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conformance · v149

v149 · inline-script-cache — conformance probe

6 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.

browser: spec: https://html.spec.whatwg.org/multipage/scripting.html chromestatus: #5132993816559616 generated 2026-06-01T08:03:56Z by conformance-author-v1-subagent
0
pass
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fail
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blocked
6
total
id contract kind verdict detail
performance-observer-exists PerformanceObserver exists so visitors can observe script compile/eval timing. exists
supports-resource-entry-type PerformanceObserver.supportedEntryTypes reports the 'resource' entry type used to measure scripts. script
supports-navigation-entry-type PerformanceObserver.supportedEntryTypes reports the 'navigation' entry type, which carries page-level scripting timing in supporting browsers. script
performance-getentries-callable performance.getEntriesByType returns an array, used by callers to inspect script-load timing. script
inline-script-executes-synchronously Inline classic <script> elements execute synchronously, the precondition for inline-script bytecode caching to be observable. script
navigation-timing-type-on-entry PerformanceNavigationTiming entries expose a .type property, the field used by code that tracks cold-vs-warm loads. script