Re:Ask HN: Are there any downsides of using TypeScript?
by andreygrehov on Monday July 16, 2018 @04:41PM
(#17544890)
Awesome. I think you even answered the question I asked above. Thank you. Convinced and going to go with TS.
Speed/development heaviness is not an issue because you can skip typing whenever you want and just write ES6+.
Non-TS libraries are easy to import and use. I use one or two, but most libs have type defs available.
Testing is the same as in JS. There are type defs available for the major JS testing suites.