How to access v8's debug API in QJSEngine

[wysota]

Assuming that QJSEngine may become an implemetation detail of QQml and QScriptEngine will stay for application scripting, it may be an interesting option to create a fork of the current v8 based QJSEngine with an exposed debug interface for in app debugging, and those use cases where a lot of JS performance is needed and the slow interface for QObject is not significant.

Nothing can stop you from extracting QJSEngine code, renaming it to QV8Engine and making it a separate library.

But you are probably right that Qt wont maintain 2 scripting engines that basically do almost the same, just with different performance and platform compatibility.

So if there is a need for such a thing it would have to be some extern component maintained by some 3rd party.

I would assume the Trolls will want V4 to be as fast as V8. Since it's JIT, execution speed (of the compiled code at least) should be similar.