]);
       * addSquare(1, 2);
       * // => 9
       */
      var flow = createFlow();
  
      /**
       * This method is like `_.flow` except that it creates a function that
       * invokes the given functions from right to left.
       *
       * @static
       * @since 3.0.0
       * @memberOf _
       * @category Util
       * @param {...(Function|Function[])} [funcs] The functions to invoke.
       * @returns {Function} Returns the new composite function.
       * @see _.flow
       * @example
       *
       * function square(n) {
       *   return n * n;
       * }
       *
       * var addSquare = _.flowRight([square, _.add]);
       * addSquare(1, 2);
       * // => 9
       */
      var flowRight = createFlow(true);
  
      /**
       * This method returns the first argument it receives.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Util
       * @param {*} value Any value.
       * @returns {*} Returns `value`.
       * @example
       *
       * var object = { 'a': 1 };
       *
       * console.log(_.identity(object) === object);
       * // => true
       */
      function identity(value) {
        return value;
      }
  
      /**
       * Creates a function that invokes `func` with the arguments of the created
       * function. If `func` is a property name, the created function returns the
       * property value for a given element. If `func` is an array or object, the
       * created function returns `true` for elements that contain the equivalent
       * source properties, otherwise it returns `false`.
       *
       * @static
       * @since 4.0.0
       * @memberOf _
       * @category Util
       * @param {*} [func=_.identity] The value to convert to a callback.
       * @returns {Function} Returns the callback.
       * @example
       *
       * var users = [
       *   { 'user': 'barney', 'age': 36, 'active': true },
       *   { 'user': 'fred',   'age': 40, 'active': false }
       * ];
       *
       * // The `_.matches` iteratee shorthand.
       * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
       * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
       *
       * // The `_.matchesProperty` iteratee shorthand.
       * _.filter(users, _.iteratee(['user', 'fred']));
       * // => [{ 'user': 'fred', 'age': 40 }]
       *
       * // The `_.property` iteratee shorthand.
       * _.map(users, _.iteratee('user'));
       * // => ['barney', 'fred']
       *
       * // Create custom iteratee shorthands.
       * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
       *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
       *     return func.test(string);
       *   };
       * });
       *
       * _.filter(['abc', 'def'], /ef/);
       * // => ['def']
       */
      function iteratee(func) {
        return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
      }
  
      /**
       * Creates a function that performs a partial deep comparison between a given
       * object and `source`, returning `true` if the given object has equivalent
       * property values, else `false`.
       *
       * **Note:** The created function is equivalent to `_.isMatch` with `source`
       * partially applied.
       *
       * Partial comparisons will match empty array and empty object `source`
       * values against any array or object value, respectively. See `_.isEqual`
       * for a list of supported value comparisons.
       *
       * **Note:** Multiple values can be checked by combining several matchers
       * using `_.overSome`
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Util
       * @param {Object} source The object of property values to match.
       * @returns {Function} Returns the new spec function.
       * @example
       *
       * var objects = [
       *   { 'a': 1, 'b': 2, 'c': 3 },
       *   { 'a': 4, 'b': 5, 'c': 6 }
       * ];
       *
       * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));
       * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
       *
       * // Checking for several possible values
       * _.filter(objects, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })]));
       * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]
       */
      function matches(source) {
        return baseMatches(baseClone(source, CLONE_DEEP_FLAG));
      }
  
      /**
       * Creates a function that performs a partial deep comparison between the
       * value at `path` of a given object to `srcValue`, returning `true` if the
       * object value is equivalent, else `false`.
       *
       * **Note:** Partial comparisons will match empty array and empty object
       * `srcValue` values against any array or object value, respectively. See
       * `_.isEqual` for a list of supported value comparisons.
       *
       * **Note:** Multiple values can be checked by combining several matchers
       * using `_.overSome`
       *
       * @static
       * @memberOf _
       * @since 3.2.0
       * @category Util
       * @param {Array|string} path The path of the property to get.
       * @param {*} srcValue The value to match.
       * @returns {Function} Returns the new spec function.
       * @example
       *
       * var objects = [
       *   { 'a': 1, 'b': 2, 'c': 3 },
       *   { 'a': 4, 'b': 5, 'c': 6 }
       * ];
       *
       * _.find(objects, _.matchesProperty('a', 4));
       * // => { 'a': 4, 'b': 5, 'c': 6 }
       *
       * // Checking for several possible values
       * _.filter(objects, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)]));
       * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]
       */
      function matchesProperty(path, srcValue) {
        return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));
      }
  
      /**
       * Creates a function that invokes the method at `path` of a given object.
       * Any additional arguments are provided to the invoked method.
       *
       * @static
       * @memberOf _
       * @since 3.7.0
       * @category Util
       * @param {Array|string} path The path of the method to invoke.
       * @param {...*} [args] The arguments to invoke the method with.
       * @returns {Function} Returns the new invoker function.
       * @example
       *
       * var objects = [
       *   { 'a': { 'b': _.constant(2) } },
       *   { 'a': { 'b': _.constant(1) } }
       * ];
       *
       * _.map(objects, _.method('a.b'));
       * // => [2, 1]
       *
       * _.map(objects, _.method(['a', 'b']));
       * // => [2, 1]
       */
      var method = baseRest(function(path, args) {
        return function(object) {
          return baseInvoke(object, path, args);
        };
      });
  
      /**
       * The opposite of `_.method`; this method creates a function that invokes
       * the method at a given path of `object`. Any additional arguments are
       * provided to the invoked method.
       *
       * @static
       * @memberOf _
       * @since 3.7.0
       * @category Util
       * @param {Object} object The object to query.
       * @param {...*} [args] The arguments to invoke the method with.
       * @returns {Function} Returns the new invoker function.
       * @example
       *
       * var array = _.times(3, _.constant),
       *     object = { 'a': array, 'b': array, 'c': array };
       *
       * _.map(['a[2]', 'c[0]'], _.methodOf(object));
       * // => [2, 0]
       *
       * _.map([['a', '2'], ['c', '0']], _.methodOf(object));
       * // => [2, 0]
       */
      var methodOf = baseRest(function(object, args) {
        return function(path) {
          return baseInvoke(object, path, args);
        };
      });
  
      /**
       * Adds all own enumerable string keyed function properties of a source
       * object to the destination object. If `object` is a function, then methods
       * are added to its prototype as well.
       *
       * **Note:** Use `_.runInContext` to create a pristine `lodash` function to
       * avoid conflicts caused by modifying the original.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Util
       * @param {Function|Object} [object=lodash] The destination object.
       * @param {Object} source The object of functions to add.
       * @param {Object} [options={}] The options object.
       * @param {boolean} [options.chain=true] Specify whether mixins are chainable.
       * @returns {Function|Object} Returns `object`.
       * @example
       *
       * function vowels(string) {
       *   return _.filter(string, function(v) {
       *     return /[aeiou]/i.test(v);
       *   });
       * }
       *
       * _.mixin({ 'vowels': vowels });
       * _.vowels('fred');
       * // => ['e']
       *
       * _('fred').vowels().value();
       * // => ['e']
       *
       * _.mixin({ 'vowels': vowels }, { 'chain': false });
       * _('fred').vowels();
       * // => ['e']
       */
      function mixin(object, source, options) {
        var props = keys(source),
            methodNames = baseFunctions(source, props);
  
        if (options == null &&
            !(isObject(source) && (methodNames.length || !props.length))) {
          options = source;
          source = object;
          object = this;
          methodNames = baseFunctions(source, keys(source));
        }
        var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
            isFunc = isFunction(object);
  
        arrayEach(methodNames, function(methodName) {
          var func = source[methodName];
          object[methodName] = func;
          if (isFunc) {
            object.prototype[methodName] = function() {
              var chainAll = this.__chain__;
              if (chain || chainAll) {
                var result = object(this.__wrapped__),
                    actions = result.__actions__ = copyArray(this.__actions__);
  
                actions.push({ 'func': func, 'args': arguments, 'thisArg': object });
                result.__chain__ = chainAll;
                return result;
              }
              return func.apply(object, arrayPush([this.value()], arguments));
            };
          }
        });
  
        return object;
      }
  
      /**
       * Reverts the `_` variable to its previous value and returns a reference to
       * the `lodash` function.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Util
       * @returns {Function} Returns the `lodash` function.
       * @example
       *
       * var lodash = _.noConflict();
       */
      function noConflict() {
        if (root._ === this) {
          root._ = oldDash;
        }
        return this;
      }
  
