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/*
 * Copyright 2016 The Closure Compiler Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @fileoverview
 * @suppress {uselessCode}
 */

'require util/objectcreate';

$jscomp.construct =
  (typeof Reflect != 'undefined' && Reflect.construct) ||
  /**
   * Polyfill for Reflect.construct() method:
   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Reflect/construct
   *
   * Calls a constructor as with the 'new' operator.
   * TODO(sdh): how to type 'target' with (new: TARGET) if opt_newTarget missing?
   *
   * @param {function(new: ?, ...?)} target The constructor to call.
   * @param {!Array} argList The arguments as a list.
   * @param {function(new: TARGET, ...?)=} opt_newTarget The constructor to instantiate.
   * @return {TARGET} The result of the function call.
   * @template TARGET
   * @suppress {reportUnknownTypes}
   */
  function(target, argList, opt_newTarget) {
      // if (arguments.length < 3 || opt_newTarget == target) {
      //   return new target(...argList);
      // }
      if (opt_newTarget === undefined) opt_newTarget = target;
      var proto = opt_newTarget.prototype || Object.prototype;
      var obj = $jscomp.objectCreate(proto);
      var apply = Function.prototype.apply;
      var out = apply.call(target, obj, argList);
      return out || obj;
    };