text: const fs = typeof require !== "undefined" && require('fs');
  const crypto = typeof require !== "undefined" && require('crypto');
  
  const all = (arr, fn = Boolean) => arr.every(fn);
  const allEqual = arr => arr.every(val => val === arr[0]);
  const any = (arr, fn = Boolean) => arr.some(fn);
  const approximatelyEqual = (v1, v2, epsilon = 0.001) => Math.abs(v1 - v2) < epsilon;
  const arrayToCSV = (arr, delimiter = ',') =>
    arr
      .map(v => v.map(x => (isNaN(x) ? `"${x.replace(/"/g, '""')}"` : x)).join(delimiter))
      .join('\n');
  const arrayToHtmlList = (arr, listID) =>
    (el => (
      (el = document.querySelector('#' + listID)),
      (el.innerHTML += arr.map(item => `<li>${item}</li>`).join(''))
    ))();
  const ary = (fn, n) => (...args) => fn(...args.slice(0, n));
  const atob = str => Buffer.from(str, 'base64').toString('binary');
  const attempt = (fn, ...args) => {
    try {
      return fn(...args);
    } catch (e) {
      return e instanceof Error ? e : new Error(e);
    }
  };
  const average = (...nums) => nums.reduce((acc, val) => acc + val, 0) / nums.length;
  const averageBy = (arr, fn) =>
    arr.map(typeof fn === 'function' ? fn : val => val[fn]).reduce((acc, val) => acc + val, 0) /
    arr.length;
  const bifurcate = (arr, filter) =>
    arr.reduce((acc, val, i) => (acc[filter[i] ? 0 : 1].push(val), acc), [[], []]);
  const bifurcateBy = (arr, fn) =>
    arr.reduce((acc, val, i) => (acc[fn(val, i) ? 0 : 1].push(val), acc), [[], []]);
  const bind = (fn, context, ...boundArgs) => (...args) => fn.apply(context, [...boundArgs, ...args]);
  const bindAll = (obj, ...fns) =>
    fns.forEach(
      fn => (
        (f = obj[fn]),
        (obj[fn] = function() {
          return f.apply(obj);
        })
      )
    );
  const bindKey = (context, fn, ...boundArgs) => (...args) =>
    context[fn].apply(context, [...boundArgs, ...args]);
  const binomialCoefficient = (n, k) => {
    if (Number.isNaN(n) || Number.isNaN(k)) return NaN;
    if (k < 0 || k > n) return 0;
    if (k === 0 || k === n) return 1;
    if (k === 1 || k === n - 1) return n;
    if (n - k < k) k = n - k;
    let res = n;
    for (let j = 2; j <= k; j++) res *= (n - j + 1) / j;
    return Math.round(res);
  };
  const bottomVisible = () =>
    document.documentElement.clientHeight + window.scrollY >=
    (document.documentElement.scrollHeight || document.documentElement.clientHeight);
  const btoa = str => Buffer.from(str, 'binary').toString('base64');
  const byteSize = str => new Blob([str]).size;
  const call = (key, ...args) => context => context[key](...args);
  const capitalize = ([first, ...rest], lowerRest = false) =>
    first.toUpperCase() + (lowerRest ? rest.join('').toLowerCase() : rest.join(''));
  const capitalizeEveryWord = str => str.replace(/\b[a-z]/g, char => char.toUpperCase());
  const castArray = val => (Array.isArray(val) ? val : [val]);
  const chainAsync = fns => {
    let curr = 0;
    const last = fns[fns.length - 1];
    const next = () => {
      const fn = fns[curr++];
      fn === last ? fn() : fn(next);
    };
    next();
  };
  const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]);
  const chunk = (arr, size) =>
    Array.from({ length: Math.ceil(arr.length / size) }, (v, i) =>
      arr.slice(i * size, i * size + size)
    );
  const clampNumber = (num, a, b) => Math.max(Math.min(num, Math.max(a, b)), Math.min(a, b));
  const cloneRegExp = regExp => new RegExp(regExp.source, regExp.flags);
  const coalesce = (...args) => args.find(_ => ![undefined, null].includes(_));
  const coalesceFactory = valid => (...args) => args.find(valid);
  const collectInto = fn => (...args) => fn(args);
  const colorize = (...args) => ({
    black: `\x1b[30m${args.join(' ')}`,
    red: `\x1b[31m${args.join(' ')}`,
    green: `\x1b[32m${args.join(' ')}`,
    yellow: `\x1b[33m${args.join(' ')}`,
    blue: `\x1b[34m${args.join(' ')}`,
    magenta: `\x1b[35m${args.join(' ')}`,
    cyan: `\x1b[36m${args.join(' ')}`,
    white: `\x1b[37m${args.join(' ')}`,
    bgBlack: `\x1b[40m${args.join(' ')}\x1b[0m`,
    bgRed: `\x1b[41m${args.join(' ')}\x1b[0m`,
    bgGreen: `\x1b[42m${args.join(' ')}\x1b[0m`,
    bgYellow: `\x1b[43m${args.join(' ')}\x1b[0m`,
    bgBlue: `\x1b[44m${args.join(' ')}\x1b[0m`,
    bgMagenta: `\x1b[45m${args.join(' ')}\x1b[0m`,
    bgCyan: `\x1b[46m${args.join(' ')}\x1b[0m`,
    bgWhite: `\x1b[47m${args.join(' ')}\x1b[0m`
  });
  const compact = arr => arr.filter(Boolean);
  const compactWhitespace = str => str.replace(/\s{2,}/g, ' ');
  const compose = (...fns) => fns.reduce((f, g) => (...args) => f(g(...args)));
  const composeRight = (...fns) => fns.reduce((f, g) => (...args) => g(f(...args)));
  const converge = (converger, fns) => (...args) => converger(...fns.map(fn => fn.apply(null, args)));
  const copyToClipboard = str => {
    const el = document.createElement('textarea');
    el.value = str;
    el.setAttribute('readonly', '');
    el.style.position = 'absolute';
    el.style.left = '-9999px';
    document.body.appendChild(el);
    const selected =
      document.getSelection().rangeCount > 0 ? document.getSelection().getRangeAt(0) : false;
    el.select();
    document.execCommand('copy');
    document.body.removeChild(el);
    if (selected) {
      document.getSelection().removeAllRanges();
      document.getSelection().addRange(selected);
    }
  };
  const countBy = (arr, fn) =>
    arr.map(typeof fn === 'function' ? fn : val => val[fn]).reduce((acc, val) => {
      acc[val] = (acc[val] || 0) + 1;
      return acc;
    }, {});
  const counter = (selector, start, end, step = 1, duration = 2000) => {
    let current = start,
      _step = (end - start) * step < 0 ? -step : step,
      timer = setInterval(() => {
        current += _step;
        document.querySelector(selector).innerHTML = current;
        if (current >= end) document.querySelector(selector).innerHTML = end;
        if (current >= end) clearInterval(timer);
      }, Math.abs(Math.floor(duration / (end - start))));
    return timer;
  };
  const countOccurrences = (arr, val) => arr.reduce((a, v) => (v === val ? a + 1 : a), 0);
  
  const createDirIfNotExists = dir => (!fs.existsSync(dir) ? fs.mkdirSync(dir) : undefined);
  const createElement = str => {
    const el = document.createElement('div');
    el.innerHTML = str;
    return el.firstElementChild;
  };
  const createEventHub = () => ({
    hub: Object.create(null),
    emit(event, data) {
      (this.hub[event] || []).forEach(handler => handler(data));
    },
    on(event, handler) {
      if (!this.hub[event]) this.hub[event] = [];
      this.hub[event].push(handler);
    },
    off(event, handler) {
      const i = (this.hub[event] || []).findIndex(h => h === handler);
      if (i > -1) this.hub[event].splice(i, 1);
      if (this.hub[event].length === 0) delete this.hub[event];
    }
  });
  const CSVToArray = (data, delimiter = ',', omitFirstRow = false) =>
    data
      .slice(omitFirstRow ? data.indexOf('\n') + 1 : 0)
      .split('\n')
      .map(v => v.split(delimiter));
  const CSVToJSON = (data, delimiter = ',') => {
    const titles = data.slice(0, data.indexOf('\n')).split(delimiter);
    return data
      .slice(data.indexOf('\n') + 1)
      .split('\n')
      .map(v => {
        const values = v.split(delimiter);
        return titles.reduce((obj, title, index) => ((obj[title] = values[index]), obj), {});
      });
  };
  const currentURL = () => window.location.href;
  const curry = (fn, arity = fn.length, ...args) =>
    arity <= args.length ? fn(...args) : curry.bind(null, fn, arity, ...args);
  const dayOfYear = date =>
    Math.floor((date - new Date(date.getFullYear(), 0, 0)) / 1000 / 60 / 60 / 24);
  const debounce = (fn, ms = 0) => {
    let timeoutId;
    return function(...args) {
      clearTimeout(timeoutId);
      timeoutId = setTimeout(() => fn.apply(this, args), ms);
    };
  };
  const decapitalize = ([first, ...rest], upperRest = false) =>
    first.toLowerCase() + (upperRest ? rest.join('').toUpperCase() : rest.join(''));
  const deepClone = obj => {
