Cloudflare workerd

What's Changed

• Python: Make fetch work with Python Request as argument by @hoodmane in https://github.com/cloudflare/workerd/pull/4926
• Update the comment for the enable_nodejs_http_server_modules flag by @vicb in https://github.com/cloudflare/workerd/pull/4925
• add new nodejs_eol compat flags by @anonrig in https://github.com/cloudflare/workerd/pull/4922

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250828.0...v1.20250828.1

What's Changed

• Adds compatDisableFlag for pythonDedicatedSnapshot by @dom96 in https://github.com/cloudflare/workerd/pull/4904
• Add legacyGlobalHandlers check for test handler early exit by @dom96 in https://github.com/cloudflare/workerd/pull/4901
• Update streams/standard to use checked queue by @jasnell in https://github.com/cloudflare/workerd/pull/4884
• Support both JS and Python headers in asgi by @dom96 in https://github.com/cloudflare/workerd/pull/4900
• Python: Remove pythonDedicatedSnapshot impliedByAfterDate by @hoodmane in https://github.com/cloudflare/workerd/pull/4914
• feat: add email queuing compat flag for email sending queuing by @LuisDuarte1 in https://github.com/cloudflare/workerd/pull/4913
• nfc: remove version check now that v8 is 14.0 by @tewaro in https://github.com/cloudflare/workerd/pull/4920
• Advoid deep recursion in advanceQueueIfNeeded by @jasnell in https://github.com/cloudflare/workerd/pull/4918
• EW-9373 Fuse onset event and worker span by @fhanau in https://github.com/cloudflare/workerd/pull/4847
• Move all Python tests to using default entrypoint handlers. by @dom96 in https://github.com/cloudflare/workerd/pull/4899
• [build] 08-26-25 build maintenance by @fhanau in https://github.com/cloudflare/workerd/pull/4907
• Use /bundle as the starting cwd always by @jasnell in https://github.com/cloudflare/workerd/pull/4921
• Update v8-deps by @tewaro in https://github.com/cloudflare/workerd/pull/4919
• [TD] Update api/base64 to use jsg::BufferSource by @jasnell in https://github.com/cloudflare/workerd/pull/4908
• [o11y] Add entrypoint to trace information by @fhanau in https://github.com/cloudflare/workerd/pull/4912
• [TD] Add jsg::JsFunction by @jasnell in https://github.com/cloudflare/workerd/pull/4891
• Update validate method to extend to new method types. by @mar-cf in https://github.com/cloudflare/workerd/pull/4923
• Reverting string accounting temporarily to investigate perf impact. by @danlapid in https://github.com/cloudflare/workerd/pull/4924

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250827.0...v1.20250828.0

What's Changed

• Revert "Python: Mark 0.28.2 compat date not experimental (#4865)" by @hoodmane in https://github.com/cloudflare/workerd/pull/4898
• Python: Move the static methods defined on Response to FetchResponse by @hoodmane in https://github.com/cloudflare/workerd/pull/4885
• Replace jsg::alloc uses with js.alloc by @jasnell in https://github.com/cloudflare/workerd/pull/4897
• EW-9282 EW-9451 Fix missing onset event for JSRpc edge cases, add JSRpc regression test by @fhanau in https://github.com/cloudflare/workerd/pull/4881
• Remove experimental flag from node:fs and node:os modules by @jasnell in https://github.com/cloudflare/workerd/pull/4903
• do not throw an error on insecureHTTPParser option by @anonrig in https://github.com/cloudflare/workerd/pull/4906
• EW-9366 [o11y] Implement proper timestamp support for STW by @fhanau in https://github.com/cloudflare/workerd/pull/4767
• fix node:http header duplication by @anonrig in https://github.com/cloudflare/workerd/pull/4905
• fix Buffer.isBuffer returning true for true by @anonrig in https://github.com/cloudflare/workerd/pull/4910
• EW-9367 [o11y] Implement proper event size limits for streaming tail worker by @fhanau in https://github.com/cloudflare/workerd/pull/4832
• Simplify tryResolveMainModule to use js.resolveModule by @jasnell in https://github.com/cloudflare/workerd/pull/4848
• Ensure that the isolate always has a capnp schema loader associated with it by @jasnell in https://github.com/cloudflare/workerd/pull/4855

