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Coverage / webidl

Web IDL

Specification: webidl.spec.whatwg.org/. 2 interfaces defined here, 30 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 engine100% (30 of 30)2 of 2
happy-dom21.0.37% (2 of 30)1 of 2
jsdom30.1.3100% (30 of 30)2 of 2
linkedom0.18.1393% (28 of 30)1 of 2
2 of 2 interfaces
DOMException28 memberswarpdom: Node.jshappy-dom: Presentjsdom: Presentlinkedom: Node.js
QuotaExceededError2 memberswarpdom: Presenthappy-dom: Missingjsdom: Presentlinkedom: Missing

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