Partial watch mode

[wujekbogdan]

Goals

Being able to use a bundler-based watcher for a certain monorepo package and turbo watch for all its monorepo dependencies.

Non-goals

No response

Background

I have a monorepo with several apps that rely on workspace dependencies. Thanks to the newly introduced watch mode, I can run a dev mode for my app that recompiles whenever its monorepo dependencies change, which is great.

The thing is, for the app I'm developing, I would rather use the built-in watcher (because of hot reloading and other goodies) rather than the turbo watch features. For everything else, I would like to rely on turbo watch.

E.g., when running:

turbo watch dev --filter=@my-namespace/my-app

that has a dev task defined as:

"dev": "tsup --watch --onSuccess 'node dist/index.js'`

I would like the @my-namespace/my-app app to be excluded from turbo watch because it already has a bundler that handles watching. However, I would still like all its monorepo dependencies to be re-built on change thanks to turbo watch.

Proposal

I'm not sure what the API for this feature would look like. I think we would need an additional CLI flag or maybe a watch blacklist in the turbo.json file.

[ThallesP]

I really would need this feature! In my case I would like that my Prisma package auto builds and compiles when any changes happens inside the package.