@dscho The typescript compiler has been rewritten in Go. PR #2286 adds ts v7 support for typia but doesn't force an additional package it needs (ttsc). The jest related stuff (ts-*) is broken and it is not clear what the plans are for some of the projects. Just starting researching so may have missed some things.

Aside: there appears to be a move to (re)write js tooling in high level languages. Performance seems to be a big deal.

@webstech thanks for taking care of this, sounds like a ton of work!

@webstech thanks for taking care of this, sounds like a ton of work!

We will see if I can take care of this 😕. Using the typescript team's (MS) suggestion of installing two versions, linting works (ie typescript-eslint works).

jest is another matter. It was semi-abandoned for awhile so I have lost some confidence in it. Not sure node:test can replace it though. Do you have any opinions about vitest? I had one test working but there is some typia config to work out. If you are interested in exploring vitest, I will work on it some more.

As an aside, the compiler is faster.

Do you have any opinions about vitest?

@webstech yes, I do ;-) Somebody tried to sneak it into the setup-git-for-windows-sdk Action while upgrading to NodeJS 24. Naturally, I was quite opposed at first. But they had a good point: ESM are first-class citizens in vitest, while they are ridiculously uncared-for by Jest. So I gave in, and when I'm looking back to Jest it's actually without any nostalgia or longing. In many ways, vitest feels like "Jest Done Right", testament to which is the vastly lower update frequency.

tl;dr I like the idea of moving to vitest.

I like the idea of moving to vitest.

You might like it even more now that the tests have been run with it. GGG has never built the tests but that seems to be needed now. It may be normal since I didn't find projects talking about having to do it.

Looking at the vitest config a bit more before submitting a PR. Maybe some parallelism that can be added to improve performance. The current elapsed time is about the same as jest.