es6.string.includes.js
479 Bytes
// 21.1.3.7 String.prototype.includes(searchString, position = 0)
'use strict';
var $export = require('./$.export')
, context = require('./$.string-context')
, INCLUDES = 'includes';
$export($export.P + $export.F * require('./$.fails-is-regexp')(INCLUDES), 'String', {
includes: function includes(searchString /*, position = 0 */){
return !!~context(this, searchString, INCLUDES)
.indexOf(searchString, arguments.length > 1 ? arguments[1] : undefined);
}
});