Coverage / streams

Streams

Specification: streams.spec.whatwg.org/. 13 interfaces defined here, 64 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
Engine	Members present	Interfaces present
warpdom0.1.6maintainer's engine	0% (0 of 64)	0 of 13
happy-dom21.0.3	17% (11 of 64)	3 of 13
jsdom30.1.3	0% (0 of 64)	0 of 13
linkedom0.18.13	94% (60 of 64)	13 of 13

ByteLengthQueuingStrategy2 membersMissingMissingMissingNode.js

CompressionStream2 members added to CompressionStream (defined in Compression)0/20/20/22/2

CountQueuingStrategy2 membersMissingMissingMissingNode.js

DecompressionStream2 members added to DecompressionStream (defined in Compression)0/20/20/22/2

ReadableByteStreamController5 membersMissingMissingMissingNode.js

ReadableStream9 membersMissingNode.jsMissingNode.js

ReadableStreamBYOBReader4 membersMissingMissingMissingNode.js

ReadableStreamBYOBRequest3 membersMissingMissingMissingNode.js

ReadableStreamDefaultController4 membersMissingMissingMissingNode.js

ReadableStreamDefaultReader4 membersMissingMissingMissingNode.js

SFrameDecryptorStream2 members added to SFrameDecryptorStream (defined in WebRTC Encoded Transform)0/20/20/20/2

SFrameEncryptorStream2 members added to SFrameEncryptorStream (defined in WebRTC Encoded Transform)0/20/20/20/2

TextDecoderStream2 members added to TextDecoderStream (defined in Encoding)0/20/20/22/2

TextEncoderStream2 members added to TextEncoderStream (defined in Encoding)0/20/20/22/2

TransformStream2 membersMissingPresentMissingNode.js

TransformStreamDefaultController4 membersMissingMissingMissingNode.js

WritableStream4 membersMissingPresentMissingNode.js

WritableStreamDefaultController2 membersMissingMissingMissingNode.js

WritableStreamDefaultWriter7 membersMissingMissingMissingNode.js

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