[BUG]: `--group-by-package` does not work in a monorepo without a root tsconfig

[KostyaTretyak]

Describe the bug

All my tsconfig files are in packages/*, and it makes no sense to keep tsconfig in the root. And this is not work:

dpdm --no-warning --no-tree -T --group-by-package './packages/*/src/index.ts'

To Reproduce

Run this command from root folder in monorepository.

Expected behavior

Cyclic dependencies should be found.

Additional context

Two working versions with other options:

# 1
dpdm --no-warning --no-tree -T --cwd packages/core src
# 2
dpdm --no-warning --no-tree -T --tsconfig packages/core/tsconfig.json packages/core/src

[acrazing]

How do you configure your type check command (like tsc -p ?)? A shared tsconfig.json is required for dpdm to resolve path alias. But if your build tool doesn't need it, dpdm can also work without it.

[KostyaTretyak]

What do you mean by "type check command"? I guess you're talking about the build command? In my monorepo I use TypeScript Project References and tsc -b packages/tsconfig.build.json. In this file I have this config:

{
  "files": [],
  "references": [
    { "path": "authjs/tsconfig.build.json" },
    { "path": "body-parser/tsconfig.build.json" },
    { "path": "core/tsconfig.build.json" },
    { "path": "cors/tsconfig.build.json" },
    { "path": "i18n/tsconfig.build.json" },
    { "path": "jwt/tsconfig.build.json" },
    { "path": "openapi/tsconfig.build.json" },
    { "path": "openapi-validation/tsconfig.build.json" },
    { "path": "rest/tsconfig.build.json" },
    { "path": "rest-diagnostics/tsconfig.build.json" },
    { "path": "rest-testing/tsconfig.build.json" },
    { "path": "session-cookie/tsconfig.build.json" },
    { "path": "sqb/tsconfig.build.json" },
    { "path": "testing/tsconfig.build.json" },
    { "path": "trpc/tsconfig.build.json" },
    { "path": "graphql/tsconfig.build.json" },
    { "path": "versions/tsconfig.build.json" },
  ]
}

So, no need in the root any tsconfig.

[KostyaTretyak]

To check for a cyclic dependency, you can clone my repository. Then go back to the state where the cyclic dependency was:

git clone https://github.com/ditsmod/ditsmod.git
cd ditsmod
git checkout 5f2f1ee
# works
npx dpdm --no-warning --no-tree -T --cwd packages/core src
# not works
npx dpdm --no-warning --no-tree -T --group-by-package './packages/*/src/index.ts'

[acrazing]

Got it. references is a flag that dpdm doesn't yet support. I'll try to implement it these days.

[KostyaTretyak]

I created my own package that finds similar cycles:

npx @ts-stack/cycle-detector packages/*/src/index.ts