Function handleRedirects

api/src/plugins/auth-dev.ts:14–23

(req: FastifyRequest, reply: FastifyReply)

  str.endsWith('/') ? str.slice(0, -1) : str;

async function handleRedirects(req: FastifyRequest, reply: FastifyReply) {
  const params = getRedirectParams(req);
  const { origin, pathPrefix } = params;
  const returnTo = trimTrailingSlash(params.returnTo);
  const landingUrl = getPrefixedLandingPath(origin, pathPrefix);

  return await reply.redirect(
    haveSamePath(landingUrl, returnTo) ? `${returnTo}/learn` : returnTo
  );
}

/**
 * Fastify plugin for dev authentication.