text: /**
   * @author zhixin wen <wenzhixin2010@gmail.com>
   * @version 1.5.2
   *
   * http://wenzhixin.net.cn/p/multiple-select/
   */
  
   (function (global, factory) {
     typeof exports === 'object' && typeof module !== 'undefined' ? factory(require('jquery')) :
     typeof define === 'function' && define.amd ? define(['jquery'], factory) :
     (global = global || self, factory(global.jQuery));
   }(this, function ($) { 'use strict';
  
     $ = $ && $.hasOwnProperty('default') ? $['default'] : $;
  
     function _typeof(obj) {
       if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
         _typeof = function (obj) {
           return typeof obj;
         };
       } else {
         _typeof = function (obj) {
           return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
         };
       }
  
       return _typeof(obj);
     }
  
     function _classCallCheck(instance, Constructor) {
       if (!(instance instanceof Constructor)) {
         throw new TypeError("Cannot call a class as a function");
       }
     }
  
     function _defineProperties(target, props) {
       for (var i = 0; i < props.length; i++) {
         var descriptor = props[i];
         descriptor.enumerable = descriptor.enumerable || false;
         descriptor.configurable = true;
         if ("value" in descriptor) descriptor.writable = true;
         Object.defineProperty(target, descriptor.key, descriptor);
       }
     }
  
     function _createClass(Constructor, protoProps, staticProps) {
       if (protoProps) _defineProperties(Constructor.prototype, protoProps);
       if (staticProps) _defineProperties(Constructor, staticProps);
       return Constructor;
     }
  
     function _slicedToArray(arr, i) {
       return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest();
     }
  
     function _toConsumableArray(arr) {
       return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread();
     }
  
     function _arrayWithoutHoles(arr) {
       if (Array.isArray(arr)) {
         for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];
  
         return arr2;
       }
     }
  
     function _arrayWithHoles(arr) {
       if (Array.isArray(arr)) return arr;
     }
  
     function _iterableToArray(iter) {
       if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter);
     }
  
     function _iterableToArrayLimit(arr, i) {
       if (!(Symbol.iterator in Object(arr) || Object.prototype.toString.call(arr) === "[object Arguments]")) {
         return;
       }
  
       var _arr = [];
       var _n = true;
       var _d = false;
       var _e = undefined;
  
       try {
         for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
           _arr.push(_s.value);
  
           if (i && _arr.length === i) break;
         }
       } catch (err) {
         _d = true;
         _e = err;
       } finally {
         try {
           if (!_n && _i["return"] != null) _i["return"]();
         } finally {
           if (_d) throw _e;
         }
       }
  
       return _arr;
     }
  
     function _nonIterableSpread() {
       throw new TypeError("Invalid attempt to spread non-iterable instance");
     }
  
     function _nonIterableRest() {
       throw new TypeError("Invalid attempt to destructure non-iterable instance");
     }
  
     var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
  
     function createCommonjsModule(fn, module) {
     	return module = { exports: {} }, fn(module, module.exports), module.exports;
     }
  
     var O = 'object';
     var check = function (it) {
       return it && it.Math == Math && it;
     };
  
     // https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
     var global_1 =
       // eslint-disable-next-line no-undef
       check(typeof globalThis == O && globalThis) ||
       check(typeof window == O && window) ||
       check(typeof self == O && self) ||
       check(typeof commonjsGlobal == O && commonjsGlobal) ||
       // eslint-disable-next-line no-new-func
       Function('return this')();
  
     var fails = function (exec) {
       try {
         return !!exec();
       } catch (error) {
         return true;
       }
     };
  
     // Thank's IE8 for his funny defineProperty
     var descriptors = !fails(function () {
       return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;
     });
  
     var nativePropertyIsEnumerable = {}.propertyIsEnumerable;
     var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
  
     // Nashorn ~ JDK8 bug
     var NASHORN_BUG = getOwnPropertyDescriptor && !nativePropertyIsEnumerable.call({ 1: 2 }, 1);
  
     // `Object.prototype.propertyIsEnumerable` method implementation
     // https://tc39.github.io/ecma262/#sec-object.prototype.propertyisenumerable
     var f = NASHORN_BUG ? function propertyIsEnumerable(V) {
       var descriptor = getOwnPropertyDescriptor(this, V);
       return !!descriptor && descriptor.enumerable;
     } : nativePropertyIsEnumerable;
  
     var objectPropertyIsEnumerable = {
     	f: f
     };
  
     var createPropertyDescriptor = function (bitmap, value) {
       return {
         enumerable: !(bitmap & 1),
         configurable: !(bitmap & 2),
         writable: !(bitmap & 4),
         value: value
       };
     };
  
     var toString = {}.toString;
  
     var classofRaw = function (it) {
       return toString.call(it).slice(8, -1);
     };
  
     var split = ''.split;
  
     // fallback for non-array-like ES3 and non-enumerable old V8 strings
     var indexedObject = fails(function () {
       // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346
       // eslint-disable-next-line no-prototype-builtins
       return !Object('z').propertyIsEnumerable(0);
     }) ? function (it) {
       return classofRaw(it) == 'String' ? split.call(it, '') : Object(it);
     } : Object;
  
     // `RequireObjectCoercible` abstract operation
     // https://tc39.github.io/ecma262/#sec-requireobjectcoercible
     var requireObjectCoercible = function (it) {
       if (it == undefined) throw TypeError("Can't call method on " + it);
       return it;
     };
  
     // toObject with fallback for non-array-like ES3 strings
  
  
  
     var toIndexedObject = function (it) {
       return indexedObject(requireObjectCoercible(it));
     };
  
     var isObject = function (it) {
       return typeof it === 'object' ? it !== null : typeof it === 'function';
     };
  
     // `ToPrimitive` abstract operation
     // https://tc39.github.io/ecma262/#sec-toprimitive
     // instead of the ES6 spec version, we didn't implement @@toPrimitive case
     // and the second argument - flag - preferred type is a string
     var toPrimitive = function (input, PREFERRED_STRING) {
       if (!isObject(input)) return input;
       var fn, val;
       if (PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
       if (typeof (fn = input.valueOf) == 'function' && !isObject(val = fn.call(input))) return val;
       if (!PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
       throw TypeError("Can't convert object to primitive value");
     };
  
     var hasOwnProperty = {}.hasOwnProperty;
  
     var has = function (it, key) {
       return hasOwnProperty.call(it, key);
     };
  
     var document$1 = global_1.document;
     // typeof document.createElement is 'object' in old IE
     var EXISTS = isObject(document$1) && isObject(document$1.createElement);
  
     var documentCreateElement = function (it) {
       return EXISTS ? document$1.createElement(it) : {};
     };
  
     // Thank's IE8 for his funny defineProperty
     var ie8DomDefine = !descriptors && !fails(function () {
       return Object.defineProperty(documentCreateElement('div'), 'a', {
         get: function () { return 7; }
       }).a != 7;
     });
  
     var nativeGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
  
     // `Object.getOwnPropertyDescriptor` method
     // https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor
     var f$1 = descriptors ? nativeGetOwnPropertyDescriptor : function getOwnPropertyDescriptor(O, P) {
       O = toIndexedObject(O);
       P = toPrimitive(P, true);
       if (ie8DomDefine) try {
         return nativeGetOwnPropertyDescriptor(O, P);
       } catch (error) { /* empty */ }
       if (has(O, P)) return createPropertyDescriptor(!objectPropertyIsEnumerable.f.call(O, P), O[P]);
     };
  
     var objectGetOwnPropertyDescriptor = {
     	f: f$1
     };
  
     var anObject = function (it) {
       if (!isObject(it)) {
         throw TypeError(String(it) + ' is not an object');
       } return it;
     };
  
     var nativeDefineProperty = Object.defineProperty;
  
     // `Object.defineProperty` method
     // https://tc39.github.io/ecma262/#sec-object.defineproperty
     var f$2 = descriptors ? nativeDefineProperty : function defineProperty(O, P, Attributes) {
       anObject(O);
       P = toPrimitive(P, true);
       anObject(Attributes);
       if (ie8DomDefine) try {
         return nativeDefineProperty(O, P, Attributes);
       } catch (error) { /* empty */ }
       if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');
       if ('value' in Attributes) O[P] = Attributes.value;
       return O;
     };
  
     var objectDefineProperty = {
     	f: f$2
     };
  
     var hide = descriptors ? function (object, key, value) {
       return objectDefineProperty.f(object, key, createPropertyDescriptor(1, value));
     } : function (object, key, value) {
       object[key] = value;
       return object;
     };
  
     var setGlobal = function (key, value) {
       try {
         hide(global_1, key, value);
       } catch (error) {
         global_1[key] = value;
       } return value;
     };
  
     var shared = createCommonjsModule(function (module) {
     var SHARED = '__core-js_shared__';
     var store = global_1[SHARED] || setGlobal(SHARED, {});
  
     (module.exports = function (key, value) {
       return store[key] || (store[key] = value !== undefined ? value : {});
     })('versions', []).push({
       version: '3.2.1',
       mode:  'global',
       copyright: '© 2019 Denis Pushkarev (zloirock.ru)'
     });
     });
  
     var functionToString = shared('native-function-to-string', Function.toString);
  
     var WeakMap = global_1.WeakMap;
  
     var nativeWeakMap = typeof WeakMap === 'function' && /native code/.test(functionToString.call(WeakMap));
  
     var id = 0;
     var postfix = Math.random();
  
     var uid = function (key) {
       return 'Symbol(' + String(key === undefined ? '' : key) + ')_' + (++id + postfix).toString(36);
     };
  
     var keys = shared('keys');
  
     var sharedKey = function (key) {
       return keys[key] || (keys[key] = uid(key));
     };
  
     var hiddenKeys = {};
  
     var WeakMap$1 = global_1.WeakMap;
     var set, get, has$1;
  
     var enforce = function (it) {
       return has$1(it) ? get(it) : set(it, {});
     };
  
     var getterFor = function (TYPE) {
       return function (it) {
         var state;
         if (!isObject(it) || (state = get(it)).type !== TYPE) {
           throw TypeError('Incompatible receiver, ' + TYPE + ' required');
         } return state;
       };
     };
  
     if (nativeWeakMap) {
       var store = new WeakMap$1();
       var wmget = store.get;
       var wmhas = store.has;
       var wmset = store.set;
       set = function (it, metadata) {
         wmset.call(store, it, metadata);
         return metadata;
       };
       get = function (it) {
         return wmget.call(store, it) || {};
       };
       has$1 = function (it) {
         return wmhas.call(store, it);
       };
     } else {
       var STATE = sharedKey('state');
       hiddenKeys[STATE] = true;
       set = function (it, metadata) {
         hide(it, STATE, metadata);
         return metadata;
       };
       get = function (it) {
         return has(it, STATE) ? it[STATE] : {};
       };
       has$1 = function (it) {
         return has(it, STATE);
       };
     }
  
     var internalState = {
       set: set,
       get: get,
       has: has$1,
       enforce: enforce,
       getterFor: getterFor
     };
  
     var redefine = createCommonjsModule(function (module) {
     var getInternalState = internalState.get;
     var enforceInternalState = internalState.enforce;
     var TEMPLATE = String(functionToString).split('toString');
  
     shared('inspectSource', function (it) {
       return functionToString.call(it);
     });
  
     (module.exports = function (O, key, value, options) {
       var unsafe = options ? !!options.unsafe : false;
       var simple = options ? !!options.enumerable : false;
       var noTargetGet = options ? !!options.noTargetGet : false;
       if (typeof value == 'function') {
         if (typeof key == 'string' && !has(value, 'name')) hide(value, 'name', key);
         enforceInternalState(value).source = TEMPLATE.join(typeof key == 'string' ? key : '');
       }
       if (O === global_1) {
         if (simple) O[key] = value;
         else setGlobal(key, value);
         return;
       } else if (!unsafe) {
         delete O[key];
       } else if (!noTargetGet && O[key]) {
         simple = true;
       }
       if (simple) O[key] = value;
       else hide(O, key, value);
     // add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
     })(Function.prototype, 'toString', function toString() {
       return typeof this == 'function' && getInternalState(this).source || functionToString.call(this);
     });
     });
  
     var path = global_1;
  
     var aFunction = function (variable) {
       return typeof variable == 'function' ? variable : undefined;
     };
  
     var getBuiltIn = function (namespace, method) {
       return arguments.length < 2 ? aFunction(path[namespace]) || aFunction(global_1[namespace])
         : path[namespace] && path[namespace][method] || global_1[namespace] && global_1[namespace][method];
     };
  
     var ceil = Math.ceil;
     var floor = Math.floor;
  
     // `ToInteger` abstract operation
     // https://tc39.github.io/ecma262/#sec-tointeger
     var toInteger = function (argument) {
       return isNaN(argument = +argument) ? 0 : (argument > 0 ? floor : ceil)(argument);
     };
  
     var min = Math.min;
  
     // `ToLength` abstract operation
     // https://tc39.github.io/ecma262/#sec-tolength
     var toLength = function (argument) {
       return argument > 0 ? min(toInteger(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991
     };
  
     var max = Math.max;
     var min$1 = Math.min;
  
     // Helper for a popular repeating case of the spec:
     // Let integer be ? ToInteger(index).
     // If integer < 0, let result be max((length + integer), 0); else let result be min(length, length).
     var toAbsoluteIndex = function (index, length) {
       var integer = toInteger(index);
       return integer < 0 ? max(integer + length, 0) : min$1(integer, length);
     };
  
     // `Array.prototype.{ indexOf, includes }` methods implementation
     var createMethod = function (IS_INCLUDES) {
       return function ($this, el, fromIndex) {
         var O = toIndexedObject($this);
         var length = toLength(O.length);
         var index = toAbsoluteIndex(fromIndex, length);
         var value;
         // Array#includes uses SameValueZero equality algorithm
         // eslint-disable-next-line no-self-compare
         if (IS_INCLUDES && el != el) while (length > index) {
           value = O[index++];
           // eslint-disable-next-line no-self-compare
           if (value != value) return true;
         // Array#indexOf ignores holes, Array#includes - not
         } else for (;length > index; index++) {
           if ((IS_INCLUDES || index in O) && O[index] === el) return IS_INCLUDES || index || 0;
         } return !IS_INCLUDES && -1;
       };
     };
  
     var arrayIncludes = {
       // `Array.prototype.includes` method
       // https://tc39.github.io/ecma262/#sec-array.prototype.includes
       includes: createMethod(true),
       // `Array.prototype.indexOf` method
       // https://tc39.github.io/ecma262/#sec-array.prototype.indexof
       indexOf: createMethod(false)
     };
  
     var indexOf = arrayIncludes.indexOf;
  
  
     var objectKeysInternal = function (object, names) {
       var O = toIndexedObject(object);
       var i = 0;
       var result = [];
       var key;
       for (key in O) !has(hiddenKeys, key) && has(O, key) && result.push(key);
       // Don't enum bug & hidden keys
       while (names.length > i) if (has(O, key = names[i++])) {
         ~indexOf(result, key) || result.push(key);
       }
       return result;
     };
  
     // IE8- don't enum bug keys
     var enumBugKeys = [
       'constructor',
       'hasOwnProperty',
       'isPrototypeOf',
       'propertyIsEnumerable',
       'toLocaleString',
       'toString',
       'valueOf'
     ];
  
     var hiddenKeys$1 = enumBugKeys.concat('length', 'prototype');
  
     // `Object.getOwnPropertyNames` method
     // https://tc39.github.io/ecma262/#sec-object.getownpropertynames
     var f$3 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
       return objectKeysInternal(O, hiddenKeys$1);
     };
  
     var objectGetOwnPropertyNames = {
     	f: f$3
     };
  
     var f$4 = Object.getOwnPropertySymbols;
  
     var objectGetOwnPropertySymbols = {
     	f: f$4
     };
  
     // all object keys, includes non-enumerable and symbols
     var ownKeys = getBuiltIn('Reflect', 'ownKeys') || function ownKeys(it) {
       var keys = objectGetOwnPropertyNames.f(anObject(it));
       var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
       return getOwnPropertySymbols ? keys.concat(getOwnPropertySymbols(it)) : keys;
     };
  
     var copyConstructorProperties = function (target, source) {
       var keys = ownKeys(source);
       var defineProperty = objectDefineProperty.f;
       var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
       for (var i = 0; i < keys.length; i++) {
         var key = keys[i];
         if (!has(target, key)) defineProperty(target, key, getOwnPropertyDescriptor(source, key));
       }
     };
  
     var replacement = /#|\.prototype\./;
  
     var isForced = function (feature, detection) {
       var value = data[normalize(feature)];
       return value == POLYFILL ? true
         : value == NATIVE ? false
         : typeof detection == 'function' ? fails(detection)
         : !!detection;
     };
  
     var normalize = isForced.normalize = function (string) {
       return String(string).replace(replacement, '.').toLowerCase();
     };
  
     var data = isForced.data = {};
     var NATIVE = isForced.NATIVE = 'N';
     var POLYFILL = isForced.POLYFILL = 'P';
  
     var isForced_1 = isForced;
  
     var getOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
  
  
  
  
  
  
     /*
       options.target      - name of the target object
       options.global      - target is the global object
       options.stat        - export as static methods of target
       options.proto       - export as prototype methods of target
       options.real        - real prototype method for the `pure` version
       options.forced      - export even if the native feature is available
       options.bind        - bind methods to the target, required for the `pure` version
       options.wrap        - wrap constructors to preventing global pollution, required for the `pure` version
       options.unsafe      - use the simple assignment of property instead of delete + defineProperty
       options.sham        - add a flag to not completely full polyfills
       options.enumerable  - export as enumerable property
       options.noTargetGet - prevent calling a getter on target
     */
     var _export = function (options, source) {
       var TARGET = options.target;
       var GLOBAL = options.global;
       var STATIC = options.stat;
       var FORCED, target, key, targetProperty, sourceProperty, descriptor;
       if (GLOBAL) {
         target = global_1;
       } else if (STATIC) {
         target = global_1[TARGET] || setGlobal(TARGET, {});
       } else {
         target = (global_1[TARGET] || {}).prototype;
       }
       if (target) for (key in source) {
         sourceProperty = source[key];
         if (options.noTargetGet) {
           descriptor = getOwnPropertyDescriptor$1(target, key);
           targetProperty = descriptor && descriptor.value;
         } else targetProperty = target[key];
         FORCED = isForced_1(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);
         // contained in target
         if (!FORCED && targetProperty !== undefined) {
           if (typeof sourceProperty === typeof targetProperty) continue;
           copyConstructorProperties(sourceProperty, targetProperty);
         }
         // add a flag to not completely full polyfills
         if (options.sham || (targetProperty && targetProperty.sham)) {
           hide(sourceProperty, 'sham', true);
         }
         // extend global
         redefine(target, key, sourceProperty, options);
       }
     };
  
     var nativeSymbol = !!Object.getOwnPropertySymbols && !fails(function () {
       // Chrome 38 Symbol has incorrect toString conversion
       // eslint-disable-next-line no-undef
       return !String(Symbol());
     });
  
     var Symbol$1 = global_1.Symbol;
     var store$1 = shared('wks');
  
     var wellKnownSymbol = function (name) {
       return store$1[name] || (store$1[name] = nativeSymbol && Symbol$1[name]
         || (nativeSymbol ? Symbol$1 : uid)('Symbol.' + name));
     };
  
