Output compilerOption Diagnostics

[samcooke98]

Rollup Plugin Name: Typescript

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:

Description

Typescript Rollup didn't output compiler options diagnostics. The most obvious case where this fails is when the supplied tsconfig leaves composite: true. (as declaration is ignored by rollup plugin)

Previously, the plugin would fail silently, and print no detail about why it failed.

./src/index.ts → ./dist/index.js...
[!] (typescript plugin) Error: Couldn't compile 
src/index.ts
Error: Couldn't compile src/index.ts
    at Object.transform (/node_modules/@rollup/plugin-typescript/dist/index.js:466:23)
    at /node_modules/rollup/dist/rollup.js:16611:25

By adding the services.getCompilerOptionsDiagnostics() call the plugin will emit reasons for the failure.

[NotWoods]

Should we override this flag too?

[NotWoods]

I think we should add composite to our list of overridden compiler options if it causes an error.

[samcooke98]

I agree - I think this is best done in a separate PR however(although if you want it done in this one too, I'm happy to do it)

It seems ideal to output compilerOptions errors, regardless of the overridden compiler options - Future typescript versions may introduce new compilerOption errors.

(And thinking about it, when I do this in a separate PR, it'll break this test)

[NotWoods]

Thanks for fixing this!

[shellscape]

@samcooke98 apologies that this one sat so long. Any chance you'd be willing to address the conflicts and failing CI?

[samcooke98]

@samcooke98 apologies that this one sat so long. Any chance you'd be willing to address the conflicts and failing CI?

No worries, it's my bad too, it slipped off my radar. I'll try to get to it this weekend (ie within the next 3 days)

[shellscape]

@samcooke98 we had some CI shenanigans going that were fixed up today. Please do a merge from master and push and it should start passing.

[samcooke98]

Just tested this with@rollup/[email protected] and couldn't reproduce - seems fixed?

Will close now (Sorry I forgot about this PR)