I RARELY/NEVER have to build an app so fast that i just fart out whatever broken code as fast as my fingers can type. IF i get a project like this with a deadline of "yesterday" i politely just refuse. I will be wasting my personal time, and the clients time. And the result will be a broken mess that will eventually take more time to fix, than it would have if i in fact did it "correct" from the get go.

That said Haxe has externs, enabling you to target JS/PHP and use the rich ecosystem both langauges have. The best part of externs is that IF i only use 4 things from given package, i statically KNOW i only use these 4 things, and can refactor more easily, or even build the thing i need myself.

It is. And only getting better SLOWLY by each iteration. The thing i love about Haxe that once you use it, your installed version is not legacy in a month (unlike npm/typescipt ecosystem). Haxe is fully working, and does not need a lot of "new" features.

More news about Haxe can be found here: https://haxe.io/ (the old blog is not updated AFAIK)