     // `Object.keys` method
     // https://tc39.github.io/ecma262/#sec-object.keys
     var objectKeys = Object.keys || function keys(O) {
       return objectKeysInternal(O, enumBugKeys);
     };
  
     // `Object.defineProperties` method
     // https://tc39.github.io/ecma262/#sec-object.defineproperties
     var objectDefineProperties = descriptors ? Object.defineProperties : function defineProperties(O, Properties) {
       anObject(O);
       var keys = objectKeys(Properties);
       var length = keys.length;
       var index = 0;
       var key;
       while (length > index) objectDefineProperty.f(O, key = keys[index++], Properties[key]);
       return O;
     };
  
     var html = getBuiltIn('document', 'documentElement');
  
     var IE_PROTO = sharedKey('IE_PROTO');
  
     var PROTOTYPE = 'prototype';
     var Empty = function () { /* empty */ };
  
     // Create object with fake `null` prototype: use iframe Object with cleared prototype
     var createDict = function () {
       // Thrash, waste and sodomy: IE GC bug
       var iframe = documentCreateElement('iframe');
       var length = enumBugKeys.length;
       var lt = '<';
       var script = 'script';
       var gt = '>';
       var js = 'java' + script + ':';
       var iframeDocument;
       iframe.style.display = 'none';
       html.appendChild(iframe);
       iframe.src = String(js);
       iframeDocument = iframe.contentWindow.document;
       iframeDocument.open();
       iframeDocument.write(lt + script + gt + 'document.F=Object' + lt + '/' + script + gt);
       iframeDocument.close();
       createDict = iframeDocument.F;
       while (length--) delete createDict[PROTOTYPE][enumBugKeys[length]];
       return createDict();
     };
  
     // `Object.create` method
     // https://tc39.github.io/ecma262/#sec-object.create
     var objectCreate = Object.create || function create(O, Properties) {
       var result;
       if (O !== null) {
         Empty[PROTOTYPE] = anObject(O);
         result = new Empty();
         Empty[PROTOTYPE] = null;
         // add "__proto__" for Object.getPrototypeOf polyfill
         result[IE_PROTO] = O;
       } else result = createDict();
       return Properties === undefined ? result : objectDefineProperties(result, Properties);
     };
  
     hiddenKeys[IE_PROTO] = true;
  
     var UNSCOPABLES = wellKnownSymbol('unscopables');
     var ArrayPrototype = Array.prototype;
  
     // Array.prototype[@@unscopables]
     // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
     if (ArrayPrototype[UNSCOPABLES] == undefined) {
       hide(ArrayPrototype, UNSCOPABLES, objectCreate(null));
     }
  
     // add a key to Array.prototype[@@unscopables]
     var addToUnscopables = function (key) {
       ArrayPrototype[UNSCOPABLES][key] = true;
     };
  
     var $includes = arrayIncludes.includes;
  
  
     // `Array.prototype.includes` method
     // https://tc39.github.io/ecma262/#sec-array.prototype.includes
     _export({ target: 'Array', proto: true }, {
       includes: function includes(el /* , fromIndex = 0 */) {
         return $includes(this, el, arguments.length > 1 ? arguments[1] : undefined);
       }
     });
  
     // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
     addToUnscopables('includes');
  
     // `ToObject` abstract operation
     // https://tc39.github.io/ecma262/#sec-toobject
     var toObject = function (argument) {
       return Object(requireObjectCoercible(argument));
     };
  
     var nativeAssign = Object.assign;
  
     // `Object.assign` method
     // https://tc39.github.io/ecma262/#sec-object.assign
     // should work with symbols and should have deterministic property order (V8 bug)
     var objectAssign = !nativeAssign || fails(function () {
       var A = {};
       var B = {};
       // eslint-disable-next-line no-undef
       var symbol = Symbol();
       var alphabet = 'abcdefghijklmnopqrst';
       A[symbol] = 7;
       alphabet.split('').forEach(function (chr) { B[chr] = chr; });
       return nativeAssign({}, A)[symbol] != 7 || objectKeys(nativeAssign({}, B)).join('') != alphabet;
     }) ? function assign(target, source) { // eslint-disable-line no-unused-vars
       var T = toObject(target);
       var argumentsLength = arguments.length;
       var index = 1;
       var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
       var propertyIsEnumerable = objectPropertyIsEnumerable.f;
       while (argumentsLength > index) {
         var S = indexedObject(arguments[index++]);
         var keys = getOwnPropertySymbols ? objectKeys(S).concat(getOwnPropertySymbols(S)) : objectKeys(S);
         var length = keys.length;
         var j = 0;
         var key;
         while (length > j) {
           key = keys[j++];
           if (!descriptors || propertyIsEnumerable.call(S, key)) T[key] = S[key];
         }
       } return T;
     } : nativeAssign;
  
     // `Object.assign` method
     // https://tc39.github.io/ecma262/#sec-object.assign
     _export({ target: 'Object', stat: true, forced: Object.assign !== objectAssign }, {
       assign: objectAssign
     });
  
     var MATCH = wellKnownSymbol('match');
  
     // `IsRegExp` abstract operation
     // https://tc39.github.io/ecma262/#sec-isregexp
     var isRegexp = function (it) {
       var isRegExp;
       return isObject(it) && ((isRegExp = it[MATCH]) !== undefined ? !!isRegExp : classofRaw(it) == 'RegExp');
     };
  
     var notARegexp = function (it) {
       if (isRegexp(it)) {
         throw TypeError("The method doesn't accept regular expressions");
       } return it;
     };
  
     var MATCH$1 = wellKnownSymbol('match');
  
     var correctIsRegexpLogic = function (METHOD_NAME) {
       var regexp = /./;
       try {
         '/./'[METHOD_NAME](regexp);
       } catch (e) {
         try {
           regexp[MATCH$1] = false;
           return '/./'[METHOD_NAME](regexp);
         } catch (f) { /* empty */ }
       } return false;
     };
  
     // `String.prototype.includes` method
     // https://tc39.github.io/ecma262/#sec-string.prototype.includes
     _export({ target: 'String', proto: true, forced: !correctIsRegexpLogic('includes') }, {
       includes: function includes(searchString /* , position = 0 */) {
         return !!~String(requireObjectCoercible(this))
           .indexOf(notARegexp(searchString), arguments.length > 1 ? arguments[1] : undefined);
       }
     });
  
     // a string of all valid unicode whitespaces
     // eslint-disable-next-line max-len
     var whitespaces = '\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF';
  
     var whitespace = '[' + whitespaces + ']';
     var ltrim = RegExp('^' + whitespace + whitespace + '*');
     var rtrim = RegExp(whitespace + whitespace + '*$');
  
     // `String.prototype.{ trim, trimStart, trimEnd, trimLeft, trimRight }` methods implementation
     var createMethod$1 = function (TYPE) {
       return function ($this) {
         var string = String(requireObjectCoercible($this));
         if (TYPE & 1) string = string.replace(ltrim, '');
         if (TYPE & 2) string = string.replace(rtrim, '');
         return string;
       };
     };
  
     var stringTrim = {
       // `String.prototype.{ trimLeft, trimStart }` methods
       // https://tc39.github.io/ecma262/#sec-string.prototype.trimstart
       start: createMethod$1(1),
       // `String.prototype.{ trimRight, trimEnd }` methods
       // https://tc39.github.io/ecma262/#sec-string.prototype.trimend
       end: createMethod$1(2),
       // `String.prototype.trim` method
       // https://tc39.github.io/ecma262/#sec-string.prototype.trim
       trim: createMethod$1(3)
     };
  
     var non = '\u200B\u0085\u180E';
  
     // check that a method works with the correct list
     // of whitespaces and has a correct name
     var forcedStringTrimMethod = function (METHOD_NAME) {
       return fails(function () {
         return !!whitespaces[METHOD_NAME]() || non[METHOD_NAME]() != non || whitespaces[METHOD_NAME].name !== METHOD_NAME;
       });
     };
  
     var $trim = stringTrim.trim;
  
  
     // `String.prototype.trim` method
     // https://tc39.github.io/ecma262/#sec-string.prototype.trim
     _export({ target: 'String', proto: true, forced: forcedStringTrimMethod('trim') }, {
       trim: function trim() {
         return $trim(this);
       }
     });
  
     var VERSION = '1.5.2';
     var BLOCK_ROWS = 50;
     var CLUSTER_BLOCKS = 4;
     var DEFAULTS = {
       name: '',
       placeholder: '',
       data: undefined,
       locale: undefined,
       selectAll: true,
       single: undefined,
       singleRadio: false,
       multiple: false,
       hideOptgroupCheckboxes: false,
       multipleWidth: 80,
       width: undefined,
       dropWidth: undefined,
       maxHeight: 250,
       maxHeightUnit: 'px',
       position: 'bottom',
       displayValues: false,
       displayTitle: false,
       displayDelimiter: ', ',
       minimumCountSelected: 3,
       ellipsis: false,
       isOpen: false,
       keepOpen: false,
       openOnHover: false,
       container: null,
       filter: false,
       filterGroup: false,
       filterPlaceholder: '',
       filterAcceptOnEnter: false,
       filterByDataLength: undefined,
       customFilter: function customFilter(label, text) {
         // originalLabel, originalText
         return label.includes(text);
       },
       showClear: false,
       animate: undefined,
       styler: function styler() {
         return false;
       },
       textTemplate: function textTemplate($elm) {
         return $elm[0].innerHTML.trim();
       },
       labelTemplate: function labelTemplate($elm) {
         return $elm[0].getAttribute('label');
       },
       onOpen: function onOpen() {
         return false;
       },
       onClose: function onClose() {
         return false;
       },
       onCheckAll: function onCheckAll() {
         return false;
       },
       onUncheckAll: function onUncheckAll() {
         return false;
       },
       onFocus: function onFocus() {
         return false;
       },
       onBlur: function onBlur() {
         return false;
       },
       onOptgroupClick: function onOptgroupClick() {
         return false;
       },
       onClick: function onClick() {
         return false;
       },
       onFilter: function onFilter() {
         return false;
       },
       onClear: function onClear() {
         return false;
       },
       onAfterCreate: function onAfterCreate() {
         return false;
       }
     };
     var EN = {
       formatSelectAll: function formatSelectAll() {
         return '[Select all]';
       },
       formatAllSelected: function formatAllSelected() {
         return 'All selected';
       },
       formatCountSelected: function formatCountSelected(count, total) {
         return count + ' of ' + total + ' selected';
       },
       formatNoMatchesFound: function formatNoMatchesFound() {
         return 'No matches found';
       }
     };
     var METHODS = ['getOptions', 'refreshOptions', 'getSelects', 'setSelects', 'enable', 'disable', 'open', 'close', 'check', 'uncheck', 'checkAll', 'uncheckAll', 'checkInvert', 'focus', 'blur', 'refresh', 'destroy'];
     Object.assign(DEFAULTS, EN);
     var Constants = {
       VERSION: VERSION,
       BLOCK_ROWS: BLOCK_ROWS,
       CLUSTER_BLOCKS: CLUSTER_BLOCKS,
       DEFAULTS: DEFAULTS,
       METHODS: METHODS,
       LOCALES: {
         en: EN,
         'en-US': EN
       }
     };
  
     // `IsArray` abstract operation
     // https://tc39.github.io/ecma262/#sec-isarray
     var isArray = Array.isArray || function isArray(arg) {
       return classofRaw(arg) == 'Array';
     };
  
     var nativeGetOwnPropertyNames = objectGetOwnPropertyNames.f;
  
     var toString$1 = {}.toString;
  
     var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames
       ? Object.getOwnPropertyNames(window) : [];
  
     var getWindowNames = function (it) {
       try {
         return nativeGetOwnPropertyNames(it);
       } catch (error) {
         return windowNames.slice();
       }
     };
  
     // fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window
     var f$5 = function getOwnPropertyNames(it) {
       return windowNames && toString$1.call(it) == '[object Window]'
         ? getWindowNames(it)
         : nativeGetOwnPropertyNames(toIndexedObject(it));
     };
  
     var objectGetOwnPropertyNamesExternal = {
     	f: f$5
     };
  
     var f$6 = wellKnownSymbol;
  
     var wrappedWellKnownSymbol = {
     	f: f$6
     };
  
     var defineProperty = objectDefineProperty.f;
  
     var defineWellKnownSymbol = function (NAME) {
       var Symbol = path.Symbol || (path.Symbol = {});
       if (!has(Symbol, NAME)) defineProperty(Symbol, NAME, {
         value: wrappedWellKnownSymbol.f(NAME)
       });
     };
  
     var defineProperty$1 = objectDefineProperty.f;
  
  
  
     var TO_STRING_TAG = wellKnownSymbol('toStringTag');
  
     var setToStringTag = function (it, TAG, STATIC) {
       if (it && !has(it = STATIC ? it : it.prototype, TO_STRING_TAG)) {
         defineProperty$1(it, TO_STRING_TAG, { configurable: true, value: TAG });
       }
     };
  
     var aFunction$1 = function (it) {
       if (typeof it != 'function') {
         throw TypeError(String(it) + ' is not a function');
       } return it;
     };
  
     // optional / simple context binding
     var bindContext = function (fn, that, length) {
       aFunction$1(fn);
       if (that === undefined) return fn;
       switch (length) {
         case 0: return function () {
           return fn.call(that);
         };
         case 1: return function (a) {
           return fn.call(that, a);
         };
         case 2: return function (a, b) {
           return fn.call(that, a, b);
         };
         case 3: return function (a, b, c) {
           return fn.call(that, a, b, c);
         };
       }
       return function (/* ...args */) {
         return fn.apply(that, arguments);
       };
     };
  
     var SPECIES = wellKnownSymbol('species');
  
     // `ArraySpeciesCreate` abstract operation
     // https://tc39.github.io/ecma262/#sec-arrayspeciescreate
     var arraySpeciesCreate = function (originalArray, length) {
       var C;
       if (isArray(originalArray)) {
         C = originalArray.constructor;
         // cross-realm fallback
         if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;
         else if (isObject(C)) {
           C = C[SPECIES];
           if (C === null) C = undefined;
         }
       } return new (C === undefined ? Array : C)(length === 0 ? 0 : length);
     };
  
     var push = [].push;
  
     // `Array.prototype.{ forEach, map, filter, some, every, find, findIndex }` methods implementation
     var createMethod$2 = function (TYPE) {
       var IS_MAP = TYPE == 1;
       var IS_FILTER = TYPE == 2;
       var IS_SOME = TYPE == 3;
       var IS_EVERY = TYPE == 4;
       var IS_FIND_INDEX = TYPE == 6;
       var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
       return function ($this, callbackfn, that, specificCreate) {
         var O = toObject($this);
         var self = indexedObject(O);
         var boundFunction = bindContext(callbackfn, that, 3);
         var length = toLength(self.length);
         var index = 0;
         var create = specificCreate || arraySpeciesCreate;
         var target = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;
         var value, result;
         for (;length > index; index++) if (NO_HOLES || index in self) {
           value = self[index];
           result = boundFunction(value, index, O);
           if (TYPE) {
             if (IS_MAP) target[index] = result; // map
             else if (result) switch (TYPE) {
               case 3: return true;              // some
               case 5: return value;             // find
               case 6: return index;             // findIndex
               case 2: push.call(target, value); // filter
             } else if (IS_EVERY) return false;  // every
           }
         }
         return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;
       };
     };
  
     var arrayIteration = {
       // `Array.prototype.forEach` method
       // https://tc39.github.io/ecma262/#sec-array.prototype.foreach
       forEach: createMethod$2(0),
       // `Array.prototype.map` method
       // https://tc39.github.io/ecma262/#sec-array.prototype.map
       map: createMethod$2(1),
       // `Array.prototype.filter` method
       // https://tc39.github.io/ecma262/#sec-array.prototype.filter
       filter: createMethod$2(2),
       // `Array.prototype.some` method
       // https://tc39.github.io/ecma262/#sec-array.prototype.some
       some: createMethod$2(3),
       // `Array.prototype.every` method
       // https://tc39.github.io/ecma262/#sec-array.prototype.every
       every: createMethod$2(4),
       // `Array.prototype.find` method
       // https://tc39.github.io/ecma262/#sec-array.prototype.find
       find: createMethod$2(5),
       // `Array.prototype.findIndex` method
       // https://tc39.github.io/ecma262/#sec-array.prototype.findIndex
       findIndex: createMethod$2(6)
     };
  
     var $forEach = arrayIteration.forEach;
  
     var HIDDEN = sharedKey('hidden');
     var SYMBOL = 'Symbol';
     var PROTOTYPE$1 = 'prototype';
     var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');
     var setInternalState = internalState.set;
     var getInternalState = internalState.getterFor(SYMBOL);
     var ObjectPrototype = Object[PROTOTYPE$1];
     var $Symbol = global_1.Symbol;
     var JSON = global_1.JSON;
     var nativeJSONStringify = JSON && JSON.stringify;
     var nativeGetOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
     var nativeDefineProperty$1 = objectDefineProperty.f;
     var nativeGetOwnPropertyNames$1 = objectGetOwnPropertyNamesExternal.f;
     var nativePropertyIsEnumerable$1 = objectPropertyIsEnumerable.f;
     var AllSymbols = shared('symbols');
     var ObjectPrototypeSymbols = shared('op-symbols');
     var StringToSymbolRegistry = shared('string-to-symbol-registry');
     var SymbolToStringRegistry = shared('symbol-to-string-registry');
     var WellKnownSymbolsStore = shared('wks');
     var QObject = global_1.QObject;
     // Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173
     var USE_SETTER = !QObject || !QObject[PROTOTYPE$1] || !QObject[PROTOTYPE$1].findChild;
  
     // fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687
     var setSymbolDescriptor = descriptors && fails(function () {
       return objectCreate(nativeDefineProperty$1({}, 'a', {
         get: function () { return nativeDefineProperty$1(this, 'a', { value: 7 }).a; }
       })).a != 7;
     }) ? function (O, P, Attributes) {
       var ObjectPrototypeDescriptor = nativeGetOwnPropertyDescriptor$1(ObjectPrototype, P);
       if (ObjectPrototypeDescriptor) delete ObjectPrototype[P];
       nativeDefineProperty$1(O, P, Attributes);
       if (ObjectPrototypeDescriptor && O !== ObjectPrototype) {
         nativeDefineProperty$1(ObjectPrototype, P, ObjectPrototypeDescriptor);
       }
     } : nativeDefineProperty$1;
  
     var wrap = function (tag, description) {
       var symbol = AllSymbols[tag] = objectCreate($Symbol[PROTOTYPE$1]);
       setInternalState(symbol, {
         type: SYMBOL,
         tag: tag,
         description: description
       });
       if (!descriptors) symbol.description = description;
       return symbol;
     };
  
     var isSymbol = nativeSymbol && typeof $Symbol.iterator == 'symbol' ? function (it) {
       return typeof it == 'symbol';
     } : function (it) {
       return Object(it) instanceof $Symbol;
     };
  
     var $defineProperty = function defineProperty(O, P, Attributes) {
       if (O === ObjectPrototype) $defineProperty(ObjectPrototypeSymbols, P, Attributes);
       anObject(O);
       var key = toPrimitive(P, true);
       anObject(Attributes);
       if (has(AllSymbols, key)) {
         if (!Attributes.enumerable) {
           if (!has(O, HIDDEN)) nativeDefineProperty$1(O, HIDDEN, createPropertyDescriptor(1, {}));
           O[HIDDEN][key] = true;
         } else {
           if (has(O, HIDDEN) && O[HIDDEN][key]) O[HIDDEN][key] = false;
           Attributes = objectCreate(Attributes, { enumerable: createPropertyDescriptor(0, false) });
         } return setSymbolDescriptor(O, key, Attributes);
       } return nativeDefineProperty$1(O, key, Attributes);
     };
  
     var $defineProperties = function defineProperties(O, Properties) {
       anObject(O);
       var properties = toIndexedObject(Properties);
       var keys = objectKeys(properties).concat($getOwnPropertySymbols(properties));
       $forEach(keys, function (key) {
         if (!descriptors || $propertyIsEnumerable.call(properties, key)) $defineProperty(O, key, properties[key]);
       });
       return O;
     };
  
     var $create = function create(O, Properties) {
       return Properties === undefined ? objectCreate(O) : $defineProperties(objectCreate(O), Properties);
     };
  
     var $propertyIsEnumerable = function propertyIsEnumerable(V) {
       var P = toPrimitive(V, true);
       var enumerable = nativePropertyIsEnumerable$1.call(this, P);
       if (this === ObjectPrototype && has(AllSymbols, P) && !has(ObjectPrototypeSymbols, P)) return false;
       return enumerable || !has(this, P) || !has(AllSymbols, P) || has(this, HIDDEN) && this[HIDDEN][P] ? enumerable : true;
     };
  
     var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(O, P) {
       var it = toIndexedObject(O);
       var key = toPrimitive(P, true);
       if (it === ObjectPrototype && has(AllSymbols, key) && !has(ObjectPrototypeSymbols, key)) return;
       var descriptor = nativeGetOwnPropertyDescriptor$1(it, key);
       if (descriptor && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) {
         descriptor.enumerable = true;
       }
       return descriptor;
     };
  
     var $getOwnPropertyNames = function getOwnPropertyNames(O) {
       var names = nativeGetOwnPropertyNames$1(toIndexedObject(O));
       var result = [];
       $forEach(names, function (key) {
         if (!has(AllSymbols, key) && !has(hiddenKeys, key)) result.push(key);
       });
       return result;
     };
  
     var $getOwnPropertySymbols = function getOwnPropertySymbols(O) {
       var IS_OBJECT_PROTOTYPE = O === ObjectPrototype;
       var names = nativeGetOwnPropertyNames$1(IS_OBJECT_PROTOTYPE ? ObjectPrototypeSymbols : toIndexedObject(O));
       var result = [];
       $forEach(names, function (key) {
         if (has(AllSymbols, key) && (!IS_OBJECT_PROTOTYPE || has(ObjectPrototype, key))) {
           result.push(AllSymbols[key]);
         }
       });
       return result;
     };
  
     // `Symbol` constructor
     // https://tc39.github.io/ecma262/#sec-symbol-constructor
     if (!nativeSymbol) {
       $Symbol = function Symbol() {
         if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor');
         var description = !arguments.length || arguments[0] === undefined ? undefined : String(arguments[0]);
         var tag = uid(description);
         var setter = function (value) {
           if (this === ObjectPrototype) setter.call(ObjectPrototypeSymbols, value);
           if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
           setSymbolDescriptor(this, tag, createPropertyDescriptor(1, value));
         };
         if (descriptors && USE_SETTER) setSymbolDescriptor(ObjectPrototype, tag, { configurable: true, set: setter });
         return wrap(tag, description);
       };
  
       redefine($Symbol[PROTOTYPE$1], 'toString', function toString() {
         return getInternalState(this).tag;
       });
  
       objectPropertyIsEnumerable.f = $propertyIsEnumerable;
       objectDefineProperty.f = $defineProperty;
       objectGetOwnPropertyDescriptor.f = $getOwnPropertyDescriptor;
       objectGetOwnPropertyNames.f = objectGetOwnPropertyNamesExternal.f = $getOwnPropertyNames;
       objectGetOwnPropertySymbols.f = $getOwnPropertySymbols;
  
       if (descriptors) {
         // https://github.com/tc39/proposal-Symbol-description
         nativeDefineProperty$1($Symbol[PROTOTYPE$1], 'description', {
           configurable: true,
           get: function description() {
             return getInternalState(this).description;
           }
         });
         {
           redefine(ObjectPrototype, 'propertyIsEnumerable', $propertyIsEnumerable, { unsafe: true });
         }
       }
  
       wrappedWellKnownSymbol.f = function (name) {
         return wrap(wellKnownSymbol(name), name);
       };
     }
  
     _export({ global: true, wrap: true, forced: !nativeSymbol, sham: !nativeSymbol }, {
       Symbol: $Symbol
     });
  
     $forEach(objectKeys(WellKnownSymbolsStore), function (name) {
       defineWellKnownSymbol(name);
     });
  
     _export({ target: SYMBOL, stat: true, forced: !nativeSymbol }, {
       // `Symbol.for` method
       // https://tc39.github.io/ecma262/#sec-symbol.for
       'for': function (key) {
         var string = String(key);
         if (has(StringToSymbolRegistry, string)) return StringToSymbolRegistry[string];
         var symbol = $Symbol(string);
         StringToSymbolRegistry[string] = symbol;
         SymbolToStringRegistry[symbol] = string;
         return symbol;
       },
       // `Symbol.keyFor` method
       // https://tc39.github.io/ecma262/#sec-symbol.keyfor
       keyFor: function keyFor(sym) {
         if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol');
         if (has(SymbolToStringRegistry, sym)) return SymbolToStringRegistry[sym];
       },
       useSetter: function () { USE_SETTER = true; },
       useSimple: function () { USE_SETTER = false; }
     });
  
     _export({ target: 'Object', stat: true, forced: !nativeSymbol, sham: !descriptors }, {
       // `Object.create` method
       // https://tc39.github.io/ecma262/#sec-object.create
       create: $create,
       // `Object.defineProperty` method
       // https://tc39.github.io/ecma262/#sec-object.defineproperty
       defineProperty: $defineProperty,
       // `Object.defineProperties` method
       // https://tc39.github.io/ecma262/#sec-object.defineproperties
       defineProperties: $defineProperties,
       // `Object.getOwnPropertyDescriptor` method
       // https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptors
       getOwnPropertyDescriptor: $getOwnPropertyDescriptor
     });
  
     _export({ target: 'Object', stat: true, forced: !nativeSymbol }, {
       // `Object.getOwnPropertyNames` method
       // https://tc39.github.io/ecma262/#sec-object.getownpropertynames
       getOwnPropertyNames: $getOwnPropertyNames,
       // `Object.getOwnPropertySymbols` method
       // https://tc39.github.io/ecma262/#sec-object.getownpropertysymbols
       getOwnPropertySymbols: $getOwnPropertySymbols
     });
  
     // Chrome 38 and 39 `Object.getOwnPropertySymbols` fails on primitives
     // https://bugs.chromium.org/p/v8/issues/detail?id=3443
     _export({ target: 'Object', stat: true, forced: fails(function () { objectGetOwnPropertySymbols.f(1); }) }, {
       getOwnPropertySymbols: function getOwnPropertySymbols(it) {
         return objectGetOwnPropertySymbols.f(toObject(it));
       }
     });
  
     // `JSON.stringify` method behavior with symbols
     // https://tc39.github.io/ecma262/#sec-json.stringify
     JSON && _export({ target: 'JSON', stat: true, forced: !nativeSymbol || fails(function () {
       var symbol = $Symbol();
       // MS Edge converts symbol values to JSON as {}
       return nativeJSONStringify([symbol]) != '[null]'
         // WebKit converts symbol values to JSON as null
         || nativeJSONStringify({ a: symbol }) != '{}'
         // V8 throws on boxed symbols
         || nativeJSONStringify(Object(symbol)) != '{}';
     }) }, {
       stringify: function stringify(it) {
         var args = [it];
         var index = 1;
         var replacer, $replacer;
         while (arguments.length > index) args.push(arguments[index++]);
         $replacer = replacer = args[1];
         if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined
         if (!isArray(replacer)) replacer = function (key, value) {
           if (typeof $replacer == 'function') value = $replacer.call(this, key, value);
           if (!isSymbol(value)) return value;
         };
         args[1] = replacer;
         return nativeJSONStringify.apply(JSON, args);
       }
     });
  
     // `Symbol.prototype[@@toPrimitive]` method
     // https://tc39.github.io/ecma262/#sec-symbol.prototype-@@toprimitive
     if (!$Symbol[PROTOTYPE$1][TO_PRIMITIVE]) hide($Symbol[PROTOTYPE$1], TO_PRIMITIVE, $Symbol[PROTOTYPE$1].valueOf);
     // `Symbol.prototype[@@toStringTag]` property
     // https://tc39.github.io/ecma262/#sec-symbol.prototype-@@tostringtag
     setToStringTag($Symbol, SYMBOL);
  
     hiddenKeys[HIDDEN] = true;
  
     var defineProperty$2 = objectDefineProperty.f;
  
  
     var NativeSymbol = global_1.Symbol;
  
     if (descriptors && typeof NativeSymbol == 'function' && (!('description' in NativeSymbol.prototype) ||
       // Safari 12 bug
       NativeSymbol().description !== undefined
     )) {
       var EmptyStringDescriptionStore = {};
       // wrap Symbol constructor for correct work with undefined description
       var SymbolWrapper = function Symbol() {
         var description = arguments.length < 1 || arguments[0] === undefined ? undefined : String(arguments[0]);
         var result = this instanceof SymbolWrapper
           ? new NativeSymbol(description)
           // in Edge 13, String(Symbol(undefined)) === 'Symbol(undefined)'
           : description === undefined ? NativeSymbol() : NativeSymbol(description);
         if (description === '') EmptyStringDescriptionStore[result] = true;
         return result;
       };
       copyConstructorProperties(SymbolWrapper, NativeSymbol);
       var symbolPrototype = SymbolWrapper.prototype = NativeSymbol.prototype;
       symbolPrototype.constructor = SymbolWrapper;
  
       var symbolToString = symbolPrototype.toString;
       var native = String(NativeSymbol('test')) == 'Symbol(test)';
       var regexp = /^Symbol\((.*)\)[^)]+$/;
       defineProperty$2(symbolPrototype, 'description', {
         configurable: true,
         get: function description() {
           var symbol = isObject(this) ? this.valueOf() : this;
           var string = symbolToString.call(symbol);
           if (has(EmptyStringDescriptionStore, symbol)) return '';
           var desc = native ? string.slice(7, -1) : string.replace(regexp, '$1');
           return desc === '' ? undefined : desc;
         }
       });
  
       _export({ global: true, forced: true }, {
         Symbol: SymbolWrapper
       });
     }
  
     // `Symbol.iterator` well-known symbol
     // https://tc39.github.io/ecma262/#sec-symbol.iterator
     defineWellKnownSymbol('iterator');
  
     var createProperty = function (object, key, value) {
       var propertyKey = toPrimitive(key);
       if (propertyKey in object) objectDefineProperty.f(object, propertyKey, createPropertyDescriptor(0, value));
       else object[propertyKey] = value;
     };
  
     var SPECIES$1 = wellKnownSymbol('species');
  
     var arrayMethodHasSpeciesSupport = function (METHOD_NAME) {
       return !fails(function () {
         var array = [];
         var constructor = array.constructor = {};
         constructor[SPECIES$1] = function () {
           return { foo: 1 };
         };
         return array[METHOD_NAME](Boolean).foo !== 1;
       });
     };
  
     var IS_CONCAT_SPREADABLE = wellKnownSymbol('isConcatSpreadable');
     var MAX_SAFE_INTEGER = 0x1FFFFFFFFFFFFF;
     var MAXIMUM_ALLOWED_INDEX_EXCEEDED = 'Maximum allowed index exceeded';
  
     var IS_CONCAT_SPREADABLE_SUPPORT = !fails(function () {
       var array = [];
       array[IS_CONCAT_SPREADABLE] = false;
       return array.concat()[0] !== array;
     });
  
     var SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('concat');
  
     var isConcatSpreadable = function (O) {
       if (!isObject(O)) return false;
       var spreadable = O[IS_CONCAT_SPREADABLE];
       return spreadable !== undefined ? !!spreadable : isArray(O);
     };
  
     var FORCED = !IS_CONCAT_SPREADABLE_SUPPORT || !SPECIES_SUPPORT;
  
     // `Array.prototype.concat` method
     // https://tc39.github.io/ecma262/#sec-array.prototype.concat
     // with adding support of @@isConcatSpreadable and @@species
     _export({ target: 'Array', proto: true, forced: FORCED }, {
       concat: function concat(arg) { // eslint-disable-line no-unused-vars
         var O = toObject(this);
         var A = arraySpeciesCreate(O, 0);
         var n = 0;
         var i, k, length, len, E;
         for (i = -1, length = arguments.length; i < length; i++) {
           E = i === -1 ? O : arguments[i];
           if (isConcatSpreadable(E)) {
             len = toLength(E.length);
             if (n + len > MAX_SAFE_INTEGER) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
             for (k = 0; k < len; k++, n++) if (k in E) createProperty(A, n, E[k]);
           } else {
             if (n >= MAX_SAFE_INTEGER) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
             createProperty(A, n++, E);
           }
         }
         A.length = n;
         return A;
       }
     });
  
     var $filter = arrayIteration.filter;
  
  
     // `Array.prototype.filter` method
     // https://tc39.github.io/ecma262/#sec-array.prototype.filter
     // with adding support of @@species
     _export({ target: 'Array', proto: true, forced: !arrayMethodHasSpeciesSupport('filter') }, {
       filter: function filter(callbackfn /* , thisArg */) {
         return $filter(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
       }
     });
  
     var $find = arrayIteration.find;
  
  
     var FIND = 'find';
     var SKIPS_HOLES = true;
  
     // Shouldn't skip holes
     if (FIND in []) Array(1)[FIND](function () { SKIPS_HOLES = false; });
  
     // `Array.prototype.find` method
     // https://tc39.github.io/ecma262/#sec-array.prototype.find
     _export({ target: 'Array', proto: true, forced: SKIPS_HOLES }, {
       find: function find(callbackfn /* , that = undefined */) {
         return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
       }
     });
  
     // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
     addToUnscopables(FIND);
  
     var correctPrototypeGetter = !fails(function () {
       function F() { /* empty */ }
       F.prototype.constructor = null;
       return Object.getPrototypeOf(new F()) !== F.prototype;
     });
  
     var IE_PROTO$1 = sharedKey('IE_PROTO');
     var ObjectPrototype$1 = Object.prototype;
  
     // `Object.getPrototypeOf` method
     // https://tc39.github.io/ecma262/#sec-object.getprototypeof
     var objectGetPrototypeOf = correctPrototypeGetter ? Object.getPrototypeOf : function (O) {
       O = toObject(O);
       if (has(O, IE_PROTO$1)) return O[IE_PROTO$1];
       if (typeof O.constructor == 'function' && O instanceof O.constructor) {
         return O.constructor.prototype;
       } return O instanceof Object ? ObjectPrototype$1 : null;
     };
  
     var ITERATOR = wellKnownSymbol('iterator');
     var BUGGY_SAFARI_ITERATORS = false;
  
     var returnThis = function () { return this; };
  
     // `%IteratorPrototype%` object
     // https://tc39.github.io/ecma262/#sec-%iteratorprototype%-object
     var IteratorPrototype, PrototypeOfArrayIteratorPrototype, arrayIterator;
  
     if ([].keys) {
       arrayIterator = [].keys();
       // Safari 8 has buggy iterators w/o `next`
       if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS = true;
       else {
         PrototypeOfArrayIteratorPrototype = objectGetPrototypeOf(objectGetPrototypeOf(arrayIterator));
         if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype = PrototypeOfArrayIteratorPrototype;
       }
     }
  
     if (IteratorPrototype == undefined) IteratorPrototype = {};
  
     // 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
     if ( !has(IteratorPrototype, ITERATOR)) hide(IteratorPrototype, ITERATOR, returnThis);
  
     var iteratorsCore = {
       IteratorPrototype: IteratorPrototype,
       BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS
     };
  
     var IteratorPrototype$1 = iteratorsCore.IteratorPrototype;
  
     var createIteratorConstructor = function (IteratorConstructor, NAME, next) {
       var TO_STRING_TAG = NAME + ' Iterator';
       IteratorConstructor.prototype = objectCreate(IteratorPrototype$1, { next: createPropertyDescriptor(1, next) });
       setToStringTag(IteratorConstructor, TO_STRING_TAG, false);
       return IteratorConstructor;
     };
  
     var aPossiblePrototype = function (it) {
       if (!isObject(it) && it !== null) {
         throw TypeError("Can't set " + String(it) + ' as a prototype');
       } return it;
     };
  