      /**
       * This method returns `undefined`.
       *
       * @static
       * @memberOf _
       * @since 2.3.0
       * @category Util
       * @example
       *
       * _.times(2, _.noop);
       * // => [undefined, undefined]
       */
      function noop() {
        // No operation performed.
      }
  
      /**
       * Creates a function that gets the argument at index `n`. If `n` is negative,
       * the nth argument from the end is returned.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Util
       * @param {number} [n=0] The index of the argument to return.
       * @returns {Function} Returns the new pass-thru function.
       * @example
       *
       * var func = _.nthArg(1);
       * func('a', 'b', 'c', 'd');
       * // => 'b'
       *
       * var func = _.nthArg(-2);
       * func('a', 'b', 'c', 'd');
       * // => 'c'
       */
      function nthArg(n) {
        n = toInteger(n);
        return baseRest(function(args) {
          return baseNth(args, n);
        });
      }
  
      /**
       * Creates a function that invokes `iteratees` with the arguments it receives
       * and returns their results.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Util
       * @param {...(Function|Function[])} [iteratees=[_.identity]]
       *  The iteratees to invoke.
       * @returns {Function} Returns the new function.
       * @example
       *
       * var func = _.over([Math.max, Math.min]);
       *
       * func(1, 2, 3, 4);
       * // => [4, 1]
       */
      var over = createOver(arrayMap);
  
      /**
       * Creates a function that checks if **all** of the `predicates` return
       * truthy when invoked with the arguments it receives.
       *
       * Following shorthands are possible for providing predicates.
       * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
       * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Util
       * @param {...(Function|Function[])} [predicates=[_.identity]]
       *  The predicates to check.
       * @returns {Function} Returns the new function.
       * @example
       *
       * var func = _.overEvery([Boolean, isFinite]);
       *
       * func('1');
       * // => true
       *
       * func(null);
       * // => false
       *
       * func(NaN);
       * // => false
       */
      var overEvery = createOver(arrayEvery);
  
      /**
       * Creates a function that checks if **any** of the `predicates` return
       * truthy when invoked with the arguments it receives.
       *
       * Following shorthands are possible for providing predicates.
       * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
       * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Util
       * @param {...(Function|Function[])} [predicates=[_.identity]]
       *  The predicates to check.
       * @returns {Function} Returns the new function.
       * @example
       *
       * var func = _.overSome([Boolean, isFinite]);
       *
       * func('1');
       * // => true
       *
       * func(null);
       * // => true
       *
       * func(NaN);
       * // => false
       *
       * var matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }])
       * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]])
       */
      var overSome = createOver(arraySome);
  
      /**
       * Creates a function that returns the value at `path` of a given object.
       *
       * @static
       * @memberOf _
       * @since 2.4.0
       * @category Util
       * @param {Array|string} path The path of the property to get.
       * @returns {Function} Returns the new accessor function.
       * @example
       *
       * var objects = [
       *   { 'a': { 'b': 2 } },
       *   { 'a': { 'b': 1 } }
       * ];
       *
       * _.map(objects, _.property('a.b'));
       * // => [2, 1]
       *
       * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
       * // => [1, 2]
       */
      function property(path) {
        return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
      }
  
      /**
       * The opposite of `_.property`; this method creates a function that returns
       * the value at a given path of `object`.
       *
       * @static
       * @memberOf _
       * @since 3.0.0
       * @category Util
       * @param {Object} object The object to query.
       * @returns {Function} Returns the new accessor function.
       * @example
       *
       * var array = [0, 1, 2],
       *     object = { 'a': array, 'b': array, 'c': array };
       *
       * _.map(['a[2]', 'c[0]'], _.propertyOf(object));
       * // => [2, 0]
       *
       * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));
       * // => [2, 0]
       */
      function propertyOf(object) {
        return function(path) {
          return object == null ? undefined : baseGet(object, path);
        };
      }
  
      /**
       * Creates an array of numbers (positive and/or negative) progressing from
       * `start` up to, but not including, `end`. A step of `-1` is used if a negative
       * `start` is specified without an `end` or `step`. If `end` is not specified,
       * it's set to `start` with `start` then set to `0`.
       *
       * **Note:** JavaScript follows the IEEE-754 standard for resolving
       * floating-point values which can produce unexpected results.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Util
       * @param {number} [start=0] The start of the range.
       * @param {number} end The end of the range.
       * @param {number} [step=1] The value to increment or decrement by.
       * @returns {Array} Returns the range of numbers.
       * @see _.inRange, _.rangeRight
       * @example
       *
       * _.range(4);
       * // => [0, 1, 2, 3]
       *
       * _.range(-4);
       * // => [0, -1, -2, -3]
       *
       * _.range(1, 5);
       * // => [1, 2, 3, 4]
       *
       * _.range(0, 20, 5);
       * // => [0, 5, 10, 15]
       *
       * _.range(0, -4, -1);
       * // => [0, -1, -2, -3]
       *
       * _.range(1, 4, 0);
       * // => [1, 1, 1]
       *
       * _.range(0);
       * // => []
       */
      var range = createRange();
  
      /**
       * This method is like `_.range` except that it populates values in
       * descending order.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Util
       * @param {number} [start=0] The start of the range.
       * @param {number} end The end of the range.
       * @param {number} [step=1] The value to increment or decrement by.
       * @returns {Array} Returns the range of numbers.
       * @see _.inRange, _.range
       * @example
       *
       * _.rangeRight(4);
       * // => [3, 2, 1, 0]
       *
       * _.rangeRight(-4);
       * // => [-3, -2, -1, 0]
       *
       * _.rangeRight(1, 5);
       * // => [4, 3, 2, 1]
       *
       * _.rangeRight(0, 20, 5);
       * // => [15, 10, 5, 0]
       *
       * _.rangeRight(0, -4, -1);
       * // => [-3, -2, -1, 0]
       *
       * _.rangeRight(1, 4, 0);
       * // => [1, 1, 1]
       *
       * _.rangeRight(0);
       * // => []
       */
      var rangeRight = createRange(true);
  
      /**
       * This method returns a new empty array.
       *
       * @static
       * @memberOf _
       * @since 4.13.0
       * @category Util
       * @returns {Array} Returns the new empty array.
       * @example
       *
       * var arrays = _.times(2, _.stubArray);
       *
       * console.log(arrays);
       * // => [[], []]
       *
       * console.log(arrays[0] === arrays[1]);
       * // => false
       */
      function stubArray() {
        return [];
      }
  
      /**
       * This method returns `false`.
       *
       * @static
       * @memberOf _
       * @since 4.13.0
       * @category Util
       * @returns {boolean} Returns `false`.
       * @example
       *
       * _.times(2, _.stubFalse);
       * // => [false, false]
       */
      function stubFalse() {
        return false;
      }
  
      /**
       * This method returns a new empty object.
       *
       * @static
       * @memberOf _
       * @since 4.13.0
       * @category Util
       * @returns {Object} Returns the new empty object.
       * @example
       *
       * var objects = _.times(2, _.stubObject);
       *
       * console.log(objects);
       * // => [{}, {}]
       *
       * console.log(objects[0] === objects[1]);
       * // => false
       */
      function stubObject() {
        return {};
      }
  
