Use Babel 7 TS compilation and forked checker?

[karlhorky]

Current Behavior

TypeScript is both compiled and checked by rollup-plugin-typescript2.

Desired Behavior / Suggested Solution / Alternatives

What are your thoughts on adding something to run type-checking code in a separate process, like fork-ts-checker-webpack-plugin?

Looks like this would either require moving away from Rollup or finding a plugin that does this.

Who does this impact? Who is this for?

tsdx users

Additional Information

• create-react-app did some exploration into improving TS performance in this thread, when they were adding fork-ts-checker-webpack-plugin: Speed up TypeScript projects facebook/create-react-app#5903
• Next.js recently added fork-ts-checker-webpack-plugin too Integrate type checking into compilation pipeline vercel/next.js#7278

[karlhorky]

Ah it looks like there is an issue in the rollup-plugin-typescript2 repo that is asking for this feature: ezolenko/rollup-plugin-typescript2#113

So that may be a possible solution, in case that gets implemented.