Hacky haxe plain javascript object with JS for/in key value loop.

HaxeJSObject.hx

package;

typedef Union2<T1,T2> = haxe.extern.EitherType<T1,T2>;

abstract JSObject( Dynamic ) from Dynamic to Dynamic
{
    public inline function new()
    {
        this = {};
    }
    
    @:arrayAccess
    public inline function get( key:Union2<String,Int> ):Dynamic
    {
      return untyped this[key];
    }
    
    @:arrayAccess
    public inline function set( key:Union2<String,Int>, value:Dynamic )
    {
        untyped this[key] = value;
    }
    
    public inline function forIn( body:String->Void )
    {
        untyped __js__( "for( var $k in {0} ) {1}", this, body(untyped $k) );
    }
        
    public inline function delete( key:Union2<String,Int> )
    {
        untyped __js__( "delete {0}[{1}]", this, key );
    }
}

Modified to reflect above method.