[turborepo] ERROR run failed: error preparing engine: Missing task definition, configure "build" or "___ROOT___#build" in turbo.json

[weyert]

What version of Turborepo are you using?

1.7.0-canary.3

What package manager are you using / does the bug impact?

npm

What operating system are you using?

Mac

Describe the Bug

I tried to upgrade turbo from version 1.6.3 to 1.7.0-canary.3 and since the upgrade it's throwing the following error:

Running local turbo binary in /Users/weyert/Development/Projects/experiment/node_modules/turbo/bin/turbo

 ERROR  run failed: error preparing engine: Missing task definition, configure "build" or "___ROOT___#build" in turbo.json

while with 1.6.3 it runs as expected:

 Tasks:    1 successful, 2 total
Cached:    0 cached, 2 total
  Time:    12.478s 

Expected Behavior

I would expect that the command turbo run build would succeed running

To Reproduce

Not available yet

Reproduction Repo

No response

[weyert]

Looks like it happens when I have this in the root's package.json:

  "workspaces": {
    "packages": [
      "packages/*",
      "projects/*",
      "examples/*"
    ]
  },

In 1.6.3 it gives an error, which I missed, but in 1.7.0 it acts weird:
1.6.3:

 WARNING  Issues occurred when constructing package graph. Turbo will function, but some features may not be available:  1 error occurred:
        * json: cannot unmarshal object into Go struct field NpmPackage.packages.workspaces of type []string

in 1.7.0:

 ERROR  run failed: error preparing engine: Missing task definition, configure "build" or "___ROOT___#build" in turbo.json

everything starts work when I change the above to:

  "workspaces": [
      "packages/*",
      "projects/*",
      "examples/*"
  ],

[tknickman]

@weyert parsing error should be fixed in the latest canary and will go out with our next release

[weyert]

Great thank you!

[tanzeelrana]

in my case i had the package-lock.json file generated due to a bad command i ran earlier. when i removed the lock file and ran turbo command, it worked :)

[tinytelly]

for me it was doing this:

1. remove the package-lock.json
2. remove the yarn.lock
3. npm install (puts back a package-lock.json)
4. turbo build
5. works now :-)