Error on externs

[Luiz Paulo Ferreira dos Santos Brandão]

I have the following files:

test.js

window.Test = {
  length: function() {}
};

Test.hx

package ;

extern class Test {
  static function length():Void;
}

Main.hx

package ;

class Main {
  static function main():Void {
    Test.length();
  }
}

When I compile Main.hx outputs it:

(function () { "use strict";
var Main = function() { };
Main.main = function() {
 Test.$length();
};
Main.main();
})();

My question is why my function .length is compiled to ".$length" ?

ps: sorry for my english.

[Andy Li]

It sounds like a bug so I've just reported it -> https://github.com/HaxeFoundation/haxe/issues/3229

Reason of why this is happening:

Haxe "class object" is compiled to a Function object in JS. For example the Main class in your example: "var Main = function() { };"

In JS, Function has an instance method "length". To avoid causing conflict, haxe renamed static length method to "$length".

Workaround is to use __js__ magic with inline:

extern class Test {

inline static function length():Int return untyped __js__("Test.length()");

}

Hope it helps.

Best,

Andy

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[Luiz Paulo Ferreira dos Santos Brandão]

Thanks, Andy!