art-webpack/src/polyfills/array-filter.js

/* tslint:disable */
/* eslint-disable no-extend-native */
/* eslint-disable valid-typeof */

if (!Array.prototype.filter)
  Array.prototype.filter = function (func, thisArg) {
    if (!((typeof func === 'Function' || typeof func === 'function') && this))
      throw new TypeError();

    var len = this.length >>> 0,
      res = new Array(len), // preallocate array
      t = this, c = 0, i = -1;
    if (thisArg === undefined)
      while (++i !== len)
        // checks to see if the key was set
        if (i in this)
          if (func(t[i], i, t))
            res[c++] = t[i];
          else
            while (++i !== len)
              // checks to see if the key was set
              if (i in this)
                if (func.call(thisArg, t[i], i, t))
                  res[c++] = t[i];

    res.length = c; // shrink down array to proper size
    return res;
  };