      /**
       * This method returns an empty string.
       *
       * @static
       * @memberOf _
       * @since 4.13.0
       * @category Util
       * @returns {string} Returns the empty string.
       * @example
       *
       * _.times(2, _.stubString);
       * // => ['', '']
       */
      function stubString() {
        return '';
      }
  
      /**
       * This method returns `true`.
       *
       * @static
       * @memberOf _
       * @since 4.13.0
       * @category Util
       * @returns {boolean} Returns `true`.
       * @example
       *
       * _.times(2, _.stubTrue);
       * // => [true, true]
       */
      function stubTrue() {
        return true;
      }
  
      /**
       * Invokes the iteratee `n` times, returning an array of the results of
       * each invocation. The iteratee is invoked with one argument; (index).
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Util
       * @param {number} n The number of times to invoke `iteratee`.
       * @param {Function} [iteratee=_.identity] The function invoked per iteration.
       * @returns {Array} Returns the array of results.
       * @example
       *
       * _.times(3, String);
       * // => ['0', '1', '2']
       *
       *  _.times(4, _.constant(0));
       * // => [0, 0, 0, 0]
       */
      function times(n, iteratee) {
        n = toInteger(n);
        if (n < 1 || n > MAX_SAFE_INTEGER) {
          return [];
        }
        var index = MAX_ARRAY_LENGTH,
            length = nativeMin(n, MAX_ARRAY_LENGTH);
  
        iteratee = getIteratee(iteratee);
        n -= MAX_ARRAY_LENGTH;
  
        var result = baseTimes(length, iteratee);
        while (++index < n) {
          iteratee(index);
        }
        return result;
      }
  
      /**
       * Converts `value` to a property path array.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Util
       * @param {*} value The value to convert.
       * @returns {Array} Returns the new property path array.
       * @example
       *
       * _.toPath('a.b.c');
       * // => ['a', 'b', 'c']
       *
       * _.toPath('a[0].b.c');
       * // => ['a', '0', 'b', 'c']
       */
      function toPath(value) {
        if (isArray(value)) {
          return arrayMap(value, toKey);
        }
        return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));
      }
  
      /**
       * Generates a unique ID. If `prefix` is given, the ID is appended to it.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Util
       * @param {string} [prefix=''] The value to prefix the ID with.
       * @returns {string} Returns the unique ID.
       * @example
       *
       * _.uniqueId('contact_');
       * // => 'contact_104'
       *
       * _.uniqueId();
       * // => '105'
       */
      function uniqueId(prefix) {
        var id = ++idCounter;
        return toString(prefix) + id;
      }
  
      /*------------------------------------------------------------------------*/
  
      /**
       * Adds two numbers.
       *
       * @static
       * @memberOf _
       * @since 3.4.0
       * @category Math
       * @param {number} augend The first number in an addition.
       * @param {number} addend The second number in an addition.
       * @returns {number} Returns the total.
       * @example
       *
       * _.add(6, 4);
       * // => 10
       */
      var add = createMathOperation(function(augend, addend) {
        return augend + addend;
      }, 0);
  
      /**
       * Computes `number` rounded up to `precision`.
       *
       * @static
       * @memberOf _
       * @since 3.10.0
       * @category Math
       * @param {number} number The number to round up.
       * @param {number} [precision=0] The precision to round up to.
       * @returns {number} Returns the rounded up number.
       * @example
       *
       * _.ceil(4.006);
       * // => 5
       *
       * _.ceil(6.004, 2);
       * // => 6.01
       *
       * _.ceil(6040, -2);
       * // => 6100
       */
      var ceil = createRound('ceil');
  
      /**
       * Divide two numbers.
       *
       * @static
       * @memberOf _
       * @since 4.7.0
       * @category Math
       * @param {number} dividend The first number in a division.
       * @param {number} divisor The second number in a division.
       * @returns {number} Returns the quotient.
       * @example
       *
       * _.divide(6, 4);
       * // => 1.5
       */
      var divide = createMathOperation(function(dividend, divisor) {
        return dividend / divisor;
      }, 1);
  
      /**
       * Computes `number` rounded down to `precision`.
       *
       * @static
       * @memberOf _
       * @since 3.10.0
       * @category Math
       * @param {number} number The number to round down.
       * @param {number} [precision=0] The precision to round down to.
       * @returns {number} Returns the rounded down number.
       * @example
       *
       * _.floor(4.006);
       * // => 4
       *
       * _.floor(0.046, 2);
       * // => 0.04
       *
       * _.floor(4060, -2);
       * // => 4000
       */
      var floor = createRound('floor');
  
      /**
       * Computes the maximum value of `array`. If `array` is empty or falsey,
       * `undefined` is returned.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Math
       * @param {Array} array The array to iterate over.
       * @returns {*} Returns the maximum value.
       * @example
       *
       * _.max([4, 2, 8, 6]);
       * // => 8
       *
       * _.max([]);
       * // => undefined
       */
      function max(array) {
        return (array && array.length)
          ? baseExtremum(array, identity, baseGt)
          : undefined;
      }
  
      /**
       * This method is like `_.max` except that it accepts `iteratee` which is
       * invoked for each element in `array` to generate the criterion by which
       * the value is ranked. The iteratee is invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Math
       * @param {Array} array The array to iterate over.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {*} Returns the maximum value.
       * @example
       *
       * var objects = [{ 'n': 1 }, { 'n': 2 }];
       *
       * _.maxBy(objects, function(o) { return o.n; });
       * // => { 'n': 2 }
       *
       * // The `_.property` iteratee shorthand.
       * _.maxBy(objects, 'n');
       * // => { 'n': 2 }
       */
      function maxBy(array, iteratee) {
        return (array && array.length)
          ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)
          : undefined;
      }
  
      /**
       * Computes the mean of the values in `array`.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Math
       * @param {Array} array The array to iterate over.
       * @returns {number} Returns the mean.
       * @example
       *
       * _.mean([4, 2, 8, 6]);
       * // => 5
       */
      function mean(array) {
        return baseMean(array, identity);
      }
  
      /**
       * This method is like `_.mean` except that it accepts `iteratee` which is
       * invoked for each element in `array` to generate the value to be averaged.
       * The iteratee is invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 4.7.0
       * @category Math
       * @param {Array} array The array to iterate over.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {number} Returns the mean.
       * @example
       *
       * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
       *
       * _.meanBy(objects, function(o) { return o.n; });
       * // => 5
       *
       * // The `_.property` iteratee shorthand.
       * _.meanBy(objects, 'n');
       * // => 5
       */
      function meanBy(array, iteratee) {
        return baseMean(array, getIteratee(iteratee, 2));
      }
  
      /**
       * Computes the minimum value of `array`. If `array` is empty or falsey,
       * `undefined` is returned.
       *
       * @static
       * @since 0.1.0
       * @memberOf _
       * @category Math
       * @param {Array} array The array to iterate over.
       * @returns {*} Returns the minimum value.
       * @example
       *
       * _.min([4, 2, 8, 6]);
       * // => 2
       *
       * _.min([]);
       * // => undefined
       */
      function min(array) {
        return (array && array.length)
          ? baseExtremum(array, identity, baseLt)
          : undefined;
      }
  
      /**
       * This method is like `_.min` except that it accepts `iteratee` which is
       * invoked for each element in `array` to generate the criterion by which
       * the value is ranked. The iteratee is invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Math
       * @param {Array} array The array to iterate over.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {*} Returns the minimum value.
       * @example
       *
       * var objects = [{ 'n': 1 }, { 'n': 2 }];
       *
       * _.minBy(objects, function(o) { return o.n; });
       * // => { 'n': 1 }
       *
       * // The `_.property` iteratee shorthand.
       * _.minBy(objects, 'n');
       * // => { 'n': 1 }
       */
      function minBy(array, iteratee) {
        return (array && array.length)
          ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)
          : undefined;
      }
  
