Duplicate definition of types when multiple entrypoints

[Kegulf]

Duplicate definition of types when multiple entrypoints

[Kegulf]

I see that before the rollupTypes the someCommonCode.d.ts actually exists, which is fascinating 😁
It might be possible to check if the contents of the files is used by several entrypoints, and avoid merging it into the rolled up typefiles?

[qmhc]

Currently this is hard to implement.

The rollup process is powered by @microsoft/api-extractor and it's difficult (probably noway) to change its behavior.

[Kegulf]

I see, I don't have any suggestions on how to fix this without a rewrite, unless ms-api-extractor can be configured to fix it.

[NullVoxPopuli]

I just ran in to a very similar problem with symbols being duplicated between entrypoints.

With multiple entrypoints and rolled up types, I would still expect a common .d.ts file extracted that all entrypoint .d.ts files can import from so that the unique symbol behavior that tsc enforces works correctly between the multiple entrypoints. Today, every usage of a unique symbol in each entrypoint is treated as a totally different unique symbol in the .d.ts output :(