GWT/Angular/React Switch or not ?

If you're using Angular, are you even using JS? I thought I had understood you'd be learning another transpiled language - TypeScript - and while that adds some less-weak typing, I'm not sure it gets near the assurances of Java.

Yah, really if i want to have Type safety, then why i need a new language why not to use Java instead?! especially when there is GWT an excellent transpiler, and for elemental even it is still in beta it works great, i already try to use it when ever possible, and when something is missing in the beta version JsInterop complement it and the changes normally and not huge and easy to maintain.