Project references indirect dependencies: Error 2742 Inferred type of xxx ...

[johnpyp]

Potentially related: https://github.com/microsoft/typescript-go/issues/1034

Steps to reproduce

https://github.com/johnpyp/tsgo-monorepo-reference-issue

Setup

• package-c: exports MyType interface
• package-b: project reference to package-c, exports createThing() returning MyType
• package-a: project reference to package-b only (not package-c), uses createThing() without type annotation

The issue is that package-a reaches package-c types transitively through package-b, but doesn't have a direct project reference to package-c.

Behavior with [email protected]

No error

Behavior with tsgo

packages/package-a/src/index.ts(4,10): error TS2742: The inferred type of 'thing' cannot be named without a reference to '../../package-b/node_modules/package-c/out'. This is likely not portable. A type annotation is necessary.

[safareli]

have same issue with pnpm

[dimitraz]

Likewise

[sanny-io]

@dimitraz @samdcoding please use the thumbs up instead. It is more considerate of subscribers watching issues.

[jordan-cutler]

I had to disable project references with composite: false to fix it.

Some related research from typescript/pnpm repos I did:

• https://github.com/microsoft/TypeScript/issues/42873#issuecomment-2065572017
• https://github.com/microsoft/TypeScript/issues/47663#issuecomment-1519138189
• https://github.com/microsoft/TypeScript/pull/58176#issuecomment-2052698294
• https://github.com/pnpm/pnpm/issues/7453

I presume it's solely an issue with ts-go, not the original typescript repo?