TypeScript and C# are both great languages from Anders Hejlsberg. The Danish know how to design a language, C# developer was Mads Torgersen. Microsoft employs them so they want it used more and people like it.

Fun fact: Anders Hejlsberg also designed Turbo Pascal, Delphi which were huge in their day.

I agree though, JS needs to just run in the browser. All the tooling is really a leaky abstraction or unnecessary guts that get in the way. Rant: Webpack is an abomination to anything simple and clear, many dev hours are lost on it.

I still think if ES4 hadn't been cancelled for ES5 we'd be in a better place. It had amazing typing, event handling and was very clear, essentially looked like TypeScript. Browsers could have easily supported ES3 and ES4, we'd have a more solid browser "just works" setup.