2 var $ = require('../internals/export');
3 var uncurryThis = require('../internals/function-uncurry-this');
4 var notARegExp = require('../internals/not-a-regexp');
5 var requireObjectCoercible = require('../internals/require-object-coercible');
6 var toString = require('../internals/to-string');
7 var correctIsRegExpLogic = require('../internals/correct-is-regexp-logic');
9 var stringIndexOf = uncurryThis(''.indexOf);
11 // `String.prototype.includes` method
12 // https://tc39.es/ecma262/#sec-string.prototype.includes
13 $({ target: 'String', proto: true, forced: !correctIsRegExpLogic('includes') }, {
14 includes: function includes(searchString /* , position = 0 */) {
15 return !!~stringIndexOf(
16 toString(requireObjectCoercible(this)),
17 toString(notARegExp(searchString)),
18 arguments.length > 1 ? arguments[1] : undefined