feat(audience): add page-unload flush to MessageQueue#2815
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feat(audience): add page-unload flush to MessageQueue#2815
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Adds visibilitychange and pagehide listeners that flush queued events via navigator.sendBeacon on page unload, preventing event loss when users navigate away. Adds destroy() for clean teardown. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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- Skip beacon if an async flush is already in flight (this.flushing guard) - Add test for sendBeacon being unavailable (falls back to async flush) - Add test for beacon skipped when async flush is in flight Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
ImmutableJeffrey
approved these changes
Apr 3, 2026
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Summary
visibilitychangeandpagehidelisteners toMessageQueuethat flush queued events vianavigator.sendBeacon()on page unload, preventing event loss when users navigate awaydestroy()method for clean teardown (stops timer, removes listeners, flushes remaining events)flush()ifsendBeaconis unavailable or failsSDK-43
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