fix(indexing): WebSocket race condition, NaN stats, file streaming (#154)#160
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DevanshuNEU merged 2 commits intoJan 6, 2026
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…#154) Bug fixes: 1. NaN/division by zero - Added safe value guards in IndexingProgress - safePercent, safeFilesProcessed, safeFilesTotal, safeFunctionsFound - Shows 'Starting...' when filesTotal is 0 - Stats show '—' instead of NaN/0/0 2. AnimatePresence warnings - Moved error state inside AnimatePresence - Error state now has proper key and exit animation - Visibility conditions properly exclude simultaneous renders - Changed error styling from red to amber (friendlier) 3. Session state - Error states now properly clear other states - showUrlInput excludes error state - showValidation excludes error state - showIndexing excludes wsHasError Closes OpenCodeIntel#154
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Fixes: - Add delay before WS close to ensure client receives completion event - Align stat field names between backend and frontend - Add current_file to progress events for streaming display - Preserve completed state when WebSocket disconnects Root cause: Backend closed WebSocket immediately after sending completion event, causing race condition where frontend's onclose fired before onmessage could process the completion. Closes OpenCodeIntel#154
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Fix Indexing Bugs (#154)
Summary
Fixes critical bugs in the playground indexing flow that caused:
Root Cause
Backend was closing WebSocket immediately after sending 'completed' event. Due to network/event loop timing, frontend's
onclosehandler fired beforeonmessagecould process the completion event → state never updated → blank screen.Additionally, backend and frontend had mismatched field names for stats.
Changes
Backend
ws_playground.pyanonymous_indexer.pyfiles_indexed→files_processed,functions_found→functions_indexed,time_taken_seconds→indexing_time_secondsanonymous_indexer.pycurrent_fileparameter to progress callbackindexer_optimized.pycurrent_fileto progress eventsFrontend
useIndexingWebSocket.tsuseIndexingWebSocket.tsTesting
https://github.com/pallets/flask)Before/After
Before:
NaN,NaN,NaNsAfter:
83 Files,1,616 Functions,81.1sCloses #154