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* refactor websockets to remove react-tracked
react 19 removed useReducer eager bailout, which broke react-tracked.
react-tracked works by wrapping state in a JavaScript Proxy. When a component reads state.someField, the proxy records that access. On the next state update, it compares only the fields each component actually touched and skips re-renders if those fields are unchanged. Under the hood, this relies on useReducer — and in React 18, useReducer had an "eager bail-out" that short-circuited rendering when the new state was === to the old state. React 19 removed that optimization, so every dispatch now schedules a render regardless, and the proxy comparison runs too late to prevent it.
useSyncExternalStore is a React primitive (added in 18, stable in 19) designed for exactly this pattern: subscribing to an external store:
useSyncExternalStore(
subscribe, // (listener) => unsubscribe — called when the store changes
getSnapshot // () => value — returns the current value for this subscriber
)
React calls getSnapshot during render and compares the result with Object.is. If the value is the same reference, the component bails out — no re-render. The key difference from react-tracked is that this bail-out is built into React's reconciler, not bolted on via proxy tricks and useReducer.
The per-topic subscription model makes this efficient. Instead of one global store where every subscriber has to check if their fields changed, each useWs("some/topic", ...) call subscribes only to that topic's listener set. When a message arrives for front_door/detect/state, only components subscribed to that exact topic get their listener fired → React calls their getSnapshot → Object.is compares the value → bail-out if unchanged. Components watching back_yard/detect/state are never even notified.
* remove react-tracked and react-use-websocket
* refactor usePolygonStates to use ws topic subscription
* fix TimeAgo refresh interval always returning 1s due to unit mismatch (seconds vs milliseconds)
older events now correctly refresh every minute/hour instead of every second
* simplify
* clean up
* don't resend onconnect
* clean up
* remove patch
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| .. | ||
| resize-observer.ts | ||
| use-allowed-cameras.ts | ||
| use-api-filter.ts | ||
| use-camera-activity.ts | ||
| use-camera-friendly-name.ts | ||
| use-camera-live-mode.ts | ||
| use-camera-previews.ts | ||
| use-config-override.ts | ||
| use-config-schema.ts | ||
| use-contextmenu.ts | ||
| use-date-locale.ts | ||
| use-date-utils.ts | ||
| use-deep-memo.ts | ||
| use-deferred-stream-metadata.ts | ||
| use-doc-domain.ts | ||
| use-draggable-element.ts | ||
| use-event-segment-utils.ts | ||
| use-fullscreen.ts | ||
| use-global-mutate.ts | ||
| use-history-back.ts | ||
| use-image-loaded.ts | ||
| use-is-admin.ts | ||
| use-is-custom-role.ts | ||
| use-keyboard-listener.tsx | ||
| use-motion-segment-utils.ts | ||
| use-mouse-listener.ts | ||
| use-navigation.ts | ||
| use-optimistic-state.ts | ||
| use-overlay-state.tsx | ||
| use-persistence.ts | ||
| use-polygon-states.ts | ||
| use-press.ts | ||
| use-session-persistence.ts | ||
| use-stats.ts | ||
| use-suggestions.ts | ||
| use-tap-utils.ts | ||
| use-timeline-utils.ts | ||
| use-timeline-zoom.ts | ||
| use-user-interaction.ts | ||
| use-user-persistence.ts | ||
| use-video-dimensions.ts | ||
| use-ws-message-buffer.ts | ||
| use-zone-friendly-name.ts | ||