set method not working when passing a key and value

[hariyebk]

What version of Hono are you using?

4.2.1

What runtime/platform is your app running on?

bun

What steps can reproduce the bug?

app.use(async (c, next) => { c.set('message', 'Hono is cool!!') await next() }) app.get("/", (c) => { const message = c.get("message") return c.text(${message}) })

What is the expected behavior?

It must work fine when passing the key "message" and the value "honor is cool!"

What do you see instead?

underneath the key, I encountered an error: "No overload matches this call.
Overload 1 of 2, '(key: never, value: never): void', gave the following error".

Additional information

No response

[yusukebe]

Hi @hariyebk

It's not a bug. Try to pass the generics to new Hono:

type Variables = {
  message: string
}

const app = new Hono<{
  Variables: Variables
}>()