mirror of https://github.com/garrytan/gstack.git
6e6d7c2efc
browse/src/sse-helpers.ts owns the SSE cleanup invariant: cleanup runs on abort, enqueue failure, AND heartbeat failure, exactly once, regardless of which edge fires first. Pre-helper, /activity/stream and /inspector/events ran cleanup only on the req.signal.abort edge. If the underlying TCP died without firing abort (Chromium MV3 service-worker suspend, intermediate proxy half-close), the subscriber closure stayed in the Set capturing the ReadableStreamDefaultController plus any payloads queued behind it. Over a multi-day sidebar session this compounded into multi-MB of retained controllers per dead connection. Caller surface: initialReplay (optional, for gap replay or state snapshots), subscribe (live-event source), liveEventName (SSE event name for live wrap), heartbeatMs. send() helper handles JSON encoding with sanitizeReplacer + lone-surrogate stripping. Unit tests pin all three cleanup edges + idempotency + replay ordering + surrogate sanitization. Endpoint refactors land in the next commit. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> |
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| PLAN-snapshot-dropdown-interactive.md | ||
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