    if (obj === null) return null;
    let clone = Object.assign({}, obj);
    Object.keys(clone).forEach(
      key => (clone[key] = typeof obj[key] === 'object' ? deepClone(obj[key]) : obj[key])
    );
    return Array.isArray(obj) && obj.length
      ? (clone.length = obj.length) && Array.from(clone)
      : Array.isArray(obj)
      ? Array.from(obj)
      : clone;
  };
  const deepFlatten = arr => [].concat(...arr.map(v => (Array.isArray(v) ? deepFlatten(v) : v)));
  const deepFreeze = obj =>
    Object.keys(obj).forEach(prop =>
      !(obj[prop] instanceof Object) || Object.isFrozen(obj[prop]) ? null : deepFreeze(obj[prop])
    ) || Object.freeze(obj);
  const deepGet = (obj, keys) => keys.reduce((xs, x) => (xs && xs[x] ? xs[x] : null), obj);
  const deepMapKeys = (obj, f) =>
    Array.isArray(obj)
      ? obj.map(val => deepMapKeys(val, f))
      : typeof obj === 'object'
      ? Object.keys(obj).reduce((acc, current) => {
          const val = obj[current];
          acc[f(current)] =
            val !== null && typeof val === 'object' ? deepMapKeys(val, f) : (acc[f(current)] = val);
          return acc;
        }, {})
      : obj;
  const defaults = (obj, ...defs) => Object.assign({}, obj, ...defs.reverse(), obj);
  const defer = (fn, ...args) => setTimeout(fn, 1, ...args);
  const degreesToRads = deg => (deg * Math.PI) / 180.0;
  const delay = (fn, wait, ...args) => setTimeout(fn, wait, ...args);
  const detectDeviceType = () =>
    /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)
      ? 'Mobile'
      : 'Desktop';
  const difference = (a, b) => {
    const s = new Set(b);
    return a.filter(x => !s.has(x));
  };
  const differenceBy = (a, b, fn) => {
    const s = new Set(b.map(fn));
    return a.map(fn).filter(el => !s.has(el));
  };
  const differenceWith = (arr, val, comp) => arr.filter(a => val.findIndex(b => comp(a, b)) === -1);
  const dig = (obj, target) =>
    target in obj
      ? obj[target]
      : Object.values(obj).reduce((acc, val) => {
          if (acc !== undefined) return acc;
          if (typeof val === 'object') return dig(val, target);
        }, undefined);
  const digitize = n => [...`${n}`].map(i => parseInt(i));
  const distance = (x0, y0, x1, y1) => Math.hypot(x1 - x0, y1 - y0);
  const drop = (arr, n = 1) => arr.slice(n);
  const dropRight = (arr, n = 1) => arr.slice(0, -n);
  const dropRightWhile = (arr, func) => {
    let rightIndex = arr.length;
    while (rightIndex-- && !func(arr[rightIndex]));
    return arr.slice(0, rightIndex + 1);
  };
  const dropWhile = (arr, func) => {
    while (arr.length > 0 && !func(arr[0])) arr = arr.slice(1);
    return arr;
  };
  const elementContains = (parent, child) => parent !== child && parent.contains(child);
  const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
    const { top, left, bottom, right } = el.getBoundingClientRect();
    const { innerHeight, innerWidth } = window;
    return partiallyVisible
      ? ((top > 0 && top < innerHeight) || (bottom > 0 && bottom < innerHeight)) &&
          ((left > 0 && left < innerWidth) || (right > 0 && right < innerWidth))
      : top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
  };
  const elo = ([...ratings], kFactor = 32, selfRating) => {
    const [a, b] = ratings;
    const expectedScore = (self, opponent) => 1 / (1 + 10 ** ((opponent - self) / 400));
    const newRating = (rating, i) =>
      (selfRating || rating) + kFactor * (i - expectedScore(i ? a : b, i ? b : a));
    if (ratings.length === 2) return [newRating(a, 1), newRating(b, 0)];
  
    for (let i = 0, len = ratings.length; i < len; i++) {
      let j = i;
      while (j < len - 1) {
        j++;
        [ratings[i], ratings[j]] = elo([ratings[i], ratings[j]], kFactor);
      }
    }
    return ratings;
  };
  const equals = (a, b) => {
    if (a === b) return true;
    if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();
    if (!a || !b || (typeof a !== 'object' && typeof b !== 'object')) return a === b;
    if (a.prototype !== b.prototype) return false;
    let keys = Object.keys(a);
    if (keys.length !== Object.keys(b).length) return false;
    return keys.every(k => equals(a[k], b[k]));
  };
  const escapeHTML = str =>
    str.replace(
      /[&<>'"]/g,
      tag =>
        ({
          '&': '&amp;',
          '<': '&lt;',
          '>': '&gt;',
          "'": '&#39;',
          '"': '&quot;'
        }[tag] || tag)
    );
  const escapeRegExp = str => str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
  const everyNth = (arr, nth) => arr.filter((e, i) => i % nth === nth - 1);
  const extendHex = shortHex =>
    '#' +
    shortHex
      .slice(shortHex.startsWith('#') ? 1 : 0)
      .split('')
      .map(x => x + x)
      .join('');
  const factorial = n =>
    n < 0
      ? (() => {
          throw new TypeError('Negative numbers are not allowed!');
        })()
      : n <= 1
      ? 1
      : n * factorial(n - 1);
  const fibonacci = n =>
    Array.from({ length: n }).reduce(
      (acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i),
      []
    );
  const filterFalsy = arr => arr.filter(Boolean);
  const filterNonUnique = arr => arr.filter(i => arr.indexOf(i) === arr.lastIndexOf(i));
  const filterNonUniqueBy = (arr, fn) =>
    arr.filter((v, i) => arr.every((x, j) => (i === j) === fn(v, x, i, j)));
  const findKey = (obj, fn) => Object.keys(obj).find(key => fn(obj[key], key, obj));
  const findLast = (arr, fn) => arr.filter(fn).pop();
  const findLastIndex = (arr, fn) =>
    (arr
      .map((val, i) => [i, val])
      .filter(([i, val]) => fn(val, i, arr))
      .pop() || [-1])[0];
  const findLastKey = (obj, fn) =>
    Object.keys(obj)
      .reverse()
      .find(key => fn(obj[key], key, obj));
  const flatten = (arr, depth = 1) =>
    arr.reduce((a, v) => a.concat(depth > 1 && Array.isArray(v) ? flatten(v, depth - 1) : v), []);
  const flattenObject = (obj, prefix = '') =>
    Object.keys(obj).reduce((acc, k) => {
      const pre = prefix.length ? prefix + '.' : '';
      if (typeof obj[k] === 'object') Object.assign(acc, flattenObject(obj[k], pre + k));
      else acc[pre + k] = obj[k];
      return acc;
    }, {});
  const flip = fn => (first, ...rest) => fn(...rest, first);
  const forEachRight = (arr, callback) =>
    arr
      .slice(0)
      .reverse()
      .forEach(callback);
  const formatDuration = ms => {
    if (ms < 0) ms = -ms;
    const time = {
      day: Math.floor(ms / 86400000),
      hour: Math.floor(ms / 3600000) % 24,
      minute: Math.floor(ms / 60000) % 60,
      second: Math.floor(ms / 1000) % 60,
      millisecond: Math.floor(ms) % 1000
    };
    return Object.entries(time)
      .filter(val => val[1] !== 0)
      .map(([key, val]) => `${val} ${key}${val !== 1 ? 's' : ''}`)
      .join(', ');
  };
  const formToObject = form =>
    Array.from(new FormData(form)).reduce(
      (acc, [key, value]) => ({
        ...acc,
        [key]: value
      }),
      {}
    );
  const forOwn = (obj, fn) => Object.keys(obj).forEach(key => fn(obj[key], key, obj));
  const forOwnRight = (obj, fn) =>
    Object.keys(obj)
      .reverse()
      .forEach(key => fn(obj[key], key, obj));
  const fromCamelCase = (str, separator = '_') =>
    str
      .replace(/([a-z\d])([A-Z])/g, '$1' + separator + '$2')
      .replace(/([A-Z]+)([A-Z][a-z\d]+)/g, '$1' + separator + '$2')
      .toLowerCase();
  const functionName = fn => (console.debug(fn.name), fn);
  const functions = (obj, inherited = false) =>
    (inherited
      ? [...Object.keys(obj), ...Object.keys(Object.getPrototypeOf(obj))]
      : Object.keys(obj)
    ).filter(key => typeof obj[key] === 'function');
  const gcd = (...arr) => {
    const _gcd = (x, y) => (!y ? x : gcd(y, x % y));
    return [...arr].reduce((a, b) => _gcd(a, b));
  };
  const geometricProgression = (end, start = 1, step = 2) =>
    Array.from({ length: Math.floor(Math.log(end / start) / Math.log(step)) + 1 }).map(
      (v, i) => start * step ** i
    );
  const get = (from, ...selectors) =>
    [...selectors].map(s =>
      s
        .replace(/\[([^\[\]]*)\]/g, '.$1.')
