[flohofwoe]

For bugs that only manifest when compiled to WASM but not when compiled to x86 or ARM machine code (quite rare, but happens), or bugs in platform-specific code (for instance code which talks to browser APIs).

In typical applications, the vast majority of bugs should happen in the platform-agnostic parts, so debugging a native build totally makes sense. It would still be great if WASM would be as trivially debuggable as native code.

IMHO proper source-level debugging support in the browser dev-tools (or remote-debugging via VSCode) would make a lot more sense than debugging in gdb/lldb though.