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What do you mean ugly? This basically is making Typescript official.

They just can't have browsers doing the actual type checking because there isn't a specification for how to do that, and writing one would be extremely complicated, and I'm not sure what the point would be anyway.

I misread the proposal, tho it it was for JSDoc.

There is no language spec for TS. No alternative implementations. All we have is checker.ts. It's ugly and slow.

I did only briefly look at the proposal. What did you find so ugly?

I misread the proposal. Thought it was for JSDoc.

Misread no, you didn't read.

Yeah. I saw JSDoc and closed it, lol.

Specifically, you saw the section titled "Limits of JSDoc Type Annotations"?

Specifically, I saw JSDoc syntax and it triggered me so much that I closed the page and threw my phone away in disgust at absurdness of even the idea that someone thought having something like this unironically is a remotely good idea.

I support this behavior as the only correct reaction.