Edit File: es6.string.starts-with.js
// 21.1.3.18 String.prototype.startsWith(searchString [, position ]) 'use strict'; var $export = require('./_export'); var toLength = require('./_to-length'); var context = require('./_string-context'); var STARTS_WITH = 'startsWith'; var $startsWith = ''[STARTS_WITH]; $export($export.P + $export.F * require('./_fails-is-regexp')(STARTS_WITH), 'String', { startsWith: function startsWith(searchString /* , position = 0 */) { var that = context(this, searchString, STARTS_WITH); var index = toLength(Math.min(arguments.length > 1 ? arguments[1] : undefined, that.length)); var search = String(searchString); return $startsWith ? $startsWith.call(that, search, index) : that.slice(index, index + search.length) === search; } });
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