"QuickJS is a small and embeddable Javascript engine. It supports the ES2023 specification including modules, asynchronous generators, proxies and BigInt."
https://bellard.org/quickjs/
via @kr1sp1n

I had never heard about QuickJS before but it sure sounds cool. I remember years ago I was semi-interested in Rhino, but then I discovered it was written in Java and then I was far less interested.
https://github.com/mozilla/rhino