fix(webview): preserve prompt history draft while streaming - #1661
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🪛 GitHub Check: mutation-diffwebview-ui/src/components/chat/hooks/usePromptHistory.ts[warning] 41-41: Mutation test advisory [warning] 84-84: Mutation test advisory [warning] 82-82: Mutation test advisory [warning] 79-79: Mutation test advisory 🔇 Additional comments (2)
📝 SummarySummary by CodeRabbit
WalkthroughThe prompt history hook now tracks history source changes and skips state updates when filtered history is unchanged. Tests verify navigation reset when switching sources and current-input restoration after assistant output causes a rerender. ChangesPrompt history preservation
Priority: ➖ Normal Estimated code review effort: 2 (Simple) | ~10 minutes Change: Bug fix · Severity of issue fixed: Medium Merge Risk: ⚪ Minimal · up to The updated history synchronization and regression coverage address draft restoration during streaming without an identified remaining merge risk. 🚥 Pre-merge checks | ✅ 7 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (7 passed)
Full details: Regression EvidenceExplanation The PR changes prompt-history synchronization to reset navigation when the filtered prompt contents change, while avoiding resets for assistant-only streaming updates. The streaming regression test covers unchanged prompt contents, and the hook test covers a source change with identical contents. However, no focused test covers a prompt-content change while the history source remains the same. The existing task-to-conversation test changes both source and contents, so it cannot detect a failure in the content-change condition independently. Resolution Add a focused hook test at
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Inline comments:
In `@webview-ui/src/components/chat/hooks/usePromptHistory.ts`:
- Line 78: Update the history-change effect in usePromptHistory so navigation
state resets when the selected history source changes as well as when the prompt
list changes; do not let the historyChanged early return skip a
task-to-conversation transition with identical prompts. Add a regression test
covering identical prompts across that transition and verify historyIndex and
tempInput are reset.
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webview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsxwebview-ui/src/components/chat/hooks/usePromptHistory.ts
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Require regression coverage at the lowest valid harness with behavior-focused assertions, including relevant negative, error, false/unset, and boundary cases.
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webview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsx
Check strict typing and exhaustive behavior across normal, boundary, error, cancellation, retry, and compatibility paths.
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webview-ui/src/components/chat/hooks/usePromptHistory.tswebview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsx
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webview-ui/src/components/chat/hooks/usePromptHistory.tswebview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsx
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webview-ui/src/components/chat/hooks/usePromptHistory.tswebview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsx
🪛 GitHub Check: mutation-diff
webview-ui/src/components/chat/hooks/usePromptHistory.ts
[warning] 76-76: Mutation test advisory
webview-ui/src/components/chat/hooks/usePromptHistory.ts:76: Survived MethodExpression mutant (replacement: promptHistory.every((prompt, index) => prompt !== filteredPromptHistory[index])). See the job summary for the complete list and resolution guidance.
🔇 Additional comments (1)
webview-ui/src/components/chat/__tests__/ChatTextArea.spec.tsx (1)
586-615: LGTM!
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Summary
clineMessageswithout adding a user promptFixes #1600
Validation
Note
Validation ran successfully under Node 26.8.2; the repository declares Node 22.23.1.