[turborepo] fails to parse workspaces from package.json

[enricoangelon]

What version of Turborepo are you using?

1.6.3

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

npm

What operating system are you using?

Windows

Describe the Bug

When running the build command, I am getting this log from turbo:
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

That's probably because my workspaces entry is not made of []string but it's formed like that instead:
"workspaces": { "packages": [ "packages/**" ] }

Expected Behavior

Turbo properly parses packages entry.

To Reproduce

Setup a monorepo project using the same "workspaces" entry structure given in the Bug description.

Reproduction Repo

https://github.com/JSPrismarine/JSPrismarine

[tknickman]

Hey @HerryYT! Thanks for the report. I took a quick look through how NPM parses workspaces - interestingly, it does look like they allow an Array of strings at either workspaces.packages, or workspaces (source).

Currently we only support:
workspaces: Array<string> and not workspaces: { packages: Array<string> }.

We'll get that fixed up, but to get unblocked in the meantime you can swap your package.json workspace declaration to use the more common (and functionally equivalent):
workspaces: Array<string>.

[tknickman]

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