File extension required in serverMiddleware

Describe the bug File extension .ts is required in nuxt.config.ts serverMiddleware

To Reproduce Steps to reproduce the behavior:

1. Create a nuxt typerscript project
2. Create a file server/middleware.ts
3. Set it to nuxt.config.ts like

{
serverMiddleware: [
    '~/server/middleware' // without extension
  ]
}

1. Build with node ./node_modules/\@nuxt/typescript-runtime/bin/nuxt-ts.js build
2. Start with node ./node_modules/\@nuxt/typescript-runtime/bin/nuxt-ts.js start
3. See error

Error: Cannot find module ‘~/server/middleware’

Expected behavior This should work

[kevinmarrec]

Workarounds

Workaround N°1 Set @nuxt/typescript-build in modules instead of buildModules

Workaround N°2 (Recommended) Force ts extension in extensions array of configuration :

export default {
  extensions: ['ts']
}

Workaround N°3 Force ts extension in extensions array of configuration :

export default {
  extensions: ['ts']
}

Fix proposal

Use new CLI hooks (starting Nuxt 2.9.1), especially config one, to make nuxt-ts ensure that ts extension is registered, even when using nuxt-ts start.

[andywampir]

It seems new version doesn’t works for me. I’m still getting error Cannot find module: '~/server/router'.

Versions

nuxt: 2.10.2 @nuxt/typescript-build: 0.3.2 @nuxt/typescript-runtime: 0.2.2 node: 12.13.0

I got help in Discord server. Alias won’t be recognized, cause it’s runs outside webpack environment. So in my case i need to use import router from '../server/router'.