     // `Object.setPrototypeOf` method
     // https://tc39.github.io/ecma262/#sec-object.setprototypeof
     // Works with __proto__ only. Old v8 can't work with null proto objects.
     /* eslint-disable no-proto */
     var objectSetPrototypeOf = Object.setPrototypeOf || ('__proto__' in {} ? function () {
       var CORRECT_SETTER = false;
       var test = {};
       var setter;
       try {
         setter = Object.getOwnPropertyDescriptor(Object.prototype, '__proto__').set;
         setter.call(test, []);
         CORRECT_SETTER = test instanceof Array;
       } catch (error) { /* empty */ }
       return function setPrototypeOf(O, proto) {
         anObject(O);
         aPossiblePrototype(proto);
         if (CORRECT_SETTER) setter.call(O, proto);
         else O.__proto__ = proto;
         return O;
       };
     }() : undefined);
  
     var IteratorPrototype$2 = iteratorsCore.IteratorPrototype;
     var BUGGY_SAFARI_ITERATORS$1 = iteratorsCore.BUGGY_SAFARI_ITERATORS;
     var ITERATOR$1 = wellKnownSymbol('iterator');
     var KEYS = 'keys';
     var VALUES = 'values';
     var ENTRIES = 'entries';
  
     var returnThis$1 = function () { return this; };
  
     var defineIterator = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {
       createIteratorConstructor(IteratorConstructor, NAME, next);
  
       var getIterationMethod = function (KIND) {
         if (KIND === DEFAULT && defaultIterator) return defaultIterator;
         if (!BUGGY_SAFARI_ITERATORS$1 && KIND in IterablePrototype) return IterablePrototype[KIND];
         switch (KIND) {
           case KEYS: return function keys() { return new IteratorConstructor(this, KIND); };
           case VALUES: return function values() { return new IteratorConstructor(this, KIND); };
           case ENTRIES: return function entries() { return new IteratorConstructor(this, KIND); };
         } return function () { return new IteratorConstructor(this); };
       };
  
       var TO_STRING_TAG = NAME + ' Iterator';
       var INCORRECT_VALUES_NAME = false;
       var IterablePrototype = Iterable.prototype;
       var nativeIterator = IterablePrototype[ITERATOR$1]
         || IterablePrototype['@@iterator']
         || DEFAULT && IterablePrototype[DEFAULT];
       var defaultIterator = !BUGGY_SAFARI_ITERATORS$1 && nativeIterator || getIterationMethod(DEFAULT);
       var anyNativeIterator = NAME == 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;
       var CurrentIteratorPrototype, methods, KEY;
  
       // fix native
       if (anyNativeIterator) {
         CurrentIteratorPrototype = objectGetPrototypeOf(anyNativeIterator.call(new Iterable()));
         if (IteratorPrototype$2 !== Object.prototype && CurrentIteratorPrototype.next) {
           if ( objectGetPrototypeOf(CurrentIteratorPrototype) !== IteratorPrototype$2) {
             if (objectSetPrototypeOf) {
               objectSetPrototypeOf(CurrentIteratorPrototype, IteratorPrototype$2);
             } else if (typeof CurrentIteratorPrototype[ITERATOR$1] != 'function') {
               hide(CurrentIteratorPrototype, ITERATOR$1, returnThis$1);
             }
           }
           // Set @@toStringTag to native iterators
           setToStringTag(CurrentIteratorPrototype, TO_STRING_TAG, true);
         }
       }
  
       // fix Array#{values, @@iterator}.name in V8 / FF
       if (DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) {
         INCORRECT_VALUES_NAME = true;
         defaultIterator = function values() { return nativeIterator.call(this); };
       }
  
       // define iterator
       if ( IterablePrototype[ITERATOR$1] !== defaultIterator) {
         hide(IterablePrototype, ITERATOR$1, defaultIterator);
       }
  
       // export additional methods
       if (DEFAULT) {
         methods = {
           values: getIterationMethod(VALUES),
           keys: IS_SET ? defaultIterator : getIterationMethod(KEYS),
           entries: getIterationMethod(ENTRIES)
         };
         if (FORCED) for (KEY in methods) {
           if (BUGGY_SAFARI_ITERATORS$1 || INCORRECT_VALUES_NAME || !(KEY in IterablePrototype)) {
             redefine(IterablePrototype, KEY, methods[KEY]);
           }
         } else _export({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS$1 || INCORRECT_VALUES_NAME }, methods);
       }
  
       return methods;
     };
  
     var ARRAY_ITERATOR = 'Array Iterator';
     var setInternalState$1 = internalState.set;
     var getInternalState$1 = internalState.getterFor(ARRAY_ITERATOR);
  
     // `Array.prototype.entries` method
     // https://tc39.github.io/ecma262/#sec-array.prototype.entries
     // `Array.prototype.keys` method
     // https://tc39.github.io/ecma262/#sec-array.prototype.keys
     // `Array.prototype.values` method
     // https://tc39.github.io/ecma262/#sec-array.prototype.values
     // `Array.prototype[@@iterator]` method
     // https://tc39.github.io/ecma262/#sec-array.prototype-@@iterator
     // `CreateArrayIterator` internal method
     // https://tc39.github.io/ecma262/#sec-createarrayiterator
     var es_array_iterator = defineIterator(Array, 'Array', function (iterated, kind) {
       setInternalState$1(this, {
         type: ARRAY_ITERATOR,
         target: toIndexedObject(iterated), // target
         index: 0,                          // next index
         kind: kind                         // kind
       });
     // `%ArrayIteratorPrototype%.next` method
     // https://tc39.github.io/ecma262/#sec-%arrayiteratorprototype%.next
     }, function () {
       var state = getInternalState$1(this);
       var target = state.target;
       var kind = state.kind;
       var index = state.index++;
       if (!target || index >= target.length) {
         state.target = undefined;
         return { value: undefined, done: true };
       }
       if (kind == 'keys') return { value: index, done: false };
       if (kind == 'values') return { value: target[index], done: false };
       return { value: [index, target[index]], done: false };
     }, 'values');
  
     // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
     addToUnscopables('keys');
     addToUnscopables('values');
     addToUnscopables('entries');
  
     var sloppyArrayMethod = function (METHOD_NAME, argument) {
       var method = [][METHOD_NAME];
       return !method || !fails(function () {
         // eslint-disable-next-line no-useless-call,no-throw-literal
         method.call(null, argument || function () { throw 1; }, 1);
       });
     };
  
     var nativeJoin = [].join;
  
     var ES3_STRINGS = indexedObject != Object;
     var SLOPPY_METHOD = sloppyArrayMethod('join', ',');
  
     // `Array.prototype.join` method
     // https://tc39.github.io/ecma262/#sec-array.prototype.join
     _export({ target: 'Array', proto: true, forced: ES3_STRINGS || SLOPPY_METHOD }, {
       join: function join(separator) {
         return nativeJoin.call(toIndexedObject(this), separator === undefined ? ',' : separator);
       }
     });
  
     var $map = arrayIteration.map;
  
  
     // `Array.prototype.map` method
     // https://tc39.github.io/ecma262/#sec-array.prototype.map
     // with adding support of @@species
     _export({ target: 'Array', proto: true, forced: !arrayMethodHasSpeciesSupport('map') }, {
       map: function map(callbackfn /* , thisArg */) {
         return $map(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
       }
     });
  
     var SPECIES$2 = wellKnownSymbol('species');
     var nativeSlice = [].slice;
     var max$1 = Math.max;
  
     // `Array.prototype.slice` method
     // https://tc39.github.io/ecma262/#sec-array.prototype.slice
     // fallback for not array-like ES3 strings and DOM objects
     _export({ target: 'Array', proto: true, forced: !arrayMethodHasSpeciesSupport('slice') }, {
       slice: function slice(start, end) {
         var O = toIndexedObject(this);
         var length = toLength(O.length);
         var k = toAbsoluteIndex(start, length);
         var fin = toAbsoluteIndex(end === undefined ? length : end, length);
         // inline `ArraySpeciesCreate` for usage native `Array#slice` where it's possible
         var Constructor, result, n;
         if (isArray(O)) {
           Constructor = O.constructor;
           // cross-realm fallback
           if (typeof Constructor == 'function' && (Constructor === Array || isArray(Constructor.prototype))) {
             Constructor = undefined;
           } else if (isObject(Constructor)) {
             Constructor = Constructor[SPECIES$2];
             if (Constructor === null) Constructor = undefined;
           }
           if (Constructor === Array || Constructor === undefined) {
             return nativeSlice.call(O, k, fin);
           }
         }
         result = new (Constructor === undefined ? Array : Constructor)(max$1(fin - k, 0));
         for (n = 0; k < fin; k++, n++) if (k in O) createProperty(result, n, O[k]);
         result.length = n;
         return result;
       }
     });
  
     var defineProperty$3 = objectDefineProperty.f;
  
     var FunctionPrototype = Function.prototype;
     var FunctionPrototypeToString = FunctionPrototype.toString;
     var nameRE = /^\s*function ([^ (]*)/;
     var NAME = 'name';
  
     // Function instances `.name` property
     // https://tc39.github.io/ecma262/#sec-function-instances-name
     if (descriptors && !(NAME in FunctionPrototype)) {
       defineProperty$3(FunctionPrototype, NAME, {
         configurable: true,
         get: function () {
           try {
             return FunctionPrototypeToString.call(this).match(nameRE)[1];
           } catch (error) {
             return '';
           }
         }
       });
     }
  
     var propertyIsEnumerable = objectPropertyIsEnumerable.f;
  
     // `Object.{ entries, values }` methods implementation
     var createMethod$3 = function (TO_ENTRIES) {
       return function (it) {
         var O = toIndexedObject(it);
         var keys = objectKeys(O);
         var length = keys.length;
         var i = 0;
         var result = [];
         var key;
         while (length > i) {
           key = keys[i++];
           if (!descriptors || propertyIsEnumerable.call(O, key)) {
             result.push(TO_ENTRIES ? [key, O[key]] : O[key]);
           }
         }
         return result;
       };
     };
  
     var objectToArray = {
       // `Object.entries` method
       // https://tc39.github.io/ecma262/#sec-object.entries
       entries: createMethod$3(true),
       // `Object.values` method
       // https://tc39.github.io/ecma262/#sec-object.values
       values: createMethod$3(false)
     };
  
     var $entries = objectToArray.entries;
  
     // `Object.entries` method
     // https://tc39.github.io/ecma262/#sec-object.entries
     _export({ target: 'Object', stat: true }, {
       entries: function entries(O) {
         return $entries(O);
       }
     });
  
     var FAILS_ON_PRIMITIVES = fails(function () { objectKeys(1); });
  
     // `Object.keys` method
     // https://tc39.github.io/ecma262/#sec-object.keys
     _export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES }, {
       keys: function keys(it) {
         return objectKeys(toObject(it));
       }
     });
  
     var TO_STRING_TAG$1 = wellKnownSymbol('toStringTag');
     // ES3 wrong here
     var CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) == 'Arguments';
  
     // fallback for IE11 Script Access Denied error
     var tryGet = function (it, key) {
       try {
         return it[key];
       } catch (error) { /* empty */ }
     };
  
     // getting tag from ES6+ `Object.prototype.toString`
     var classof = function (it) {
       var O, tag, result;
       return it === undefined ? 'Undefined' : it === null ? 'Null'
         // @@toStringTag case
         : typeof (tag = tryGet(O = Object(it), TO_STRING_TAG$1)) == 'string' ? tag
         // builtinTag case
         : CORRECT_ARGUMENTS ? classofRaw(O)
         // ES3 arguments fallback
         : (result = classofRaw(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : result;
     };
  
     var TO_STRING_TAG$2 = wellKnownSymbol('toStringTag');
     var test = {};
  
     test[TO_STRING_TAG$2] = 'z';
  
     // `Object.prototype.toString` method implementation
     // https://tc39.github.io/ecma262/#sec-object.prototype.tostring
     var objectToString = String(test) !== '[object z]' ? function toString() {
       return '[object ' + classof(this) + ']';
     } : test.toString;
  
     var ObjectPrototype$2 = Object.prototype;
  
     // `Object.prototype.toString` method
     // https://tc39.github.io/ecma262/#sec-object.prototype.tostring
     if (objectToString !== ObjectPrototype$2.toString) {
       redefine(ObjectPrototype$2, 'toString', objectToString, { unsafe: true });
     }
  
     // `String.prototype.{ codePointAt, at }` methods implementation
     var createMethod$4 = function (CONVERT_TO_STRING) {
       return function ($this, pos) {
         var S = String(requireObjectCoercible($this));
         var position = toInteger(pos);
         var size = S.length;
         var first, second;
         if (position < 0 || position >= size) return CONVERT_TO_STRING ? '' : undefined;
         first = S.charCodeAt(position);
         return first < 0xD800 || first > 0xDBFF || position + 1 === size
           || (second = S.charCodeAt(position + 1)) < 0xDC00 || second > 0xDFFF
             ? CONVERT_TO_STRING ? S.charAt(position) : first
             : CONVERT_TO_STRING ? S.slice(position, position + 2) : (first - 0xD800 << 10) + (second - 0xDC00) + 0x10000;
       };
     };
  
     var stringMultibyte = {
       // `String.prototype.codePointAt` method
       // https://tc39.github.io/ecma262/#sec-string.prototype.codepointat
       codeAt: createMethod$4(false),
       // `String.prototype.at` method
       // https://github.com/mathiasbynens/String.prototype.at
       charAt: createMethod$4(true)
     };
  
     var charAt = stringMultibyte.charAt;
  
  
  
     var STRING_ITERATOR = 'String Iterator';
     var setInternalState$2 = internalState.set;
     var getInternalState$2 = internalState.getterFor(STRING_ITERATOR);
  
     // `String.prototype[@@iterator]` method
     // https://tc39.github.io/ecma262/#sec-string.prototype-@@iterator
     defineIterator(String, 'String', function (iterated) {
       setInternalState$2(this, {
         type: STRING_ITERATOR,
         string: String(iterated),
         index: 0
       });
     // `%StringIteratorPrototype%.next` method
     // https://tc39.github.io/ecma262/#sec-%stringiteratorprototype%.next
     }, function next() {
       var state = getInternalState$2(this);
       var string = state.string;
       var index = state.index;
       var point;
       if (index >= string.length) return { value: undefined, done: true };
       point = charAt(string, index);
       state.index += point.length;
       return { value: point, done: false };
     });
  
     // `RegExp.prototype.flags` getter implementation
     // https://tc39.github.io/ecma262/#sec-get-regexp.prototype.flags
     var regexpFlags = function () {
       var that = anObject(this);
       var result = '';
       if (that.global) result += 'g';
       if (that.ignoreCase) result += 'i';
       if (that.multiline) result += 'm';
       if (that.dotAll) result += 's';
       if (that.unicode) result += 'u';
       if (that.sticky) result += 'y';
       return result;
     };
  
     var nativeExec = RegExp.prototype.exec;
     // This always refers to the native implementation, because the
     // String#replace polyfill uses ./fix-regexp-well-known-symbol-logic.js,
     // which loads this file before patching the method.
     var nativeReplace = String.prototype.replace;
  
     var patchedExec = nativeExec;
  
     var UPDATES_LAST_INDEX_WRONG = (function () {
       var re1 = /a/;
       var re2 = /b*/g;
       nativeExec.call(re1, 'a');
       nativeExec.call(re2, 'a');
       return re1.lastIndex !== 0 || re2.lastIndex !== 0;
     })();
  
     // nonparticipating capturing group, copied from es5-shim's String#split patch.
     var NPCG_INCLUDED = /()??/.exec('')[1] !== undefined;
  
     var PATCH = UPDATES_LAST_INDEX_WRONG || NPCG_INCLUDED;
  
     if (PATCH) {
       patchedExec = function exec(str) {
         var re = this;
         var lastIndex, reCopy, match, i;
  
         if (NPCG_INCLUDED) {
           reCopy = new RegExp('^' + re.source + '$(?!\\s)', regexpFlags.call(re));
         }
         if (UPDATES_LAST_INDEX_WRONG) lastIndex = re.lastIndex;
  
         match = nativeExec.call(re, str);
  
         if (UPDATES_LAST_INDEX_WRONG && match) {
           re.lastIndex = re.global ? match.index + match[0].length : lastIndex;
         }
         if (NPCG_INCLUDED && match && match.length > 1) {
           // Fix browsers whose `exec` methods don't consistently return `undefined`
           // for NPCG, like IE8. NOTE: This doesn' work for /(.?)?/
           nativeReplace.call(match[0], reCopy, function () {
             for (i = 1; i < arguments.length - 2; i++) {
               if (arguments[i] === undefined) match[i] = undefined;
             }
           });
         }
  
         return match;
       };
     }
  
     var regexpExec = patchedExec;
  
     var SPECIES$3 = wellKnownSymbol('species');
  
     var REPLACE_SUPPORTS_NAMED_GROUPS = !fails(function () {
       // #replace needs built-in support for named groups.
       // #match works fine because it just return the exec results, even if it has
       // a "grops" property.
       var re = /./;
       re.exec = function () {
         var result = [];
         result.groups = { a: '7' };
         return result;
       };
       return ''.replace(re, '$<a>') !== '7';
     });
  
     // Chrome 51 has a buggy "split" implementation when RegExp#exec !== nativeExec
     // Weex JS has frozen built-in prototypes, so use try / catch wrapper
     var SPLIT_WORKS_WITH_OVERWRITTEN_EXEC = !fails(function () {
       var re = /(?:)/;
       var originalExec = re.exec;
       re.exec = function () { return originalExec.apply(this, arguments); };
       var result = 'ab'.split(re);
       return result.length !== 2 || result[0] !== 'a' || result[1] !== 'b';
     });
  
     var fixRegexpWellKnownSymbolLogic = function (KEY, length, exec, sham) {
       var SYMBOL = wellKnownSymbol(KEY);
  
       var DELEGATES_TO_SYMBOL = !fails(function () {
         // String methods call symbol-named RegEp methods
         var O = {};
         O[SYMBOL] = function () { return 7; };
         return ''[KEY](O) != 7;
       });
  
       var DELEGATES_TO_EXEC = DELEGATES_TO_SYMBOL && !fails(function () {
         // Symbol-named RegExp methods call .exec
         var execCalled = false;
         var re = /a/;
         re.exec = function () { execCalled = true; return null; };
  
         if (KEY === 'split') {
           // RegExp[@@split] doesn't call the regex's exec method, but first creates
           // a new one. We need to return the patched regex when creating the new one.
           re.constructor = {};
           re.constructor[SPECIES$3] = function () { return re; };
         }
  
         re[SYMBOL]('');
         return !execCalled;
       });
  
       if (
         !DELEGATES_TO_SYMBOL ||
         !DELEGATES_TO_EXEC ||
         (KEY === 'replace' && !REPLACE_SUPPORTS_NAMED_GROUPS) ||
         (KEY === 'split' && !SPLIT_WORKS_WITH_OVERWRITTEN_EXEC)
       ) {
         var nativeRegExpMethod = /./[SYMBOL];
         var methods = exec(SYMBOL, ''[KEY], function (nativeMethod, regexp, str, arg2, forceStringMethod) {
           if (regexp.exec === regexpExec) {
             if (DELEGATES_TO_SYMBOL && !forceStringMethod) {
               // The native String method already delegates to @@method (this
               // polyfilled function), leasing to infinite recursion.
               // We avoid it by directly calling the native @@method method.
               return { done: true, value: nativeRegExpMethod.call(regexp, str, arg2) };
             }
             return { done: true, value: nativeMethod.call(str, regexp, arg2) };
           }
           return { done: false };
         });
         var stringMethod = methods[0];
         var regexMethod = methods[1];
  
         redefine(String.prototype, KEY, stringMethod);
         redefine(RegExp.prototype, SYMBOL, length == 2
           // 21.2.5.8 RegExp.prototype[@@replace](string, replaceValue)
           // 21.2.5.11 RegExp.prototype[@@split](string, limit)
           ? function (string, arg) { return regexMethod.call(string, this, arg); }
           // 21.2.5.6 RegExp.prototype[@@match](string)
           // 21.2.5.9 RegExp.prototype[@@search](string)
           : function (string) { return regexMethod.call(string, this); }
         );
         if (sham) hide(RegExp.prototype[SYMBOL], 'sham', true);
       }
     };
  
     var SPECIES$4 = wellKnownSymbol('species');
  