        .split('.')
        .filter(t => t !== '')
        .reduce((prev, cur) => prev && prev[cur], from)
    );
  const getColonTimeFromDate = date => date.toTimeString().slice(0, 8);
  const getDaysDiffBetweenDates = (dateInitial, dateFinal) =>
    (dateFinal - dateInitial) / (1000 * 3600 * 24);
  const getImages = (el, includeDuplicates = false) => {
    const images = [...el.getElementsByTagName('img')].map(img => img.getAttribute('src'));
    return includeDuplicates ? images : [...new Set(images)];
  };
  const getMeridiemSuffixOfInteger = num =>
    num === 0 || num === 24
      ? 12 + 'am'
      : num === 12
      ? 12 + 'pm'
      : num < 12
      ? (num % 12) + 'am'
      : (num % 12) + 'pm';
  const getScrollPosition = (el = window) => ({
    x: el.pageXOffset !== undefined ? el.pageXOffset : el.scrollLeft,
    y: el.pageYOffset !== undefined ? el.pageYOffset : el.scrollTop
  });
  const getStyle = (el, ruleName) => getComputedStyle(el)[ruleName];
  const getType = v =>
    v === undefined ? 'undefined' : v === null ? 'null' : v.constructor.name.toLowerCase();
  const getURLParameters = url =>
    (url.match(/([^?=&]+)(=([^&]*))/g) || []).reduce(
      (a, v) => ((a[v.slice(0, v.indexOf('='))] = v.slice(v.indexOf('=') + 1)), a),
      {}
    );
  const groupBy = (arr, fn) =>
    arr.map(typeof fn === 'function' ? fn : val => val[fn]).reduce((acc, val, i) => {
      acc[val] = (acc[val] || []).concat(arr[i]);
      return acc;
    }, {});
  const hammingDistance = (num1, num2) => ((num1 ^ num2).toString(2).match(/1/g) || '').length;
  const hasClass = (el, className) => el.classList.contains(className);
  const hasFlags = (...flags) =>
    flags.every(flag => process.argv.includes(/^-{1,2}/.test(flag) ? flag : '--' + flag));
  const hashBrowser = val =>
    crypto.subtle.digest('SHA-256', new TextEncoder('utf-8').encode(val)).then(h => {
      let hexes = [],
        view = new DataView(h);
      for (let i = 0; i < view.byteLength; i += 4)
        hexes.push(('00000000' + view.getUint32(i).toString(16)).slice(-8));
      return hexes.join('');
    });
  
  const hashNode = val =>
    new Promise(resolve =>
      setTimeout(
        () =>
          resolve(
            crypto
              .createHash('sha256')
              .update(val)
              .digest('hex')
          ),
        0
      )
    );
  const head = arr => arr[0];
  const hexToRGB = hex => {
    let alpha = false,
      h = hex.slice(hex.startsWith('#') ? 1 : 0);
    if (h.length === 3) h = [...h].map(x => x + x).join('');
    else if (h.length === 8) alpha = true;
    h = parseInt(h, 16);
    return (
      'rgb' +
      (alpha ? 'a' : '') +
      '(' +
      (h >>> (alpha ? 24 : 16)) +
      ', ' +
      ((h & (alpha ? 0x00ff0000 : 0x00ff00)) >>> (alpha ? 16 : 8)) +
      ', ' +
      ((h & (alpha ? 0x0000ff00 : 0x0000ff)) >>> (alpha ? 8 : 0)) +
      (alpha ? `, ${h & 0x000000ff}` : '') +
      ')'
    );
  };
  const hide = (...el) => [...el].forEach(e => (e.style.display = 'none'));
  const httpGet = (url, callback, err = console.error) => {
    const request = new XMLHttpRequest();
    request.open('GET', url, true);
    request.onload = () => callback(request.responseText);
    request.onerror = () => err(request);
    request.send();
  };
  const httpPost = (url, data, callback, err = console.error) => {
    const request = new XMLHttpRequest();
    request.open('POST', url, true);
    request.setRequestHeader('Content-type', 'application/json; charset=utf-8');
    request.onload = () => callback(request.responseText);
    request.onerror = () => err(request);
    request.send(data);
  };
  const httpsRedirect = () => {
    if (location.protocol !== 'https:') location.replace('https://' + location.href.split('//')[1]);
  };
  const hz = (fn, iterations = 100) => {
    const before = performance.now();
    for (let i = 0; i < iterations; i++) fn();
    return (1000 * iterations) / (performance.now() - before);
  };
  const indentString = (str, count, indent = ' ') => str.replace(/^/gm, indent.repeat(count));
  const indexOfAll = (arr, val) => arr.reduce((acc, el, i) => (el === val ? [...acc, i] : acc), []);
  const initial = arr => arr.slice(0, -1);
  const initialize2DArray = (w, h, val = null) =>
    Array.from({ length: h }).map(() => Array.from({ length: w }).fill(val));
  const initializeArrayWithRange = (end, start = 0, step = 1) =>
    Array.from({ length: Math.ceil((end - start + 1) / step) }, (v, i) => i * step + start);
  const initializeArrayWithRangeRight = (end, start = 0, step = 1) =>
    Array.from({ length: Math.ceil((end + 1 - start) / step) }).map(
      (v, i, arr) => (arr.length - i - 1) * step + start
    );
  const initializeArrayWithValues = (n, val = 0) => Array(n).fill(val);
  const initializeNDArray = (val, ...args) =>
    args.length === 0
      ? val
      : Array.from({ length: args[0] }).map(() => initializeNDArray(val, ...args.slice(1)));
  const inRange = (n, start, end = null) => {
    if (end && start > end) [end, start] = [start, end];
    return end == null ? n >= 0 && n < start : n >= start && n < end;
  };
  const insertAfter = (el, htmlString) => el.insertAdjacentHTML('afterend', htmlString);
  const insertBefore = (el, htmlString) => el.insertAdjacentHTML('beforebegin', htmlString);
  const intersection = (a, b) => {
    const s = new Set(b);
    return a.filter(x => s.has(x));
  };
  const intersectionBy = (a, b, fn) => {
    const s = new Set(b.map(fn));
    return a.filter(x => s.has(fn(x)));
  };
  const intersectionWith = (a, b, comp) => a.filter(x => b.findIndex(y => comp(x, y)) !== -1);
  const invertKeyValues = (obj, fn) =>
    Object.keys(obj).reduce((acc, key) => {
      const val = fn ? fn(obj[key]) : obj[key];
      acc[val] = acc[val] || [];
      acc[val].push(key);
      return acc;
    }, {});
  const is = (type, val) => ![, null].includes(val) && val.constructor === type;
  const isAbsoluteURL = str => /^[a-z][a-z0-9+.-]*:/.test(str);
  const isAfterDate = (dateA, dateB) => dateA > dateB;
  const isAnagram = (str1, str2) => {
    const normalize = str =>
      str
        .toLowerCase()
        .replace(/[^a-z0-9]/gi, '')
        .split('')
        .sort()
        .join('');
    return normalize(str1) === normalize(str2);
  };
  const isArrayLike = obj => obj != null && typeof obj[Symbol.iterator] === 'function';
  const isBeforeDate = (dateA, dateB) => dateA < dateB;
  const isBoolean = val => typeof val === 'boolean';
  const isBrowser = () => ![typeof window, typeof document].includes('undefined');
  const isBrowserTabFocused = () => !document.hidden;
  const isDivisible = (dividend, divisor) => dividend % divisor === 0;
  const isDuplexStream = val =>
    val !== null &&
    typeof val === 'object' &&
    typeof val.pipe === 'function' &&
    typeof val._read === 'function' &&
    typeof val._readableState === 'object' &&
    typeof val._write === 'function' &&
    typeof val._writableState === 'object';
  const isEmpty = val => val == null || !(Object.keys(val) || val).length;
  const isEven = num => num % 2 === 0;
  const isFunction = val => typeof val === 'function';
  const isLowerCase = str => str === str.toLowerCase();
  const isNegativeZero = val => val === 0 && 1 / val === -Infinity;
  const isNil = val => val === undefined || val === null;
  const isNull = val => val === null;
  const isNumber = val => typeof val === 'number' && val === val;
  const isObject = obj => obj === Object(obj);
  const isObjectLike = val => val !== null && typeof val === 'object';
  const isOdd = num => num % 2 === 1;
  const isPlainObject = val => !!val && typeof val === 'object' && val.constructor === Object;
  const isPrime = num => {
    const boundary = Math.floor(Math.sqrt(num));
    for (var i = 2; i <= boundary; i++) if (num % i === 0) return false;
    return num >= 2;
  };
  const isPrimitive = val => Object(val) !== val;
  const isPromiseLike = obj =>
    obj !== null &&
