If that's the case I'd have to take their word for it.. it's their code so they know the pitfalls. It still surprises me though: if I was developing a feature like that it would be the first thing I'd want to get working so I could try all of my test cases on interpeter-only mode.

Maybe there are some types of code that the interpreter just can't handle and always fall back into the JIT?

> The ecosystem has not settled on V8

Sorry, I probably didn't express myself wall. I personally am excited about the development of other js engines, and I also home that continues.

For non-browser js, though, node is the 800lb gorilla. I'm hoping that the (apparently reborn?) Spidermonkey or node-chakracore really take off to the point they're first-class options for using with node. However, I am not sure if that will ever happen.

I personally think duktape gets a lot of things right with its lua-inspired API and easy portability. However, it will probably never have a JIT available.