[Question] Duktape coroutine and builtins

[zheng-yu-yang]

Hi there,

Recently I had an issue that Duktape.thread.yeild did not work by throwing the exception TypeError: invalid state. After some investigation it turned out that an Array.forEach (a native method) in the coroutine's stack prevented the yielding. By replacing the native forEach with a JS version yielding worked again.

With some analysis, all built-ins which take JS callbacks are not safe.

My question is, when I want to use Duktape coroutine and allow all ES5 facilitates, do I have to replace all such built-ins with JS implementation? Is there a list of them?

Thanks.