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conformance · v133
v133 · resource-timing-revert-responsestart-change-and-introduce-firstresponseheadersst — 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.
0
pass
0
fail
0
blocked
5
total
| id | contract | kind | verdict | detail |
|---|---|---|---|---|
performance-resource-timing-exposed |
PerformanceResourceTiming is exposed. | exists | … | |
responsestart-still-on-prototype |
responseStart remains on PerformanceResourceTiming.prototype (reverted to its pre-regression meaning). | script | … | |
firstinterimresponsestart-on-prototype |
PerformanceResourceTiming.prototype exposes firstInterimResponseStart for the first interim (e.g. 103 Early Hints) response. spec ↗ | script | … | |
finalresponseheadersstart-on-prototype |
PerformanceResourceTiming.prototype exposes finalResponseHeadersStart for the final response's header bytes. spec ↗ | script | … | |
supportedentrytypes-includes-resource |
PerformanceObserver.supportedEntryTypes includes 'resource'. | script | … |