Contributions: Oct 11–18, 2026

30 substantial PRs (20 merged, 14 open/draft). 26 in workerd, 4 in node.

workerdMerged#7786

Pin a byte source's expectedLength as an exact total

Expand test for expectedLength and deduplicate code

workerdMerged#7784

Pin how stream constructors read source, sink and transformer members

Deduplicate and test view argument validation for stream constructors

workerdMerged#7771

Pin additional behaviors and deduplicate more

Pin additional behaviors and deduplicate code

workerdMerged#7669

Adds a new `bench` mechanism

Add a new bench mechanism for benchmarks, part of TS streams and API optimizations

workerdMerged#7770

Release a queued ReadableStream's source once its algorithms clear

Improve readable controller and tee behavior with cleanup and additional testing

workerdMerged#7767

Pin how stream constructors read source, sink and transformer members

Aligns stream constructor init arguments with WebIDL

workerdMerged#7764

Defer pull to a batch's last chunk on the auto-allocate path

Defers pull to a batch's last chunk on the auto-allocate path

workerdMerged#7763

Pin where closed settles at a native body's end

Clarifies close ordering and empty chunk handling for native bodies

workerdMerged#7752

Pin three tee() and detach divergences

Refines byob tee handling edge cases

workerdMerged#7750

Test and cleanup of reading steps

Fixed ReadableStreamDrainingReader to correctly handle last queued chunk and close sentinel

workerdMerged#7754

Account for pumped bytes in RPC stream EOF bookkeeping

Fixes RPC stream EOF bookkeeping to account for pumped bytes

workerdMerged#7727

Pin how stream constructors convert their arguments

Updated stream constructors to use WebIDL compatible argument coercion

workerdMerged#7670

Implement async trace mechanism

Implement async trace mechanism to help evaluate TS streams and API optimizations

workerdMerged#7712

Pin shared-memory writes to IdentityTransformStream

Improved handling of SharedArrayBuffer and detached ArrayBuffer writes in IdentityTransformStream

workerdMerged#7711

Pin late writes on the elided TransformStream path

Ensured consistent handling of late writes on the elided TransformStream path

workerdMerged#7709

Pin expectedLength conversion in the streams suites

Deduplicated and fixed expectedLength handling for IdentityTransformStream and FixedLengthStream

workerdMerged#7702

Move per-isolate-bootstrap to api

Move per-isolate-bootstrap to API to keep related code together

workerdMerged#7708

Begin deduplicating code in ts-streams

Deduplicate code in ts-streams to improve maintainability

workerdOpen#7804

Narrow the stream consumer fence to what the reader layer calls

Narrowed the stream consumer fence to improve ts-streams functionality

workerdOpen#7803

Check the type and identity of a fractional fill's error

Added type and identity checks for fractional fill errors in ts-streams

workerdOpen#7802

Pin the reads a cancel or close answers against a reentrant release

Fixed issues with reentrant release in streams

workerdOpen#7800

Apply multiple fixes/deduplications/test to native conduit handling

Applied fixes and deduplications to native conduit handling in streams

workerdOpen#7795

More deduplication and cleanup in TS streams

Refactored TransformStreamDefaultController to take its stream as a constructor argument

workerdOpen#7787

Allow queueMicrotask task to be minor gc'd

Optimize queueMicrotask to allow minor GC, reducing memory usage by freeing wrapped lambdas earlier.

nodeOpen#66680toolsneeds-ci

tools: update prototype-pollution rule to accept null proto obj

Update prototype-pollution rule to accept null proto objects

nodeOpen#66678needs-cidont-land-on-v22.xdont-land-on-v24.x

lib: avoid using proto: null in AbortController/AbortSignal

Avoid using __proto__: null in AbortController/AbortSignal to prevent slower DictionaryProperties mode

nodeOpen#66664lib / srcneeds-ci

lib: apply multiple updates to node:bench

Apply multiple improvements to node:bench, including built-in reports and default operation

workerdOpen#7528

Add perfetto for rust

Add perfetto support for Rust.

workerdDraft#7793

Implement Event, CustomEvent and EventTarget in TypeScript

Implement Event, CustomEvent, and EventTarget in TypeScript to move out of C++ basics.h/basics.cpp.

nodeDraft#65840lib / srcexperimentalneeds-ci

lib: implement node:logger

Implement node:logger, a structured logging API with multiple providers