_createSet.js
 1  var Set = require('./_Set'),
 2      noop = require('./noop'),
 3      setToArray = require('./_setToArray');
 4  
 5  /** Used as references for various `Number` constants. */
 6  var INFINITY = 1 / 0;
 7  
 8  /**
 9   * Creates a set object of `values`.
10   *
11   * @private
12   * @param {Array} values The values to add to the set.
13   * @returns {Object} Returns the new set.
14   */
15  var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {
16    return new Set(values);
17  };
18  
19  module.exports = createSet;