Is it possible to use ES5 JavaScript with Angular 2 instead of TypeScript?

Question

Is it needed to learn TypeScript for Angular 2?

Can Angular 2 be used with plain JavaScript ?

Edit: I\'ve seen that the languages used as ES6, ES7, Dart comp

Answer 1

Angular 5 dropped support for plain ES5.

See the following commit and comment on GitHub: https://github.com/angular/angular/commit/cac130eff9b9cb608f2308ae40c42c9cd1850c4d