1.3 KiB
bf-5r8a Retrospective
Created src/memoryProfiler.ts implementing real-time memory profiling and leak detection.
What worked
Analyzing server.ts and heapDiff.ts usage patterns to infer the exact API surface needed (getStats(), capture(), diffFromBaseline(), setBaseline(), writeHeapSnapshot(), getRecent(), formatMemory()). Reading cli.ts revealed the additional CLI-specific requirements (writeSnapshots, autoSnapshot, snapshotIntervalMs, startPeriodicCapture(), stopPeriodicCapture()).
What didn't
Initially missed the CLI-specific configuration properties and periodic capture methods that cli.ts expects — discovered via TypeScript compilation errors.
Surprise
The module was planned in bd-ch6.7 but the source file was never created, yet server.ts already had full import and usage code. This suggests incomplete feature rollout or partial implementation.
Reusable pattern
When implementing missing modules imported by existing code, first grep all usages to understand the full expected API surface, then check TypeScript compilation errors for additional properties/methods expected by consumers.
Addendum (2026-05-02)
Bead was re-triggered but work was already complete. The file exists at src/memoryProfiler.ts, all 90 tests pass, and the implementation was already committed in f824c2e. No new work required.