I would say the output of most of the compile-to-js languages are easy or at least non-hard to read. It is usually the minification that causes problems and you

I would say the output of most of the compile-to-js languages are easy or at least non-hard to read. It is usually the minification that causes problems and you don't have to do that in a development environment where you usually attach your debugger. It's usually also hard to debug a running application written in a static and compiled language (unless you have symbol tables and similar).