a turborepo pipeline task that depends on a root package.json task that does not execute in each package

[dagda1]

I have a root package.json task that does not execute in every package that calls yarn tsc.

Currently, I have it as a prebuild script in the root package.json:

"prebuild": "yarn tsc",

Is there anyway to specify this as a dependsOn element of build in the turborepo.json?

If I add tsc like below then it will get executed in the each package which is not what I want.

"pipeline": {
  "tsc": {
    "dependsOn": ["generate"],
    "outputs": ["dist-types/**"]
  },
  "build": {
    "dependsOn": ["tsc", "^build"],
    "outputs": ["dist/**"]
  },

[minkimcello]

Are you trying to prevent packages from running yarn tsc even though it can? Or are you trying to avoid running yarn tsc for packages that do not have the script?

If it's the latter, you don't have to worry. Unlike yarn workspaces run x, turborepo won't error out if a script isn't available for certain packages.

if you're trying to prevent certain packages from running the script even though it could, you can use the --filter flag:

turbo run build --filter=!@foo/bar

[dagda1]

I want it to run but I cannot use it in a dependsOn array because it is a root level script. I found this PR that is not merged yet but hopefully will.

[minkimcello]

Oh right. I imagine a temporary workaround for the time being could be to specify a root script like this:

"tscBeforeBuild": "yarn prebuild && yarn turbo run build"

[dagda1]

@minkimcello that might work, thanks.

[anthonyshew]

You can depend on a root task using //#prebuild

    "dependsOn": ["//#prebuild"]

[alextbok]

Thanks! I found this fairly deep down in the documentation so linking to where I found it for posterity: https://turbo.build/messages/missing-root-task-in-turbo-json#solution