SpoonmanS
tRPC•13mo ago
Spoonman

Inconsistent types for mutation return type

I have a 
signIn
 mutation that returns:

{
  accessToken: string;
  refreshToken: string;
}


  1. When I pull the types from the 
    AppRouter
     in the server (separate API with Express.js), the proper type is inferred.
  2. When I pull the types of the mutation from the 
    AppRouter
    , but this time from my client, the wrong type is inferred (I get 
    never
     instead of 
    string
     for both keys)
  3. When I pull the types via 
    Awaited<ReturnType<typeof trpc.signIn.mutate>>
     or by directly invoking the function, the type turns to 
    {}
See screenshots for some more details.

These are the packages I have installed:

"@tanstack/react-query": "^5.61.0",
"@trpc/client": "^11.0.0-rc.643",
"@trpc/react-query": "^11.0.0-rc.643",
"@trpc/server": "^11.0.0-rc.643",


Why are my mutation output types getting lost? Thanks!
Screenshot_2024-11-30_at_11.07.33_AM.png
Screenshot_2024-11-30_at_11.11.05_AM.png
Screenshot_2024-11-30_at_11.11.17_AM.png
Was this page helpful?