YES!!! for nodejs, inpector API is used. But if you're adding dynamic logs or metrics, we dont even call the inspector completely. we return an expression that will always evaluate to false and safely evaluate our the log/metric. saves time and computations happen in the same cpu cycle

You're correct inpector API is not available in many non-v8 targets. Bun also has somewhat of a partial support for inpector API but at least has a programmable debugger interface. It's not going to be as fast as native inspector but its better than nothing i guess :P

for python sys.monitoring. for JVM, we do bytecode manipulation itself.

bundlers are not an issue because we support sourcemaps. We just need mappings, not code in the sourcemaps and we do sourcemap resolutions out of process so that your app doesnt spend ~200 MB of memory for parsing sourcemaps