Any idea to default/enforce JSON responses?

[MaximeBernard]

Hi, I'm coming from koa, played with fastify and they both return JSON responses by default.

I was wondering if I could do something similar in Hono?

My ideal would have been a

const app = new Hono({ jsonOnly: true });

But maybe I can do this with a middleware?

Out of curiosity, why do you need to c.json everywhere?

[EdamAme-x]

hi @MaximeBernard
Yes, you can use middleware.
Middleware can be placed at the tail end, and you can create middleware that checks if the response is in json format and throws an error if it is not.

[MaximeBernard]

What do you think about

import { createMiddleware } from 'hono/factory'

export const jsonMiddleware = () => {
  return createMiddleware(async (c, next) => {
    return c.json(await next());
  })
}

?

That way, I had in mind, I could do

app.get('/posts', () => [{id: 1, title: "Hello"}, {id: 2, title: "World"]);

[EdamAme-x]

sorry, I understand just now.

[EdamAme-x]

hmm...
I think that is possible.
But, we have some breaking problems.
That way of writing is similar to elysia.js.
In Hono, that kind of return is impossible due to types.
Perhaps you can do it by playing with the response in middleware, but I don't recommend it because of the types issue.

[MaximeBernard]

I see, thank you for your time 👍