feat(browser): Emit web vitals as streamed spans#19827

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logaretm wants to merge 15 commits intodevelopfrom

awad/js-17931-webvitals-v2-spans

Commits on Apr 13, 2026

feat(browser-utils): Add FCP instrumentation handler and export INP_ENTRY_MAP

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Lms24
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feat(browser): Emit web vitals as streamed spans when span streaming is enabled

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test(browser): Add integration tests for streamed web vital spans

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fix(browser): Only emit LCP, CLS, INP as streamed spans; disable standalone spans when streaming

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fix(browser): Add MAX_PLAUSIBLE_INP_DURATION check to streamed INP span path

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fix(browser): Prevent duplicate INP spans when span streaming is enabled

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fix(browser-utils): Remove dead FCP instrumentation code

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fix(browser-utils): Add fallback for browserPerformanceTimeOrigin in _sendInpSpan

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fix(browser-utils): Cache browserPerformanceTimeOrigin call in _sendLcpSpan

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fix(browser): Skip INP interaction listeners when span streaming is enabled

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fix(browser): Skip CLS/LCP measurements on pageload span when streaming

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refactor(browser-utils): Share MAX_PLAUSIBLE_INP_DURATION between INP handlers

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fix(browser): Fix ReferenceError for spanStreamingEnabled in afterAllSetup

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fix(browser): Skip redundant CLS/LCP handlers when span streaming is enabled

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Commits on Apr 14, 2026

send wv spans as child spans of pageload/inp root span
Lms24
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