es.array.includes.js
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es.array.includes.js
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	'use strict';
	var $ = require('../internals/export');
	var $includes = require('../internals/array-includes').includes;
	var fails = require('../internals/fails');
	var addToUnscopables = require('../internals/add-to-unscopables');

	// FF99+ bug
	var BROKEN_ON_SPARSE = fails(function () {
	return !Array(1).includes();
	});

	// `Array.prototype.includes` method
	// https://tc39.es/ecma262/#sec-array.prototype.includes
	$({ target: 'Array', proto: true, forced: BROKEN_ON_SPARSE }, {
	includes: function includes(el /* , fromIndex = 0 */) {
	return $includes(this, el, arguments.length > 1 ? arguments[1] : undefined);
	}
	});

	// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
	addToUnscopables('includes');