      /**
       * Multiply two numbers.
       *
       * @static
       * @memberOf _
       * @since 4.7.0
       * @category Math
       * @param {number} multiplier The first number in a multiplication.
       * @param {number} multiplicand The second number in a multiplication.
       * @returns {number} Returns the product.
       * @example
       *
       * _.multiply(6, 4);
       * // => 24
       */
      var multiply = createMathOperation(function(multiplier, multiplicand) {
        return multiplier * multiplicand;
      }, 1);
  
      /**
       * Computes `number` rounded to `precision`.
       *
       * @static
       * @memberOf _
       * @since 3.10.0
       * @category Math
       * @param {number} number The number to round.
       * @param {number} [precision=0] The precision to round to.
       * @returns {number} Returns the rounded number.
       * @example
       *
       * _.round(4.006);
       * // => 4
       *
       * _.round(4.006, 2);
       * // => 4.01
       *
       * _.round(4060, -2);
       * // => 4100
       */
      var round = createRound('round');
  
      /**
       * Subtract two numbers.
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Math
       * @param {number} minuend The first number in a subtraction.
       * @param {number} subtrahend The second number in a subtraction.
       * @returns {number} Returns the difference.
       * @example
       *
       * _.subtract(6, 4);
       * // => 2
       */
      var subtract = createMathOperation(function(minuend, subtrahend) {
        return minuend - subtrahend;
      }, 0);
  
      /**
       * Computes the sum of the values in `array`.
       *
       * @static
       * @memberOf _
       * @since 3.4.0
       * @category Math
       * @param {Array} array The array to iterate over.
       * @returns {number} Returns the sum.
       * @example
       *
       * _.sum([4, 2, 8, 6]);
       * // => 20
       */
      function sum(array) {
        return (array && array.length)
          ? baseSum(array, identity)
          : 0;
      }
  
      /**
       * This method is like `_.sum` except that it accepts `iteratee` which is
       * invoked for each element in `array` to generate the value to be summed.
       * The iteratee is invoked with one argument: (value).
       *
       * @static
       * @memberOf _
       * @since 4.0.0
       * @category Math
       * @param {Array} array The array to iterate over.
       * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
       * @returns {number} Returns the sum.
       * @example
       *
       * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
       *
       * _.sumBy(objects, function(o) { return o.n; });
       * // => 20
       *
       * // The `_.property` iteratee shorthand.
       * _.sumBy(objects, 'n');
       * // => 20
       */
      function sumBy(array, iteratee) {
        return (array && array.length)
          ? baseSum(array, getIteratee(iteratee, 2))
          : 0;
      }
  
      /*------------------------------------------------------------------------*/
  
      // Add methods that return wrapped values in chain sequences.
      lodash.after = after;
      lodash.ary = ary;
      lodash.assign = assign;
      lodash.assignIn = assignIn;
      lodash.assignInWith = assignInWith;
      lodash.assignWith = assignWith;
      lodash.at = at;
      lodash.before = before;
      lodash.bind = bind;
      lodash.bindAll = bindAll;
      lodash.bindKey = bindKey;
      lodash.castArray = castArray;
      lodash.chain = chain;
      lodash.chunk = chunk;
      lodash.compact = compact;
      lodash.concat = concat;
      lodash.cond = cond;
      lodash.conforms = conforms;
      lodash.constant = constant;
      lodash.countBy = countBy;
      lodash.create = create;
      lodash.curry = curry;
      lodash.curryRight = curryRight;
      lodash.debounce = debounce;
      lodash.defaults = defaults;
      lodash.defaultsDeep = defaultsDeep;
      lodash.defer = defer;
      lodash.delay = delay;
      lodash.difference = difference;
      lodash.differenceBy = differenceBy;
      lodash.differenceWith = differenceWith;
      lodash.drop = drop;
      lodash.dropRight = dropRight;
      lodash.dropRightWhile = dropRightWhile;
      lodash.dropWhile = dropWhile;
      lodash.fill = fill;
      lodash.filter = filter;
      lodash.flatMap = flatMap;
      lodash.flatMapDeep = flatMapDeep;
      lodash.flatMapDepth = flatMapDepth;
      lodash.flatten = flatten;
      lodash.flattenDeep = flattenDeep;
      lodash.flattenDepth = flattenDepth;
      lodash.flip = flip;
      lodash.flow = flow;
      lodash.flowRight = flowRight;
      lodash.fromPairs = fromPairs;
      lodash.functions = functions;
      lodash.functionsIn = functionsIn;
      lodash.groupBy = groupBy;
      lodash.initial = initial;
      lodash.intersection = intersection;
      lodash.intersectionBy = intersectionBy;
      lodash.intersectionWith = intersectionWith;
      lodash.invert = invert;
      lodash.invertBy = invertBy;
      lodash.invokeMap = invokeMap;
      lodash.iteratee = iteratee;
      lodash.keyBy = keyBy;
      lodash.keys = keys;
      lodash.keysIn = keysIn;
      lodash.map = map;
      lodash.mapKeys = mapKeys;
      lodash.mapValues = mapValues;
      lodash.matches = matches;
      lodash.matchesProperty = matchesProperty;
      lodash.memoize = memoize;
      lodash.merge = merge;
      lodash.mergeWith = mergeWith;
      lodash.method = method;
      lodash.methodOf = methodOf;
      lodash.mixin = mixin;
      lodash.negate = negate;
      lodash.nthArg = nthArg;
      lodash.omit = omit;
      lodash.omitBy = omitBy;
      lodash.once = once;
      lodash.orderBy = orderBy;
      lodash.over = over;
      lodash.overArgs = overArgs;
      lodash.overEvery = overEvery;
      lodash.overSome = overSome;
      lodash.partial = partial;
      lodash.partialRight = partialRight;
      lodash.partition = partition;
      lodash.pick = pick;
      lodash.pickBy = pickBy;
      lodash.property = property;
      lodash.propertyOf = propertyOf;
      lodash.pull = pull;
      lodash.pullAll = pullAll;
      lodash.pullAllBy = pullAllBy;
      lodash.pullAllWith = pullAllWith;
      lodash.pullAt = pullAt;
      lodash.range = range;
      lodash.rangeRight = rangeRight;
      lodash.rearg = rearg;
      lodash.reject = reject;
      lodash.remove = remove;
      lodash.rest = rest;
      lodash.reverse = reverse;
      lodash.sampleSize = sampleSize;
      lodash.set = set;
      lodash.setWith = setWith;
      lodash.shuffle = shuffle;
      lodash.slice = slice;
      lodash.sortBy = sortBy;
      lodash.sortedUniq = sortedUniq;
      lodash.sortedUniqBy = sortedUniqBy;
      lodash.split = split;
      lodash.spread = spread;
      lodash.tail = tail;
      lodash.take = take;
      lodash.takeRight = takeRight;
      lodash.takeRightWhile = takeRightWhile;
      lodash.takeWhile = takeWhile;
      lodash.tap = tap;
      lodash.throttle = throttle;
      lodash.thru = thru;
      lodash.toArray = toArray;
      lodash.toPairs = toPairs;
      lodash.toPairsIn = toPairsIn;
      lodash.toPath = toPath;
      lodash.toPlainObject = toPlainObject;
      lodash.transform = transform;
      lodash.unary = unary;
      lodash.union = union;
      lodash.unionBy = unionBy;
      lodash.unionWith = unionWith;
      lodash.uniq = uniq;
      lodash.uniqBy = uniqBy;
      lodash.uniqWith = uniqWith;
      lodash.unset = unset;
      lodash.unzip = unzip;
      lodash.unzipWith = unzipWith;
      lodash.update = update;
      lodash.updateWith = updateWith;
      lodash.values = values;
      lodash.valuesIn = valuesIn;
      lodash.without = without;
      lodash.words = words;
      lodash.wrap = wrap;
      lodash.xor = xor;
      lodash.xorBy = xorBy;
      lodash.xorWith = xorWith;
      lodash.zip = zip;
      lodash.zipObject = zipObject;
      lodash.zipObjectDeep = zipObjectDeep;
      lodash.zipWith = zipWith;
  
