Setting response schema for c.json()

[kofta999]

Hello, I'm new to Hono and I was wondering if there's a way to set a response schema to c.json() or to set a global schema for all json responses

I found out I could use

interface CustomResponse {
  success: boolean;
  message: string;
}

return c.json<CustomResponse, 400>({ success: false, message: "error" }, 400);

I don't mind typing the interface every time but retyping the status code doesn't seem a good idea, and if I removed status code from the generic TypeScript throws an error, and if I removed it from the parameters it just returns the default 200.

[yusukebe]

Hi @kofta999

Unfortunately, we don't have a public API to specify response Types explicitly, so there is nothing to do about your question.

[kofta999]

Understood, thank you for answering!

[yusukebe]

Regarding validating a response, we have some idea, though it's not implemented: #2439

[kofta999]

Thank you, got the main idea of it, but what I was thinking about was more on the type level than the runtime, just to easily type my response fields for better DX.

Will probably then type it using the generics like I did before. Will also share if I found a better option. Thanks again!