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250826.0...v1.20250827.0

What's Changed

• Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/4883
• Python: Mark 0.28.2 compat date not experimental by @hoodmane in https://github.com/cloudflare/workerd/pull/4865
• Python: Response: Handle instance json method by @hoodmane in https://github.com/cloudflare/workerd/pull/4867
• Python: Patch context.waitUntil to prevent problems with proxy lifetimes by @hoodmane in https://github.com/cloudflare/workerd/pull/4808
• Don't run worker when creating snapshot with new entrypoint handlers. by @dom96 in https://github.com/cloudflare/workerd/pull/4868
• Reapply the error detail serialization enhancements with improvements and autogate by @jasnell in https://github.com/cloudflare/workerd/pull/4800
• [TD] Use jsg::JsValue and jsg::JsRef for CommonJS exports by @jasnell in https://github.com/cloudflare/workerd/pull/4888
• WebSocket support in AI Binding by @thatsKevinJain in https://github.com/cloudflare/workerd/pull/4754
• [TD] Make external memory adjustments immediately by @jasnell in https://github.com/cloudflare/workerd/pull/4889
• R2-3382: Throw Error on Invalid ETag by @helloimalastair in https://github.com/cloudflare/workerd/pull/4752
• Implementing workerd::util::Queue<T> by @jasnell in https://github.com/cloudflare/workerd/pull/4879
• Add annotations to fetch span by @jmorrell-cloudflare in https://github.com/cloudflare/workerd/pull/4833
• [TD] Remove the obsolete jsg::Varargs type. by @jasnell in https://github.com/cloudflare/workerd/pull/4894
• IMAGES-1735: Adding support for segment and face gravity in bindings by @deven96 in https://github.com/cloudflare/workerd/pull/4890
• IMAGES-1735: Extending documentation for segment by @deven96 in https://github.com/cloudflare/workerd/pull/4896

New Contributors

• @deven96 made their first contribution in https://github.com/cloudflare/workerd/pull/4890

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250823.0...v1.20250826.0

What's Changed

• add missing node:util methods by @anonrig in https://github.com/cloudflare/workerd/pull/4856
• Python: Add all to workers.py by @hoodmane in https://github.com/cloudflare/workerd/pull/4866
• Disable dns-nodejs-test by @hoodmane in https://github.com/cloudflare/workerd/pull/4869
• fix node dns tests by @anonrig in https://github.com/cloudflare/workerd/pull/4871
• add remaining node:module methods by @anonrig in https://github.com/cloudflare/workerd/pull/4857
• add missing node:crypto methods by @anonrig in https://github.com/cloudflare/workerd/pull/4873
• When invalid headers are received, throw a kj exception by @jasnell in https://github.com/cloudflare/workerd/pull/4874
• Update the eventsource test to use the fetcher option by @jasnell in https://github.com/cloudflare/workerd/pull/4876
• jsg::Promise::attach for spans by @danlapid in https://github.com/cloudflare/workerd/pull/4861
• Update v8 to 14.0.345.4 by @tewaro in https://github.com/cloudflare/workerd/pull/4872

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250822.0...v1.20250823.0

What's Changed

• Make format.py work even when not run from workerd root directory by @hoodmane in https://github.com/cloudflare/workerd/pull/4849
• Python: refactor topLevelEntropy management by @hoodmane in https://github.com/cloudflare/workerd/pull/4758
• Python: Move snapshot test bazel config into workerd by @hoodmane in https://github.com/cloudflare/workerd/pull/4850
• Pyodide 0.28.2 by @hoodmane in https://github.com/cloudflare/workerd/pull/4836
• Fixup missing branch in setLastModified by @jasnell in https://github.com/cloudflare/workerd/pull/4853
• Python: Cleanup after 0.28.2 update by @hoodmane in https://github.com/cloudflare/workerd/pull/4854
• just update-deps workerd-cxx by @mikea in https://github.com/cloudflare/workerd/pull/4846
• Switch process from lazy property to non-lazy by @jasnell in https://github.com/cloudflare/workerd/pull/4859
• Temporary logging for headers investigation by @jasnell in https://github.com/cloudflare/workerd/pull/4858
• Fix Redirects for internalNewHttpClient by @tewaro in https://github.com/cloudflare/workerd/pull/4819
• Add missing queue empty check in steams by @jasnell in https://github.com/cloudflare/workerd/pull/4860

