Contributions: Oct 25 – Nov 1, 2026

12 substantial PRs (11 merged, 3 open/draft). 12 in workerd.

workerdMerged#8095

Moved private handles behind v8::Private for better security and added hardening around reads.

workerdMerged#8087

Fixed error handling to prevent leaking legacy callee's stack to enhanced callers.

workerdMerged#8056

Released endpoints of native TypeScript streams pipe for better resource management.

workerdMerged#8053

Encode string chunks as UTF-8 when pumping TypeScript streams to fix compatibility with C++ bridge's pump implementation

workerdMerged#8050

Honor a default source's expectedLength in TypeScript streams to ensure accurate length reporting

workerdMerged#8060

Fixed patched then handling in TypeScript consumer methods.

workerdMerged#8052

Cancel a queued TypeScript stream when its pump is dropped to prevent resource leaks

workerdMerged#8042

Fix formData() corrupting binary parts with TypeScript streams by reading the body as undecoded bytes

workerdMerged#7934

Added benchmarks for TS/C++ streams to measure performance.

workerdOpen#8109

Migrated EventSource to TypeScript as part of the migration of EventTarget subclasses.

workerdOpen#8105

Migrated MessageChannel and MessagePort to TypeScript to facilitate further migrations.

workerdDraft#7793

Implemented Event, CustomEvent, and EventTarget in TypeScript, starting the migration out of C++ basics.