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Signed-off-by: Simo <simo@6529.io>
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WalkthroughRefactors useWaveIsTyping to use a WebSocket abstraction (useWebSocket/useWebSocketMessage), adds subscription lifecycle, message handlers for typing and drop updates, and periodic cleanup. Removes the legacy useWaveWebSocket hook and its tests; updates tests to a message-driven mock harness for the new hooks. Changes
Sequence Diagram(s)sequenceDiagram
autonumber
actor Component as Component (uses useWaveIsTyping)
participant WS as useWebSocket
participant MSG as useWebSocketMessage
participant State as Typers Map / Typing String
Component->>WS: connect(waveId)
WS-->>Component: onConnect
Component->>WS: send SUBSCRIBE_TO_WAVE(waveId, subscribe=true)
Note over MSG,State: Incoming messages (filtered by waveId)
MSG-->>Component: USER_IS_TYPING{waveId, userId, timestamp}
Component->>State: upsert typer (ignore current user)
Component->>State: updateTypingString()
MSG-->>Component: DROP_UPDATE{waveId, drop:{authorId}}
Component->>State: remove typers by authorId
Component->>State: updateTypingString()
Note over Component,State: Periodic cleanup when not CONNECTED
Component->>State: clear stale typers
Component->>State: updateTypingString()
Component-->>WS: onUnmount -> send SUBSCRIBE_TO_WAVE(waveId, subscribe=false)
Estimated code review effort🎯 4 (Complex) | ⏱️ ~45 minutes Suggested reviewers
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Pre-merge checks and finishing touches❌ Failed checks (1 warning)
✅ Passed checks (2 passed)
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Actionable comments posted: 1
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📒 Files selected for processing (4)
__tests__/hooks/useWaveIsTyping.test.tsx(1 hunks)__tests__/hooks/useWaveWebSocket.test.ts(0 hunks)hooks/useWaveIsTyping.ts(3 hunks)hooks/useWaveWebSocket.ts(0 hunks)
💤 Files with no reviewable changes (2)
- tests/hooks/useWaveWebSocket.test.ts
- hooks/useWaveWebSocket.ts
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📓 Path-based instructions (4)
**/*.{ts,tsx}
📄 CodeRabbit inference engine (.cursorrules)
**/*.{ts,tsx}: Do not include any comments in the code
Use react-query for data fetching
Always add readonly before propsUse TypeScript for implementation code
Files:
__tests__/hooks/useWaveIsTyping.test.tsxhooks/useWaveIsTyping.ts
**/*.tsx
📄 CodeRabbit inference engine (.cursorrules)
**/*.tsx: Use FontAwesome for icons
Use TailwindCSS for stylingUse React functional components with hooks
Files:
__tests__/hooks/useWaveIsTyping.test.tsx
**/{__tests__/**/*.{ts,tsx},*.test.tsx}
📄 CodeRabbit inference engine (AGENTS.md)
**/{__tests__/**/*.{ts,tsx},*.test.tsx}: Place tests in tests directories or alongside components as ComponentName.test.tsx
Mock external dependencies and APIs in tests
Files:
__tests__/hooks/useWaveIsTyping.test.tsx
__tests__/**
📄 CodeRabbit inference engine (tests/AGENTS.md)
Place Jest test suites under the
__tests__directory mirroring source folders (e.g., components, contexts, hooks, utils)
Files:
__tests__/hooks/useWaveIsTyping.test.tsx
🧬 Code graph analysis (2)
__tests__/hooks/useWaveIsTyping.test.tsx (2)
services/websocket/useWebSocketMessage.ts (1)
useWebSocketMessage(17-47)hooks/useWaveIsTyping.ts (1)
useWaveIsTyping(64-173)
hooks/useWaveIsTyping.ts (2)
services/websocket/useWebSocketMessage.ts (1)
useWebSocketMessage(17-47)helpers/Types.tsx (2)
WsTypingMessage(331-338)WsDropUpdateMessage(340-343)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)
- GitHub Check: Analyze (javascript-typescript)
🔇 Additional comments (13)
__tests__/hooks/useWaveIsTyping.test.tsx (5)
1-6: LGTM!The imports are correctly updated to use the new WebSocket abstractions (
useWebSocketanduseWebSocketMessage), replacing the legacyuseWaveWebSockethook.
8-14: LGTM!The mock setup correctly replaces the new WebSocket hooks with Jest mocks, enabling controlled testing of message-driven behavior.
16-27: LGTM!The message-driven test harness (messageHandlers, emitMessage) effectively simulates WebSocket message routing, enabling comprehensive testing of the hook's behavior without requiring a real WebSocket connection.
29-55: LGTM!The test setup and teardown are well-structured:
- Fake timers enable testing of time-based typing timeout behavior
- Mock implementations correctly simulate the WebSocket hooks' behavior
- Proper cleanup prevents test interference
57-109: LGTM! Comprehensive test coverage.The test thoroughly validates the hook's lifecycle and message-driven behavior:
- Subscription on mount
- Typing indicator updates from USER_IS_TYPING messages
- Typer removal on DROP_UPDATE messages
- Timeout-based clearing of stale typers (5-second window)
- Unsubscription on unmount
The use of
act,waitFor, and fake timers ensures reliable testing of asynchronous and time-dependent behavior.hooks/useWaveIsTyping.ts (8)
33-52: LGTM!The
buildTypingStringfunction correctly handles all cases (0, 1, 2, or 3+ typers) and sorts by level to prioritize higher-level users in the display string.
