is-implemented.js 204 Bytes
Newer Older
YazhouChen's avatar
YazhouChen committed
1 2 3 4 5 6 7 8
"use strict";

var str = "razdwatrzy";

module.exports = function () {
	if (typeof str.contains !== "function") return false;
	return (str.contains("dwa") === true) && (str.contains("foo") === false);
};