On our recent community roadmap 2022 survey, JS/TS was the most requested language to add next. It's definitely a priority. But to make that a reality we'll need help from community members like you: people who know the ecosystem better, and have a driving use case to build a spec around. I'm thrilled that you're interested in getting involved. (For others who interested too, check out
https://pantsbuild.slack.com/archives/C046T6T9U/p1649848376512309)