    (typeof obj === 'object' || typeof obj === 'function') &&
    typeof obj.then === 'function';
  const isReadableStream = val =>
    val !== null &&
    typeof val === 'object' &&
    typeof val.pipe === 'function' &&
    typeof val._read === 'function' &&
    typeof val._readableState === 'object';
  const isSameDate = (dateA, dateB) => dateA.toISOString() === dateB.toISOString();
  const isSorted = arr => {
    let direction = -(arr[0] - arr[1]);
    for (let [i, val] of arr.entries()) {
      direction = !direction ? -(arr[i - 1] - arr[i]) : direction;
      if (i === arr.length - 1) return !direction ? 0 : direction;
      else if ((val - arr[i + 1]) * direction > 0) return 0;
    }
  };
  const isStream = val => val !== null && typeof val === 'object' && typeof val.pipe === 'function';
  const isString = val => typeof val === 'string';
  const isSymbol = val => typeof val === 'symbol';
  const isTravisCI = () => 'TRAVIS' in process.env && 'CI' in process.env;
  const isUndefined = val => val === undefined;
  const isUpperCase = str => str === str.toUpperCase();
  const isValidJSON = str => {
    try {
      JSON.parse(str);
      return true;
    } catch (e) {
      return false;
    }
  };
  const isWeekday = (t = new Date()) => {
    return t.getDay() % 6 !== 0;
  };
  const isWeekend = (t = new Date()) => {
    return t.getDay() % 6 === 0;
  };
  const isWritableStream = val =>
    val !== null &&
    typeof val === 'object' &&
    typeof val.pipe === 'function' &&
    typeof val._write === 'function' &&
    typeof val._writableState === 'object';
  const join = (arr, separator = ',', end = separator) =>
    arr.reduce(
      (acc, val, i) =>
        i === arr.length - 2
          ? acc + val + end
          : i === arr.length - 1
          ? acc + val
          : acc + val + separator,
      ''
    );
  const JSONtoCSV = (arr, columns, delimiter = ',') =>
    [
      columns.join(delimiter),
      ...arr.map(obj =>
        columns.reduce(
          (acc, key) => `${acc}${!acc.length ? '' : delimiter}"${!obj[key] ? '' : obj[key]}"`,
          ''
        )
      )
    ].join('\n');
  
  const JSONToFile = (obj, filename) =>
    fs.writeFile(`${filename}.json`, JSON.stringify(obj, null, 2));
  const last = arr => arr[arr.length - 1];
  const lcm = (...arr) => {
    const gcd = (x, y) => (!y ? x : gcd(y, x % y));
    const _lcm = (x, y) => (x * y) / gcd(x, y);
    return [...arr].reduce((a, b) => _lcm(a, b));
  };
  const longestItem = (...vals) => vals.reduce((a, x) => (x.length > a.length ? x : a));
  const lowercaseKeys = obj =>
    Object.keys(obj).reduce((acc, key) => {
      acc[key.toLowerCase()] = obj[key];
      return acc;
    }, {});
  const luhnCheck = num => {
    let arr = (num + '')
      .split('')
      .reverse()
      .map(x => parseInt(x));
    let lastDigit = arr.splice(0, 1)[0];
    let sum = arr.reduce((acc, val, i) => (i % 2 !== 0 ? acc + val : acc + ((val * 2) % 9) || 9), 0);
    sum += lastDigit;
    return sum % 10 === 0;
  };
  const mapKeys = (obj, fn) =>
    Object.keys(obj).reduce((acc, k) => {
      acc[fn(obj[k], k, obj)] = obj[k];
      return acc;
    }, {});
  const mapNumRange = (num, inMin, inMax, outMin, outMax) =>
    ((num - inMin) * (outMax - outMin)) / (inMax - inMin) + outMin;
  const mapObject = (arr, fn) =>
    (a => (
      (a = [arr, arr.map(fn)]), a[0].reduce((acc, val, ind) => ((acc[val] = a[1][ind]), acc), {})
    ))();
  const mapString = (str, fn) =>
    str
      .split('')
      .map((c, i) => fn(c, i, str))
      .join('');
  const mapValues = (obj, fn) =>
    Object.keys(obj).reduce((acc, k) => {
      acc[k] = fn(obj[k], k, obj);
      return acc;
    }, {});
  const mask = (cc, num = 4, mask = '*') => `${cc}`.slice(-num).padStart(`${cc}`.length, mask);
  const matches = (obj, source) =>
    Object.keys(source).every(key => obj.hasOwnProperty(key) && obj[key] === source[key]);
  const matchesWith = (obj, source, fn) =>
    Object.keys(source).every(key =>
      obj.hasOwnProperty(key) && fn
        ? fn(obj[key], source[key], key, obj, source)
        : obj[key] == source[key]
    );
  const maxBy = (arr, fn) => Math.max(...arr.map(typeof fn === 'function' ? fn : val => val[fn]));
  const maxDate = dates => new Date(Math.max(...dates));
  const maxN = (arr, n = 1) => [...arr].sort((a, b) => b - a).slice(0, n);
  const median = arr => {
    const mid = Math.floor(arr.length / 2),
      nums = [...arr].sort((a, b) => a - b);
    return arr.length % 2 !== 0 ? nums[mid] : (nums[mid - 1] + nums[mid]) / 2;
  };
  const memoize = fn => {
    const cache = new Map();
    const cached = function(val) {
      return cache.has(val) ? cache.get(val) : cache.set(val, fn.call(this, val)) && cache.get(val);
    };
    cached.cache = cache;
    return cached;
  };
  const merge = (...objs) =>
    [...objs].reduce(
      (acc, obj) =>
        Object.keys(obj).reduce((a, k) => {
          acc[k] = acc.hasOwnProperty(k) ? [].concat(acc[k]).concat(obj[k]) : obj[k];
          return acc;
        }, {}),
      {}
    );
  const midpoint = ([x1, y1], [x2, y2]) => [(x1 + x2) / 2, (y1 + y2) / 2];
  const minBy = (arr, fn) => Math.min(...arr.map(typeof fn === 'function' ? fn : val => val[fn]));
  const minDate = dates => new Date(Math.min(...dates));
  const minN = (arr, n = 1) => [...arr].sort((a, b) => a - b).slice(0, n);
  const mostPerformant = (fns, iterations = 10000) => {
    const times = fns.map(fn => {
      const before = performance.now();
      for (let i = 0; i < iterations; i++) fn();
      return performance.now() - before;
    });
    return times.indexOf(Math.min(...times));
  };
  const negate = func => (...args) => !func(...args);
  const nest = (items, id = null, link = 'parent_id') =>
    items
      .filter(item => item[link] === id)
      .map(item => ({ ...item, children: nest(items, item.id) }));
  const nodeListToArray = nodeList => [...nodeList];
  const none = (arr, fn = Boolean) => !arr.some(fn);
  const nthArg = n => (...args) => args.slice(n)[0];
  const nthElement = (arr, n = 0) => (n === -1 ? arr.slice(n) : arr.slice(n, n + 1))[0];
  const objectFromPairs = arr => arr.reduce((a, [key, val]) => ((a[key] = val), a), {});
  const objectToPairs = obj => Object.keys(obj).map(k => [k, obj[k]]);
  const observeMutations = (element, callback, options) => {
    const observer = new MutationObserver(mutations => mutations.forEach(m => callback(m)));
    observer.observe(
      element,
      Object.assign(
        {
          childList: true,
          attributes: true,
          attributeOldValue: true,
          characterData: true,
          characterDataOldValue: true,
          subtree: true
        },
        options
      )
    );
    return observer;
  };
  const off = (el, evt, fn, opts = false) => el.removeEventListener(evt, fn, opts);
  const offset = (arr, offset) => [...arr.slice(offset), ...arr.slice(0, offset)];
  const omit = (obj, arr) =>
    Object.keys(obj)
      .filter(k => !arr.includes(k))
      .reduce((acc, key) => ((acc[key] = obj[key]), acc), {});
  const omitBy = (obj, fn) =>
    Object.keys(obj)
      .filter(k => !fn(obj[k], k))
      .reduce((acc, key) => ((acc[key] = obj[key]), acc), {});
  const on = (el, evt, fn, opts = {}) => {
    const delegatorFn = e => e.target.matches(opts.target) && fn.call(e.target, e);
    el.addEventListener(evt, opts.target ? delegatorFn : fn, opts.options || false);
    if (opts.target) return delegatorFn;
  };
  const once = fn => {
    let called = false;
    return function(...args) {
      if (called) return;
      called = true;
      return fn.apply(this, args);
    };
  };
  const onUserInputChange = callback => {
    let type = 'mouse',
      lastTime = 0;
    const mousemoveHandler = () => {
      const now = performance.now();
      if (now - lastTime < 20)
        (type = 'mouse'), callback(type), document.removeEventListener('mousemove', mousemoveHandler);