      // Add aliases.
      lodash.entries = toPairs;
      lodash.entriesIn = toPairsIn;
      lodash.extend = assignIn;
      lodash.extendWith = assignInWith;
  
      // Add methods to `lodash.prototype`.
      mixin(lodash, lodash);
  
      /*------------------------------------------------------------------------*/
  
      // Add methods that return unwrapped values in chain sequences.
      lodash.add = add;
      lodash.attempt = attempt;
      lodash.camelCase = camelCase;
      lodash.capitalize = capitalize;
      lodash.ceil = ceil;
      lodash.clamp = clamp;
      lodash.clone = clone;
      lodash.cloneDeep = cloneDeep;
      lodash.cloneDeepWith = cloneDeepWith;
      lodash.cloneWith = cloneWith;
      lodash.conformsTo = conformsTo;
      lodash.deburr = deburr;
      lodash.defaultTo = defaultTo;
      lodash.divide = divide;
      lodash.endsWith = endsWith;
      lodash.eq = eq;
      lodash.escape = escape;
      lodash.escapeRegExp = escapeRegExp;
      lodash.every = every;
      lodash.find = find;
      lodash.findIndex = findIndex;
      lodash.findKey = findKey;
      lodash.findLast = findLast;
      lodash.findLastIndex = findLastIndex;
      lodash.findLastKey = findLastKey;
      lodash.floor = floor;
      lodash.forEach = forEach;
      lodash.forEachRight = forEachRight;
      lodash.forIn = forIn;
      lodash.forInRight = forInRight;
      lodash.forOwn = forOwn;
      lodash.forOwnRight = forOwnRight;
      lodash.get = get;
      lodash.gt = gt;
      lodash.gte = gte;
      lodash.has = has;
      lodash.hasIn = hasIn;
      lodash.head = head;
      lodash.identity = identity;
      lodash.includes = includes;
      lodash.indexOf = indexOf;
      lodash.inRange = inRange;
      lodash.invoke = invoke;
      lodash.isArguments = isArguments;
      lodash.isArray = isArray;
      lodash.isArrayBuffer = isArrayBuffer;
      lodash.isArrayLike = isArrayLike;
      lodash.isArrayLikeObject = isArrayLikeObject;
      lodash.isBoolean = isBoolean;
      lodash.isBuffer = isBuffer;
      lodash.isDate = isDate;
      lodash.isElement = isElement;
      lodash.isEmpty = isEmpty;
      lodash.isEqual = isEqual;
      lodash.isEqualWith = isEqualWith;
      lodash.isError = isError;
      lodash.isFinite = isFinite;
      lodash.isFunction = isFunction;
      lodash.isInteger = isInteger;
      lodash.isLength = isLength;
      lodash.isMap = isMap;
      lodash.isMatch = isMatch;
      lodash.isMatchWith = isMatchWith;
      lodash.isNaN = isNaN;
      lodash.isNative = isNative;
      lodash.isNil = isNil;
      lodash.isNull = isNull;
      lodash.isNumber = isNumber;
      lodash.isObject = isObject;
      lodash.isObjectLike = isObjectLike;
      lodash.isPlainObject = isPlainObject;
      lodash.isRegExp = isRegExp;
      lodash.isSafeInteger = isSafeInteger;
      lodash.isSet = isSet;
      lodash.isString = isString;
      lodash.isSymbol = isSymbol;
      lodash.isTypedArray = isTypedArray;
      lodash.isUndefined = isUndefined;
      lodash.isWeakMap = isWeakMap;
      lodash.isWeakSet = isWeakSet;
      lodash.join = join;
      lodash.kebabCase = kebabCase;
      lodash.last = last;
      lodash.lastIndexOf = lastIndexOf;
      lodash.lowerCase = lowerCase;
      lodash.lowerFirst = lowerFirst;
      lodash.lt = lt;
      lodash.lte = lte;
      lodash.max = max;
      lodash.maxBy = maxBy;
      lodash.mean = mean;
      lodash.meanBy = meanBy;
      lodash.min = min;
      lodash.minBy = minBy;
      lodash.stubArray = stubArray;
      lodash.stubFalse = stubFalse;
      lodash.stubObject = stubObject;
      lodash.stubString = stubString;
      lodash.stubTrue = stubTrue;
      lodash.multiply = multiply;
      lodash.nth = nth;
      lodash.noConflict = noConflict;
      lodash.noop = noop;
      lodash.now = now;
      lodash.pad = pad;
      lodash.padEnd = padEnd;
      lodash.padStart = padStart;
      lodash.parseInt = parseInt;
      lodash.random = random;
      lodash.reduce = reduce;
      lodash.reduceRight = reduceRight;
      lodash.repeat = repeat;
      lodash.replace = replace;
      lodash.result = result;
      lodash.round = round;
      lodash.runInContext = runInContext;
      lodash.sample = sample;
      lodash.size = size;
      lodash.snakeCase = snakeCase;
      lodash.some = some;
      lodash.sortedIndex = sortedIndex;
      lodash.sortedIndexBy = sortedIndexBy;
      lodash.sortedIndexOf = sortedIndexOf;
      lodash.sortedLastIndex = sortedLastIndex;
      lodash.sortedLastIndexBy = sortedLastIndexBy;
      lodash.sortedLastIndexOf = sortedLastIndexOf;
      lodash.startCase = startCase;
      lodash.startsWith = startsWith;
      lodash.subtract = subtract;
      lodash.sum = sum;
      lodash.sumBy = sumBy;
      lodash.template = template;
      lodash.times = times;
      lodash.toFinite = toFinite;
      lodash.toInteger = toInteger;
      lodash.toLength = toLength;
      lodash.toLower = toLower;
      lodash.toNumber = toNumber;
      lodash.toSafeInteger = toSafeInteger;
      lodash.toString = toString;
      lodash.toUpper = toUpper;
      lodash.trim = trim;
      lodash.trimEnd = trimEnd;
      lodash.trimStart = trimStart;
      lodash.truncate = truncate;
      lodash.unescape = unescape;
      lodash.uniqueId = uniqueId;
      lodash.upperCase = upperCase;
      lodash.upperFirst = upperFirst;
  
      // Add aliases.
      lodash.each = forEach;
      lodash.eachRight = forEachRight;
      lodash.first = head;
  
      mixin(lodash, (function() {
        var source = {};
        baseForOwn(lodash, function(func, methodName) {
          if (!hasOwnProperty.call(lodash.prototype, methodName)) {
            source[methodName] = func;
          }
        });
        return source;
      }()), { 'chain': false });
  
      /*------------------------------------------------------------------------*/
  
      /**
       * The semantic version number.
       *
       * @static
       * @memberOf _
       * @type {string}
       */
      lodash.VERSION = VERSION;
  
      // Assign default placeholders.
      arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {
        lodash[methodName].placeholder = lodash;
      });
  
      // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
      arrayEach(['drop', 'take'], function(methodName, index) {
        LazyWrapper.prototype[methodName] = function(n) {
          n = n === undefined ? 1 : nativeMax(toInteger(n), 0);
  
          var result = (this.__filtered__ && !index)
            ? new LazyWrapper(this)
            : this.clone();
  
          if (result.__filtered__) {
            result.__takeCount__ = nativeMin(n, result.__takeCount__);
          } else {
            result.__views__.push({
              'size': nativeMin(n, MAX_ARRAY_LENGTH),
              'type': methodName + (result.__dir__ < 0 ? 'Right' : '')
            });
          }
          return result;
        };
  