     // `SpeciesConstructor` abstract operation
     // https://tc39.github.io/ecma262/#sec-speciesconstructor
     var speciesConstructor = function (O, defaultConstructor) {
       var C = anObject(O).constructor;
       var S;
       return C === undefined || (S = anObject(C)[SPECIES$4]) == undefined ? defaultConstructor : aFunction$1(S);
     };
  
     var charAt$1 = stringMultibyte.charAt;
  
     // `AdvanceStringIndex` abstract operation
     // https://tc39.github.io/ecma262/#sec-advancestringindex
     var advanceStringIndex = function (S, index, unicode) {
       return index + (unicode ? charAt$1(S, index).length : 1);
     };
  
     // `RegExpExec` abstract operation
     // https://tc39.github.io/ecma262/#sec-regexpexec
     var regexpExecAbstract = function (R, S) {
       var exec = R.exec;
       if (typeof exec === 'function') {
         var result = exec.call(R, S);
         if (typeof result !== 'object') {
           throw TypeError('RegExp exec method returned something other than an Object or null');
         }
         return result;
       }
  
       if (classofRaw(R) !== 'RegExp') {
         throw TypeError('RegExp#exec called on incompatible receiver');
       }
  
       return regexpExec.call(R, S);
     };
  
     var arrayPush = [].push;
     var min$2 = Math.min;
     var MAX_UINT32 = 0xFFFFFFFF;
  
     // babel-minify transpiles RegExp('x', 'y') -> /x/y and it causes SyntaxError
     var SUPPORTS_Y = !fails(function () { return !RegExp(MAX_UINT32, 'y'); });
  
     // @@split logic
     fixRegexpWellKnownSymbolLogic('split', 2, function (SPLIT, nativeSplit, maybeCallNative) {
       var internalSplit;
       if (
         'abbc'.split(/(b)*/)[1] == 'c' ||
         'test'.split(/(?:)/, -1).length != 4 ||
         'ab'.split(/(?:ab)*/).length != 2 ||
         '.'.split(/(.?)(.?)/).length != 4 ||
         '.'.split(/()()/).length > 1 ||
         ''.split(/.?/).length
       ) {
         // based on es5-shim implementation, need to rework it
         internalSplit = function (separator, limit) {
           var string = String(requireObjectCoercible(this));
           var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
           if (lim === 0) return [];
           if (separator === undefined) return [string];
           // If `separator` is not a regex, use native split
           if (!isRegexp(separator)) {
             return nativeSplit.call(string, separator, lim);
           }
           var output = [];
           var flags = (separator.ignoreCase ? 'i' : '') +
                       (separator.multiline ? 'm' : '') +
                       (separator.unicode ? 'u' : '') +
                       (separator.sticky ? 'y' : '');
           var lastLastIndex = 0;
           // Make `global` and avoid `lastIndex` issues by working with a copy
           var separatorCopy = new RegExp(separator.source, flags + 'g');
           var match, lastIndex, lastLength;
           while (match = regexpExec.call(separatorCopy, string)) {
             lastIndex = separatorCopy.lastIndex;
             if (lastIndex > lastLastIndex) {
               output.push(string.slice(lastLastIndex, match.index));
               if (match.length > 1 && match.index < string.length) arrayPush.apply(output, match.slice(1));
               lastLength = match[0].length;
               lastLastIndex = lastIndex;
               if (output.length >= lim) break;
             }
             if (separatorCopy.lastIndex === match.index) separatorCopy.lastIndex++; // Avoid an infinite loop
           }
           if (lastLastIndex === string.length) {
             if (lastLength || !separatorCopy.test('')) output.push('');
           } else output.push(string.slice(lastLastIndex));
           return output.length > lim ? output.slice(0, lim) : output;
         };
       // Chakra, V8
       } else if ('0'.split(undefined, 0).length) {
         internalSplit = function (separator, limit) {
           return separator === undefined && limit === 0 ? [] : nativeSplit.call(this, separator, limit);
         };
       } else internalSplit = nativeSplit;
  
       return [
         // `String.prototype.split` method
         // https://tc39.github.io/ecma262/#sec-string.prototype.split
         function split(separator, limit) {
           var O = requireObjectCoercible(this);
           var splitter = separator == undefined ? undefined : separator[SPLIT];
           return splitter !== undefined
             ? splitter.call(separator, O, limit)
             : internalSplit.call(String(O), separator, limit);
         },
         // `RegExp.prototype[@@split]` method
         // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@split
         //
         // NOTE: This cannot be properly polyfilled in engines that don't support
         // the 'y' flag.
         function (regexp, limit) {
           var res = maybeCallNative(internalSplit, regexp, this, limit, internalSplit !== nativeSplit);
           if (res.done) return res.value;
  
           var rx = anObject(regexp);
           var S = String(this);
           var C = speciesConstructor(rx, RegExp);
  
           var unicodeMatching = rx.unicode;
           var flags = (rx.ignoreCase ? 'i' : '') +
                       (rx.multiline ? 'm' : '') +
                       (rx.unicode ? 'u' : '') +
                       (SUPPORTS_Y ? 'y' : 'g');
  
           // ^(? + rx + ) is needed, in combination with some S slicing, to
           // simulate the 'y' flag.
           var splitter = new C(SUPPORTS_Y ? rx : '^(?:' + rx.source + ')', flags);
           var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
           if (lim === 0) return [];
           if (S.length === 0) return regexpExecAbstract(splitter, S) === null ? [S] : [];
           var p = 0;
           var q = 0;
           var A = [];
           while (q < S.length) {
             splitter.lastIndex = SUPPORTS_Y ? q : 0;
             var z = regexpExecAbstract(splitter, SUPPORTS_Y ? S : S.slice(q));
             var e;
             if (
               z === null ||
               (e = min$2(toLength(splitter.lastIndex + (SUPPORTS_Y ? 0 : q)), S.length)) === p
             ) {
               q = advanceStringIndex(S, q, unicodeMatching);
             } else {
               A.push(S.slice(p, q));
               if (A.length === lim) return A;
               for (var i = 1; i <= z.length - 1; i++) {
                 A.push(z[i]);
                 if (A.length === lim) return A;
               }
               q = p = e;
             }
           }
           A.push(S.slice(p));
           return A;
         }
       ];
     }, !SUPPORTS_Y);
  
     // iterable DOM collections
     // flag - `iterable` interface - 'entries', 'keys', 'values', 'forEach' methods
     var domIterables = {
       CSSRuleList: 0,
       CSSStyleDeclaration: 0,
       CSSValueList: 0,
       ClientRectList: 0,
       DOMRectList: 0,
       DOMStringList: 0,
       DOMTokenList: 1,
       DataTransferItemList: 0,
       FileList: 0,
       HTMLAllCollection: 0,
       HTMLCollection: 0,
       HTMLFormElement: 0,
       HTMLSelectElement: 0,
       MediaList: 0,
       MimeTypeArray: 0,
       NamedNodeMap: 0,
       NodeList: 1,
       PaintRequestList: 0,
       Plugin: 0,
       PluginArray: 0,
       SVGLengthList: 0,
       SVGNumberList: 0,
       SVGPathSegList: 0,
       SVGPointList: 0,
       SVGStringList: 0,
       SVGTransformList: 0,
       SourceBufferList: 0,
       StyleSheetList: 0,
       TextTrackCueList: 0,
       TextTrackList: 0,
       TouchList: 0
     };
  
     var $forEach$1 = arrayIteration.forEach;
  
  
     // `Array.prototype.forEach` method implementation
     // https://tc39.github.io/ecma262/#sec-array.prototype.foreach
     var arrayForEach = sloppyArrayMethod('forEach') ? function forEach(callbackfn /* , thisArg */) {
       return $forEach$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
     } : [].forEach;
  
     for (var COLLECTION_NAME in domIterables) {
       var Collection = global_1[COLLECTION_NAME];
       var CollectionPrototype = Collection && Collection.prototype;
       // some Chrome versions have non-configurable methods on DOMTokenList
       if (CollectionPrototype && CollectionPrototype.forEach !== arrayForEach) try {
         hide(CollectionPrototype, 'forEach', arrayForEach);
       } catch (error) {
         CollectionPrototype.forEach = arrayForEach;
       }
     }
  
     var ITERATOR$2 = wellKnownSymbol('iterator');
     var TO_STRING_TAG$3 = wellKnownSymbol('toStringTag');
     var ArrayValues = es_array_iterator.values;
  
     for (var COLLECTION_NAME$1 in domIterables) {
       var Collection$1 = global_1[COLLECTION_NAME$1];
       var CollectionPrototype$1 = Collection$1 && Collection$1.prototype;
       if (CollectionPrototype$1) {
         // some Chrome versions have non-configurable methods on DOMTokenList
         if (CollectionPrototype$1[ITERATOR$2] !== ArrayValues) try {
           hide(CollectionPrototype$1, ITERATOR$2, ArrayValues);
         } catch (error) {
           CollectionPrototype$1[ITERATOR$2] = ArrayValues;
         }
         if (!CollectionPrototype$1[TO_STRING_TAG$3]) hide(CollectionPrototype$1, TO_STRING_TAG$3, COLLECTION_NAME$1);
         if (domIterables[COLLECTION_NAME$1]) for (var METHOD_NAME in es_array_iterator) {
           // some Chrome versions have non-configurable methods on DOMTokenList
           if (CollectionPrototype$1[METHOD_NAME] !== es_array_iterator[METHOD_NAME]) try {
             hide(CollectionPrototype$1, METHOD_NAME, es_array_iterator[METHOD_NAME]);
           } catch (error) {
             CollectionPrototype$1[METHOD_NAME] = es_array_iterator[METHOD_NAME];
           }
         }
       }
     }
  
     var VirtualScroll =
     /*#__PURE__*/
     function () {
       function VirtualScroll(options) {
         var _this = this;
  
         _classCallCheck(this, VirtualScroll);
  
         this.rows = options.rows;
         this.scrollEl = options.scrollEl;
         this.contentEl = options.contentEl;
         this.callback = options.callback;
         this.cache = {};
         this.scrollTop = this.scrollEl.scrollTop;
         this.initDOM(this.rows);
         this.scrollEl.scrollTop = this.scrollTop;
         this.lastCluster = 0;
  
         var onScroll = function onScroll() {
           if (_this.lastCluster !== (_this.lastCluster = _this.getNum())) {
             _this.initDOM(_this.rows);
  
             _this.callback();
           }
         };
  
         this.scrollEl.addEventListener('scroll', onScroll, false);
  
         this.destroy = function () {
           _this.contentEl.innerHtml = '';
  
           _this.scrollEl.removeEventListener('scroll', onScroll, false);
         };
       }
  
       _createClass(VirtualScroll, [{
         key: "initDOM",
         value: function initDOM(rows) {
           if (typeof this.clusterHeight === 'undefined') {
             this.cache.scrollTop = this.scrollEl.scrollTop;
             this.cache.data = this.contentEl.innerHTML = rows[0] + rows[0] + rows[0];
             this.getRowsHeight(rows);
           }
  
           var data = this.initData(rows, this.getNum());
           var thisRows = data.rows.join('');
           var dataChanged = this.checkChanges('data', thisRows);
           var topOffsetChanged = this.checkChanges('top', data.topOffset);
           var bottomOffsetChanged = this.checkChanges('bottom', data.bottomOffset);
           var html = [];
  
           if (dataChanged && topOffsetChanged) {
             if (data.topOffset) {
               html.push(this.getExtra('top', data.topOffset));
             }
  
             html.push(thisRows);
  
             if (data.bottomOffset) {
               html.push(this.getExtra('bottom', data.bottomOffset));
             }
  
             this.contentEl.innerHTML = html.join('');
           } else if (bottomOffsetChanged) {
             this.contentEl.lastChild.style.height = "".concat(data.bottomOffset, "px");
           }
         }
       }, {
         key: "getRowsHeight",
         value: function getRowsHeight() {
           if (typeof this.itemHeight === 'undefined') {
             var nodes = this.contentEl.children;
             var node = nodes[Math.floor(nodes.length / 2)];
             this.itemHeight = node.offsetHeight;
           }
  
           this.blockHeight = this.itemHeight * Constants.BLOCK_ROWS;
           this.clusterRows = Constants.BLOCK_ROWS * Constants.CLUSTER_BLOCKS;
           this.clusterHeight = this.blockHeight * Constants.CLUSTER_BLOCKS;
         }
       }, {
         key: "getNum",
         value: function getNum() {
           this.scrollTop = this.scrollEl.scrollTop;
           return Math.floor(this.scrollTop / (this.clusterHeight - this.blockHeight)) || 0;
         }
       }, {
         key: "initData",
         value: function initData(rows, num) {
           if (rows.length < Constants.BLOCK_ROWS) {
             return {
               topOffset: 0,
               bottomOffset: 0,
               rowsAbove: 0,
               rows: rows
             };
           }
  
           var start = Math.max((this.clusterRows - Constants.BLOCK_ROWS) * num, 0);
           var end = start + this.clusterRows;
           var topOffset = Math.max(start * this.itemHeight, 0);
           var bottomOffset = Math.max((rows.length - end) * this.itemHeight, 0);
           var thisRows = [];
           var rowsAbove = start;
  
           if (topOffset < 1) {
             rowsAbove++;
           }
  
           for (var i = start; i < end; i++) {
             rows[i] && thisRows.push(rows[i]);
           }
  
           this.dataStart = start;
           this.dataEnd = end;
           return {
             topOffset: topOffset,
             bottomOffset: bottomOffset,
             rowsAbove: rowsAbove,
             rows: thisRows
           };
         }
       }, {
         key: "checkChanges",
         value: function checkChanges(type, value) {
           var changed = value !== this.cache[type];
           this.cache[type] = value;
           return changed;
         }
       }, {
         key: "getExtra",
         value: function getExtra(className, height) {
           var tag = document.createElement('li');
           tag.className = "virtual-scroll-".concat(className);
  
           if (height) {
             tag.style.height = "".concat(height, "px");
           }
  
           return tag.outerHTML;
         }
       }]);
  
       return VirtualScroll;
     }();
  
     var max$2 = Math.max;
     var min$3 = Math.min;
     var floor$1 = Math.floor;
     var SUBSTITUTION_SYMBOLS = /\$([$&'`]|\d\d?|<[^>]*>)/g;
     var SUBSTITUTION_SYMBOLS_NO_NAMED = /\$([$&'`]|\d\d?)/g;
  
     var maybeToString = function (it) {
       return it === undefined ? it : String(it);
     };
  
     // @@replace logic
     fixRegexpWellKnownSymbolLogic('replace', 2, function (REPLACE, nativeReplace, maybeCallNative) {
       return [
         // `String.prototype.replace` method
         // https://tc39.github.io/ecma262/#sec-string.prototype.replace
         function replace(searchValue, replaceValue) {
           var O = requireObjectCoercible(this);
           var replacer = searchValue == undefined ? undefined : searchValue[REPLACE];
           return replacer !== undefined
             ? replacer.call(searchValue, O, replaceValue)
             : nativeReplace.call(String(O), searchValue, replaceValue);
         },
         // `RegExp.prototype[@@replace]` method
         // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@replace
         function (regexp, replaceValue) {
           var res = maybeCallNative(nativeReplace, regexp, this, replaceValue);
           if (res.done) return res.value;
  
           var rx = anObject(regexp);
           var S = String(this);
  
           var functionalReplace = typeof replaceValue === 'function';
           if (!functionalReplace) replaceValue = String(replaceValue);
  
           var global = rx.global;
           if (global) {
             var fullUnicode = rx.unicode;
             rx.lastIndex = 0;
           }
           var results = [];
           while (true) {
             var result = regexpExecAbstract(rx, S);
             if (result === null) break;
  
             results.push(result);
             if (!global) break;
  
             var matchStr = String(result[0]);
             if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);
           }
  
           var accumulatedResult = '';
           var nextSourcePosition = 0;
           for (var i = 0; i < results.length; i++) {
             result = results[i];
  
             var matched = String(result[0]);
             var position = max$2(min$3(toInteger(result.index), S.length), 0);
             var captures = [];
             // NOTE: This is equivalent to
             //   captures = result.slice(1).map(maybeToString)
             // but for some reason `nativeSlice.call(result, 1, result.length)` (called in
             // the slice polyfill when slicing native arrays) "doesn't work" in safari 9 and
             // causes a crash (https://pastebin.com/N21QzeQA) when trying to debug it.
             for (var j = 1; j < result.length; j++) captures.push(maybeToString(result[j]));
             var namedCaptures = result.groups;
             if (functionalReplace) {
               var replacerArgs = [matched].concat(captures, position, S);
               if (namedCaptures !== undefined) replacerArgs.push(namedCaptures);
               var replacement = String(replaceValue.apply(undefined, replacerArgs));
             } else {
               replacement = getSubstitution(matched, S, position, captures, namedCaptures, replaceValue);
             }
             if (position >= nextSourcePosition) {
               accumulatedResult += S.slice(nextSourcePosition, position) + replacement;
               nextSourcePosition = position + matched.length;
             }
           }
           return accumulatedResult + S.slice(nextSourcePosition);
         }
       ];
  
