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It would be great feature. For example, when building packages with swc, and still need typechecks between packages.

My solution on monorepo i’m working on, with 20+ packages.

turbo.json

{
  "pipeline": {
    "build": {
      "dependsOn": ["types", "^build"],
      "outputs": ["dist/**", ".next/**"]
    },
    "types": {
      "cache": false,
      "outputs": ["typings/**"]
    },
    "watch": {
      "cache": false
    }
  }
}

root package.json

{
  "name": "root",
  "private": true,
  "scripts": {
    "build": "turbo run build",
    "watch": "turbo run watch --parallel"
  }
}

packages/my-helpers/package.json

{
  "name": "my-helpers",
  "scripts": {
    "types": "tsc --emitDeclarationsOnly",
    "watch": "chokidar 'src/**/*.js' 'src/**/*.ts' -c 'pnpm -wc exec turbo run types  --filter=...^my-helpers'",
  }
}

This solution is nice, because i can see, that changes in one package will affect another package in scope.

There are some drawbacks in this:

  • can’t cache types pipeline
  • must write package name inside watch script
  • output logs are not nice

my-helpers:watch: • Packages in scope: @admin/web
my-helpers:watch: • Running types in 5 packages
my-helpers:watch: • Running types in 5 packages
my-helpers:watch: @admin/web:types: cache miss, executing 25984f71faae504a
...

As i see it. Would be nice something like this in turbo.

turbo.json

{
  "pipeline": {
    "build": {
      "dependsOn": ["types", "^build"],
      "outputs": ["dist/**", ".next/**"]
    },
    "types": {
      "outputs": ["typings/**"]
    }
  }
}

root package.json

{
  "name": "root",
  "private": true,
  "scripts": {
    "watch": "turbo run types --watch"
  }
}

packages/my-lib/package.json

{
  "name": "my-lib",
  "scripts": {
    "types": "tsc --emitDeclarationsOnly"
  },
  "turboWatch": [
    "src/**/*.js",
    "src/**/*.ts",
  ]
}

Watch mode, should:

  • run types script every time, when files described by turboWatch changes
  • update types cache, on change, if necessary

Then running build pipeline will have types already run from cache.

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