feat(audience): remove session_start and session_end events [SDK-689]#2903
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Stop emitting client-side session_start/session_end from the pixel and web SDK. Session tracking is unchanged: every message still carries sessionId from the 30-minute rolling session cookie, so boundaries are derived from that rather than dedicated events. Replaces the now-unused getOrCreateSession /SessionResult with getOrCreateSessionId. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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✅ Pixel Bundle Size — @imtbl/pixel
Budget: 10.00 KB gzipped (warn at 8.00 KB) |
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| Metric | Size | Delta vs main (4bad096) |
|---|---|---|
| Gzipped | 20503 bytes (20.02 KB) | -196 bytes |
| Raw (minified) | 59640 bytes | -860 bytes |
Budget: 24.00 KB gzipped (warn at 20.00 KB)
⚠️ Approaching budget — gzipped size exceeds 20.00 KB warning threshold.
nattb8
marked this pull request as ready for review
July 17, 2026 03:27
shineli1984
approved these changes
Jul 17, 2026
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Summary
Stops the pixel and web SDK from emitting the client-side
session_startandsession_endevents. Session tracking is otherwise unchanged: every message still carries asessionIdfrom the 30-minute rolling session cookie, so session boundaries are derived from that rather than from dedicated events. Internally the now-unusedgetOrCreateSession/SessionResultare replaced bygetOrCreateSessionId.Note for consumers:
session_start/session_endare no longer emitted by either surface, and@imtbl/audience-coreno longer exportsgetOrCreateSession/SessionResult.Ticket: SDK-689
Test plan
pnpm testpasses in core (248), pixel (50), and sdk (89 + 5 CDN-artifact build test)pnpm lintpasses in core, pixel, and sdksession_start/session_endremain in source andsessionIdis still stamped on every message🤖 Generated with Claude Code