workerdMerged#8236
Consolidate Event subclasses
Consolidate Event subclasses to prepare for TypeScript migration
Contributions: Nov 1–8, 2026
14 substantial PRs (9 merged, 6 open/draft). 13 in workerd, 1 in node.
workerdMerged#8199
Implement embedder per-isolate bootstrap hook
Add embedder per-isolate bootstrap hook for custom scripts
workerdMerged#8192
Fourth round of TS-streams perf improvements
Fourth round of TypeScript streams performance improvements, narrowing gaps with C++
workerdMerged#8188
Third round of TS streams perf improvements
Third round of TypeScript streams performance improvements, reducing overall time to 0.22x C++
workerdMerged#8174
More TS-Streams performance improvements.
Additional performance improvements for TS-Streams, achieving 3.6x faster overall performance compared to C++
workerdMerged#8109
Migrate EventSource to Typescript
Migration of EventSource to TypeScript as part of ongoing migration of EventTarget subclasses
workerdMerged#8167
Perf improvements to ts-streams impl, first pass
Performance improvements to ts-streams implementation using injected arguments and fast properties mode
workerdMerged#8105
Migrate MessageChannel/MessagePort to TypeScript
Migration of MessageChannel and MessagePort to TypeScript, preparing for EventTarget migration
workerdOpen#8270
TS URLPattern implementation
TypeScript implementation of URLPattern
workerdOpen#8266
Implement the TS URL
TypeScript implementation of URL
workerdOpen#8225
Serialize classes implemented in JavaScript
Serialization support for JavaScript classes
workerdOpen#8222
Move email.h/c++ APIs to workerd
Moved email.h/c++ APIs to workerd
workerdDraft#8272
TS DOMException
TypeScript port of DOMException
nodeDraft#67288lib / srcneeds-ci
src: experimental green threads implementation
Experimental implementation of green threads for Node.js, providing a lightweight worker alternative