      lastTime = now;
    };
    document.addEventListener('touchstart', () => {
      if (type === 'touch') return;
      (type = 'touch'), callback(type), document.addEventListener('mousemove', mousemoveHandler);
    });
  };
  const orderBy = (arr, props, orders) =>
    [...arr].sort((a, b) =>
      props.reduce((acc, prop, i) => {
        if (acc === 0) {
          const [p1, p2] = orders && orders[i] === 'desc' ? [b[prop], a[prop]] : [a[prop], b[prop]];
          acc = p1 > p2 ? 1 : p1 < p2 ? -1 : 0;
        }
        return acc;
      }, 0)
    );
  const over = (...fns) => (...args) => fns.map(fn => fn.apply(null, args));
  const overArgs = (fn, transforms) => (...args) => fn(...args.map((val, i) => transforms[i](val)));
  const pad = (str, length, char = ' ') =>
    str.padStart((str.length + length) / 2, char).padEnd(length, char);
  const palindrome = str => {
    const s = str.toLowerCase().replace(/[\W_]/g, '');
    return s === [...s].reverse().join('');
  };
  const parseCookie = str =>
    str
      .split(';')
      .map(v => v.split('='))
      .reduce((acc, v) => {
        acc[decodeURIComponent(v[0].trim())] = decodeURIComponent(v[1].trim());
        return acc;
      }, {});
  const partial = (fn, ...partials) => (...args) => fn(...partials, ...args);
  const partialRight = (fn, ...partials) => (...args) => fn(...args, ...partials);
  const partition = (arr, fn) =>
    arr.reduce(
      (acc, val, i, arr) => {
        acc[fn(val, i, arr) ? 0 : 1].push(val);
        return acc;
      },
      [[], []]
    );
  const percentile = (arr, val) =>
    (100 * arr.reduce((acc, v) => acc + (v < val ? 1 : 0) + (v === val ? 0.5 : 0), 0)) / arr.length;
  const permutations = arr => {
    if (arr.length <= 2) return arr.length === 2 ? [arr, [arr[1], arr[0]]] : arr;
    return arr.reduce(
      (acc, item, i) =>
        acc.concat(
          permutations([...arr.slice(0, i), ...arr.slice(i + 1)]).map(val => [item, ...val])
        ),
      []
    );
  };
  const pick = (obj, arr) =>
    arr.reduce((acc, curr) => (curr in obj && (acc[curr] = obj[curr]), acc), {});
  const pickBy = (obj, fn) =>
    Object.keys(obj)
      .filter(k => fn(obj[k], k))
      .reduce((acc, key) => ((acc[key] = obj[key]), acc), {});
  const pipeAsyncFunctions = (...fns) => arg => fns.reduce((p, f) => p.then(f), Promise.resolve(arg));
  const pipeFunctions = (...fns) => fns.reduce((f, g) => (...args) => g(f(...args)));
  const pluralize = (val, word, plural = word + 's') => {
    const _pluralize = (num, word, plural = word + 's') =>
      [1, -1].includes(Number(num)) ? word : plural;
    if (typeof val === 'object') return (num, word) => _pluralize(num, word, val[word]);
    return _pluralize(val, word, plural);
  };
  const powerset = arr => arr.reduce((a, v) => a.concat(a.map(r => [v].concat(r))), [[]]);
  const prefix = prop => {
    const capitalizedProp = prop.charAt(0).toUpperCase() + prop.slice(1);
    const prefixes = ['', 'webkit', 'moz', 'ms', 'o'];
    const i = prefixes.findIndex(
      prefix => typeof document.body.style[prefix ? prefix + capitalizedProp : prop] !== 'undefined'
    );
    return i !== -1 ? (i === 0 ? prop : prefixes[i] + capitalizedProp) : null;
  };
  const prettyBytes = (num, precision = 3, addSpace = true) => {
    const UNITS = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
    if (Math.abs(num) < 1) return num + (addSpace ? ' ' : '') + UNITS[0];
    const exponent = Math.min(Math.floor(Math.log10(num < 0 ? -num : num) / 3), UNITS.length - 1);
    const n = Number(((num < 0 ? -num : num) / 1000 ** exponent).toPrecision(precision));
    return (num < 0 ? '-' : '') + n + (addSpace ? ' ' : '') + UNITS[exponent];
  };
  const primes = num => {
    let arr = Array.from({ length: num - 1 }).map((x, i) => i + 2),
      sqroot = Math.floor(Math.sqrt(num)),
      numsTillSqroot = Array.from({ length: sqroot - 1 }).map((x, i) => i + 2);
    numsTillSqroot.forEach(x => (arr = arr.filter(y => y % x !== 0 || y === x)));
    return arr;
  };
  const promisify = func => (...args) =>
    new Promise((resolve, reject) =>
      func(...args, (err, result) => (err ? reject(err) : resolve(result)))
    );
  const pull = (arr, ...args) => {
    let argState = Array.isArray(args[0]) ? args[0] : args;
    let pulled = arr.filter((v, i) => !argState.includes(v));
    arr.length = 0;
    pulled.forEach(v => arr.push(v));
  };
  const pullAtIndex = (arr, pullArr) => {
    let removed = [];
    let pulled = arr
      .map((v, i) => (pullArr.includes(i) ? removed.push(v) : v))
      .filter((v, i) => !pullArr.includes(i));
    arr.length = 0;
    pulled.forEach(v => arr.push(v));
    return removed;
  };
  const pullAtValue = (arr, pullArr) => {
    let removed = [],
      pushToRemove = arr.forEach((v, i) => (pullArr.includes(v) ? removed.push(v) : v)),
      mutateTo = arr.filter((v, i) => !pullArr.includes(v));
    arr.length = 0;
    mutateTo.forEach(v => arr.push(v));
    return removed;
  };
  const pullBy = (arr, ...args) => {
    const length = args.length;
    let fn = length > 1 ? args[length - 1] : undefined;
    fn = typeof fn == 'function' ? (args.pop(), fn) : undefined;
    let argState = (Array.isArray(args[0]) ? args[0] : args).map(val => fn(val));
    let pulled = arr.filter((v, i) => !argState.includes(fn(v)));
    arr.length = 0;
    pulled.forEach(v => arr.push(v));
  };
  const radsToDegrees = rad => (rad * 180.0) / Math.PI;
  const randomHexColorCode = () => {
    let n = (Math.random() * 0xfffff * 1000000).toString(16);
    return '#' + n.slice(0, 6);
  };
  const randomIntArrayInRange = (min, max, n = 1) =>
    Array.from({ length: n }, () => Math.floor(Math.random() * (max - min + 1)) + min);
  const randomIntegerInRange = (min, max) => Math.floor(Math.random() * (max - min + 1)) + min;
  const randomNumberInRange = (min, max) => Math.random() * (max - min) + min;
  
  const readFileLines = filename =>
    fs
      .readFileSync(filename)
      .toString('UTF8')
      .split('\n');
  const rearg = (fn, indexes) => (...args) => fn(...indexes.map(i => args[i]));
  const recordAnimationFrames = (callback, autoStart = true) => {
    let running = true,
      raf;
    const stop = () => {
      running = false;
      cancelAnimationFrame(raf);
    };
    const start = () => {
      running = true;
      run();
    };
    const run = () => {
      raf = requestAnimationFrame(() => {
        callback();
        if (running) run();
      });
    };
    if (autoStart) start();
    return { start, stop };
  };
  const redirect = (url, asLink = true) =>
    asLink ? (window.location.href = url) : window.location.replace(url);
  const reducedFilter = (data, keys, fn) =>
    data.filter(fn).map(el =>
      keys.reduce((acc, key) => {
        acc[key] = el[key];
        return acc;
      }, {})
    );
  const reduceSuccessive = (arr, fn, acc) =>
    arr.reduce((res, val, i, arr) => (res.push(fn(res.slice(-1)[0], val, i, arr)), res), [acc]);
  const reduceWhich = (arr, comparator = (a, b) => a - b) =>
    arr.reduce((a, b) => (comparator(a, b) >= 0 ? b : a));
  const reject = (pred, array) => array.filter((...args) => !pred(...args));
  const remove = (arr, func) =>
    Array.isArray(arr)
      ? arr.filter(func).reduce((acc, val) => {
          arr.splice(arr.indexOf(val), 1);
          return acc.concat(val);
        }, [])
      : [];
  const removeNonASCII = str => str.replace(/[^\x20-\x7E]/g, '');
  const renameKeys = (keysMap, obj) =>
    Object.keys(obj).reduce(
      (acc, key) => ({
        ...acc,
        ...{ [keysMap[key] || key]: obj[key] }
      }),
      {}
    );
  const reverseString = str => [...str].reverse().join('');
  const RGBToHex = (r, g, b) => ((r << 16) + (g << 8) + b).toString(16).padStart(6, '0');
  const round = (n, decimals = 0) => Number(`${Math.round(`${n}e${decimals}`)}e-${decimals}`);
  const runAsync = fn => {
    const worker = new Worker(
