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conformance · v136
v136 · enabling-web-applications-to-understand-bimodal-performance-timings — conformance probe
5 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.
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| id | contract | kind | verdict | detail |
|---|---|---|---|---|
performance-navigation-timing-exists |
PerformanceNavigationTiming is exposed — the entry type that now carries a confidence field. spec ↗ | typeof | … | |
get-entries-by-type-navigation |
performance.getEntriesByType('navigation') returns at least one PerformanceNavigationTiming entry for the current document. spec ↗ | script | … | |
confidence-on-navigation-entry |
The current navigation entry exposes a `confidence` member describing how reliable the timing values are. spec ↗ | script | … | |
performance-observer-supports-navigation |
PerformanceObserver.supportedEntryTypes includes 'navigation', the entry source for bimodal timing confidence. spec ↗ | script | … | |
performance-observer-constructor |
PerformanceObserver is exposed — needed to subscribe to confidence-bearing entries. spec ↗ | typeof | … |