[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.