Support profiling compiled blocks - #350
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August 9, 2026 22:38
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Summary
Why
The debugger timing profiler hooks into interpreted thread stepping, but compiled scripts bypass that path. As a result, line-by-line profiling and heatmaps cannot collect timings for compiled blocks.
This adds an opt-in runtime hook for the debugger so compiled execution can report the same block boundaries without affecting normal compiled projects.
Impact
This enables compiler-compatible line-by-line timings and heatmaps for the debugger work in TurboWarp/scratch-gui#1184. Projects that are not being profiled keep the existing generated code path.
Validation
npm run lintnpx tap --no-coverage --timeout=120 test/integration/execute.jsRelated GUI PR: TurboWarp/scratch-gui#1184