64-82: LGTM! Efficient state management.The hook correctly uses:
useStatefor the typing message (triggers re-renders when the display string changes)useReffor the typers map (mutable state that doesn't trigger re-renders)useCallbackwith stable dependencies forupdateTypingStringThe optimization in line 81 prevents unnecessary re-renders by only updating state when the message actually changes.
84-88: LGTM!The reset effect correctly clears the typers map and updates the display string when the wave changes, ensuring clean state when switching between waves.
90-107: LGTM! Subscription lifecycle is correct.The subscription effect properly:
- Only subscribes when the WebSocket is connected
- Sends a subscription message on mount/reconnect
- Sends an unsubscription message on unmount or wave change
Note: The cleanup function (lines 101-106) will attempt to send an unsubscribe message even if the connection has dropped by the time cleanup runs. This is typically handled gracefully by WebSocket implementations as a no-op, but verify that the
sendfunction handles disconnected state appropriately.
109-128: LGTM!The USER_IS_TYPING handler correctly:
- Filters messages by wave ID
- Excludes the current user's typing events (prevents "you are typing" display)
- Updates the typers map with timestamp for timeout tracking
- Triggers display string update
The callback dependencies are appropriate and stable.
130-145: LGTM!The DROP_UPDATE handler correctly removes typers when they post a drop to the current wave, with a good optimization to only trigger a display update if the author was actually present in the typers map.
147-153: LGTM!The disconnect cleanup effect ensures the typing indicators are cleared when the WebSocket connection drops, preventing stale typing indicators from persisting during connection issues.
156-170: LGTM!The periodic cleanup effect correctly:
- Runs every 1 second to prune stale typers (older than 5 seconds)
- Updates the display string after pruning
- Cleans up the interval on unmount
This ensures typing indicators automatically disappear after the configured timeout period, even without explicit DROP_UPDATE messages.
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⚠️ Outside diff range comments (1)
hooks/useWaveIsTyping.ts (1)
22-38: Fix grammatical error for singular case.Line 37 produces grammatically incorrect text when exactly 3 people are typing ("and 1 more people are typing" should be "and 1 more person are typing").
Apply this diff:
- return `${names[0]}, ${names[1]} and ${names.length - 2} more people are typing`; + const remaining = names.length - 2; + const peopleWord = remaining === 1 ? "person" : "people"; + return `${names[0]}, ${names[1]} and ${remaining} more ${peopleWord} are typing`;
🧹 Nitpick comments (1)
hooks/useWaveIsTyping.ts (1)
14-17: Consider adding readonly modifiers for immutability.While the coding guideline about readonly specifically targets props interfaces, making TypingEntry properties readonly would better reflect their immutable nature and prevent accidental mutations.
Apply this diff:
interface TypingEntry { - profile: ApiProfileMin; - lastTypingAt: number; + readonly profile: ApiProfileMin; + readonly lastTypingAt: number; }
📜 Review details
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Review profile: CHILL
Plan: Pro
📒 Files selected for processing (1)
hooks/useWaveIsTyping.ts(2 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
**/*.{ts,tsx}
📄 CodeRabbit inference engine (.cursorrules)
**/*.{ts,tsx}: Do not include any comments in the code
Use react-query for data fetching
Always add readonly before propsUse TypeScript for implementation code
Files:
hooks/useWaveIsTyping.ts
🧬 Code graph analysis (1)
hooks/useWaveIsTyping.ts (3)
generated/models/ApiProfileMin.ts (1)
ApiProfileMin(16-133)services/websocket/useWebSocketMessage.ts (1)
useWebSocketMessage(17-47)helpers/Types.tsx (2)
WsTypingMessage(331-338)WsDropUpdateMessage(340-343)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)
- GitHub Check: Analyze (javascript-typescript)
🔇 Additional comments (3)
hooks/useWaveIsTyping.ts (3)
50-55: LGTM! Good optimization pattern.The centralized
updateTypingStringcallback with the identity check(prev === newMessage ? prev : newMessage)prevents unnecessary re-renders when the typing string hasn't changed. The empty dependency array is correct since it only references stable values (the ref and setState function).
62-78: LGTM! Proper subscription lifecycle.The effect correctly subscribes to wave updates only when connected and properly unsubscribes during cleanup. This aligns with the broader refactor to use the shared WebSocket abstraction.
80-136: LGTM! Message handlers and cleanup logic are well-structured.The implementation correctly:
- Filters typing events by wave and excludes the current user
- Removes typers from the list when they post (DROP_UPDATE handler)
- Clears stale typers when disconnected and via periodic cleanup
- Uses proper type guards for nullable fields (lines 84-88, 104)
- Manages dependencies correctly across all effects and callbacks
The overall refactor successfully migrates to the new WebSocket abstraction while maintaining correct typing indicator behavior.
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