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What changed

The data is brought up to date automatically every week and when an engine releases a new version: the latest warpdom, happy-dom, jsdom and linkedom, and the latest Web IDL from @webref/idl, go through the same probes. Each update is a pull request in the repository; updates that change a result are reviewed by the maintainer before they are published. Newest first. Data: changelog.json.

2026-10-19 (2)​

Engines: warpdom 0.1.5 → 0.1.6, happy-dom 21.0.3, jsdom 30.1.3, linkedom 0.18.13.

No status changed.

Web IDL existence​

  • warpdom: 5 interfaces changed status, 66 members now present, 0 now missing (examples): console missing → present, Headers missing → present, URL missing → present, URLSearchParams missing → present, WebAssembly missing → Node.js's own global, console.assert now present, console.clear now present, console.debug now present, console.error now present, console.info now present, console.log now present, console.table now present, console.trace now present, console.warn now present, console.dir now present, console.dirxml now present, console.count now present, console.countReset now present, console.group now present, console.groupCollapsed now present, console.groupEnd now present, console.time now present, console.timeLog now present, console.timeEnd now present, Headers.append now present.

2026-10-19 (1)​

Engines: warpdom 0.1.4 → 0.1.5, happy-dom 21.0.3, jsdom 30.1.3, linkedom 0.18.13.

Web IDL existence​

  • warpdom: 6 interfaces changed status, 22 members now present, 0 now missing (examples): Blob missing → present, File missing → present, TextDecoder missing → present, TextEncoder missing → present, Performance missing → present, Crypto missing → present, Blob.size now present, Blob.type now present, Blob.slice now present, Blob.text now present, Blob.arrayBuffer now present, Blob.bytes now present, File.name now present, File.lastModified now present, TextDecoder.decode now present, TextDecoder.encoding now present, TextDecoder.fatal now present, TextDecoder.ignoreBOM now present, TextEncoder.encode now present, TextEncoder.encodeInto now present, TextEncoder.encoding now present, Performance.now now present, Performance.timeOrigin now present, Performance.toJSON now present, Window.performance now present, Crypto.getRandomValues now present.

2026-10-17 (2)​

Engines: warpdom 0.1.3 → 0.1.4, happy-dom 21.0.3, jsdom 30.1.3, linkedom 0.18.13.

No status changed.

Web IDL existence​

No interface or member changed for any engine.

2026-10-17 (1)​

First published data: 22 featured APIs with behavior checks, and the Web IDL existence pass over every Window-exposed interface in @webref/idl 3.85.2 (browser-specs 5.3.0).

Engines: warpdom 0.1.3, happy-dom 21.0.3, jsdom 30.1.3, linkedom 0.18.13.