Thanks for all answers.
I’ve started to play with Monkey2 using only iterm & Atom and it works well.
Monkey2 is a more advanced language in term of oop design
Well, I’m not an OOP guy, I’m more into functional programming (even in my day job) so I will write simple modules with pure functions instead of traditional OOP.
Thanks for the information about the HTML output, I’m okay with the Emscriptem version. 