Function deserializeMessage

src/core/3p-frame-messaging.js:96–110

(message)

 * @return {?JsonObject|undefined}
 */
export function deserializeMessage(message) {
  if (!isAmpMessage(message)) {
    return null;
  }

  devAssertString(message);

  const startPos = message.indexOf('{');
  devAssert(startPos != -1, 'JSON missing in %s', message);
  return tryParseJson(message.substr(startPos), (e) => {
    rethrowAsync(
      new Error(`MESSAGING: Failed to parse message: ${message}\n${e.message}`)
    );
  });
}

/**
 *  Returns true if message looks like it is an AMP postMessage