config.js

/**
 * Copyright 2016 The AMP HTML Authors. All Rights Reserved.
 *
 * 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.
 */

/**
 * Allows for runtime configuration. Internally, the runtime should
 * use the src/config.js module for various constants. We can use the
 * AMP_CONFIG global to translate user-defined configurations to this
 * module.
 * @type {!Object<string, string>}
 */
const env = self.AMP_CONFIG || {};

const thirdPartyFrameRegex = typeof env['thirdPartyFrameRegex'] == 'string' ?
  new RegExp(env['thirdPartyFrameRegex']) : env['thirdPartyFrameRegex'];

const cdnProxyRegex = typeof env['cdnProxyRegex'] == 'string' ?
  new RegExp(env['cdnProxyRegex']) : env['cdnProxyRegex'];

/** @type {!Object<string, string|boolean|RegExp>} */
export const urls = {
  thirdParty: env['thirdPartyUrl'] || 'https://3p.ampproject.net',
  thirdPartyFrameHost: env['thirdPartyFrameHost'] || 'ampproject.net',
  thirdPartyFrameRegex: thirdPartyFrameRegex || /^d-\d+\.ampproject\.net$/,
  cdn: env['cdnUrl'] || 'https://cdn.ampproject.org',
  /* Note that cdnProxyRegex is only ever checked against origins
   * (proto://host[:port]) so does not need to consider path
   */
  cdnProxyRegex: cdnProxyRegex ||
      /^https:\/\/([a-zA-Z0-9_-]+\.)?cdn\.ampproject\.org$/,
  localhostRegex: /^https?:\/\/localhost(:\d+)?$/,
  errorReporting: env['errorReportingUrl'] ||
      'https://amp-error-reporting.appspot.com/r',
  localDev: env['localDev'] || false,
};

export const config = {
  urls,
};