Servo currently supports only ReadableStream with default readers and controllers, as of #32898 (PR: #34064). This is the meta issue to implement the rest, and for TODOs left in the default part.

TODOs for default streams

• Improve rooting of controller enqueued values Streams: improve rooting of enqueued values #34675
• Improve rooting of reader read requests (see discussion)
• Use Dom in native promise handlers as per Consistently use Dom in native promise handlers #33604
• Remove the current use of get_js_stream, which should be replaced by returning the actual DomRoot<ReadableStream>. ReadableStream: remove the use of get_js_stream and use DomRoot<ReadableStream> #34836
• Fix /fetch/api/response/response-stream-with-broken-then.any.html (see discussion)
• pipe-to
• ReadableStream PipeThrough
• Support ReadableByteStreamController in stream piping #36013
• Transfer with postMessage
• Remove readable streams from webidl/codegen #34674 Remove custom ReadableStream patch from WebIDL code generation #34835
• Use read_all_bytes to replace the current ConsumeBodyPromiseHandler.

Note: transfer depends on pipe-to, and pipe-to depends on writable streams.

Bytes Streams

• Add support in ReadableStream(see various todo!).
• ReadableStreamBYOBReader script: implement ReadableByteStreamController #35410
• ReadableByteStreamController script: implement ReadableByteStreamController #35410
• Tee
• ReadableStreamBYOBRequest script: implement ReadableByteStreamController #35410

Writable Streams

• WritableStream
• WritableStreamDefaultWriter
• WritableStreamDefaultController
• Transfer with postMessage
• Add abort signal. Depends on Implement AbortController #34866

Transform Streams

• Depends on writable streams.
• TransformStream Script implement TransformStream and TransformStreamDefaultController #36739
• TransformStreamDefaultController Script implement TransformStream and TransformStreamDefaultController #36739
• Transfer with postMessage

FileAPI:

• Implement Blob get_stream Implement Blob get_stream #25209 (done with Use stream in file read operation #35969)
• Follow-up on Use stream in file read operation #35969 after Refactor read operation algorithm w3c/FileAPI#208