      URL.createObjectURL(new Blob([`postMessage((${fn})());`]), {
        type: 'application/javascript; charset=utf-8'
      })
    );
    return new Promise((res, rej) => {
      worker.onmessage = ({ data }) => {
        res(data), worker.terminate();
      };
      worker.onerror = err => {
        rej(err), worker.terminate();
      };
    });
  };
  const runPromisesInSeries = ps => ps.reduce((p, next) => p.then(next), Promise.resolve());
  const sample = arr => arr[Math.floor(Math.random() * arr.length)];
  const sampleSize = ([...arr], n = 1) => {
    let m = arr.length;
    while (m) {
      const i = Math.floor(Math.random() * m--);
      [arr[m], arr[i]] = [arr[i], arr[m]];
    }
    return arr.slice(0, n);
  };
  const scrollToTop = () => {
    const c = document.documentElement.scrollTop || document.body.scrollTop;
    if (c > 0) {
      window.requestAnimationFrame(scrollToTop);
      window.scrollTo(0, c - c / 8);
    }
  };
  const sdbm = str => {
    let arr = str.split('');
    return arr.reduce(
      (hashCode, currentVal) =>
        (hashCode = currentVal.charCodeAt(0) + (hashCode << 6) + (hashCode << 16) - hashCode),
      0
    );
  };
  const serializeCookie = (name, val) => `${encodeURIComponent(name)}=${encodeURIComponent(val)}`;
  const serializeForm = form =>
    Array.from(new FormData(form), field => field.map(encodeURIComponent).join('=')).join('&');
  const setStyle = (el, ruleName, val) => (el.style[ruleName] = val);
  const shallowClone = obj => Object.assign({}, obj);
  const shank = (arr, index = 0, delCount = 0, ...elements) =>
    arr
      .slice(0, index)
      .concat(elements)
      .concat(arr.slice(index + delCount));
  const show = (...el) => [...el].forEach(e => (e.style.display = ''));
  const shuffle = ([...arr]) => {
    let m = arr.length;
    while (m) {
      const i = Math.floor(Math.random() * m--);
      [arr[m], arr[i]] = [arr[i], arr[m]];
    }
    return arr;
  };
  const similarity = (arr, values) => arr.filter(v => values.includes(v));
  const size = val =>
    Array.isArray(val)
      ? val.length
      : val && typeof val === 'object'
      ? val.size || val.length || Object.keys(val).length
      : typeof val === 'string'
      ? new Blob([val]).size
      : 0;
  const sleep = ms => new Promise(resolve => setTimeout(resolve, ms));
  const smoothScroll = element =>
    document.querySelector(element).scrollIntoView({
      behavior: 'smooth'
    });
  const sortCharactersInString = str => [...str].sort((a, b) => a.localeCompare(b)).join('');
  const sortedIndex = (arr, n) => {
    const isDescending = arr[0] > arr[arr.length - 1];
    const index = arr.findIndex(el => (isDescending ? n >= el : n <= el));
    return index === -1 ? arr.length : index;
  };
  const sortedIndexBy = (arr, n, fn) => {
    const isDescending = fn(arr[0]) > fn(arr[arr.length - 1]);
    const val = fn(n);
    const index = arr.findIndex(el => (isDescending ? val >= fn(el) : val <= fn(el)));
    return index === -1 ? arr.length : index;
  };
  const sortedLastIndex = (arr, n) => {
    const isDescending = arr[0] > arr[arr.length - 1];
    const index = arr.reverse().findIndex(el => (isDescending ? n <= el : n >= el));
    return index === -1 ? 0 : arr.length - index;
  };
  const sortedLastIndexBy = (arr, n, fn) => {
    const isDescending = fn(arr[0]) > fn(arr[arr.length - 1]);
    const val = fn(n);
    const index = arr
      .map(fn)
      .reverse()
      .findIndex(el => (isDescending ? val <= el : val >= el));
    return index === -1 ? 0 : arr.length - index;
  };
  const splitLines = str => str.split(/\r?\n/);
  const spreadOver = fn => argsArr => fn(...argsArr);
  const stableSort = (arr, compare) =>
    arr
      .map((item, index) => ({ item, index }))
      .sort((a, b) => compare(a.item, b.item) || a.index - b.index)
      .map(({ item }) => item);
  const standardDeviation = (arr, usePopulation = false) => {
    const mean = arr.reduce((acc, val) => acc + val, 0) / arr.length;
    return Math.sqrt(
      arr.reduce((acc, val) => acc.concat((val - mean) ** 2), []).reduce((acc, val) => acc + val, 0) /
        (arr.length - (usePopulation ? 0 : 1))
    );
  };
  const stringPermutations = str => {
    if (str.length <= 2) return str.length === 2 ? [str, str[1] + str[0]] : [str];
    return str
      .split('')
      .reduce(
        (acc, letter, i) =>
          acc.concat(stringPermutations(str.slice(0, i) + str.slice(i + 1)).map(val => letter + val)),
        []
      );
  };
  const stripHTMLTags = str => str.replace(/<[^>]*>/g, '');
  const sum = (...arr) => [...arr].reduce((acc, val) => acc + val, 0);
  const sumBy = (arr, fn) =>
    arr.map(typeof fn === 'function' ? fn : val => val[fn]).reduce((acc, val) => acc + val, 0);
  const sumPower = (end, power = 2, start = 1) =>
    Array(end + 1 - start)
      .fill(0)
      .map((x, i) => (i + start) ** power)
      .reduce((a, b) => a + b, 0);
  const symmetricDifference = (a, b) => {
    const sA = new Set(a),
      sB = new Set(b);
    return [...a.filter(x => !sB.has(x)), ...b.filter(x => !sA.has(x))];
  };
  const symmetricDifferenceBy = (a, b, fn) => {
    const sA = new Set(a.map(v => fn(v))),
      sB = new Set(b.map(v => fn(v)));
    return [...a.filter(x => !sB.has(fn(x))), ...b.filter(x => !sA.has(fn(x)))];
  };
  const symmetricDifferenceWith = (arr, val, comp) => [
    ...arr.filter(a => val.findIndex(b => comp(a, b)) === -1),
    ...val.filter(a => arr.findIndex(b => comp(a, b)) === -1)
  ];
  const tail = arr => (arr.length > 1 ? arr.slice(1) : arr);
  const take = (arr, n = 1) => arr.slice(0, n);
  const takeRight = (arr, n = 1) => arr.slice(arr.length - n, arr.length);
  const takeRightWhile = (arr, func) =>
    arr.reduceRight((acc, el) => (func(el) ? acc : [el, ...acc]), []);
  const takeWhile = (arr, func) => {
    for (const [i, val] of arr.entries()) if (func(val)) return arr.slice(0, i);
    return arr;
  };
  const throttle = (fn, wait) => {
    let inThrottle, lastFn, lastTime;
    return function() {
      const context = this,
        args = arguments;
      if (!inThrottle) {
        fn.apply(context, args);
        lastTime = Date.now();
        inThrottle = true;
      } else {
        clearTimeout(lastFn);
        lastFn = setTimeout(function() {
          if (Date.now() - lastTime >= wait) {
            fn.apply(context, args);
            lastTime = Date.now();
          }
        }, Math.max(wait - (Date.now() - lastTime), 0));
      }
    };
  };
  const times = (n, fn, context = undefined) => {
    let i = 0;
    while (fn.call(context, i) !== false && ++i < n) {}
  };
  const timeTaken = callback => {
    console.time('timeTaken');
    const r = callback();
    console.timeEnd('timeTaken');
    return r;
  };
  const toCamelCase = str => {
    let s =
      str &&
      str
        .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
        .map(x => x.slice(0, 1).toUpperCase() + x.slice(1).toLowerCase())
        .join('');
    return s.slice(0, 1).toLowerCase() + s.slice(1);
  };
  const toCurrency = (n, curr, LanguageFormat = undefined) =>
    Intl.NumberFormat(LanguageFormat, { style: 'currency', currency: curr }).format(n);
  const toDecimalMark = num => num.toLocaleString('en-US');
  const toggleClass = (el, className) => el.classList.toggle(className);
  const toHash = (object, key) =>
    Array.prototype.reduce.call(
      object,
      (acc, data, index) => ((acc[!key ? index : data[key]] = data), acc),
      {}
    );
  const toKebabCase = str =>
    str &&
    str
      .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
      .map(x => x.toLowerCase())
      .join('-');
  const tomorrow = () => {
    let t = new Date();
    t.setDate(t.getDate() + 1);
    return t.toISOString().split('T')[0];
  };
  const toOrdinalSuffix = num => {
    const int = parseInt(num),
      digits = [int % 10, int % 100],
      ordinals = ['st', 'nd', 'rd', 'th'],
      oPattern = [1, 2, 3, 4],