       // https://tc39.github.io/ecma262/#sec-getsubstitution
       function getSubstitution(matched, str, position, captures, namedCaptures, replacement) {
         var tailPos = position + matched.length;
         var m = captures.length;
         var symbols = SUBSTITUTION_SYMBOLS_NO_NAMED;
         if (namedCaptures !== undefined) {
           namedCaptures = toObject(namedCaptures);
           symbols = SUBSTITUTION_SYMBOLS;
         }
         return nativeReplace.call(replacement, symbols, function (match, ch) {
           var capture;
           switch (ch.charAt(0)) {
             case '$': return '$';
             case '&': return matched;
             case '`': return str.slice(0, position);
             case "'": return str.slice(tailPos);
             case '<':
               capture = namedCaptures[ch.slice(1, -1)];
               break;
             default: // \d\d?
               var n = +ch;
               if (n === 0) return match;
               if (n > m) {
                 var f = floor$1(n / 10);
                 if (f === 0) return match;
                 if (f <= m) return captures[f - 1] === undefined ? ch.charAt(1) : captures[f - 1] + ch.charAt(1);
                 return match;
               }
               capture = captures[n - 1];
           }
           return capture === undefined ? '' : capture;
         });
       }
     });
  
     var compareObjects = function compareObjects(objectA, objectB, compareLength) {
       var aKeys = Object.keys(objectA);
       var bKeys = Object.keys(objectB);
  
       if (compareLength && aKeys.length !== bKeys.length) {
         return false;
       }
  
       for (var _i = 0, _aKeys = aKeys; _i < _aKeys.length; _i++) {
         var key = _aKeys[_i];
  
         if (bKeys.includes(key) && objectA[key] !== objectB[key]) {
           return false;
         }
       }
  
       return true;
     };
  
     var removeDiacritics = function removeDiacritics(str) {
       if (str.normalize) {
         return str.normalize('NFD').replace(/[\u0300-\u036F]/g, '');
       }
  
       var defaultDiacriticsRemovalMap = [{
         'base': 'A',
         'letters': /[\u0041\u24B6\uFF21\u00C0\u00C1\u00C2\u1EA6\u1EA4\u1EAA\u1EA8\u00C3\u0100\u0102\u1EB0\u1EAE\u1EB4\u1EB2\u0226\u01E0\u00C4\u01DE\u1EA2\u00C5\u01FA\u01CD\u0200\u0202\u1EA0\u1EAC\u1EB6\u1E00\u0104\u023A\u2C6F]/g
       }, {
         'base': 'AA',
         'letters': /[\uA732]/g
       }, {
         'base': 'AE',
         'letters': /[\u00C6\u01FC\u01E2]/g
       }, {
         'base': 'AO',
         'letters': /[\uA734]/g
       }, {
         'base': 'AU',
         'letters': /[\uA736]/g
       }, {
         'base': 'AV',
         'letters': /[\uA738\uA73A]/g
       }, {
         'base': 'AY',
         'letters': /[\uA73C]/g
       }, {
         'base': 'B',
         'letters': /[\u0042\u24B7\uFF22\u1E02\u1E04\u1E06\u0243\u0182\u0181]/g
       }, {
         'base': 'C',
         'letters': /[\u0043\u24B8\uFF23\u0106\u0108\u010A\u010C\u00C7\u1E08\u0187\u023B\uA73E]/g
       }, {
         'base': 'D',
         'letters': /[\u0044\u24B9\uFF24\u1E0A\u010E\u1E0C\u1E10\u1E12\u1E0E\u0110\u018B\u018A\u0189\uA779]/g
       }, {
         'base': 'DZ',
         'letters': /[\u01F1\u01C4]/g
       }, {
         'base': 'Dz',
         'letters': /[\u01F2\u01C5]/g
       }, {
         'base': 'E',
         'letters': /[\u0045\u24BA\uFF25\u00C8\u00C9\u00CA\u1EC0\u1EBE\u1EC4\u1EC2\u1EBC\u0112\u1E14\u1E16\u0114\u0116\u00CB\u1EBA\u011A\u0204\u0206\u1EB8\u1EC6\u0228\u1E1C\u0118\u1E18\u1E1A\u0190\u018E]/g
       }, {
         'base': 'F',
         'letters': /[\u0046\u24BB\uFF26\u1E1E\u0191\uA77B]/g
       }, {
         'base': 'G',
         'letters': /[\u0047\u24BC\uFF27\u01F4\u011C\u1E20\u011E\u0120\u01E6\u0122\u01E4\u0193\uA7A0\uA77D\uA77E]/g
       }, {
         'base': 'H',
         'letters': /[\u0048\u24BD\uFF28\u0124\u1E22\u1E26\u021E\u1E24\u1E28\u1E2A\u0126\u2C67\u2C75\uA78D]/g
       }, {
         'base': 'I',
         'letters': /[\u0049\u24BE\uFF29\u00CC\u00CD\u00CE\u0128\u012A\u012C\u0130\u00CF\u1E2E\u1EC8\u01CF\u0208\u020A\u1ECA\u012E\u1E2C\u0197]/g
       }, {
         'base': 'J',
         'letters': /[\u004A\u24BF\uFF2A\u0134\u0248]/g
       }, {
         'base': 'K',
         'letters': /[\u004B\u24C0\uFF2B\u1E30\u01E8\u1E32\u0136\u1E34\u0198\u2C69\uA740\uA742\uA744\uA7A2]/g
       }, {
         'base': 'L',
         'letters': /[\u004C\u24C1\uFF2C\u013F\u0139\u013D\u1E36\u1E38\u013B\u1E3C\u1E3A\u0141\u023D\u2C62\u2C60\uA748\uA746\uA780]/g
       }, {
         'base': 'LJ',
         'letters': /[\u01C7]/g
       }, {
         'base': 'Lj',
         'letters': /[\u01C8]/g
       }, {
         'base': 'M',
         'letters': /[\u004D\u24C2\uFF2D\u1E3E\u1E40\u1E42\u2C6E\u019C]/g
       }, {
         'base': 'N',
         'letters': /[\u004E\u24C3\uFF2E\u01F8\u0143\u00D1\u1E44\u0147\u1E46\u0145\u1E4A\u1E48\u0220\u019D\uA790\uA7A4]/g
       }, {
         'base': 'NJ',
         'letters': /[\u01CA]/g
       }, {
         'base': 'Nj',
         'letters': /[\u01CB]/g
       }, {
         'base': 'O',
         'letters': /[\u004F\u24C4\uFF2F\u00D2\u00D3\u00D4\u1ED2\u1ED0\u1ED6\u1ED4\u00D5\u1E4C\u022C\u1E4E\u014C\u1E50\u1E52\u014E\u022E\u0230\u00D6\u022A\u1ECE\u0150\u01D1\u020C\u020E\u01A0\u1EDC\u1EDA\u1EE0\u1EDE\u1EE2\u1ECC\u1ED8\u01EA\u01EC\u00D8\u01FE\u0186\u019F\uA74A\uA74C]/g
       }, {
         'base': 'OI',
         'letters': /[\u01A2]/g
       }, {
         'base': 'OO',
         'letters': /[\uA74E]/g
       }, {
         'base': 'OU',
         'letters': /[\u0222]/g
       }, {
         'base': 'P',
         'letters': /[\u0050\u24C5\uFF30\u1E54\u1E56\u01A4\u2C63\uA750\uA752\uA754]/g
       }, {
         'base': 'Q',
         'letters': /[\u0051\u24C6\uFF31\uA756\uA758\u024A]/g
       }, {
         'base': 'R',
         'letters': /[\u0052\u24C7\uFF32\u0154\u1E58\u0158\u0210\u0212\u1E5A\u1E5C\u0156\u1E5E\u024C\u2C64\uA75A\uA7A6\uA782]/g
       }, {
         'base': 'S',
         'letters': /[\u0053\u24C8\uFF33\u1E9E\u015A\u1E64\u015C\u1E60\u0160\u1E66\u1E62\u1E68\u0218\u015E\u2C7E\uA7A8\uA784]/g
       }, {
         'base': 'T',
         'letters': /[\u0054\u24C9\uFF34\u1E6A\u0164\u1E6C\u021A\u0162\u1E70\u1E6E\u0166\u01AC\u01AE\u023E\uA786]/g
       }, {
         'base': 'TZ',
         'letters': /[\uA728]/g
       }, {
         'base': 'U',
         'letters': /[\u0055\u24CA\uFF35\u00D9\u00DA\u00DB\u0168\u1E78\u016A\u1E7A\u016C\u00DC\u01DB\u01D7\u01D5\u01D9\u1EE6\u016E\u0170\u01D3\u0214\u0216\u01AF\u1EEA\u1EE8\u1EEE\u1EEC\u1EF0\u1EE4\u1E72\u0172\u1E76\u1E74\u0244]/g
       }, {
         'base': 'V',
         'letters': /[\u0056\u24CB\uFF36\u1E7C\u1E7E\u01B2\uA75E\u0245]/g
       }, {
         'base': 'VY',
         'letters': /[\uA760]/g
       }, {
         'base': 'W',
         'letters': /[\u0057\u24CC\uFF37\u1E80\u1E82\u0174\u1E86\u1E84\u1E88\u2C72]/g
       }, {
         'base': 'X',
         'letters': /[\u0058\u24CD\uFF38\u1E8A\u1E8C]/g
       }, {
         'base': 'Y',
         'letters': /[\u0059\u24CE\uFF39\u1EF2\u00DD\u0176\u1EF8\u0232\u1E8E\u0178\u1EF6\u1EF4\u01B3\u024E\u1EFE]/g
       }, {
         'base': 'Z',
         'letters': /[\u005A\u24CF\uFF3A\u0179\u1E90\u017B\u017D\u1E92\u1E94\u01B5\u0224\u2C7F\u2C6B\uA762]/g
       }, {
         'base': 'a',
         'letters': /[\u0061\u24D0\uFF41\u1E9A\u00E0\u00E1\u00E2\u1EA7\u1EA5\u1EAB\u1EA9\u00E3\u0101\u0103\u1EB1\u1EAF\u1EB5\u1EB3\u0227\u01E1\u00E4\u01DF\u1EA3\u00E5\u01FB\u01CE\u0201\u0203\u1EA1\u1EAD\u1EB7\u1E01\u0105\u2C65\u0250]/g
       }, {
         'base': 'aa',
         'letters': /[\uA733]/g
       }, {
         'base': 'ae',
         'letters': /[\u00E6\u01FD\u01E3]/g
       }, {
         'base': 'ao',
         'letters': /[\uA735]/g
       }, {
         'base': 'au',
         'letters': /[\uA737]/g
       }, {
         'base': 'av',
         'letters': /[\uA739\uA73B]/g
       }, {
         'base': 'ay',
         'letters': /[\uA73D]/g
       }, {
         'base': 'b',
         'letters': /[\u0062\u24D1\uFF42\u1E03\u1E05\u1E07\u0180\u0183\u0253]/g
       }, {
         'base': 'c',
         'letters': /[\u0063\u24D2\uFF43\u0107\u0109\u010B\u010D\u00E7\u1E09\u0188\u023C\uA73F\u2184]/g
       }, {
         'base': 'd',
         'letters': /[\u0064\u24D3\uFF44\u1E0B\u010F\u1E0D\u1E11\u1E13\u1E0F\u0111\u018C\u0256\u0257\uA77A]/g
       }, {
         'base': 'dz',
         'letters': /[\u01F3\u01C6]/g
       }, {
         'base': 'e',
         'letters': /[\u0065\u24D4\uFF45\u00E8\u00E9\u00EA\u1EC1\u1EBF\u1EC5\u1EC3\u1EBD\u0113\u1E15\u1E17\u0115\u0117\u00EB\u1EBB\u011B\u0205\u0207\u1EB9\u1EC7\u0229\u1E1D\u0119\u1E19\u1E1B\u0247\u025B\u01DD]/g
       }, {
         'base': 'f',
         'letters': /[\u0066\u24D5\uFF46\u1E1F\u0192\uA77C]/g
       }, {
         'base': 'g',
         'letters': /[\u0067\u24D6\uFF47\u01F5\u011D\u1E21\u011F\u0121\u01E7\u0123\u01E5\u0260\uA7A1\u1D79\uA77F]/g
       }, {
         'base': 'h',
         'letters': /[\u0068\u24D7\uFF48\u0125\u1E23\u1E27\u021F\u1E25\u1E29\u1E2B\u1E96\u0127\u2C68\u2C76\u0265]/g
       }, {
         'base': 'hv',
         'letters': /[\u0195]/g
       }, {
         'base': 'i',
         'letters': /[\u0069\u24D8\uFF49\u00EC\u00ED\u00EE\u0129\u012B\u012D\u00EF\u1E2F\u1EC9\u01D0\u0209\u020B\u1ECB\u012F\u1E2D\u0268\u0131]/g
       }, {
         'base': 'j',
         'letters': /[\u006A\u24D9\uFF4A\u0135\u01F0\u0249]/g
       }, {
         'base': 'k',
         'letters': /[\u006B\u24DA\uFF4B\u1E31\u01E9\u1E33\u0137\u1E35\u0199\u2C6A\uA741\uA743\uA745\uA7A3]/g
       }, {
         'base': 'l',
         'letters': /[\u006C\u24DB\uFF4C\u0140\u013A\u013E\u1E37\u1E39\u013C\u1E3D\u1E3B\u017F\u0142\u019A\u026B\u2C61\uA749\uA781\uA747]/g
       }, {
         'base': 'lj',
         'letters': /[\u01C9]/g
       }, {
         'base': 'm',
         'letters': /[\u006D\u24DC\uFF4D\u1E3F\u1E41\u1E43\u0271\u026F]/g
       }, {
         'base': 'n',
         'letters': /[\u006E\u24DD\uFF4E\u01F9\u0144\u00F1\u1E45\u0148\u1E47\u0146\u1E4B\u1E49\u019E\u0272\u0149\uA791\uA7A5]/g
       }, {
         'base': 'nj',
         'letters': /[\u01CC]/g
       }, {
         'base': 'o',
         'letters': /[\u006F\u24DE\uFF4F\u00F2\u00F3\u00F4\u1ED3\u1ED1\u1ED7\u1ED5\u00F5\u1E4D\u022D\u1E4F\u014D\u1E51\u1E53\u014F\u022F\u0231\u00F6\u022B\u1ECF\u0151\u01D2\u020D\u020F\u01A1\u1EDD\u1EDB\u1EE1\u1EDF\u1EE3\u1ECD\u1ED9\u01EB\u01ED\u00F8\u01FF\u0254\uA74B\uA74D\u0275]/g
       }, {
         'base': 'oi',
         'letters': /[\u01A3]/g
       }, {
         'base': 'ou',
         'letters': /[\u0223]/g
       }, {
         'base': 'oo',
         'letters': /[\uA74F]/g
       }, {
         'base': 'p',
         'letters': /[\u0070\u24DF\uFF50\u1E55\u1E57\u01A5\u1D7D\uA751\uA753\uA755]/g
       }, {
         'base': 'q',
         'letters': /[\u0071\u24E0\uFF51\u024B\uA757\uA759]/g
       }, {
         'base': 'r',
         'letters': /[\u0072\u24E1\uFF52\u0155\u1E59\u0159\u0211\u0213\u1E5B\u1E5D\u0157\u1E5F\u024D\u027D\uA75B\uA7A7\uA783]/g
       }, {
         'base': 's',
         'letters': /[\u0073\u24E2\uFF53\u00DF\u015B\u1E65\u015D\u1E61\u0161\u1E67\u1E63\u1E69\u0219\u015F\u023F\uA7A9\uA785\u1E9B]/g
       }, {
         'base': 't',
         'letters': /[\u0074\u24E3\uFF54\u1E6B\u1E97\u0165\u1E6D\u021B\u0163\u1E71\u1E6F\u0167\u01AD\u0288\u2C66\uA787]/g
       }, {
         'base': 'tz',
         'letters': /[\uA729]/g
       }, {
         'base': 'u',
         'letters': /[\u0075\u24E4\uFF55\u00F9\u00FA\u00FB\u0169\u1E79\u016B\u1E7B\u016D\u00FC\u01DC\u01D8\u01D6\u01DA\u1EE7\u016F\u0171\u01D4\u0215\u0217\u01B0\u1EEB\u1EE9\u1EEF\u1EED\u1EF1\u1EE5\u1E73\u0173\u1E77\u1E75\u0289]/g
       }, {
         'base': 'v',
         'letters': /[\u0076\u24E5\uFF56\u1E7D\u1E7F\u028B\uA75F\u028C]/g
       }, {
         'base': 'vy',
         'letters': /[\uA761]/g
       }, {
         'base': 'w',
         'letters': /[\u0077\u24E6\uFF57\u1E81\u1E83\u0175\u1E87\u1E85\u1E98\u1E89\u2C73]/g
       }, {
         'base': 'x',
         'letters': /[\u0078\u24E7\uFF58\u1E8B\u1E8D]/g
       }, {
         'base': 'y',
         'letters': /[\u0079\u24E8\uFF59\u1EF3\u00FD\u0177\u1EF9\u0233\u1E8F\u00FF\u1EF7\u1E99\u1EF5\u01B4\u024F\u1EFF]/g
       }, {
         'base': 'z',
         'letters': /[\u007A\u24E9\uFF5A\u017A\u1E91\u017C\u017E\u1E93\u1E95\u01B6\u0225\u0240\u2C6C\uA763]/g
       }];
       return defaultDiacriticsRemovalMap.reduce(function (string, _ref) {
         var letters = _ref.letters,
             base = _ref.base;
         return string.replace(letters, base);
       }, str);
     };
  
     var setDataKeys = function setDataKeys(data) {
       var total = 0;
       data.forEach(function (row, i) {
         if (row.type === 'optgroup') {
           row._key = "group_".concat(i);
           row.visible = typeof row.visible === 'undefined' ? true : row.visible;
           row.children.forEach(function (child, j) {
             child._key = "option_".concat(i, "_").concat(j);
             child.visible = typeof child.visible === 'undefined' ? true : child.visible;
           });
           total += row.children.length;
         } else {
           row._key = "option_".concat(i);
           row.visible = typeof row.visible === 'undefined' ? true : row.visible;
           total += 1;
         }
       });
       return total;
     };
  
     var findByParam = function findByParam(data, param, value) {
       var _iteratorNormalCompletion = true;
       var _didIteratorError = false;
       var _iteratorError = undefined;
  
       try {
         for (var _iterator = data[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
           var row = _step.value;
  
           if (row[param] === value || row[param] === +row[param] + '' && +row[param] === value) {
             return row;
           }
  
           if (row.type === 'optgroup') {
             var _iteratorNormalCompletion2 = true;
             var _didIteratorError2 = false;
             var _iteratorError2 = undefined;
  
             try {
               for (var _iterator2 = row.children[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
                 var child = _step2.value;
  
                 if (child[param] === value || child[param] === +child[param] + '' && +child[param] === value) {
                   return child;
                 }
               }
             } catch (err) {
               _didIteratorError2 = true;
               _iteratorError2 = err;
             } finally {
               try {
                 if (!_iteratorNormalCompletion2 && _iterator2.return != null) {
                   _iterator2.return();
                 }
               } finally {
                 if (_didIteratorError2) {
                   throw _iteratorError2;
                 }
               }
             }
           }
         }
       } catch (err) {
         _didIteratorError = true;
         _iteratorError = err;
       } finally {
         try {
           if (!_iteratorNormalCompletion && _iterator.return != null) {
             _iterator.return();
           }
         } finally {
           if (_didIteratorError) {
             throw _iteratorError;
           }
         }
       }
     };
  
     var removeUndefined = function removeUndefined(obj) {
       Object.keys(obj).forEach(function (key) {
         return obj[key] === undefined ? delete obj[key] : '';
       });
       return obj;
     };
  
     var getDocumentClickEvent = function getDocumentClickEvent() {
       var id = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
       id = id || "".concat(+new Date()).concat(~~(Math.random() * 1000000));
       return "click.multiple-select-".concat(id);
     };
  
     var MultipleSelect =
     /*#__PURE__*/
     function () {
       function MultipleSelect($el, options) {
         _classCallCheck(this, MultipleSelect);
  
         this.$el = $el;
         this.options = $.extend({}, Constants.DEFAULTS, options);
       }
  
