outputStandalone breaking with middleware

[nil1511]

What version of Next.js are you using?

12.0.8-canary.13

What version of Node.js are you using?

16.13.1

What browser are you using?

Chrome

What operating system are you using?

macOS

How are you deploying your application?

Vercel

Describe the Bug

When using experimental.outputStandalone with middlewares, yarn build is breaking. since nft.json file is not generated for middleware.

[Error: ENOENT: no such file or directory, open '~/next.js/examples/with-docker/.next/server/pages/_middleware.js.nft.json'] {

Expected Behavior

yarn build to succeed and tracing files for middleware to be generated.

To Reproduce

create pages/_middleware.js in with-docker example and then yarn build is breaking

import { NextResponse } from 'next/server'

export function middleware(req, ev) {
  return NextResponse.next()
}

[nil1511]

Hi @ijjk and @styfle, will middleware always inline external dependencies? if so, can we exclude middleware while copying trace files

await copyTracedFiles(
            dir,
            distDir,
            [...pageKeys.filter(page=> !page.match(MIDDLEWARE_ROUTE))],
            outputFileTracingRoot,
            requiredServerFiles.config
          )

[balazsorban44]

This issue has been automatically locked due to no recent activity. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.