初始化

康凯

2022-05-20 aa4c235a8ca67ea8b731f90c951a465e92c0a865

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'use strict';
var $ = require('../internals/export');
var IS_PURE = require('../internals/is-pure');
var anObject = require('../internals/an-object');
var getMapIterator = require('../internals/get-map-iterator');
var sameValueZero = require('../internals/same-value-zero');
var iterate = require('../internals/iterate');
 
// `Map.prototype.includes` method
// https://github.com/tc39/proposal-collection-methods
$({ target: 'Map', proto: true, real: true, forced: IS_PURE }, {
  includes: function includes(searchElement) {
    return iterate(getMapIterator(anObject(this)), function (key, value) {
      if (sameValueZero(value, searchElement)) return iterate.stop();
    }, undefined, true, true).stopped;
  }
});