       _createClass(MultipleSelect, [{
         key: "init",
         value: function init() {
           this.initLocale();
           this.initContainer();
           this.initData();
           this.initSelected(true);
           this.initFilter();
           this.initDrop();
           this.initView();
           this.options.onAfterCreate();
         }
       }, {
         key: "initLocale",
         value: function initLocale() {
           if (this.options.locale) {
             var locales = $.fn.multipleSelect.locales;
             var parts = this.options.locale.split(/-|_/);
             parts[0] = parts[0].toLowerCase();
  
             if (parts[1]) {
               parts[1] = parts[1].toUpperCase();
             }
  
             if (locales[this.options.locale]) {
               $.extend(this.options, locales[this.options.locale]);
             } else if (locales[parts.join('-')]) {
               $.extend(this.options, locales[parts.join('-')]);
             } else if (locales[parts[0]]) {
               $.extend(this.options, locales[parts[0]]);
             }
           }
         }
       }, {
         key: "initContainer",
         value: function initContainer() {
           var _this = this;
  
           var el = this.$el[0];
           var name = el.getAttribute('name') || this.options.name || ''; // hide select element
  
           this.$el.hide(); // label element
  
           this.$label = this.$el.closest('label');
  
           if (!this.$label.length && this.$el.attr('id')) {
             this.$label = $("label[for=\"".concat(this.$el.attr('id'), "\"]"));
           }
  
           if (this.$label.find('>input').length) {
             this.$label = null;
           } // single or multiple
  
  
           if (typeof this.options.single === 'undefined') {
             this.options.single = el.getAttribute('multiple') === null;
           } // restore class and title from select element
  
  
           this.$parent = $("\n      <div class=\"ms-parent ".concat(el.getAttribute('class') || '', "\"\n      title=\"").concat(el.getAttribute('title') || '', "\" />\n    ")); // add placeholder to choice button
  
           this.options.placeholder = this.options.placeholder || el.getAttribute('placeholder') || '';
           this.tabIndex = el.getAttribute('tabindex');
           var tabIndex = '';
  
           if (this.tabIndex !== null) {
             this.$el.attr('tabindex', -1);
             tabIndex = this.tabIndex && "tabindex=\"".concat(this.tabIndex, "\"");
           }
  
           this.$choice = $("\n      <button type=\"button\" class=\"ms-choice\"".concat(tabIndex, ">\n      <span class=\"placeholder\">").concat(this.options.placeholder, "</span>\n      ").concat(this.options.showClear ? '<div class="icon-close"></div>' : '', "\n      <div class=\"icon-caret\"></div>\n      </button>\n    ")); // default position is bottom
  
           this.$drop = $("<div class=\"ms-drop ".concat(this.options.position, "\" />"));
           this.$close = this.$choice.find('.icon-close');
  
           if (this.options.dropWidth) {
             this.$drop.css('width', this.options.dropWidth);
           }
  
           this.$el.after(this.$parent);
           this.$parent.append(this.$choice);
           this.$parent.append(this.$drop);
  
           if (el.disabled) {
             this.$choice.addClass('disabled');
           }
  
           this.selectAllName = "data-name=\"selectAll".concat(name, "\"");
           this.selectGroupName = "data-name=\"selectGroup".concat(name, "\"");
           this.selectItemName = "data-name=\"selectItem".concat(name, "\"");
           this.ariaLabel = "aria-label=\"".concat(name, "\"");
  
           if (!this.options.keepOpen) {
             var clickEvent = getDocumentClickEvent(this.$el.attr('id'));
             $(document).off(clickEvent).on(clickEvent, function (e) {
               if ($(e.target)[0] === _this.$choice[0] || $(e.target).parents('.ms-choice')[0] === _this.$choice[0]) {
                 return;
               }
  
               if (($(e.target)[0] === _this.$drop[0] || $(e.target).parents('.ms-drop')[0] !== _this.$drop[0] && e.target !== el) && _this.options.isOpen) {
                 _this.close();
               }
             });
           }
         }
       }, {
         key: "initData",
         value: function initData() {
           var _this2 = this;
  
           var data = [];
  
           if (this.options.data) {
             if (Array.isArray(this.options.data)) {
               this.data = this.options.data.map(function (it) {
                 if (typeof it === 'string' || typeof it === 'number') {
                   return {
                     text: it,
                     value: it
                   };
                 }
  
                 return it;
               });
             } else if (_typeof(this.options.data) === 'object') {
               for (var _i = 0, _Object$entries = Object.entries(this.options.data); _i < _Object$entries.length; _i++) {
                 var _Object$entries$_i = _slicedToArray(_Object$entries[_i], 2),
                     value = _Object$entries$_i[0],
                     text = _Object$entries$_i[1];
  
                 data.push({
                   value: value,
                   text: text
                 });
               }
  
               this.data = data;
             }
           } else {
             $.each(this.$el.children(), function (i, elm) {
               var row = _this2.initRow(i, elm);
  
               if (row) {
                 data.push(_this2.initRow(i, elm));
               }
             });
             this.options.data = data;
             this.data = data;
             this.fromHtml = true;
           }
  
           this.dataTotal = setDataKeys(this.data);
         }
       }, {
         key: "initRow",
         value: function initRow(i, elm, groupDisabled) {
           var _this3 = this;
  
           var row = {};
           var $elm = $(elm);
  
           if ($elm.is('option')) {
             row.type = 'option';
             row.text = this.options.textTemplate($elm);
             row.value = elm.value;
             row.visible = true;
             row.selected = !!elm.selected;
             row.disabled = groupDisabled || elm.disabled;
             row.classes = elm.getAttribute('class') || '';
             row.title = elm.getAttribute('title') || '';
  
             if ($elm.data('value')) {
               row._value = $elm.data('value'); // value for object
             }
  
             if (Object.keys($elm.data()).length) {
               row._data = $elm.data();
             }
  
             return row;
           }
  
           if ($elm.is('optgroup')) {
             row.type = 'optgroup';
             row.label = this.options.labelTemplate($elm);
             row.visible = true;
             row.selected = !!elm.selected;
             row.disabled = elm.disabled;
             row.children = [];
  
             if (Object.keys($elm.data()).length) {
               row._data = $elm.data();
             }
  
             $.each($elm.children(), function (j, elem) {
               row.children.push(_this3.initRow(j, elem, row.disabled));
             });
             return row;
           }
  
           return null;
         }
       }, {
         key: "initSelected",
         value: function initSelected(ignoreTrigger) {
           var selectedTotal = 0;
           var _iteratorNormalCompletion = true;
           var _didIteratorError = false;
           var _iteratorError = undefined;
  
           try {
             for (var _iterator = this.data[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
               var row = _step.value;
  
               if (row.type === 'optgroup') {
                 var selectedCount = row.children.filter(function (child) {
                   return child.selected && !child.disabled && child.visible;
                 }).length;
                 row.selected = selectedCount && selectedCount === row.children.filter(function (child) {
                   return !child.disabled && child.visible;
                 }).length;
                 selectedTotal += selectedCount;
               } else {
                 selectedTotal += row.selected && !row.disabled && row.visible ? 1 : 0;
               }
             }
           } catch (err) {
             _didIteratorError = true;
             _iteratorError = err;
           } finally {
             try {
               if (!_iteratorNormalCompletion && _iterator.return != null) {
                 _iterator.return();
               }
             } finally {
               if (_didIteratorError) {
                 throw _iteratorError;
               }
             }
           }
  
           this.allSelected = this.data.filter(function (row) {
             return row.selected && !row.disabled && row.visible;
           }).length === this.data.filter(function (row) {
             return !row.disabled && row.visible;
           }).length;
  
           if (!ignoreTrigger) {
             if (this.allSelected) {
               this.options.onCheckAll();
             } else if (selectedTotal === 0) {
               this.options.onUncheckAll();
             }
           }
         }
       }, {
         key: "initFilter",
         value: function initFilter() {
           this.filterText = '';
  
           if (this.options.filter || !this.options.filterByDataLength) {
             return;
           }
  
           var length = 0;
           var _iteratorNormalCompletion2 = true;
           var _didIteratorError2 = false;
           var _iteratorError2 = undefined;
  
           try {
             for (var _iterator2 = this.data[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
               var option = _step2.value;
  
               if (option.type === 'optgroup') {
                 length += option.children.length;
               } else {
                 length += 1;
               }
             }
           } catch (err) {
             _didIteratorError2 = true;
             _iteratorError2 = err;
           } finally {
             try {
               if (!_iteratorNormalCompletion2 && _iterator2.return != null) {
                 _iterator2.return();
               }
             } finally {
               if (_didIteratorError2) {
                 throw _iteratorError2;
               }
             }
           }
  
           this.options.filter = length > this.options.filterByDataLength;
         }
       }, {
         key: "initDrop",
         value: function initDrop() {
           var _this4 = this;
  
           this.initList();
           this.update(true);
  
           if (this.options.isOpen) {
             setTimeout(function () {
               _this4.open();
             }, 50);
           }
  
           if (this.options.openOnHover) {
             this.$parent.hover(function () {
               _this4.open();
             }, function () {
               _this4.close();
             });
           }
         }
       }, {
         key: "initList",
         value: function initList() {
           var html = [];
  
           if (this.options.filter) {
             html.push("\n        <div class=\"ms-search\">\n          <input type=\"text\" autocomplete=\"off\" autocorrect=\"off\"\n            autocapitalize=\"off\" spellcheck=\"false\"\n            placeholder=\"".concat(this.options.filterPlaceholder, "\">\n        </div>\n      "));
           }
  
           html.push('<ul></ul>');
           this.$drop.html(html.join(''));
           this.$ul = this.$drop.find('>ul');
           this.initListItems();
         }
       }, {
         key: "initListItems",
         value: function initListItems() {
           var _this5 = this;
  
           var rows = this.getListRows();
           var offset = 0;
  
           if (this.options.selectAll && !this.options.single) {
             offset = -1;
           }
  
           if (rows.length > Constants.BLOCK_ROWS * Constants.CLUSTER_BLOCKS) {
             if (this.virtualScroll) {
               this.virtualScroll.destroy();
             }
  
             var dropVisible = this.$drop.is(':visible');
  
             if (!dropVisible) {
               this.$drop.css('left', -10000).show();
             }
  
             var updateDataOffset = function updateDataOffset() {
               _this5.updateDataStart = _this5.virtualScroll.dataStart + offset;
               _this5.updateDataEnd = _this5.virtualScroll.dataEnd + offset;
  
               if (_this5.updateDataStart < 0) {
                 _this5.updateDataStart = 0;
               }
  
               if (_this5.updateDataEnd > _this5.data.length) {
                 _this5.updateDataEnd = _this5.data.length;
               }
             };
  
             this.virtualScroll = new VirtualScroll({
               rows: rows,
               scrollEl: this.$ul[0],
               contentEl: this.$ul[0],
               callback: function callback() {
                 updateDataOffset();
  
                 _this5.events();
               }
             });
             updateDataOffset();
  
             if (!dropVisible) {
               this.$drop.css('left', 0).hide();
             }
           } else {
             this.$ul.html(rows.join(''));
             this.updateDataStart = 0;
             this.updateDataEnd = this.updateData.length;
             this.virtualScroll = null;
           }
  
           this.events();
         }
       }, {
         key: "getListRows",
         value: function getListRows() {
           var _this6 = this;
  
           var rows = [];
  
           if (this.options.selectAll && !this.options.single) {
             rows.push("\n        <li class=\"ms-select-all\">\n        <label>\n        <input type=\"checkbox\" ".concat(this.selectAllName).concat(this.allSelected ? ' checked="checked"' : '', " />\n        <span>").concat(this.options.formatSelectAll(), "</span>\n        </label>\n        </li>\n      "));
           }
  
           this.updateData = [];
           this.data.forEach(function (row) {
             rows.push.apply(rows, _toConsumableArray(_this6.initListItem(row)));
           });
           rows.push("<li class=\"ms-no-results\">".concat(this.options.formatNoMatchesFound(), "</li>"));
           return rows;
         }
       }, {
         key: "initListItem",
         value: function initListItem(row) {
           var _this7 = this;
  
           var level = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
           var title = row.title ? "title=\"".concat(row.title, "\"") : '';
           var multiple = this.options.multiple ? 'multiple' : '';
           var type = this.options.single ? 'radio' : 'checkbox';
           var classes = '';
  
           if (!row.visible) {
             return [];
           }
  
           this.updateData.push(row);
  
           if (this.options.single && !this.options.singleRadio) {
             classes = 'hide-radio ';
           }
  
           if (row.selected) {
             classes += 'selected ';
           }
  
           if (row.type === 'optgroup') {
             var _customStyle = this.options.styler(row);
  
             var _style = _customStyle ? "style=\"".concat(_customStyle, "\"") : '';
  
             var html = [];
             var group = this.options.hideOptgroupCheckboxes || this.options.single ? "<span ".concat(this.selectGroupName, " data-key=\"").concat(row._key, "\"></span>") : "<input type=\"checkbox\"\n          ".concat(this.selectGroupName, "\n          data-key=\"").concat(row._key, "\"\n          ").concat(row.selected ? ' checked="checked"' : '', "\n          ").concat(row.disabled ? ' disabled="disabled"' : '', "\n        >");
  
             if (!classes.includes('hide-radio') && (this.options.hideOptgroupCheckboxes || this.options.single)) {
               classes += 'hide-radio ';
             }
  
             html.push("\n        <li class=\"group ".concat(classes, "\" ").concat(_style, ">\n        <label class=\"optgroup").concat(this.options.single || row.disabled ? ' disabled' : '', "\">\n        ").concat(group).concat(row.label, "\n        </label>\n        </li>\n      "));
             row.children.forEach(function (child) {
               html.push.apply(html, _toConsumableArray(_this7.initListItem(child, 1)));
             });
             return html;
           }
  
           var customStyle = this.options.styler(row);
           var style = customStyle ? "style=\"".concat(customStyle, "\"") : '';
           classes += row.classes || '';
  
           if (level && this.options.single) {
             classes += "option-level-".concat(level, " ");
           }
  
           return ["\n      <li class=\"".concat(multiple, " ").concat(classes, "\" ").concat(title, " ").concat(style, ">\n      <label for=\"").concat(row.value.toLowerCase().replace(/\s+/g, '') + '_val', "\"\n class=\"").concat(row.disabled ? 'disabled' : '', "\">\n      <input type=\"").concat(type, "\"\n        value=\"").concat(row.value, "\"\n  id=\"").concat(row.value.toLowerCase().replace(/\s+/g, '') + '_val', "\"\n  aria-label=\"").concat(row.value, "\"\n       data-key=\"").concat(row._key, "\"\n        ").concat(this.selectItemName, "\n        ").concat(row.selected ? ' checked="checked"' : '', "\n        ").concat(row.disabled ? ' disabled="disabled"' : '', "\n      >\n      <span>").concat(row.text, "</span>\n      </label>\n      </li>\n    ")];
         }
       }, {
         key: "events",
         value: function events() {
           var _this8 = this;
  
           this.$searchInput = this.$drop.find('.ms-search input');
           this.$selectAll = this.$drop.find("input[".concat(this.selectAllName, "]"));
           this.$selectGroups = this.$drop.find("input[".concat(this.selectGroupName, "],span[").concat(this.selectGroupName, "]"));
           this.$selectItems = this.$drop.find("input[".concat(this.selectItemName, "]:enabled"));
           this.$disableItems = this.$drop.find("input[".concat(this.selectItemName, "]:disabled"));
           this.$noResults = this.$drop.find('.ms-no-results');
  
           var toggleOpen = function toggleOpen(e) {
             e.preventDefault();
  
             if ($(e.target).hasClass('icon-close')) {
               return;
             }
  
             _this8[_this8.options.isOpen ? 'close' : 'open']();
           };
  
           if (this.$label && this.$label.length) {
             this.$label.off('click').on('click', function (e) {
               if (e.target.nodeName.toLowerCase() !== 'label') {
                 return;
               }
  
               toggleOpen(e);
  
               if (!_this8.options.filter || !_this8.options.isOpen) {
                 _this8.focus();
               }
  
               e.stopPropagation(); // Causes lost focus otherwise
             });
           }
  
           this.$choice.off('click').on('click', toggleOpen).off('focus').on('focus', this.options.onFocus).off('blur').on('blur', this.options.onBlur);
           this.$parent.off('keydown').on('keydown', function (e) {
             // esc key
             if (e.which === 27 && !_this8.options.keepOpen) {
               _this8.close();
  
               _this8.$choice.focus();
             }
           });
           this.$close.off('click').on('click', function (e) {
             e.preventDefault();
  
             _this8._checkAll(false, true);
  
             _this8.initSelected(false);
  
             _this8.updateSelected();
  
             _this8.update();
  
             _this8.options.onClear();
           });
           this.$searchInput.off('keydown').on('keydown', function (e) {
             // Ensure shift-tab causes lost focus from filter as with clicking away
             if (e.keyCode === 9 && e.shiftKey) {
               _this8.close();
             }
           }).off('keyup').on('keyup', function (e) {
             // enter or space
             // Avoid selecting/deselecting if no choices made
             if (_this8.options.filterAcceptOnEnter && [13, 32].includes(e.which) && _this8.$searchInput.val()) {
               if (_this8.options.single) {
                 var $items = _this8.$selectItems.closest('li').filter(':visible');
  
                 if ($items.length) {
                   _this8.setSelects([$items.first().find("input[".concat(_this8.selectItemName, "]")).val()]);
                 }
               } else {
                 _this8.$selectAll.click();
               }
  
               _this8.close();
  
               _this8.focus();
  
               return;
             }
  
             _this8.filter();
           });
           this.$selectAll.off('click').on('click', function (e) {
             _this8._checkAll($(e.currentTarget).prop('checked'));
           });
           this.$selectGroups.off('click').on('click', function (e) {
             var $this = $(e.currentTarget);
             var checked = $this.prop('checked');
             var group = findByParam(_this8.data, '_key', $this.data('key'));
  
