There are certainly other javascript implementations. For example, here's one I stumbled upon recently that's written in plain Go: https://github.com/dop251/goj

There are certainly other javascript implementations. For example, here's one I stumbled upon recently that's written in plain Go: https://github.com/dop251/goja https://github.com/dop251/goja Of course, it won't help you since it's not built into a web browser.