> When a language team abandons self-hosting (TS in TS) for raw performance (Go), it signals we've hit fundamental limits in JS/TS for systems programming.

I hope you really mean for "userspace tools / programs" which is what these dev-tools are, and not in the area of device drivers, since that is where "systems programming" is more relevant.

I don't know why one would choose JS or TS for "systems programming", but I'm assuming you're talking about user-space programs.

But really, those who know the difference between a compiled language and a VM-based language know the obvious fundamental performance limitations of developer tools written in VM-based languages like JS or TS and would avoid them as they are not designed for this use case.