Object.defineProperty(Array.prototype, "find", {
  value: function (predicate) {
    if (this == null) {
      throw new TypeError('"this" is null or not defined');
    }
    var o = Object(this);
    var len = o.length >>> 0;
    if (typeof predicate !== "function") {
      throw new TypeError("predicate must be a function");
    }
    var thisArg = arguments[1];
    var k = 0;
    while (k < len) {
      var kValue = o[k];
      if (predicate.call(thisArg, kValue, k, o)) {
        return kValue;
      }
      k++;
    }
    return undefined;
  },
});