[0x000000E2]

Eh, my take, Typescript won. Does the same thing as Babel but supports static types and inference in regular JS.

[chadlavi]

The only thing Babel seems to have a moat around is being react's preferred jsx transpiler

[swyx]

on the contrary - tsc is so slow that most people use babel to strip out types in production.

[simlevesque]

What does "strip out types in production" means ? I've never heard of that.

For what I do, Babel is the slow part. switching babel to esbuild (still with tsc) divided my build times by 10.

[manigandham]

The types aren't real anyway, what is there to strip out? Do you mean don't type check for production builds?

[0x000000E2]

Everything is transpired to JS before it hits prod.

But yeah it's slow

[andrew_]

bingo. tsc for dev. sucrase for prod.

[WesolyKubeczek]

Can it produce JavaScript runnable on Safari from iOS 9.3.6?

Those old iPads and iPhones just won't die... As well as a number of Macbooks that will never go past OS X 10.11.

[0x000000E2]

Yes, it goes back to ES3.

Babel does have a neat automatic polyfill system typescript doesn't. But both can target real old JS versions. Most JS packages you'll find on NPM are still ES5.

Transpilers are quickly making JS a compiled language where the bytecode format is ES5 :)

[filleduchaos]

tsc produces ES3, yes.