stream: copy SAB-backed chunks in iter consumers#64382
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Ensure bytes() copies single chunks backed by SharedArrayBuffer so arrayBuffer() and arrayBufferSync() return ArrayBuffer instances as specified. Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com> Assisted-by: openai:gpt-5.5
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Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #64382 +/- ##
==========================================
- Coverage 90.23% 90.23% -0.01%
==========================================
Files 741 741
Lines 241194 241197 +3
Branches 45432 45427 -5
==========================================
Hits 217640 217640
+ Misses 15129 15124 -5
- Partials 8425 8433 +8
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Fixes: #64381
This updates the
stream/iterbyte consumers to avoid preservingSharedArrayBufferbacking stores when collecting a single full-buffer chunk.bytes()andbytesSync()now copy SAB-backed chunks into a newUint8Array, andarrayBuffer()/arrayBufferSync()defensively copySAB-backed data into a normal
ArrayBuffer.The existing SharedArrayBuffer stream/iter test coverage has been tightened to
assert that SAB-backed input produces non-shared output for these consumers.
Assisted-by: openai:gpt-5.5