@feathersjs/authentication-oauth1/lib/express/error-handler.js

A Feathers OAuth1 authentication strategy

module.exports = function OAuthErrorHandler (options = {}) {
  return function (err, req, res, next) {
    // Set __redirect so that later middleware (e.g., auth.express.failureRedirect) can redirect accordingly
    if (options.failureRedirect) {
      res.hook = { data: {} };
      Object.defineProperty(res.hook.data, '__redirect', { value: { status: 302, url: options.failureRedirect } });
    }

    next(err);
  };
};