      tPattern = [11, 12, 13, 14, 15, 16, 17, 18, 19];
    return oPattern.includes(digits[0]) && !tPattern.includes(digits[1])
      ? int + ordinals[digits[0] - 1]
      : int + ordinals[3];
  };
  const toSafeInteger = num =>
    Math.round(Math.max(Math.min(num, Number.MAX_SAFE_INTEGER), Number.MIN_SAFE_INTEGER));
  const toSnakeCase = str =>
    str &&
    str
      .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
      .map(x => x.toLowerCase())
      .join('_');
  const toTitleCase = str =>
    str
      .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
      .map(x => x.charAt(0).toUpperCase() + x.slice(1))
      .join(' ');
  const transform = (obj, fn, acc) => Object.keys(obj).reduce((a, k) => fn(a, obj[k], k, obj), acc);
  const triggerEvent = (el, eventType, detail) =>
    el.dispatchEvent(new CustomEvent(eventType, { detail }));
  const truncateString = (str, num) =>
    str.length > num ? str.slice(0, num > 3 ? num - 3 : num) + '...' : str;
  const truthCheckCollection = (collection, pre) => collection.every(obj => obj[pre]);
  const unary = fn => val => fn(val);
  const uncurry = (fn, n = 1) => (...args) => {
    const next = acc => args => args.reduce((x, y) => x(y), acc);
    if (n > args.length) throw new RangeError('Arguments too few!');
    return next(fn)(args.slice(0, n));
  };
  const unescapeHTML = str =>
    str.replace(
      /&amp;|&lt;|&gt;|&#39;|&quot;/g,
      tag =>
        ({
          '&amp;': '&',
          '&lt;': '<',
          '&gt;': '>',
          '&#39;': "'",
          '&quot;': '"'
        }[tag] || tag)
    );
  const unflattenObject = obj =>
    Object.keys(obj).reduce((acc, k) => {
      if (k.indexOf('.') !== -1) {
        const keys = k.split('.');
        Object.assign(
          acc,
          JSON.parse(
            '{' +
              keys.map((v, i) => (i !== keys.length - 1 ? `"${v}":{` : `"${v}":`)).join('') +
              obj[k] +
              '}'.repeat(keys.length)
          )
        );
      } else acc[k] = obj[k];
      return acc;
    }, {});
  const unfold = (fn, seed) => {
    let result = [],
      val = [null, seed];
    while ((val = fn(val[1]))) result.push(val[0]);
    return result;
  };
  const union = (a, b) => Array.from(new Set([...a, ...b]));
  const unionBy = (a, b, fn) => {
    const s = new Set(a.map(fn));
    return Array.from(new Set([...a, ...b.filter(x => !s.has(fn(x)))]));
  };
  const unionWith = (a, b, comp) =>
    Array.from(new Set([...a, ...b.filter(x => a.findIndex(y => comp(x, y)) === -1)]));
  const uniqueElements = arr => [...new Set(arr)];
  const uniqueElementsBy = (arr, fn) =>
    arr.reduce((acc, v) => {
      if (!acc.some(x => fn(v, x))) acc.push(v);
      return acc;
    }, []);
  const uniqueElementsByRight = (arr, fn) =>
    arr.reduceRight((acc, v) => {
      if (!acc.some(x => fn(v, x))) acc.push(v);
      return acc;
    }, []);
  const uniqueSymmetricDifference = (a, b) => [
    ...new Set([...a.filter(v => !b.includes(v)), ...b.filter(v => !a.includes(v))])
  ];
  const untildify = str => str.replace(/^~($|\/|\\)/, `${require('os').homedir()}$1`);
  const unzip = arr =>
    arr.reduce(
      (acc, val) => (val.forEach((v, i) => acc[i].push(v)), acc),
      Array.from({
        length: Math.max(...arr.map(x => x.length))
      }).map(x => [])
    );
  const unzipWith = (arr, fn) =>
    arr
      .reduce(
        (acc, val) => (val.forEach((v, i) => acc[i].push(v)), acc),
        Array.from({
          length: Math.max(...arr.map(x => x.length))
        }).map(x => [])
      )
      .map(val => fn(...val));
  const URLJoin = (...args) =>
    args
      .join('/')
      .replace(/[\/]+/g, '/')
      .replace(/^(.+):\//, '$1://')
      .replace(/^file:/, 'file:/')
      .replace(/\/(\?|&|#[^!])/g, '$1')
      .replace(/\?/g, '&')
      .replace('&', '?');
  const UUIDGeneratorBrowser = () =>
    ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
      (c ^ (crypto.getRandomValues(new Uint8Array(1))[0] & (15 >> (c / 4)))).toString(16)
    );
  
  const UUIDGeneratorNode = () =>
    ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
      (c ^ (crypto.randomBytes(1)[0] & (15 >> (c / 4)))).toString(16)
    );
  const validateNumber = n => !isNaN(parseFloat(n)) && isFinite(n) && Number(n) == n;
  const vectorDistance = (...coords) => {
    let pointLength = Math.trunc(coords.length / 2);
    let sum = coords
      .slice(0, pointLength)
      .reduce((acc, val, i) => acc + Math.pow(val - coords[pointLength + i], 2), 0);
    return Math.sqrt(sum);
  };
  const when = (pred, whenTrue) => x => (pred(x) ? whenTrue(x) : x);
  const without = (arr, ...args) => arr.filter(v => !args.includes(v));
  const words = (str, pattern = /[^a-zA-Z-]+/) => str.split(pattern).filter(Boolean);
  const xProd = (a, b) => a.reduce((acc, x) => acc.concat(b.map(y => [x, y])), []);
  const yesNo = (val, def = false) =>
    /^(y|yes)$/i.test(val) ? true : /^(n|no)$/i.test(val) ? false : def;
  const yesterday = () => {
    let t = new Date();
    t.setDate(t.getDate() - 1);
    return t.toISOString().split('T')[0];
  };
  const zip = (...arrays) => {
    const maxLength = Math.max(...arrays.map(x => x.length));
    return Array.from({ length: maxLength }).map((_, i) => {
      return Array.from({ length: arrays.length }, (_, k) => arrays[k][i]);
    });
  };
  const zipObject = (props, values) =>
    props.reduce((obj, prop, index) => ((obj[prop] = values[index]), obj), {});
  const zipWith = (...array) => {
    const fn = typeof array[array.length - 1] === 'function' ? array.pop() : undefined;
    return Array.from({ length: Math.max(...array.map(a => a.length)) }, (_, i) =>
      fn ? fn(...array.map(a => a[i])) : array.map(a => a[i])
    );
  };
  const binarySearch = (arr, val, start = 0, end = arr.length - 1) => {
    if (start > end) return -1;
    const mid = Math.floor((start + end) / 2);
    if (arr[mid] > val) return binarySearch(arr, val, start, mid - 1);
    if (arr[mid] < val) return binarySearch(arr, val, mid + 1, end);
    return mid;
  };
  const celsiusToFahrenheit = degrees => 1.8 * degrees + 32;
  const cleanObj = (obj, keysToKeep = [], childIndicator) => {
    Object.keys(obj).forEach(key => {
      if (key === childIndicator) {
        cleanObj(obj[key], keysToKeep, childIndicator);
      } else if (!keysToKeep.includes(key)) {
        delete obj[key];
      }
    });
    return obj;
  };
  const collatz = n => (n % 2 === 0 ? n / 2 : 3 * n + 1);
  const countVowels = str => (str.match(/[aeiou]/gi) || []).length;
  const factors = (num, primes = false) => {
    const isPrime = num => {
      const boundary = Math.floor(Math.sqrt(num));
      for (var i = 2; i <= boundary; i++) if (num % i === 0) return false;
      return num >= 2;
    };
    const isNeg = num < 0;
    num = isNeg ? -num : num;
    let array = Array.from({ length: num - 1 })
      .map((val, i) => (num % (i + 2) === 0 ? i + 2 : false))
      .filter(val => val);
    if (isNeg)
      array = array.reduce((acc, val) => {
        acc.push(val);
        acc.push(-val);
        return acc;
      }, []);
    return primes ? array.filter(isPrime) : array;
  };
  const fahrenheitToCelsius = degrees => (degrees - 32) * 5/9;
  const fibonacciCountUntilNum = num =>
    Math.ceil(Math.log(num * Math.sqrt(5) + 1 / 2) / Math.log((Math.sqrt(5) + 1) / 2));
  const fibonacciUntilNum = num => {
    let n = Math.ceil(Math.log(num * Math.sqrt(5) + 1 / 2) / Math.log((Math.sqrt(5) + 1) / 2));
    return Array.from({ length: n }).reduce(
      (acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i),
      []
    );
  };
  const heronArea = (side_a, side_b, side_c) => {
      const p = (side_a + side_b + side_c) / 2
      return Math.sqrt(p * (p-side_a) * (p-side_b) * (p-side_c))
    };
  const howManyTimes = (num, divisor) => {
    if (divisor === 1 || divisor === -1) return Infinity;
    if (divisor === 0) return 0;
    let i = 0;
    while (Number.isInteger(num / divisor)) {
