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Coverage / performance-timeline

Performance Timeline

Specification: w3c.github.io/performance-timeline/. 3 interfaces defined here, 17 members exposed on Window (Web IDL). Group: Test DOM core.

Existence only: “present” means the name is defined where Web IDL puts it, not that it behaves as the standard says. The featured checks test behavior.

Share present per engine
EngineMembers presentInterfaces present
warpdom0.1.6maintainer's engine0% (0 of 17)0 of 3
happy-dom21.0.353% (9 of 17)3 of 3
jsdom30.1.30% (0 of 17)0 of 3
linkedom0.18.1388% (15 of 17)3 of 3
4 of 4 interfaces
Performance3 members added to Performance (defined in High Resolution Time)warpdom: 0/3happy-dom: 0/3jsdom: 0/3linkedom: 3/3
PerformanceEntry7 memberswarpdom: Missinghappy-dom: Node.jsjsdom: Missinglinkedom: Node.js
PerformanceObserver4 memberswarpdom: Missinghappy-dom: Node.jsjsdom: Missinglinkedom: Node.js
PerformanceObserverEntryList3 memberswarpdom: Missinghappy-dom: Presentjsdom: Missinglinkedom: Node.js

Probed 2026-10-19. Data: idl.json (CC BY 4.0).