        LazyWrapper.prototype[methodName + 'Right'] = function(n) {
          return this.reverse()[methodName](n).reverse();
        };
      });
  
      // Add `LazyWrapper` methods that accept an `iteratee` value.
      arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {
        var type = index + 1,
            isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;
  
        LazyWrapper.prototype[methodName] = function(iteratee) {
          var result = this.clone();
          result.__iteratees__.push({
            'iteratee': getIteratee(iteratee, 3),
            'type': type
          });
          result.__filtered__ = result.__filtered__ || isFilter;
          return result;
        };
      });
  
      // Add `LazyWrapper` methods for `_.head` and `_.last`.
      arrayEach(['head', 'last'], function(methodName, index) {
        var takeName = 'take' + (index ? 'Right' : '');
  
        LazyWrapper.prototype[methodName] = function() {
          return this[takeName](1).value()[0];
        };
      });
  
      // Add `LazyWrapper` methods for `_.initial` and `_.tail`.
      arrayEach(['initial', 'tail'], function(methodName, index) {
        var dropName = 'drop' + (index ? '' : 'Right');
  
        LazyWrapper.prototype[methodName] = function() {
          return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);
        };
      });
  
      LazyWrapper.prototype.compact = function() {
        return this.filter(identity);
      };
  
      LazyWrapper.prototype.find = function(predicate) {
        return this.filter(predicate).head();
      };
  
      LazyWrapper.prototype.findLast = function(predicate) {
        return this.reverse().find(predicate);
      };
  
      LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {
        if (typeof path == 'function') {
          return new LazyWrapper(this);
        }
        return this.map(function(value) {
          return baseInvoke(value, path, args);
        });
      });
  
      LazyWrapper.prototype.reject = function(predicate) {
        return this.filter(negate(getIteratee(predicate)));
      };
  
      LazyWrapper.prototype.slice = function(start, end) {
        start = toInteger(start);
  
        var result = this;
        if (result.__filtered__ && (start > 0 || end < 0)) {
          return new LazyWrapper(result);
        }
        if (start < 0) {
          result = result.takeRight(-start);
        } else if (start) {
          result = result.drop(start);
        }
        if (end !== undefined) {
          end = toInteger(end);
          result = end < 0 ? result.dropRight(-end) : result.take(end - start);
        }
        return result;
      };
  
      LazyWrapper.prototype.takeRightWhile = function(predicate) {
        return this.reverse().takeWhile(predicate).reverse();
      };
  
      LazyWrapper.prototype.toArray = function() {
        return this.take(MAX_ARRAY_LENGTH);
      };
  
      // Add `LazyWrapper` methods to `lodash.prototype`.
      baseForOwn(LazyWrapper.prototype, function(func, methodName) {
        var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),
            isTaker = /^(?:head|last)$/.test(methodName),
            lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],
            retUnwrapped = isTaker || /^find/.test(methodName);
  
        if (!lodashFunc) {
          return;
        }
        lodash.prototype[methodName] = function() {
          var value = this.__wrapped__,
              args = isTaker ? [1] : arguments,
              isLazy = value instanceof LazyWrapper,
              iteratee = args[0],
              useLazy = isLazy || isArray(value);
  
          var interceptor = function(value) {
            var result = lodashFunc.apply(lodash, arrayPush([value], args));
            return (isTaker && chainAll) ? result[0] : result;
          };
  
          if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {
            // Avoid lazy use if the iteratee has a "length" value other than `1`.
            isLazy = useLazy = false;
          }
          var chainAll = this.__chain__,
              isHybrid = !!this.__actions__.length,
              isUnwrapped = retUnwrapped && !chainAll,
              onlyLazy = isLazy && !isHybrid;
  
          if (!retUnwrapped && useLazy) {
            value = onlyLazy ? value : new LazyWrapper(this);
            var result = func.apply(value, args);
            result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined });
            return new LodashWrapper(result, chainAll);
          }
          if (isUnwrapped && onlyLazy) {
            return func.apply(this, args);
          }
          result = this.thru(interceptor);
          return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;
        };
      });
  
      // Add `Array` methods to `lodash.prototype`.
      arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
        var func = arrayProto[methodName],
            chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
            retUnwrapped = /^(?:pop|shift)$/.test(methodName);
  
        lodash.prototype[methodName] = function() {
          var args = arguments;
          if (retUnwrapped && !this.__chain__) {
            var value = this.value();
            return func.apply(isArray(value) ? value : [], args);
          }
          return this[chainName](function(value) {
            return func.apply(isArray(value) ? value : [], args);
          });
        };
      });
  
      // Map minified method names to their real names.
      baseForOwn(LazyWrapper.prototype, function(func, methodName) {
        var lodashFunc = lodash[methodName];
        if (lodashFunc) {
          var key = lodashFunc.name + '';
          if (!hasOwnProperty.call(realNames, key)) {
            realNames[key] = [];
          }
          realNames[key].push({ 'name': methodName, 'func': lodashFunc });
        }
      });
  
      realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{
        'name': 'wrapper',
        'func': undefined
      }];
  
      // Add methods to `LazyWrapper`.
      LazyWrapper.prototype.clone = lazyClone;
      LazyWrapper.prototype.reverse = lazyReverse;
      LazyWrapper.prototype.value = lazyValue;
  
      // Add chain sequence methods to the `lodash` wrapper.
      lodash.prototype.at = wrapperAt;
      lodash.prototype.chain = wrapperChain;
      lodash.prototype.commit = wrapperCommit;
      lodash.prototype.next = wrapperNext;
      lodash.prototype.plant = wrapperPlant;
      lodash.prototype.reverse = wrapperReverse;
      lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;
  
      // Add lazy aliases.
      lodash.prototype.first = lodash.prototype.head;
  
      if (symIterator) {
        lodash.prototype[symIterator] = wrapperToIterator;
      }
      return lodash;
    });
  
    /*--------------------------------------------------------------------------*/
  
    // Export lodash.
    var _ = runInContext();
  
    // Some AMD build optimizers, like r.js, check for condition patterns like:
    if (true) {
      // Expose Lodash on the global object to prevent errors when Lodash is
      // loaded by a script tag in the presence of an AMD loader.
      // See http://requirejs.org/docs/errors.html#mismatch for more details.
      // Use `_.noConflict` to remove Lodash from the global object.
      root._ = _;
  
      // Define as an anonymous module so, through path mapping, it can be
      // referenced as the "underscore" module.
      !(__WEBPACK_AMD_DEFINE_RESULT__ = (function() {
        return _;
      }).call(exports, __webpack_require__, exports, module),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    }
    // Check for `exports` after `define` in case a build optimizer adds it.
    else {}
  }.call(this));
  
  /* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ "./node_modules/webpack/buildin/global.js"), __webpack_require__(/*! ./../webpack/buildin/module.js */ "./node_modules/webpack/buildin/module.js")(module)))
  
  /***/ }),
  
  /***/ "./node_modules/webpack/buildin/global.js":
  /*!***********************************!*\
    !*** (webpack)/buildin/global.js ***!
    \***********************************/
  /*! no static exports found */
  /***/ (function(module, exports) {
  
  var g;
  
  // This works in non-strict mode
  g = (function() {
  	return this;
  })();
  
  try {
  	// This works if eval is allowed (see CSP)
  	g = g || new Function("return this")();
  } catch (e) {
  	// This works if the window reference is available
  	if (typeof window === "object") g = window;
  }
  
  // g can still be undefined, but nothing to do about it...
  // We return undefined, instead of nothing here, so it's
  // easier to handle this case. if(!global) { ...}
  
  module.exports = g;
  
