1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 /** 6 * @fileoverview Assertion support. 7 */ 8 9 /** 10 * Simple common assertion API 11 * @param {*} condition The condition to test. Note that this may be used to 12 * test whether a value is defined or not, and we don't want to force a 13 * cast to Boolean. 14 * @param {string=} opt_message A message to use in any error. 15 */ 16 function assert(condition, opt_message) { 17 'use strict'; 18 if (!condition) { 19 var msg = 'Assertion failed'; 20 if (opt_message) 21 msg = msg + ': ' + opt_message; 22 throw new Error(msg); 23 } 24 } 25