      i++;
      num = num / divisor;
    }
    return i;
  };
  const httpDelete = (url, callback, err = console.error) => {
    const request = new XMLHttpRequest();
    request.open('DELETE', url, true);
    request.onload = () => callback(request);
    request.onerror = () => err(request);
    request.send();
  };
  const httpPut = (url, data, callback, err = console.error) => {
    const request = new XMLHttpRequest();
    request.open("PUT", url, true);
    request.setRequestHeader('Content-type','application/json; charset=utf-8');
    request.onload = () => callback(request);
    request.onerror = () => err(request);
    request.send(data);
  };
  const isArmstrongNumber = digits =>
    (arr => arr.reduce((a, d) => a + parseInt(d) ** arr.length, 0) == digits)(
      (digits + '').split('')
    );
  const isSimilar = (pattern, str) =>
    [...str].reduce(
        (matchIndex, char) =>
            char.toLowerCase() === (pattern[matchIndex] || '').toLowerCase()
                ? matchIndex + 1
                : matchIndex,
        0
    ) === pattern.length;
  const JSONToDate = arr => {
    const dt = new Date(parseInt(arr.toString().substr(6)));
    return `${dt.getDate()}/${dt.getMonth() + 1}/${dt.getFullYear()}`;
  };
  const kmphToMph = (kmph) => 0.621371192 * kmph;
  const levenshteinDistance = (string1, string2) => {
    if (string1.length === 0) return string2.length;
    if (string2.length === 0) return string1.length;
    let matrix = Array(string2.length + 1)
      .fill(0)
      .map((x, i) => [i]);
    matrix[0] = Array(string1.length + 1)
      .fill(0)
      .map((x, i) => i);
    for (let i = 1; i <= string2.length; i++) {
      for (let j = 1; j <= string1.length; j++) {
        if (string2[i - 1] === string1[j - 1]) {
          matrix[i][j] = matrix[i - 1][j - 1];
        } else {
          matrix[i][j] = Math.min(
            matrix[i - 1][j - 1] + 1,
            matrix[i][j - 1] + 1,
            matrix[i - 1][j] + 1
          );
        }
      }
    }
    return matrix[string2.length][string1.length];
  };
  const mphToKmph = (mph) => 1.6093440006146922 * mph;
  const pipeLog = data => console.log(data) || data;
  const quickSort = ([n, ...nums], desc) =>
    isNaN(n)
      ? []
      : [
          ...quickSort(nums.filter(v => (desc ? v > n : v <= n)), desc),
          n,
          ...quickSort(nums.filter(v => (!desc ? v > n : v <= n)), desc)
        ];
  const removeVowels = (str, repl = '') => str.replace(/[aeiou]/gi, repl);
  const solveRPN = rpn => {
    const OPERATORS = {
      '*': (a, b) => a * b,
      '+': (a, b) => a + b,
      '-': (a, b) => a - b,
      '/': (a, b) => a / b,
      '**': (a, b) => a ** b
    };
    const [stack, solve] = [
      [],
      rpn
        .replace(/\^/g, '**')
        .split(/\s+/g)
        .filter(el => !/\s+/.test(el) && el !== '')
    ];
    solve.forEach(symbol => {
      if (!isNaN(parseFloat(symbol)) && isFinite(symbol)) {
        stack.push(symbol);
      } else if (Object.keys(OPERATORS).includes(symbol)) {
        const [a, b] = [stack.pop(), stack.pop()];
        stack.push(OPERATORS[symbol](parseFloat(b), parseFloat(a)));
      } else {
        throw `${symbol} is not a recognized symbol`;
      }
    });
    if (stack.length === 1) return stack.pop();
    else throw `${rpn} is not a proper RPN. Please check it and try again`;
  };
  const speechSynthesis = message => {
    const msg = new SpeechSynthesisUtterance(message);
    msg.voice = window.speechSynthesis.getVoices()[0];
    window.speechSynthesis.speak(msg);
  };
  const squareSum = (...args) => args.reduce((squareSum, number) => squareSum + Math.pow(number, 2), 0);
  
  
  module.exports = {all,allEqual,any,approximatelyEqual,arrayToCSV,arrayToHtmlList,ary,atob,attempt,average,averageBy,bifurcate,bifurcateBy,bind,bindAll,bindKey,binomialCoefficient,bottomVisible,btoa,byteSize,call,capitalize,capitalizeEveryWord,castArray,chainAsync,checkProp,chunk,clampNumber,cloneRegExp,coalesce,coalesceFactory,collectInto,colorize,compact,compactWhitespace,compose,composeRight,converge,copyToClipboard,countBy,counter,countOccurrences,createDirIfNotExists,createElement,createEventHub,CSVToArray,CSVToJSON,currentURL,curry,dayOfYear,debounce,decapitalize,deepClone,deepFlatten,deepFreeze,deepGet,deepMapKeys,defaults,defer,degreesToRads,delay,detectDeviceType,difference,differenceBy,differenceWith,dig,digitize,distance,drop,dropRight,dropRightWhile,dropWhile,elementContains,elementIsVisibleInViewport,elo,equals,escapeHTML,escapeRegExp,everyNth,extendHex,factorial,fibonacci,filterFalsy,filterNonUnique,filterNonUniqueBy,findKey,findLast,findLastIndex,findLastKey,flatten,flattenObject,flip,forEachRight,formatDuration,formToObject,forOwn,forOwnRight,fromCamelCase,functionName,functions,gcd,geometricProgression,get,getColonTimeFromDate,getDaysDiffBetweenDates,getImages,getMeridiemSuffixOfInteger,getScrollPosition,getStyle,getType,getURLParameters,groupBy,hammingDistance,hasClass,hasFlags,hashBrowser,hashNode,head,hexToRGB,hide,httpGet,httpPost,httpsRedirect,hz,indentString,indexOfAll,initial,initialize2DArray,initializeArrayWithRange,initializeArrayWithRangeRight,initializeArrayWithValues,initializeNDArray,inRange,insertAfter,insertBefore,intersection,intersectionBy,intersectionWith,invertKeyValues,is,isAbsoluteURL,isAfterDate,isAnagram,isArrayLike,isBeforeDate,isBoolean,isBrowser,isBrowserTabFocused,isDivisible,isDuplexStream,isEmpty,isEven,isFunction,isLowerCase,isNegativeZero,isNil,isNull,isNumber,isObject,isObjectLike,isOdd,isPlainObject,isPrime,isPrimitive,isPromiseLike,isReadableStream,isSameDate,isSorted,isStream,isString,isSymbol,isTravisCI,isUndefined,isUpperCase,isValidJSON,isWeekday,isWeekend,isWritableStream,join,JSONtoCSV,JSONToFile,last,lcm,longestItem,lowercaseKeys,luhnCheck,mapKeys,mapNumRange,mapObject,mapString,mapValues,mask,matches,matchesWith,maxBy,maxDate,maxN,median,memoize,merge,midpoint,minBy,minDate,minN,mostPerformant,negate,nest,nodeListToArray,none,nthArg,nthElement,objectFromPairs,objectToPairs,observeMutations,off,offset,omit,omitBy,on,once,onUserInputChange,orderBy,over,overArgs,pad,palindrome,parseCookie,partial,partialRight,partition,percentile,permutations,pick,pickBy,pipeAsyncFunctions,pipeFunctions,pluralize,powerset,prefix,prettyBytes,primes,promisify,pull,pullAtIndex,pullAtValue,pullBy,radsToDegrees,randomHexColorCode,randomIntArrayInRange,randomIntegerInRange,randomNumberInRange,readFileLines,rearg,recordAnimationFrames,redirect,reducedFilter,reduceSuccessive,reduceWhich,reject,remove,removeNonASCII,renameKeys,reverseString,RGBToHex,round,runAsync,runPromisesInSeries,sample,sampleSize,scrollToTop,sdbm,serializeCookie,serializeForm,setStyle,shallowClone,shank,show,shuffle,similarity,size,sleep,smoothScroll,sortCharactersInString,sortedIndex,sortedIndexBy,sortedLastIndex,sortedLastIndexBy,splitLines,spreadOver,stableSort,standardDeviation,stringPermutations,stripHTMLTags,sum,sumBy,sumPower,symmetricDifference,symmetricDifferenceBy,symmetricDifferenceWith,tail,take,takeRight,takeRightWhile,takeWhile,throttle,times,timeTaken,toCamelCase,toCurrency,toDecimalMark,toggleClass,toHash,toKebabCase,tomorrow,toOrdinalSuffix,toSafeInteger,toSnakeCase,toTitleCase,transform,triggerEvent,truncateString,truthCheckCollection,unary,uncurry,unescapeHTML,unflattenObject,unfold,union,unionBy,unionWith,uniqueElements,uniqueElementsBy,uniqueElementsByRight,uniqueSymmetricDifference,untildify,unzip,unzipWith,URLJoin,UUIDGeneratorBrowser,UUIDGeneratorNode,validateNumber,vectorDistance,when,without,words,xProd,yesNo,yesterday,zip,zipObject,zipWith,binarySearch,celsiusToFahrenheit,cleanObj,collatz,countVowels,factors,fahrenheitToCelsius,fibonacciCountUntilNum,fibonacciUntilNum,heronArea,howManyTimes,httpDelete,httpPut,isArmstrongNumber,isSimilar,JSONToDate,kmphToMph,levenshteinDistance,mphToKmph,pipeLog,quickSort,removeVowels,solveRPN,speechSynthesis,squareSum}