fix(browser): semconv HTTP status by default; release browser 0.10.1, effect-sdk 0.9.1 - #1184
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…fault The HTTP semantic conventions say a client span with a 4xx or 5xx response SHOULD be Error, with error.type set to the status code and no status description. The fetch and XHR instrumentations already do that at 0.222, but the SDK's status policy cleared it unless the app listed the status in errors.captureHttpStatus, and added an error.message the registry marks deprecated. - errors.captureHttpStatus defaults to [[400, 599]]; narrowing it clears the Error for the statuses left out. - No error.message on status or network-failure errors; error.type alone classifies them (httpStatusError becomes httpErrorType). - The customer browser SDK page gets the stack's sections, which never reached main: the docs PR was merged into its base branch after that branch had already landed. Three-way merged with #1168's edits.
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Included review availability: This review used your included allowance. Your plan provides up to 4 included reviews per hour; 1 remain after this review. 📝 WalkthroughWalkthroughThe Browser SDK now treats HTTP 4xx and 5xx client responses as errors by default and assigns status-based error types. Fetch tracing also recognizes timeout aborts as errors. The PR updates tests, SDK version declarations, HTTP handling guidance, and documentation for Browser SDK features. ChangesBrowser SDK HTTP errors and documentation
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix Suggested reviewers: Merge Risk: ⚪ Minimal · up to The HTTP status and timeout handling changes have no established merge-blocking defect. Timeout descriptions remain compatible with the documented network-failure behavior. Architecture SummaryArchitecture risk: 🔵 Low · up to The change affects 5 systems. Changed systems: Architecture concerns Review detailsSystems and components
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Patch releases. browser 0.10.0 was published from outside the repo, so the browser package goes from 0.9.0 in the tree to 0.10.1 to stay above npm.
Makisuo
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Maple review🟢 Confidence 4/5 · likely safe to merge The browser SDK's export-time HTTP status policy now follows the client-span semconv by default: every 4xx/5xx makes a client span
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Review comments at @apps/landing/src/content/docs/session-replay/browser-sdk.md:
- Line 260: Update the rejected-fetch handling in the tracing logic referenced
by the browser SDK documentation so timeout-triggered aborts are recorded as
errors while intentional request aborts remain excluded. Distinguish timeout
aborts from other cases where request.signal.aborted is true, and align the
documentation sentence with the resulting behavior.
- Line 454: Update the guarantee in the tracing.sampleRate documentation to say
that standalone exception spans are always sent, rather than claiming all error
spans are. Keep the surrounding sampling-rate behavior unchanged.
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apps/landing/src/content/docs/session-replay/browser-sdk.mddocs/browser-sdk.mdpackages/browser/README.mdpackages/browser/package.jsonpackages/browser/src/http-status.test.tspackages/browser/src/http-status.tspackages/browser/src/tracing.browser.test.tspackages/browser/src/version.tspackages/effect-sdk/package.jsonpackages/effect-sdk/src/version.tspackages/sdk-core/src/error-filters.tspackages/sdk-core/src/http-status.tspackages/sdk-core/src/http.test.tspackages/sdk-core/src/index.ts
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…antee - AbortSignal.timeout() aborts the signal and rejects with a TimeoutError, so the abort check skipped it. A timeout now marks the span Error with error.type TimeoutError; aborting with the app's own controller still does not. - The docs promised every error span is sent whatever tracing.sampleRate is; only errors reported as their own spans are. Failed request spans follow the session's sampling.
Maple review🟢 Confidence 5/5 · safe to merge The follow-up makes a fetch rejected by
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Why
The HTTP semantic conventions (
docs/http/http-spans.md) say, for client spans:Error;Error;error.typeSHOULD be the status code, as a string;The fetch and XHR instrumentations already do this at 0.222. The SDK's export-time status policy undid it: a status only counted if the app listed it in
errors.captureHttpStatus(default none), somaincurrently reports failed fetches less than a plain OTel setup would. It also addederror.message, which the semconv registry marks deprecated.What changes
errors.captureHttpStatusdefaults to[[400, 599]](the spec). Narrowing it, e.g.[[500, 599]], clears theErrorfor statuses left out.error.messageon status errors or network failures.error.typealone classifies them, andsdk-core'shttpStatusErrorbecomeshttpErrorType.apps/landing/.../session-replay/browser-sdk.md) gets the stack's sections, which never reachedmain. The docs PR (docs(landing): browser SDK logs, Web Vitals, error tooling, replay on error, React #1159) was merged into its base branch after that branch had already landed. The page is three-way merged with fix(browser): address review findings in the browser SDK and session replay #1168's edits to it and updated for the new default.docs/browser-sdk.mdand the README describe the new default.Semantic-conventions pass
Every attribute key the browser SDK,
@maple/sdk-coreand@maple/browser-sessionemit was checked against the semconv registry (v1.44.0).Stable or development, and correct:
http.request.method,http.response.status_code,url.full,url.pathhttp.request.header.*,http.response.header.*,http.response.body.sizeerror.type,exception.*,code.*browser.web_vital.*(and thebrowser.web_vitalevent)session.id,user.id,service.namespace,deployment.environment.name,vcs.ref.head.revisionFlagged:
error.message(deprecated): removed in this PR.http.method,http.status_code,http.url(renamed): only read as fallbacks when classifying spans from other instrumentations. The SDK doesn't emit them; the 0.222 instrumentations emit the stable keys.deployment.environment(renamed): the existing deliberate dual-emit next todeployment.environment.name, kept because warehouse materialized views still read the legacy key.app.navigation.interrupted: a custom attribute from before this work. By repo convention it would bemaple.*; left alone here to avoid a silent rename.Testing
packages/sdk-core: typecheck and tests (49), covering the default range anderror.type-only typing.packages/browser: typecheck and tests (124). Tests cover:Errorwith no description;error.message.packages/effect-sdk: typecheck, since it depends onsdk-core.apps/landingdocs-search test; size budgets; oxlint/oxfmt.Need help on this PR? Tag
@codesmith-botwith what you need. Autofix is disabled.Release
Also bumps the SDKs for a patch release:
@maple-dev/browser0.10.1 (npm already has 0.10.0, published outside the repo, while the tree said 0.9.0) and@maple-dev/effect-sdk0.9.1. Publishing is a separate manual step after merge.Summary by CodeRabbit
fetchand XHR responses with HTTP 4xx or 5xx statuses are captured as errors by default, with the status code recorded as the error type. Configure status capture to narrow which responses count as errors; network failures remain errors.AbortControllerare not.