API Extractor fails to extract types

[ishon19]

Hello! I was working on a feature to replace chalk with picocolors in jest repo, however the build process just fails since the @microsoft/api-extractor used in the project is not happy about the types.ts file in the exported picocolors npm package, as shown in the screenshot below:

Linking the PR as well for more context: jestjs/jest#15197

But when I manually go to the node_modules/picocolors and change the file name from types.ts to types.d.ts, it just works fine. Just wanted to know, is there any possible workaround? And if this seems to be a potential fix, I'm happy to contribute. Any help/suggestion appreciated! :)

[ishon19]

@alexeyraspopov would appreciate your suggestions on this one, this has been blocking my PR.