TypeScript 7.0 RC

https://devblogs.microsoft.com/typescript/announcing-typescript-7-0-rc/

82 19 1 month ago

devblogs.microsoft.com

This sounds really great. As a Go developer I'm also really looking forward to their Go port of the filesystem watcher package — I agree that the existing packages don't fully allow to do a reliable recursive directory watch and it would be great to have something where you don't rely on C dependencies just for this thing.

__natty__• 1 month ago

As a Go developer I'm also really looking forward to their Go port of the filesystem watcher package

You plan to contribute to the TypeScript project?

nasretdinov2• 1 month ago

No, in fact I do not use TS at all :).

However they did mention this in the article, and hopefully that also means they'll make the package accessible to others too:

The watcher is a self-contained package that has allowed us to keep a clean separation of concerns between what we care to watch and why.

_august• 1 month ago

TypeScript 7.0 is often about 10 times faster than TypeScript 6.0

amazing

orra• 1 month ago

I need to know whether the speedup holds for truly gigantic projects such as Doom in Typescript types.

giancarlostoro• 1 month ago

This is using their new Go based compiler, so I imagine so.

simonbw• 1 month ago

They've had a preview version of this available as ts-go for a while now, and I've been really happy using it on my projects. I just installed it and changed "tsc" to "tsgo" in a couple places and it just worked. I don't remember exact numbers, but I think an approximately 10x speed up is a reasonable estimate for my build times. They went from noticable-but-not-bad to imperceptibly-fast.

jakubmazanec2• 1 month ago

I'm looking not only for better build times, but for lower memory usage - running few LSPs on a large TypeScript codebases currently takes a lot of RAM.

nhatcher• 1 month ago

I'm looking forward to this. But it does amaze me how Microsoft with all it's power takes years to complete the port to a different language and bun does it in 7 days. Crazy times

atonse• 1 month ago

That made me wonder, since bun natively supports typescript, is it already using some kind of rust implementation of typescript?

0x6c6f6c• 1 month ago

Bun does zero work in relation to TypeScript's type system. Since it's a strict superset, it is "simply" stripping types to execute the resulting JavaScript. That is effectively what it boils down to.

TypeScript is the most complex type system in existence. I am unsurprised it is difficult to port, but I am still a bit surprised by the length of the project thus far.

jakubmazanec2• 1 month ago

Probably because TypeScript is too important to leave it purely to AI. The gall to question Anders Hejlsberg :D

domysee• 1 month ago

Been using tsgo for months and unfortunately had many random crashes, the speedup made it worth it though. Looking forward to try the release candidate.

ChicagoDave• 1 month ago

Sadly, the API isn’t ready yet so tooling has to wait until 7.1.

nish__• 28 days ago

Stuff like this is worth the wait.

aniceperson• 1 month ago

good, thw result will be Websites ten times more bloated.

0xCAP• 1 month ago

How?

TypeScript 7.0 RC

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