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stream: rewrite WHATWG Stream in C++ - #63872

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mcollina wants to merge 45 commits into

nodejs:mainfrom

mcollina:webstreams-cpp

Commits on Jun 8, 2026
- src: add C++ webstreams binding + ReadableStream default object model
  
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- src: add C++ ReadableByteStream object model (BYOB)
  
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Commits on Jun 9, 2026
- src: add C++ WritableStream object model
  
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  b86a284
- src: add C++ TransformStream object model
  
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  753e06f
- src: expose webstreams C++ constructors for the public flip
  
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  815ea77
- src: add webstreams introspection + size-mode groundwork for the flip
  
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  6d81a27
- WIP src: flip webstreams public API to the C++ engine (NOT yet green)
  
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  2bffbc3
- WIP src: webstreams flip now passes the full WPT streams suite
  
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  dff1293
- src: make webstreams native methods throw ERR_INVALID_THIS
  
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  eb8458b
- src: show stream in TransformStreamDefaultController inspect
  
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  c112708
- test,src: de-couple test-whatwg-writablestream from kState
  
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  82bfcc2
- src,test: fix nested transferable streams; de-couple byte/transfer tests
  
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  0aaad29
- src,test: de-couple test-whatwg-readablestream from kState; validate pipeTo args
  
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  2cebd45
- src: guard webstreams JSTransferable bridge against a null host object
  
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  4bbc362
Commits on Jun 10, 2026
- src,test: reject SAB-backed byte views; de-couple test-blob from kState
  
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  e665464
- src: cache readable controller pull-reaction functions
  
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  cea71e0
- src: avoid V8 API crossings on webstreams hot paths
  
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  2e0f894
- src,lib: add pipeTo fast drain and cache write reactions
  
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  3939511
- src: cheapen webstreams creation paths
  
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  300dc16
- src,lib: call raw webstreams pull/write algorithms from C++
  
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  1f0e408
- src,lib: trim per-instance webstreams iterator and transform allocations
  
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  24420ae
- stream: move pipeTo's hot loop fully into C++
  
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  24fc92e
- stream: build buffered read results in JS via a single-crossing fast read
  
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  8423ae6
- stream: build reader released errors lazily
  
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  f040355
- stream: replace eagerly-allocating deques with a lazy FIFO queue
  
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  17dce4c
- stream: make the writer ready/closed promise slots lazy
  
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  8bb8446
Commits on Jun 11, 2026
- stream: manage stream readers with cppgc
  
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  20c9a58
- src: allow cppgc wrappers to opt out of realm tracking
  
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  bed540b
- stream: keep pipeTo and tee internals unobservable
  
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  835a531
- stream: skip start plumbing for startless TransformStreams
  
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  43c7d85
- stream: store value queues as one global handle per chunk
  
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  9a3a834
- stream: skip the pull round trip when there is no pull algorithm
  
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  fabff07
- stream: manage WritableStreamDefaultWriter with cppgc
  
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  21a684f
- stream: manage WritableStream and its controller with cppgc
  
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  379040d
- stream: manage ReadableStream and its controllers with cppgc
  
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  204ac24
- stream: manage TransformStream and its controller with cppgc
  
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  5fe49a9
- stream: settle parked reads through a JIT closure
  
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  6b23e9a
- stream: settle parked reads from the enqueue wrapper
  
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  ed87aed
- stream: settle BYOB reads through a JIT closure, lighten BYOBRequest
  
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  fc2f0c8
Commits on Jun 12, 2026
- stream: settle byte-stream default reads through JIT closures
  
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  97223b3
- stream: cache the transform sink-write continuation per stream
  
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  9c55050
- stream: materialize byte-path buffers and views in JIT code
  
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  d2e114e
- stream: build the BYOBRequest view in JIT code, make view reads free
  
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  5942292
- stream: couple transform backpressure directly, no change promise
  
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- src,lib: format and lint the webstreams engine
  
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  d718585

Commits

Commits on Jun 8, 2026

Commits on Jun 9, 2026

Commits on Jun 10, 2026

Commits on Jun 11, 2026

Commits on Jun 12, 2026