I’m imagining a really, really, really rough ride for this. I don’t mean the compiler, tsc CLI, or VS support. I know the TypeScript team will have already competently done their side of the story.

I think that as usual, it’s going to be the hellscape ecosystem of Node that is going to be a complete pain here for devs just wanting to use TypeScript.

Somehow, the vast myriad of tools and their dependencies, find a way to make writing TS/JS worse while trying to make it better.

You’d expect a simple package change to be straightforward, but after ten years of dealing with web tooling ranging from before the webpack era to now, I am constantly amazed by the new ways these tools manage to fuck everything up.

I imagine for Deno the change to the new compiler will be seamless and not even noticeable.

Good to see there is already a preview version (@typescript/native-preview). Can tsc/ts-node use it now?

It is the compiler, not TS, please change the title. People are already parroting it so damage being done.

A previous discussion in March 2025 referencing a shorter video : https://news.ycombinator.com/item?id=43332830