message: void is preferred to undefined
diff: @@ -60,7 +60,7 @@ export function fetchAppManifest(authRequest) {
  *
  * @param {String} authRequest encoded and signed authentication request token
  * @param {String} authResponse encoded and signed authentication response token
  - * @return {undefined}
  + * @return {void}
  * @throws {Error} if there is no redirect uri
  * @private
  */
  