Middleware types not working with NodeNext resolution

[pawelblaszczyk5]

I'm using React Router as a...

framework

Reproduction

https://github.com/pawelblaszczyk5/invalid-new-middleware-types-node-next

1. Go to app/routes/home.tsx
2. Observe context being typed incorrectly despite middleware being enabled and global type augmentation done

I think that's similar cause as this - #12715

If you change the module resolution to e.g. Bundler it will work properly.

System Info

System:
    OS: macOS 15.3.2
    CPU: (8) arm64 Apple M1 Pro
    Memory: 406.81 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.10.0 - ~/.local/state/fnm_multishells/3848_1743953207334/bin/node
    Yarn: 1.22.19 - ~/.local/state/fnm_multishells/3848_1743953207334/bin/yarn
    npm: 10.2.3 - ~/.local/state/fnm_multishells/3848_1743953207334/bin/npm
    pnpm: 8.15.8 - ~/.local/state/fnm_multishells/3848_1743953207334/bin/pnpm
    bun: 1.1.33 - ~/.bun/bin/bun
  Browsers:
    Chrome: 134.0.6998.166
    Edge: 120.0.2210.121
    Safari: 18.3.1
  npmPackages:
    @react-router/dev: ^7.5.0 => 7.5.0 
    @react-router/node: ^7.5.0 => 7.5.0 
    @react-router/serve: ^7.5.0 => 7.5.0 
    react-router: ^7.5.0 => 7.5.0 
    vite: ^5.4.11 => 5.4.17

Used Package Manager

pnpm

Expected Behavior

context parameter is properly typed due to augmentation in react-router.config.ts

Actual Behavior

context is incorrectly typed (still AppLoadContext) when using NodeNext

[shmuli9]

I am seeing the same issue but I am using the bundler option in my tsconfig

Possibly this is addressed by #13381

[pawelblaszczyk5]

I am seeing the same issue but I am using the bundler option in my tsconfig

Possibly this is addressed by #13381

The linked issue is different one, that impacts that some types didn’t use the future flag branching. This issue is that this branching isn’t respected in some parts of code when using specific resolution 😃

[shmuli9]

The linked issue is different one, that impacts that some types didn’t use the future flag branching. This issue is that this branching isn’t respected in some parts of code when using specific resolution 😃

Ye, I tested with 7.5.1-pre.0 and it didn't resolve the issue. That being said, I am not getting the correct types even when using the bundler tsconfig

[pawelblaszczyk5]

I’m pretty sure it should work. Do you have some reproduction? Did you enable the type level feature flag and the file is in the same TS project in case you use references?

[shmuli9]

Thanks - I am using the cloudflare template and it uses tsconfig projects.
For some reason they didn't include react-router.config.ts in the tsconfig so my type augmentation wasn't being picked up