nitroApp.h3App.use() isn't working

[modelair]

Environment

Nuxt project info: 11:41:02

---

• Operating System: Darwin
• Node Version: v16.15.1
• Nuxt Version: 3.0.0-rc.6
• Package Manager: [email protected]
• Builder: vite

---

Reproduction

1. Create a nuxt3 app
2. Create a nitro plugin
3. Import it in nuxt.config.ts

// ~/server/nitro/plug.ts
export default (nitroApp) => {
    nitroApp.h3App.use((event) => console.log('hello nitro')) // logs nothing
   
}

// nuxt.config.ts
export default defineNuxtConfig({
    nitro: {
        plugins: ['~/server/nitro/plug.ts']
    }
})

Describe the bug

Nitro plugin h3App.use() isn't works

Additional context

But simple h3app works!

import { createApp } from 'h3'
import { createServer } from 'http'

const app = createApp()
createServer(app).listen(process.env.PORT || 3000)

app.use((event) => console.log('hello'))  // logs 'hello'

I found this when i want try to use express-session with h3 and nuxt3.

import session from 'express-session'
export default async (_nitroApp) => { 
_nitroApp.h3App.use(session({}))
}

[HomWang]

Maybe you should use https://nitro.unjs.io/guide/storage.html#defining-mountpoints

[modelair]

@516310460 not looks like solution

[HomWang]

There is no such document now, but I am not sure whether this function is experimental. I will submit a document later to see if it will be included

[HomWang]

@danielroe @pi0 nitro is it experimental

[HomWang]

@modelair See link: https://github.com/nuxt/framework/pull/6507

[danielroe]

The issue is that you are adding a route after a catchall middleware (nuxt rendering) so it will never be hit.

This is similar to https://github.com/nuxt/framework/issues/5527 and perhaps there is a use case for adding middleware in the same way that you can now to nitroApp.router.use('/some/route', handler).

[HomWang]

The issue is that you are adding a route after a catchall middleware (nuxt rendering) so it will never be hit.

This is similar to #5527 and perhaps there is a use case for adding middleware in the same way that you can now to nitroApp.router.use('/some/route', handler).

nitro is it experimental