For another JavaScript parser, but written in TypeScript, check out Seafox [2]. It's also self-hosted [3], which I always enjoy seeing.
[1] https://boa-dev.github.io/boa/dev/bench/
"QuickJS is a small and embeddable Javascript engine. It supports the ES2020 specification including modules, asynchronous generators, proxies and BigInt."
I understand that it's important to eat your own dog food, in order to experience the pain points yourself. But sometimes people think of self hosting as a symbol of something (pride maybe), and that's the wrong way to approach a programming problem in my opinion.
But if you want to keep the code simpler, a higher-level language could potentially give better performance, simply because it's easier to share data structures, avoid copying, etc. Additionally, things like immutable persistent maps are a great fit for environments in a compiler, and they are much easier to implement in a language with garbage collection.
That said, obviously some high-level languages are still going to be too slow without also putting in a lot of work. I think there's a sweet spot with languages that compile to reasonably fast machine code but are also garbage collected. Languages like OCaml, Go, Haskell. Though I personally wouldn't use Go, but that's for reasons other than performance.