I'm building a JavaScript debugger called Wirebrowser. It combines network inspection, request rewriting, heap snapshots, and live object search.
The main experimental feature is BDHS (Breakpoint-Driven Heap Search): it hooks into the JavaScript debugger and automatically captures a heap snapshot at every pause and performs a targeted search for the value or structure of interest. This reveals the moment a value appears in memory and the user-land function responsible for creating it.
Another interesting feature is the Live Object Search: it inspects runtime objects (not just snapshots), supports regex and object similarity, and lets you patch objects directly at runtime.
Whitepaper: https://fcavallarin.github.io/wirebrowser/BDHS-Origin-Trace
Feedback very welcome, especially on whether BDHS would help your debugging workflow.
I am working on doing something similar in C++, where there is an additional obstacle of recreating the objects from a memory snapshot without runtime support.
Doing similar work in C++ is on a totally different level: raw memory, no type info, pointer chasing, layout inference... Very curious to hear how you’re approaching it.