             _this8._checkGroup(group, checked);
  
             _this8.options.onOptgroupClick(removeUndefined({
               label: group.label,
               selected: group.selected,
               data: group._data,
               children: group.children.map(function (child) {
                 return removeUndefined({
                   text: child.text,
                   value: child.value,
                   selected: child.selected,
                   disabled: child.disabled,
                   data: child._data
                 });
               })
             }));
           });
           this.$selectItems.off('click').on('click', function (e) {
             var $this = $(e.currentTarget);
             var checked = $this.prop('checked');
             var option = findByParam(_this8.data, '_key', $this.data('key'));
  
             _this8._check(option, checked);
  
             _this8.options.onClick(removeUndefined({
               text: option.text,
               value: option.value,
               selected: option.selected,
               data: option._data
             }));
  
             if (_this8.options.single && _this8.options.isOpen && !_this8.options.keepOpen) {
               _this8.close();
             }
           });
         }
       }, {
         key: "initView",
         value: function initView() {
           var computedWidth;
  
           if (window.getComputedStyle) {
             computedWidth = window.getComputedStyle(this.$el[0]).width;
  
             if (computedWidth === 'auto') {
               computedWidth = this.$drop.outerWidth() + 20;
             }
           } else {
             computedWidth = this.$el.outerWidth() + 20;
           }
  
           this.$parent.css('width', this.options.width || computedWidth);
           this.$el.show().addClass('ms-offscreen');
         }
       }, {
         key: "open",
         value: function open() {
           if (this.$choice.hasClass('disabled')) {
             return;
           }
  
           this.options.isOpen = true;
           this.$choice.find('>div').addClass('open');
           this.$drop[this.animateMethod('show')](); // fix filter bug: no results show
  
           this.$selectAll.parent().show();
           this.$noResults.hide(); // Fix #77: 'All selected' when no options
  
           if (!this.data.length) {
             this.$selectAll.parent().hide();
             this.$noResults.show();
           }
  
           if (this.options.container) {
             var offset = this.$drop.offset();
             this.$drop.appendTo($(this.options.container));
             this.$drop.offset({
               top: offset.top,
               left: offset.left
             }).css('min-width', 'auto').outerWidth(this.$parent.outerWidth());
           }
  
           var maxHeight = this.options.maxHeight;
  
           if (this.options.maxHeightUnit === 'row') {
             maxHeight = this.$drop.find('>ul>li').first().outerHeight() * this.options.maxHeight;
           }
  
           this.$drop.find('>ul').css('max-height', "".concat(maxHeight, "px"));
           this.$drop.find('.multiple').css('width', "".concat(this.options.multipleWidth, "px"));
  
           if (this.data.length && this.options.filter) {
             this.$searchInput.val('');
             this.$searchInput.focus();
             this.filter(true);
           }
  
           this.options.onOpen();
         }
       }, {
         key: "close",
         value: function close() {
           this.options.isOpen = false;
           this.$choice.find('>div').removeClass('open');
           this.$drop[this.animateMethod('hide')]();
  
           if (this.options.container) {
             this.$parent.append(this.$drop);
             this.$drop.css({
               'top': 'auto',
               'left': 'auto'
             });
           }
  
           this.options.onClose();
         }
       }, {
         key: "animateMethod",
         value: function animateMethod(method) {
           var methods = {
             show: {
               fade: 'fadeIn',
               slide: 'slideDown'
             },
             hide: {
               fade: 'fadeOut',
               slide: 'slideUp'
             }
           };
           return methods[method][this.options.animate] || method;
         }
       }, {
         key: "update",
         value: function update(ignoreTrigger) {
           var valueSelects = this.getSelects();
           var textSelects = this.getSelects('text');
  
           if (this.options.displayValues) {
             textSelects = valueSelects;
           }
  
           var $span = this.$choice.find('>span');
           var sl = valueSelects.length;
           var html = '';
  
           if (sl === 0) {
             $span.addClass('placeholder').html(this.options.placeholder);
           } else if (sl < this.options.minimumCountSelected) {
             html = textSelects.join(this.options.displayDelimiter);
           } else if (this.options.formatAllSelected() && sl === this.dataTotal) {
             html = this.options.formatAllSelected();
           } else if (this.options.ellipsis && sl > this.options.minimumCountSelected) {
             html = "".concat(textSelects.slice(0, this.options.minimumCountSelected).join(this.options.displayDelimiter), "...");
           } else if (this.options.formatCountSelected() && sl > this.options.minimumCountSelected) {
             html = this.options.formatCountSelected(sl, this.dataTotal);
           } else {
             html = textSelects.join(this.options.displayDelimiter);
           }
  
           if (html) {
             $span.removeClass('placeholder').html(html);
           }
  
           if (this.options.displayTitle) {
             $span.prop('title', this.getSelects('text'));
           } // set selects to select
  
  
           this.$el.val(this.getSelects()); // trigger <select> change event
  
           if (!ignoreTrigger) {
             this.$el.trigger('change');
           }
         }
       }, {
         key: "updateSelected",
         value: function updateSelected() {
           for (var i = this.updateDataStart; i < this.updateDataEnd; i++) {
             var row = this.updateData[i];
             this.$drop.find("input[data-key=".concat(row._key, "]")).prop('checked', row.selected).closest('li').toggleClass('selected', row.selected);
           }
  
           var noResult = this.data.filter(function (row) {
             return row.visible;
           }).length === 0;
  
           if (this.$selectAll.length) {
             this.$selectAll.prop('checked', this.allSelected).closest('li').toggle(!noResult);
           }
  
           this.$noResults.toggle(noResult);
  
           if (this.virtualScroll) {
             this.virtualScroll.rows = this.getListRows();
           }
         }
       }, {
         key: "getOptions",
         value: function getOptions() {
           // deep copy and remove data
           var options = $.extend({}, this.options);
           delete options.data;
           return $.extend(true, {}, options);
         }
       }, {
         key: "refreshOptions",
         value: function refreshOptions(options) {
           // If the objects are equivalent then avoid the call of destroy / init methods
           if (compareObjects(this.options, options, true)) {
             return;
           }
  
           this.options = $.extend(this.options, options);
           this.destroy();
           this.init();
         } // value html, or text, default: 'value'
  
       }, {
         key: "getSelects",
         value: function getSelects() {
           var type = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'value';
           var values = [];
           var _iteratorNormalCompletion3 = true;
           var _didIteratorError3 = false;
           var _iteratorError3 = undefined;
  
           try {
             for (var _iterator3 = this.data[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {
               var row = _step3.value;
  
               if (row.type === 'optgroup') {
                 var selectedChildren = row.children.filter(function (child) {
                   return child.selected;
                 });
  
                 if (!selectedChildren.length) {
                   continue;
                 }
  
                 if (type === 'value' || this.options.single) {
                   values.push.apply(values, _toConsumableArray(selectedChildren.map(function (child) {
                     return type === 'value' ? child._value || child[type] : child[type];
                   })));
                 } else {
                   var value = [];
                   value.push('[');
                   value.push(row.label);
                   value.push(": ".concat(selectedChildren.map(function (child) {
                     return child[type];
                   }).join(', ')));
                   value.push(']');
                   values.push(value.join(''));
                 }
               } else if (row.selected) {
                 values.push(type === 'value' ? row._value || row[type] : row[type]);
               }
             }
           } catch (err) {
             _didIteratorError3 = true;
             _iteratorError3 = err;
           } finally {
             try {
               if (!_iteratorNormalCompletion3 && _iterator3.return != null) {
                 _iterator3.return();
               }
             } finally {
               if (_didIteratorError3) {
                 throw _iteratorError3;
               }
             }
           }
  
           return values;
         }
       }, {
         key: "setSelects",
         value: function setSelects(values, ignoreTrigger) {
           var hasChanged = false;
  
           var _setSelects = function _setSelects(rows) {
             var _iteratorNormalCompletion4 = true;
             var _didIteratorError4 = false;
             var _iteratorError4 = undefined;
  
             try {
               for (var _iterator4 = rows[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {
                 var row = _step4.value;
                 var selected = values.includes(row._value || row.value);
  
                 if (!selected && row.value === +row.value + '') {
                   selected = values.includes(+row.value);
                 }
  
                 if (row.selected !== selected) {
                   hasChanged = true;
                 }
  
                 row.selected = selected;
               }
             } catch (err) {
               _didIteratorError4 = true;
               _iteratorError4 = err;
             } finally {
               try {
                 if (!_iteratorNormalCompletion4 && _iterator4.return != null) {
                   _iterator4.return();
                 }
               } finally {
                 if (_didIteratorError4) {
                   throw _iteratorError4;
                 }
               }
             }
           };
  
           var _iteratorNormalCompletion5 = true;
           var _didIteratorError5 = false;
           var _iteratorError5 = undefined;
  
           try {
             for (var _iterator5 = this.data[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {
               var row = _step5.value;
  
               if (row.type === 'optgroup') {
                 _setSelects(row.children);
               } else {
                 _setSelects([row]);
               }
             }
           } catch (err) {
             _didIteratorError5 = true;
             _iteratorError5 = err;
           } finally {
             try {
               if (!_iteratorNormalCompletion5 && _iterator5.return != null) {
                 _iterator5.return();
               }
             } finally {
               if (_didIteratorError5) {
                 throw _iteratorError5;
               }
             }
           }
  
           if (hasChanged) {
             this.initSelected(ignoreTrigger);
             this.updateSelected();
             this.update(ignoreTrigger);
           }
         }
       }, {
         key: "enable",
         value: function enable() {
           this.$choice.removeClass('disabled');
         }
       }, {
         key: "disable",
         value: function disable() {
           this.$choice.addClass('disabled');
         }
       }, {
         key: "check",
         value: function check(value) {
           var option = findByParam(this.data, 'value', value);
  
           if (!option) {
             return;
           }
  
           this._check(option, true);
         }
       }, {
         key: "uncheck",
         value: function uncheck(value) {
           var option = findByParam(this.data, 'value', value);
  
           if (!option) {
             return;
           }
  
           this._check(option, false);
         }
       }, {
         key: "_check",
         value: function _check(option, checked) {
           if (this.options.single) {
             this._checkAll(false, true);
           }
  
           option.selected = checked;
           this.initSelected();
           this.updateSelected();
           this.update();
         }
       }, {
         key: "checkAll",
         value: function checkAll() {
           this._checkAll(true);
         }
       }, {
         key: "uncheckAll",
         value: function uncheckAll() {
           this._checkAll(false);
         }
       }, {
         key: "_checkAll",
         value: function _checkAll(checked, ignoreUpdate) {
           var _iteratorNormalCompletion6 = true;
           var _didIteratorError6 = false;
           var _iteratorError6 = undefined;
  
           try {
             for (var _iterator6 = this.data[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {
               var row = _step6.value;
  
               if (row.type === 'optgroup') {
                 this._checkGroup(row, checked, true);
               } else if (!row.disabled && (ignoreUpdate || row.visible)) {
                 row.selected = checked;
               }
             }
           } catch (err) {
             _didIteratorError6 = true;
             _iteratorError6 = err;
           } finally {
             try {
               if (!_iteratorNormalCompletion6 && _iterator6.return != null) {
                 _iterator6.return();
               }
             } finally {
               if (_didIteratorError6) {
                 throw _iteratorError6;
               }
             }
           }
  
           if (!ignoreUpdate) {
             this.initSelected();
             this.updateSelected();
             this.update();
           }
         }
       }, {
         key: "_checkGroup",
         value: function _checkGroup(group, checked, ignoreUpdate) {
           group.selected = checked;
           group.children.forEach(function (row) {
             if (!row.disabled && (ignoreUpdate || row.visible)) {
               row.selected = checked;
             }
           });
  
           if (!ignoreUpdate) {
             this.initSelected();
             this.updateSelected();
             this.update();
           }
         }
       }, {
         key: "checkInvert",
         value: function checkInvert() {
           if (this.options.single) {
             return;
           }
  
           var _iteratorNormalCompletion7 = true;
           var _didIteratorError7 = false;
           var _iteratorError7 = undefined;
  
           try {
             for (var _iterator7 = this.data[Symbol.iterator](), _step7; !(_iteratorNormalCompletion7 = (_step7 = _iterator7.next()).done); _iteratorNormalCompletion7 = true) {
               var row = _step7.value;
  
               if (row.type === 'optgroup') {
                 var _iteratorNormalCompletion8 = true;
                 var _didIteratorError8 = false;
                 var _iteratorError8 = undefined;
  
                 try {
                   for (var _iterator8 = row.children[Symbol.iterator](), _step8; !(_iteratorNormalCompletion8 = (_step8 = _iterator8.next()).done); _iteratorNormalCompletion8 = true) {
                     var child = _step8.value;
                     child.selected = !child.selected;
                   }
                 } catch (err) {
                   _didIteratorError8 = true;
                   _iteratorError8 = err;
                 } finally {
                   try {
                     if (!_iteratorNormalCompletion8 && _iterator8.return != null) {
                       _iterator8.return();
                     }
                   } finally {
                     if (_didIteratorError8) {
                       throw _iteratorError8;
                     }
                   }
                 }
               } else {
                 row.selected = !row.selected;
               }
             }
           } catch (err) {
             _didIteratorError7 = true;
             _iteratorError7 = err;
           } finally {
             try {
               if (!_iteratorNormalCompletion7 && _iterator7.return != null) {
                 _iterator7.return();
               }
             } finally {
               if (_didIteratorError7) {
                 throw _iteratorError7;
               }
             }
           }
  
           this.initSelected();
           this.updateSelected();
           this.update();
         }
       }, {
         key: "focus",
         value: function focus() {
           this.$choice.focus();
           this.options.onFocus();
         }
       }, {
         key: "blur",
         value: function blur() {
           this.$choice.blur();
           this.options.onBlur();
         }
       }, {
         key: "refresh",
         value: function refresh() {
           this.destroy();
           this.init();
         }
       }, {
         key: "filter",
         value: function filter(ignoreTrigger) {
           var originalText = $.trim(this.$searchInput.val());
           var text = originalText.toLowerCase();
  
           if (this.filterText === text) {
             return;
           }
  
           this.filterText = text;
           var _iteratorNormalCompletion9 = true;
           var _didIteratorError9 = false;
           var _iteratorError9 = undefined;
  
           try {
             for (var _iterator9 = this.data[Symbol.iterator](), _step9; !(_iteratorNormalCompletion9 = (_step9 = _iterator9.next()).done); _iteratorNormalCompletion9 = true) {
               var row = _step9.value;
  
               if (row.type === 'optgroup') {
                 if (this.options.filterGroup) {
                   var visible = this.options.customFilter(removeDiacritics(row.label.toLowerCase()), removeDiacritics(text), row.label, originalText);
                   row.visible = visible;
                   var _iteratorNormalCompletion10 = true;
                   var _didIteratorError10 = false;
                   var _iteratorError10 = undefined;
  
                   try {
                     for (var _iterator10 = row.children[Symbol.iterator](), _step10; !(_iteratorNormalCompletion10 = (_step10 = _iterator10.next()).done); _iteratorNormalCompletion10 = true) {
                       var child = _step10.value;
                       child.visible = visible;
                     }
                   } catch (err) {
                     _didIteratorError10 = true;
                     _iteratorError10 = err;
                   } finally {
                     try {
                       if (!_iteratorNormalCompletion10 && _iterator10.return != null) {
                         _iterator10.return();
                       }
                     } finally {
                       if (_didIteratorError10) {
                         throw _iteratorError10;
                       }
                     }
                   }
                 } else {
                   var _iteratorNormalCompletion11 = true;
                   var _didIteratorError11 = false;
                   var _iteratorError11 = undefined;
  
                   try {
                     for (var _iterator11 = row.children[Symbol.iterator](), _step11; !(_iteratorNormalCompletion11 = (_step11 = _iterator11.next()).done); _iteratorNormalCompletion11 = true) {
                       var _child = _step11.value;
                       _child.visible = this.options.customFilter(removeDiacritics(_child.text.toLowerCase()), removeDiacritics(text), _child.text, originalText);
                     }
                   } catch (err) {
                     _didIteratorError11 = true;
                     _iteratorError11 = err;
                   } finally {
                     try {
                       if (!_iteratorNormalCompletion11 && _iterator11.return != null) {
                         _iterator11.return();
                       }
                     } finally {
                       if (_didIteratorError11) {
                         throw _iteratorError11;
                       }
                     }
                   }
  
                   row.visible = row.children.filter(function (child) {
                     return child.visible;
                   }).length > 0;
                 }
               } else {
                 row.visible = this.options.customFilter(removeDiacritics(row.text.toLowerCase()), removeDiacritics(text), row.text, originalText);
               }
             }
           } catch (err) {
             _didIteratorError9 = true;
             _iteratorError9 = err;
           } finally {
             try {
               if (!_iteratorNormalCompletion9 && _iterator9.return != null) {
                 _iterator9.return();
               }
             } finally {
               if (_didIteratorError9) {
                 throw _iteratorError9;
               }
             }
           }
  
           this.initListItems();
           this.initSelected(ignoreTrigger);
           this.updateSelected();
  
           if (!ignoreTrigger) {
             this.options.onFilter(text);
           }
         }
       }, {
         key: "destroy",
         value: function destroy() {
           if (!this.$parent) {
             return;
           }
  
           this.$el.before(this.$parent).removeClass('ms-offscreen');
  
           if (this.tabIndex !== null) {
             this.$el.attr('tabindex', this.tabIndex);
           }
  
           this.$parent.remove();
  
           if (this.fromHtml) {
             delete this.options.data;
             this.fromHtml = false;
           }
         }
       }]);
  
       return MultipleSelect;
     }();
  
     $.fn.multipleSelect = function (option) {
       for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
         args[_key - 1] = arguments[_key];
       }
  
       var value;
       this.each(function (i, el) {
         var $this = $(el);
         var data = $this.data('multipleSelect');
         var options = $.extend({}, $this.data(), _typeof(option) === 'object' && option);
  
         if (!data) {
           data = new MultipleSelect($this, options);
           $this.data('multipleSelect', data);
         }
  
         if (typeof option === 'string') {
           var _data;
  
           if ($.inArray(option, Constants.METHODS) < 0) {
             throw new Error("Unknown method: ".concat(option));
           }
  
           value = (_data = data)[option].apply(_data, args);
  
           if (option === 'destroy') {
             $this.removeData('multipleSelect');
           }
         } else {
           data.init();
         }
       });
       return typeof value !== 'undefined' ? value : this;
     };
  
     $.fn.multipleSelect.defaults = Constants.DEFAULTS;
     $.fn.multipleSelect.locales = Constants.LOCALES;
     $.fn.multipleSelect.methods = Constants.METHODS;
  
   }));
  