declarationMap support

[kacpak]

Hi, I haven't found information about it and I cannot test it out to verify myself this week, but I'm wondering if this plugin supports TypeScript's declaration map support?
If no - would you consider adding it in?

[Swatinem]

So rollup on its own has excellent sourceMap support. But we do some pre- and post-processing of whatever rollup does, apart from the synthetic AST that I generate. And I really don’t want to manually maintain a sourceMap for all that.

I suspect doing that is a huge amount of work, and I certainly don’t want to do that on my own :-D

[segevfiner]

@Swatinem Does https://www.npmjs.com/package/magic-string help?

[Swatinem]

Yes, magic-string would help here, and I converted the preprocessor code to it some time ago. There is also postprocessor code that fixes up some namespace declarations which would also need to be adapted to magic-string. I never got around to that.

PRs welcome though.

[aleclarson]

Should keep this open in case someone wants to tackle it. But tag it with ”help wanted”.

[NWYLZW]

Hi, I haven't found information about it and I cannot test it out to verify myself this week, but I'm wondering if this plugin supports TypeScript's declaration map support? If no - would you consider adding it in?

Now I have initially solved this problem, but it has not been merged with the upstream. Perhaps you can try @jiek/rollup-plugin-dts and provide relevant feedback. I hope it can help you.