Add visual feedback of executed JavaScript code

[Thibaut-Gudin]

When a gen_js_api function is called there is currently no way to know which is the Javascript code executed when the function is used.
This renders the definition of the correct function signatures pretty difficult, especially when working on function that don't give immediate feed-back.
Would it be possible to print the JavaScript code executed instead of (or on top of) executing it?

[mlasson]

Hello !

I guess we could instrument the generated code; but there is currently no plan to add this feature unless their is a strong demand for it.