Profiling support?

Is there any way to profile Godot ECMAScript code? Either in the editor, or by some other means?

From a quick read of the source I don't think the profiling methods have been implemented, but is there some way to attach a different debugger than the Godot one? Or maybe even by running a build of the engine source and attaching a C++ debugger to that. Has anyone had any success?

Thanks.