  
  /***/ }),
  
  /***/ "./node_modules/webpack/buildin/module.js":
  /*!***********************************!*\
    !*** (webpack)/buildin/module.js ***!
    \***********************************/
  /*! no static exports found */
  /***/ (function(module, exports) {
  
  module.exports = function(module) {
  	if (!module.webpackPolyfill) {
  		module.deprecate = function() {};
  		module.paths = [];
  		// module.parent = undefined by default
  		if (!module.children) module.children = [];
  		Object.defineProperty(module, "loaded", {
  			enumerable: true,
  			get: function() {
  				return module.l;
  			}
  		});
  		Object.defineProperty(module, "id", {
  			enumerable: true,
  			get: function() {
  				return module.i;
  			}
  		});
  		module.webpackPolyfill = 1;
  	}
  	return module;
  };
  
  
  /***/ }),
  
  /***/ "./resources/js/calendar.js":
  /*!**********************************!*\
    !*** ./resources/js/calendar.js ***!
    \**********************************/
  /*! no static exports found */
  /***/ (function(module, exports, __webpack_require__) {
  
  var _require = __webpack_require__(/*! lodash */ "./node_modules/lodash/lodash.js"),
      min = _require.min,
      sortedLastIndexOf = _require.sortedLastIndexOf,
      now = _require.now;
  
  window.flatpickr = __webpack_require__(/*! flatpickr */ "./node_modules/flatpickr/dist/flatpickr.js");
  window.$ = __webpack_require__(/*! jquery */ "./node_modules/jquery/dist/jquery.js");
  document.addEventListener('DOMContentLoaded', function () {
    var calendarEl = document.getElementById('calendar');
    var calendar = new FullCalendar.Calendar(calendarEl, {
      height: 700,
      initialView: 'timeGridWeek',
      slotMinTime: "08:00:00",
      slotMaxTime: "21:00:00",
      events: '/apiCalendar'
    });
    calendar.render();
  });
  document.addEventListener('DOMContentLoaded', function () {
    var calendaruserEl = document.getElementById('calendaruser');
    var calendaruser = new FullCalendar.Calendar(calendaruserEl, {
      height: 700,
      themeSystem: 'bootstrap',
      slotMinTime: "08:00:00",
      slotMaxTime: "21:00:00",
      initialView: 'timeGridWeek',
      selectable: true,
      events: '/apiCalendar'
    });
    console.log('QUIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII ', calendaruser);
    calendaruser.render();
  }); //-------------------------------------------------------------------------------------------------------------------------------------
  
  function prendiGiorno() {
    $('#selectDay').on("change", function () {
      var valoreinput = $(this).val();
      var durataServizio = $('#iputTempo').val();
      console.log(valoreinput);
      console.log(durataServizio);
      $.ajax({
        url: '/apiCalendarioData/' + valoreinput,
        method: 'GET',
        // data: {"titolo" : 'ciao'},
        success: function success(data, result) {
          console.log('result', result);
          console.log('DATA', data);
          manipolaDatiCalendario(data, durataServizio);
        },
        error: function error(err) {
          console.log('error');
        }
      });
    });
  } //--------------------------------------------------------------------------------------------------------------------------------
  
  
  function printArray(optionArray, durataServizio) {
    console.log(optionArray);
    $('#selectReservation').find('option').remove(); // ogni volta che cambio lui mi cancella tutte le vecchie option (compreso "select yourt option") => senza ogni volta che cambio giorno lui mi mostra gli orari vecchie e quelli nuovi..
  
    for (var index = 0; index < optionArray.length; index++) {
      console.log("OPZIONE ARRAY", optionArray);
      console.log('DENTRO CONTROLLO ', durataServizio);
  
      if (durataServizio == 60) // se servizio dura 1 ora
        {
          if (optionArray[index] !== "12:30" && optionArray[index] !== "13:00" && optionArray[index] !== "13:30") // se e'diverso da 12.30 13 13.30.. escludo orari della PAUSA.La Pausa e' dalle 13 alle 14 per servizi 60min
            {
              $('#selectReservation').append("'<option value=\"".concat(optionArray[index], "\">").concat(optionArray[index], "</option>'")); // qui gli dico di stampare gli orari disponibili.    
            }
        } else if (durataServizio == 30) {
        if (optionArray[index] !== "13:00" && optionArray[index] !== "13:30") // escludo orari della PAUSA per servizi 30 min, quindi posso prenotare dalle 12.30 alle 13 poi dalle 14 in poi. 
          {
            $('#selectReservation').append("'<option value=\"".concat(optionArray[index], "\">").concat(optionArray[index], "</option>'"));
          }
      }
    }
  
    $('#reservation-btn').removeClass('invisible'); // rendo visibile il bottono di prenotazione.
  } //--------------------------------------------------------------------------------------------------------------------------------
  
  
  function get60MinOption(unbookedHours, durataServizio) {
    console.log("entro nella funzione con", unbookedHours);
    var arrayOptionToPrint = []; // questo all'inizio e'vuoto e saranno le ore che mi appariranno disponibili nella gioranta selezionata
  
    for (var index = 0; index < unbookedHours.length; index++) {
      var deltaMinutes = moment(unbookedHours[index][1], "kk:mm").diff(moment(unbookedHours[index][0], "kk:mm"), 'minutes'); //faccio differenza tra il secondo e il primo appuntamento e mi calcoli i minuti. es ho buco dalle 11 alle 9. Ho 2 ore cioe' 120 minuti.
  
      console.log("Minuti ancora non prenotati: ", deltaMinutes);
  
      if (deltaMinutes >= 60) {
        for (var count = 0; count < deltaMinutes / 30 - 1; count++) {
          // ciclo per minuti /30 e tolgo uno. es 9-11 ho buco. quindi 120 minuti. lui qui mi dice 9 puoi prenotare, 9.30 puoi prenotare, 10 puoi prenotare, 10.30 grazie al -1 me lo toglie.
          var step = moment(unbookedHours[index][0], 'kk:mm').add(30 * count, 'minutes').format('kk:mm'); //aggiungo 30 minuti alla unbookedHours[index][0] che nel mio caso '9. al primo giro agigungo 0 poi 30 min poi 60 e poi 90.
  
          arrayOptionToPrint.push(step);
        }
      }
    }
  
    console.log("Orari Possibili per Prenotare Serivizi da 60 minuti: ", arrayOptionToPrint);
    printArray(arrayOptionToPrint, durataServizio);
  } //--------------------------------------------------------------------------------------------------------------------------------
  
  
  function get30MinOption(unbookedHours, durataServizio) {
    console.log("entro nella funzione con", unbookedHours);
    var arrayOptionToPrint = []; // qui funziona come nel 60 
  
    for (var index = 0; index < unbookedHours.length; index++) {
      var deltaMinutes = moment(unbookedHours[index][1], "kk:mm").diff(moment(unbookedHours[index][0], "kk:mm"), 'minutes');
      console.log("Minuti ancora non prenotati: ", deltaMinutes);
  
      if (deltaMinutes >= 30) //differenza qui che controlla 30 minuti
        {
          for (var count = 0; count < deltaMinutes / 30; count++) {
            //nel ciclo ho tolto il -1 perche'qui i 30 min mi servono
            var step = moment(unbookedHours[index][0], 'kk:mm').add(30 * count, 'minutes').format('kk:mm');
            arrayOptionToPrint.push(step);
          }
        }
    }
  
    console.log("Orari Possibili per Prenotare Serivizi da 30 minuti: ", arrayOptionToPrint);
    printArray(arrayOptionToPrint, durataServizio);
  } //--------------------------------------------------------------------------------------------------------------------------------
  
  
  function notBookedHours(data, orarioAperturaMoment, orarioChiusuraMoment, ultimoAppuntamento30Moment, ultimoAppuntamento60Moment) {
    console.log("CREA ARRAY FINE INZIO CON DATI:", data);
    var start = [];
    var end = [];
    var arrayEndStart = []; // unico array con data inizio e data fine
  
