There's some impressive work going on with 3rd party oxc powered coverage instrumentation that can replace Babel based istanbul-lib-instrument 👀
> 8-11x faster than babel-plugin-istanbul, 13-15x faster than swc-plugin-coverage-instrument (Rust/WASM), 25-30x faster than istanbul-lib-instrument.
Istanbul-compatible JavaScript/TypeScript coverage instrumentation using the Oxc AST - fallow-rs/oxc-coverage-instrument