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

Merged

Lms24 merged 22 commits intodevelopfrom

awad/js-17931-webvitals-v2-spans

Apr 16, 2026

Commits on Apr 15, 2026

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

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

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Lms24
committed
test(browser): Add integration tests for streamed web vital spans

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Lms24
committed
fix(browser): Only emit LCP, CLS, INP as streamed spans; disable standalone spans when streaming

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Lms24
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fix(browser): Add MAX_PLAUSIBLE_INP_DURATION check to streamed INP span path

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Lms24
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fix(browser): Prevent duplicate INP spans when span streaming is enabled

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Lms24
committed
fix(browser-utils): Remove dead FCP instrumentation code

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Lms24
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fix(browser-utils): Add fallback for browserPerformanceTimeOrigin in _sendInpSpan

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Lms24
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fix(browser-utils): Cache browserPerformanceTimeOrigin call in _sendLcpSpan

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Lms24
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fix(browser): Skip INP interaction listeners when span streaming is enabled

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Lms24
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fix(browser): Skip CLS/LCP measurements on pageload span when streaming

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Lms24
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refactor(browser-utils): Share MAX_PLAUSIBLE_INP_DURATION between INP handlers

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Lms24
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fix(browser): Fix ReferenceError for spanStreamingEnabled in afterAllSetup

authored and
Lms24
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fix(browser): Skip redundant CLS/LCP handlers when span streaming is enabled

authored and
Lms24
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send wv spans as child spans of pageload/inp root span
Lms24
committed
fix ttfb, fb, fco, measurements, connection attributes
Lms24
committed
fix integration tests after attribute name changes
Lms24
committed
guard DEBUG_BUILD && fix size limit
Lms24
committed
cleanup
Lms24
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fix size limit again + unit tests
Lms24
committed
cleanup
Lms24
committed
another cleanup lol
Lms24
committed

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Uh oh!

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

feat(browser): Emit web vitals as streamed spans#19827
Lms24 merged 22 commits intodevelopfrom
awad/js-17931-webvitals-v2-spans

Commits on Apr 15, 2026

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

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

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

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

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

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

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

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

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

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

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

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

fix(browser): Fix ReferenceError for spanStreamingEnabled in afterAllSetup

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

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

fix ttfb, fb, fco, measurements, connection attributes

fix integration tests after attribute name changes

guard DEBUG_BUILD && fix size limit

cleanup

fix size limit again + unit tests

cleanup

another cleanup lol