Navigating Strategies for Debugging WASM
summary
WASM lacks a standardized debugger so strategies vary: use LLDB/GDB with wasmtime or wasmer with DWARF for low-level step-through; enable Chromium DevTools with DWARF/Source Maps to set breakpoints and inspect scopes; run AOT builds and debug generated ASM or use print-line/unit tests for quick checks. Uploading to ModSurfer and using modsurfer validate shows 9.9MB vs allowed 2.5MB enforces import/export and size checks in CI. For runtime visibility, Observe SDK instruments functions and memory allocations to emit traces/telemetry and produce actionable stack traces.
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chapters (14)
- 0:00Debugging WebAssembly intro
- 1:48WASM debugging standards
- 3:13Runtime debugging approaches
- 6:26Debugging strategies for WASM
- 7:48Debugging tools and limits
- 9:36Browser DevTools and DWARF
- 12:04Print line debugging and tests
- 13:30Monitoring WASM modules
- 15:17ModSurfer for WASM inspection
- 19:10ModSurfer in CI/CD validation
- 20:55Observe SDK for WASM observability
- 23:44Emerging WASM tools and integrations
- 24:47Debugging strategies summary
- 25:07Q&A
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