Our current sourcemap parsing engine, source-map-js, is a fork of the original Mozilla module, but with several optimizations and without WASM.

This is not ideal because:

• Source map processing makes up for more than 2/3 of our bundle size
• source-map-js also bundles a generator that we don't need
• it uses new Function() internally, which is potentially dangerous

Ideally, we should be able to internally parse sourcemaps, and remove this single dependency that Sandworm currently has.