[mohsen1]

Where I worked full TypeScript compilation in the monorepo would take an hour or more. But that would be kinda rare. Using project references and heavy CI caching and remote caching we were able to type-check parts of the repo with confidence, so IDEs were performant in multi-million-line TypeScript repo.

This is a very likely customer of what you're offering but I doubt it would be an easy sell. Specially that there is always risk of drifting from mainline tsc when using 3rd party compilers

You'd not be the first one to try build a faster tsc. Did you do a deep dive of why they all hit a wall with TypeScript complexity?

[molszanski]

I would pipe a faster checker as a first fail fast local and CI. I want a CI to fail fast but in the end I want it to be correct before production release

[mohsen1]

tsc caches the interface of projects so when a project is not changed, its not compiled.

see https://www.typescriptlang.org/docs/handbook/project-referen...

[molszanski]

Yup yup, I know, but requires a lot of setup on CI. We are using project references btw. They are very cool