ousado

You make it sound like you actually experienced crashes due to an unstable sort function in Haxe.

You even make it sound like that was a common occurrence due to a deliberate decision on part of the development team to not fix that alleged source of crashes, but rather refer to an alternative in the documentation.

You should clarify that you haven't made this experience, and that no one you know or have heard of ever has.

You seem to have no idea how unlikely it is that the various Array.sort implementations (they're usually provided by the respective target platforms, of course) all have some bug that leads to crashes, moreover, you seem to be unaware that most target platforms provide such basic APIs, which in turn shows how little you know about Haxe.

As the documentation already explains, "unstable" in the context of a sort function is about the order of elements that are equal from the perspective of the comparison function. That's basic CS terminology. It's not about crashes, and it's not about bugs in Haxe or the respective target platforms.

You simply misunderstood, but you keep insisting. Which sheds some light on the overall quality of your comments about Haxe here.

When you write Javascript, do you mean TypeScript, AtScript, something else? There's no type checking in JS, and there is no metaprogramming support in JS, let alone of the quality it can be found in Haxe.

Besides that, the type system of Haxe is far more expressive than those of most languages that also compile to JS. Ocaml, Scala and Haskell are the better known languages that are actual competitors in that regard.

Of course you have to learn the language the compiler is implemented in when you're hacking the compiler. That's not an inconvenience, it's a tautology.

When you take development time into account, GWT doesn't come for free. Yes, it's possible to compile Java to JS via GWT, but the toolchain is prohibitively slow. In contrast, the Haxe compiler is extremely fast.

Development hasn't stalled at all, neither for the JS target nor for most other targets. The core compiler is being improved constantly, which benefits all targets, and there have been improvements in the JS code generator, too (which isn't easy, the code quality has been very high, already).