    for (var index = 0; index < data.length; index++) {
      var momentStart = moment(data[index].date_start).format("kk:mm"); // prendi dalla chiamata ajax prendo orario inizio(data-start) dell'orario trovato
  
      var momentEnd = moment(data[index].date_end).format("kk:mm"); // prendi dalla chiamata ajax prendo orario fine(data-end) dell'orario trovato        
  
      start.push(momentStart);
      end.push(momentEnd);
    } // creo due array , uno rappresenta le date inizio servizio, l'altro la data di termine servizio e li metto in ordine
  
  
    var findedStartDate = start.sort();
    var findedEndDate = end.sort();
    console.log("ARRAY ORDINATI", findedStartDate, findedEndDate);
  
    for (var k = 0; k <= data.length - 1; k++) {
      // faccio -1 sennó eco dall'array
      console.log("DATAAAAAAAAAAAAAAAAAA", data.length);
  
      if (k == 0) //se al primo giro valore trovato e'diverso dall'orario apertura (8.00)
        {
          //creo array per una sola prenotazione aggiungendo 8:00 e 19:00
          var i = findedStartDate[1] ? findedStartDate[1] : orarioChiusuraMoment; // se esiste nell'array delle date iniziali esiste almeno un elemento, dammi l'elemento sennó dammi orario chiusura.un'altra oltre la 0 me la segni come seconda prenotazione, sennó me la sostituisci con orario chiusura.
  
          console.log("vari", i);
  
          if (findedStartDate[0] !== orarioAperturaMoment) {
            var newelem = [orarioAperturaMoment, findedStartDate[0]]; //nell'array metti orario apertura e l'orario di inizio del primo appuntamento della giornata.
  
            var newelem2 = [findedEndDate[0], i];
            console.log('DIVERSO ORARIO APERTURA', newelem);
            arrayEndStart.push(newelem);
            arrayEndStart.push(newelem2);
          } else {
            var _newelem = [findedEndDate[0], i];
            console.log('UGUALE ORARIO APERTURA QUINDI ALLE 8', _newelem);
            arrayEndStart.push(_newelem);
          }
        } else if (k !== 0 && k < data.length - 1) // dopo un ciclo 
        {
          if (findedEndDate[k] !== findedStartDate[k + 1]) {
            //se la data finale dell'esimo servizio è differente dalla data iniziale del servizio successivo
            var _newelem2 = [findedEndDate[k], findedStartDate[k + 1]];
            arrayEndStart.push(_newelem2);
          }
        } else if (k == data.length - 1) // k é all'ultimo ciclo.
        {
          if (findedStartDate[k] !== ultimoAppuntamento60Moment) {
            //18:00  data inizio é diversa dallúltimo appuntamento da 60 min
            var _newelem3 = [findedEndDate[k], orarioChiusuraMoment]; //15:00 - 19:00  
  
            arrayEndStart.push(_newelem3);
          } else if (findedEndDate[k] == ultimoAppuntamento60Moment || findedEndDate[k] == ultimoAppuntamento30Moment) {
            var _newelem4 = [findedEndDate[k], orarioChiusuraMoment];
            arrayEndStart.push(_newelem4);
          }
        }
    } //fine ciclo for
  
  
    return arrayEndStart;
  } //---------------------------------------------------------------------------------------------------------------------------------
  
  
  function manipolaDatiCalendario(data, durataServizio) {
    var orarioApertura = 8;
    var orarioAperturaMoment = moment(orarioApertura, 'h').format('kk:mm');
    var orarioChiusura = 19;
    var orarioChiusuraMoment = moment(orarioChiusura, 'h').format('kk:mm');
    var ultimoAppuntamento30 = "18:30";
    var ultimoAppuntamento30Moment = moment(ultimoAppuntamento30, 'hh:mm').format('kk:mm');
    var ultimoAppuntamento60 = 18;
    var ultimoAppuntamento60Moment = moment(ultimoAppuntamento60, 'hh').format('kk:mm'); // prendo il tipo di servizio e quindi la sua durata: 
  
    var pathArray = window.location.pathname.split('/'); // prendi url pagina e la dividi ad ogni /
  
    var servizio = pathArray[2]; // prendi la posizione 2 dellárray creato, quindi prendi il numero in fondo all'URL.
    // se non c'è nessuna prenotazione---------STAMPERA' (da fare) TUTTE LE OPTION NELLA SELECT
  
    if (data.length == 0) {
      // let arrayTotalBooking=[orariAperturaMoment]; //crei array con giá dentro orario di apertura (8.00) sennó  lui parte da 8.30
      var arrayTotalBooking = [];
  
      for (var index = 0; index < (orarioChiusura - orarioApertura) * 2; index++) {
        // ciclo per le ore di aperte ( da orariochiusura - orario apertura) per ogni 30 minuti con il * 2
        var step = moment(orarioAperturaMoment, 'kk:mm').add(30 * index, 'minutes').format('kk:mm'); // aggiungo 30 minuti per ogni volta.. quindi avro step = 8.00 poi step = 8.30 step = 9.00 ecc..
  
        arrayTotalBooking.push(step); // pusho nell'array
      }
  
      console.log('MANIPOLATDI CONTROLLO ', durataServizio);
  
      if (durataServizio == 60) // se servizio dura 60 minuti => qui aggiungo tutti i servizi con duration 60 min
        {
          console.log('E DENTROOOOOOOOO A 60');
          var arrayTotalBookingSliced = arrayTotalBooking.slice(0, -1); // slice toglie i valori che gli indichi dall'array. all'inzio non tolgo nulla e alla fine faccio -1, quindi lui mi toglie 18.30.              
  
          printArray(arrayTotalBookingSliced, durataServizio);
        } else if (durataServizio == 30) {
        printArray(arrayTotalBooking, durataServizio);
      } // se c' ALMENO UNA prenotazione------------------A SECONDA DEL TIPO E DELLA DURATA DEL SERVIZIO STAMPERA LE OPTION NECESSARIE
  
    } else if (data.length >= 1) {
      var unbookedHours = notBookedHours(data, orarioAperturaMoment, orarioChiusuraMoment, ultimoAppuntamento30Moment, ultimoAppuntamento60Moment); // qui recupero le ore e mezzore libere
  
      console.log("UNBOOKED HOURS: ", unbookedHours);
  
      if (durataServizio == 60) {
        console.log('-----------------------SERVIZIO con durata 60 min-----------------------------------');
        get60MinOption(unbookedHours, durataServizio);
      } else if (durataServizio == 30) {
        console.log('-----------------------SERVIZIO con durata 30 min-----------------------------------');
        get30MinOption(unbookedHours, durataServizio);
      }
    } // FINE CICLO ELSE IF DATA LENGTH >= 1
  
  }
  
  function init() {
    prendiGiorno(); // per installare flatpicker il cdn non va.USA npm i flatpickr --save
  
    flatpickr("#selectDay", {
      dateFormat: "Y-m-d",
      defaultDate: 'today',
      "disable": [function (date) {
        return date.getDay() === 0 || date.getDay() === 6; // disable weekends
      }],
      "locale": {
        "firstDayOfWeek": 1 // set start day of week to Monday
  
      }
    });
  }
  
  $(document).ready(init);
  
  /***/ }),
  
  /***/ 1:
  /*!****************************************!*\
    !*** multi ./resources/js/calendar.js ***!
    \****************************************/
  /*! no static exports found */
  /***/ (function(module, exports, __webpack_require__) {
  
  module.exports = __webpack_require__(/*! C:\Users\Gabriele\Desktop\Boolean\BoolEstetica\resources\js\calendar.js */"./resources/js/calendar.js");
  
  
  /***/ })
  
  /******/ });