Mugetsu
Mugetsu•2y ago

Express tRPC NextJS

I've custom expressjs server with Nextjs + im using internal package for handling OneLogin (OIDC) hooked as express middleware which runs. before the Nextjs trpc. I encounter a problem where I do fire a request api call via trpc query or mutation and the OIDC middleware catches that the request is 401 trpc throws on me that TRPCClientError: Unexpected token 'U', "Unauthorized" is not valid JSON if I change the response of the middleware as a json instead of text something like 
app.use((req, res, next) => {
  if (/* some condition checking for the cookie */) {
    next();
  } else {
    // Respond with a 401 status and a JSON body
    res.status(401).json({ error: "Unauthorized" });
  }
});
app.use((req, res, next) => {
  if (/* some condition checking for the cookie */) {
    next();
  } else {
    // Respond with a 401 status and a JSON body
    res.status(401).json({ error: "Unauthorized" });
  }
});
Then I get app-index.js:31 TRPCClientError: Unexpected non-whitespace character after JSON at position 14 (line 1 column 15) with tRPC. What do i need to do to handle the 401 via trpc and be able to redirect the user to login "client side redirect at this point"
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