/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

'use strict';

if (process.env.npm_execpath.indexOf('yarn') === -1) {
  throw new Error(
      'Please use Yarn instead of NPM to install dependencies. See: https://yarnpkg.com/lang/en/docs/install/');
}
