diff --git a/.planning/ROADMAP.md b/.planning/ROADMAP.md index 58f09faab..fb621c4d1 100644 --- a/.planning/ROADMAP.md +++ b/.planning/ROADMAP.md @@ -63,10 +63,10 @@ Plans: 2. JKSessionRemoteTracks wrapped with React.memo 3. Track components only re-render when their specific track data changes 4. React DevTools shows stable render counts for memoized components -**Plans**: TBD +**Plans**: 1 plan Plans: -- [ ] 30-01: TBD +- [ ] 30-01-PLAN.md — Wrap JKSessionAudioInputs and JKSessionRemoteTracks with React.memo ### Phase 31: Selector Optimization **Goal**: Redux selectors compute efficiently with memoization @@ -105,7 +105,7 @@ Plans: |-------|-----------|----------------|--------|-----------| | 28. VU Meter Optimization | v1.7 | 2/2 | ✓ Complete | 2026-03-05 | | 29. Context Optimization | v1.7 | 1/1 | ✓ Complete | 2026-03-05 | -| 30. Component Memoization | v1.7 | 0/TBD | Not started | - | +| 30. Component Memoization | v1.7 | 0/1 | Planned | - | | 31. Selector Optimization | v1.7 | 0/TBD | Not started | - | | 32. State Update Optimization | v1.7 | 0/TBD | Not started | - | diff --git a/.planning/phases/30-component-memoization/30-01-PLAN.md b/.planning/phases/30-component-memoization/30-01-PLAN.md new file mode 100644 index 000000000..e5f7f0de6 --- /dev/null +++ b/.planning/phases/30-component-memoization/30-01-PLAN.md @@ -0,0 +1,200 @@ +--- +phase: 30-component-memoization +plan: 01 +type: execute +wave: 1 +depends_on: [] +files_modified: + - jam-ui/src/components/client/JKSessionAudioInputs.js + - jam-ui/src/components/client/JKSessionRemoteTracks.js +autonomous: true + +must_haves: + truths: + - "JKSessionAudioInputs does not re-render when parent re-renders with same props" + - "JKSessionRemoteTracks does not re-render when parent re-renders with same props" + - "Track components only re-render when their specific track data changes" + - "React DevTools shows components as 'Memo' with displayName" + artifacts: + - path: "jam-ui/src/components/client/JKSessionAudioInputs.js" + provides: "Memoized audio inputs container" + contains: "memo(function JKSessionAudioInputs" + - path: "jam-ui/src/components/client/JKSessionRemoteTracks.js" + provides: "Memoized remote tracks container" + contains: "memo(function JKSessionRemoteTracks" + key_links: + - from: "jam-ui/src/components/client/JKSessionScreen.js" + to: "JKSessionAudioInputs" + via: "stable props from memoized context" + pattern: " +Wrap JKSessionAudioInputs and JKSessionRemoteTracks with React.memo to prevent unnecessary re-renders when parent components re-render with unchanged props. + +Purpose: Complete the component memoization chain started in Phase 29. These container components sit between JKSessionScreen (parent) and the already-memoized child components (JKSessionMyTrack, SessionTrackVU, SessionTrackGain). Without memoization, parent re-renders cascade through these containers even when props haven't changed. + +Output: Two memoized container components that skip re-renders when props are shallowly equal. + + + +@/Users/nuwan/.claude/get-shit-done/workflows/execute-plan.md +@/Users/nuwan/.claude/get-shit-done/templates/summary.md + + + +@.planning/PROJECT.md +@.planning/ROADMAP.md +@.planning/STATE.md +@.planning/phases/30-component-memoization/30-RESEARCH.md +@.planning/phases/29-context-optimization/29-01-SUMMARY.md + + + + + + Task 1: Wrap JKSessionAudioInputs with React.memo + jam-ui/src/components/client/JKSessionAudioInputs.js + +Wrap JKSessionAudioInputs with React.memo following the Phase 29 pattern: + +1. Add `memo` to the React import: + ```javascript + import React, { memo } from 'react'; + ``` + +2. Wrap the component definition with memo using named function expression: + ```javascript + const JKSessionAudioInputs = memo(function JKSessionAudioInputs({ + myTracks, + chat, + mixerHelper, + isRemote = false, + mixType = 'default' + }) { + // existing implementation unchanged + }); + ``` + +3. Add displayName after the component definition (before export): + ```javascript + JKSessionAudioInputs.displayName = 'JKSessionAudioInputs'; + ``` + +4. Keep the existing `export default JKSessionAudioInputs;` unchanged. + +Note: Props are already stable from Phase 29 context memoization. Default shallow comparison is sufficient - do NOT add custom comparison function. + + +Run syntax check: +```bash +cd jam-ui && node -c src/components/client/JKSessionAudioInputs.js +``` +Verify memo wrapper present: +```bash +grep -n "memo(function JKSessionAudioInputs" jam-ui/src/components/client/JKSessionAudioInputs.js +``` +Verify displayName present: +```bash +grep -n "displayName = 'JKSessionAudioInputs'" jam-ui/src/components/client/JKSessionAudioInputs.js +``` + + +JKSessionAudioInputs.js contains: +- `import React, { memo } from 'react'` +- `memo(function JKSessionAudioInputs` wrapper +- `displayName = 'JKSessionAudioInputs'` +- Syntax check passes + + + + + Task 2: Wrap JKSessionRemoteTracks with React.memo + jam-ui/src/components/client/JKSessionRemoteTracks.js + +Wrap JKSessionRemoteTracks with React.memo following the same pattern: + +1. Update the React import to add `memo`: + ```javascript + import React, { useMemo, memo } from 'react'; + ``` + +2. Wrap the component definition with memo using named function expression: + ```javascript + const JKSessionRemoteTracks = memo(function JKSessionRemoteTracks({ + mixerHelper, + sessionModel + }) { + // existing implementation unchanged (includes useMemo for remoteParticipantsData) + }); + ``` + +3. Add displayName after the component definition (before export): + ```javascript + JKSessionRemoteTracks.displayName = 'JKSessionRemoteTracks'; + ``` + +4. Keep the existing `export default JKSessionRemoteTracks;` unchanged. + +Note: This component already uses useMemo internally for remoteParticipantsData. The memo wrapper prevents re-renders when mixerHelper and sessionModel props haven't changed. + + +Run syntax check: +```bash +cd jam-ui && node -c src/components/client/JKSessionRemoteTracks.js +``` +Verify memo wrapper present: +```bash +grep -n "memo(function JKSessionRemoteTracks" jam-ui/src/components/client/JKSessionRemoteTracks.js +``` +Verify displayName present: +```bash +grep -n "displayName = 'JKSessionRemoteTracks'" jam-ui/src/components/client/JKSessionRemoteTracks.js +``` + + +JKSessionRemoteTracks.js contains: +- `import React, { useMemo, memo } from 'react'` +- `memo(function JKSessionRemoteTracks` wrapper +- `displayName = 'JKSessionRemoteTracks'` +- Syntax check passes + + + + + + +After both tasks complete: + +1. **Syntax verification** (automated): + ```bash + cd jam-ui && node -c src/components/client/JKSessionAudioInputs.js && node -c src/components/client/JKSessionRemoteTracks.js + ``` + +2. **Pattern verification** (automated): + ```bash + grep -l "memo(function" jam-ui/src/components/client/JKSession{AudioInputs,RemoteTracks}.js | wc -l + # Expected: 2 + ``` + +3. **Manual verification** (optional - user can verify with React DevTools): + - Open session screen in browser + - Open React DevTools Profiler tab + - Record while triggering parent re-render (e.g., toggle a setting) + - Check JKSessionAudioInputs and JKSessionRemoteTracks show "Did not render" when props unchanged + + + +- Both components wrapped with React.memo using named function expression pattern +- Both components have displayName set for React DevTools visibility +- Syntax checks pass for both files +- Components will skip re-renders when props are shallowly equal (verifiable with DevTools) + + + +After completion, create `.planning/phases/30-component-memoization/30-01-SUMMARY.md` +