Phases 31-32 caused VU meter and volume slider performance regression:
- VU meters animated slowly
- Volume sliders unresponsive when dragged
Reverted to Phase 30 state. Phases 28-30 optimizations remain stable.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Phase 31 selector optimization and Phase 32 state update changes
caused VU meters to animate slowly and volume sliders to be
unresponsive. Reverted all affected files to pre-Phase-31 state.
Files reverted:
- useMixerHelper.js: back to individual selectors (no shallowEqual)
- mixersSlice.js: removed composed selectors
- JKSessionScreen.js: pre-Phase-32 state
- useSessionModel.js: pre-Phase-32 debounce changes
Performance issues resolved:
- VU meter animations now smooth
- Volume sliders respond immediately
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Create stable masterMixerIds key that only changes on add/remove
- Remove console.log statements causing performance overhead
- Remove expensive mixerArraysEqual string comparisons
- Categorization now only runs when mixers added/removed, not on
volume/pan changes
Fixes sluggish VU meters and slow volume slider response.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Original code didn't include joinSession in useEffect deps.
Function is defined after useEffect and accessed via closure.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Original code didn't include guardOnJoinSession in useEffect deps.
Function is defined after useEffect and accessed via closure.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Replace useCallback(debounce()) with useDebounceCallback for stable timer.
Minimal change - only import and trackChanges handler modified.
Original dependency arrays preserved to avoid initialization order issues.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Revert to minimal [currentSessionIdRef] deps to avoid temporal dead zone
errors. Other functions are stable refs or callbacks defined earlier.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Use ref pattern to access refreshCurrentSession in joinSession callback
to avoid "Cannot access before initialization" temporal dead zone error
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Audited all 14 remaining useState declarations
- Documented decisions for each state variable
- Confirmed videoLoading/resyncLoading removed in Plan 03
- Identified 3 leave modal states as future colocation candidates
- Added temporary render counter for Phase 32 verification
- Counter logs only in development mode
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Replaced inline video button with JKVideoButton component
- Replaced inline resync button with JKResyncButton component
- Removed videoLoading and resyncLoading state from parent
- Removed handleVideoClick and handleResync functions
- Removed unused videoIcon and resyncIcon imports
- Loading state changes no longer trigger parent re-renders
- Extracted resync button from JKSessionScreen
- Local loading state prevents parent re-renders
- memo() wrapper for render optimization
- Preserves original error handling logic
- Replace unconditional dispatches with mixerArraysEqual checks
- Only dispatch when category content actually changes
- Update prevCategoriesRef after each dispatch
- Add console logs for debugging dispatch decisions
- Run prettier to fix formatting
- Replace triple setTimeout pattern (1s, 1.4s, 6s) with single 1.5s debounced call
- Eliminates redundant API calls on session join (STATE-01)
- Uses useMemo to create stable debounced function
- Debounce delay of 1.5s covers mixer initialization window
- Cleanup via cancel() on unmount
- Add useRef to track previous category values
- Prevents circular updates by using ref instead of selectors
- Stores last dispatched values for comparison
- Add mixerArraysEqual helper to compare mixer arrays by ID
- Compares master.id + personal.id to create unique pair key
- Used to prevent unnecessary Redux dispatches when categorizing mixers
- Implements ref-based debounce pattern for stable timers
- Solves stale closure problem with debounced callbacks
- useRef stores latest callback, useMemo creates debounce once
- Cleanup on unmount via useEffect return
- Exports both named and default for flexibility
Phase 32: State Update Optimization
- 4 plan(s) in 2 wave(s)
- 3 parallel in wave 1, 1 sequential in wave 2
- Ready for execution
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Phase 32: State Update Optimization
- Debounce patterns for track sync consolidation documented
- Ref-based closure pattern for stable debounce identified
- State colocation principles for button loading states
- Content comparison before Redux dispatch patterns
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Updated must_haves.truths to clarify that grouping state IS derived data
- Made Task 2 verification precise: exactly 13 useSelector calls expected
- Added verification that old individual selectors (lines 72-92) are removed
- Changed vague 'around 9-12' to exact count verification
- Add memo to React import
- Wrap component with memo(function JKSessionAudioInputs)
- Add displayName for React DevTools
- Prevents unnecessary re-renders when parent re-renders with same props
Phase 30: Component Memoization
- 1 plan in 1 wave
- Wrap JKSessionAudioInputs with React.memo
- Wrap JKSessionRemoteTracks with React.memo
- Ready for execution
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Phase 30: Component Memoization
- React.memo API and patterns for React 16.13.1
- Prop stability requirements documented
- Integration with Phase 29 context memoization
- Common pitfalls: inline props, children, context
- Verification with React DevTools Profiler
- DisplayName for debugging best practices
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Phase 29 verified and complete:
- MixersContext.Provider value memoized with useMemo
- VuContext separated from MixerConfigContext (Phase 28)
- 6 context consumers wrapped with React.memo
- useMixerHelper.getMixer stabilized with useCallback
Requirements satisfied: CTX-01, CTX-02, CTX-03
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Tasks completed: 4/4
- Task 1a: Stabilize useMixerHelper function references
- Task 1b: Memoize MixersContext provider value
- Task 2: Memoize VuContext and GlobalContext provider values
- Task 3: Wrap context consumers with React.memo
SUMMARY: .planning/phases/29-context-optimization/29-01-SUMMARY.md
Accomplishments:
- Memoized all 3 context providers (MixersContext, VuContext, GlobalContext)
- Stabilized getMixer and dependent function references
- Wrapped 6 consumer components with React.memo
- Eliminated cascading re-renders from context value changes
Requirements completed:
- CTX-00: useMixerHelper.getMixer wrapped with useCallback
- CTX-01: MixersContext.Provider value is memoized
- CTX-03: Context consumers only re-render when data changes
Performance impact:
- Volume slider changes no longer re-render VU meters
- VU updates no longer re-render volume sliders
- Context consumers only re-render when their specific data changes
VuContext:
- Wrap combined value object with useMemo
- vuStore is stable module reference (not a dependency)
- Depends on vuHelpers
GlobalContext:
- Wrap provider value with useMemo
- Dependencies: all state and callback values
- useState setters are stable (not dependencies)
Both contexts now only update consumers when actual data changes,
preventing unnecessary re-renders across the component tree.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add useMemo wrapper around mixerHelper value
- Prevents new object creation on every render
- Depends on stable mixerHelper (from Task 1a)
- Context consumers now only re-render when data actually changes
This eliminates cascading re-renders when unrelated state updates occur.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Wrap getMixer with useCallback to ensure stable reference
- Prevents cascade of function recreations on every render
- Dependencies: mixMode (selector value)
- Uses allMixersRef.current (ref, not dependency)
This stabilization is prerequisite for effective context memoization.
All dependent functions (fillTrackVolumeObject, mute, faderChanged, etc.)
now automatically stabilize because their getMixer dependency is stable.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Nuwan