From my experience GraalJS is much better then Rhino.
https://github.com/graalvm/graaljs
Any idea if you want to add it as an option or even replace Rhino down the line?
HtmlUnit / htmlunit
HtmlUnit is a "GUI-Less browser for Java programs".
871
How does funding with Polar work?
1
Pay now to fund the work behind this issue.
2
Get updates on progress being made.
3
Maintainer is rewarded once the issue is completed.
FAQ
Backer
You're funding impactful open source efforts
Contributor
You want to contribute to this effort
Maintainer
You want to get funding like this too