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250821.0...v1.20250822.0

What's Changed

• Fixes Python SDK test to use the new default entrypoint correctly. by @dom96 in https://github.com/cloudflare/workerd/pull/4817
• Python: Improvements to upload_bundles.py script by @hoodmane in https://github.com/cloudflare/workerd/pull/4837
• Python: Make release-python-runtime push changes to python_metadata.bzl to branch by @hoodmane in https://github.com/cloudflare/workerd/pull/4838
• release-python-runtime: Don't update released bundles by default by @hoodmane in https://github.com/cloudflare/workerd/pull/4839
• Fix double write of entry_size by @danlapid in https://github.com/cloudflare/workerd/pull/4840
• Always grab the owned source from a dynamic source by @jasnell in https://github.com/cloudflare/workerd/pull/4844
• Improve tracing for MemoryCache by @danlapid in https://github.com/cloudflare/workerd/pull/4843
• release-python-runtime.yml: Make the commit a fixup commit by @hoodmane in https://github.com/cloudflare/workerd/pull/4842
• Fixup for VFS file clone handling by @jasnell in https://github.com/cloudflare/workerd/pull/4845
• Replace deprecated capnp set/add methods with setPtr/addPtr/addPtrPtr by @jasnell in https://github.com/cloudflare/workerd/pull/4822
• Add getJurisdiction method to DurableObjectId by @joshthoward in https://github.com/cloudflare/workerd/pull/4789

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250820.0...v1.20250821.0

What's Changed

• Store the VFS in the Script/Context embedder data by @jasnell in https://github.com/cloudflare/workerd/pull/4821
• Remove experimental from python_workflows compat flag by @Caio-Nogueira in https://github.com/cloudflare/workerd/pull/4806
• Python: Don't define error handling handlers in workerd when Default class exists by @hoodmane in https://github.com/cloudflare/workerd/pull/4826
• Check for missing function names in getCallSites. by @erikcorry in https://github.com/cloudflare/workerd/pull/4824
• Land a couple of patches from the downstream project by @jasnell in https://github.com/cloudflare/workerd/pull/4827
• fix ubsan impl unequal size error by @mikea in https://github.com/cloudflare/workerd/pull/4820
• EW-9282 EW-9367 Add STW onset event size limit by @fhanau in https://github.com/cloudflare/workerd/pull/4809
• Fixup some crypto dh checks by @jasnell in https://github.com/cloudflare/workerd/pull/4828
• update workerd-cxx by @anonrig in https://github.com/cloudflare/workerd/pull/4829
• Revert "Refactor headers and improve performance (#4494)" by @jasnell in https://github.com/cloudflare/workerd/pull/4830
• Remove the unused JSG_LAZY_JS macros by @jasnell in https://github.com/cloudflare/workerd/pull/4835

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250819.0...v1.20250820.0

What's Changed

• Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/4801
• Fix double setting tag by @danlapid in https://github.com/cloudflare/workerd/pull/4807
• Change StreamWorkerInterface::request to coroutine by @jasnell in https://github.com/cloudflare/workerd/pull/4803
• Python: Tidy up default class handling, NFC by @hoodmane in https://github.com/cloudflare/workerd/pull/4805
• Set the global V8 OOM handler by @erikcorry in https://github.com/cloudflare/workerd/pull/4804
• fix: Other protocols allowed before socket2fetcher by @tewaro in https://github.com/cloudflare/workerd/pull/4814
• fix OutgoingMessage incompatibility with ClientRequest by @anonrig in https://github.com/cloudflare/workerd/pull/4815
• Fix AbortSignal.any serialisation when re-validating Python. by @dom96 in https://github.com/cloudflare/workerd/pull/4813
• [o11y] Drop STW link type for now by @fhanau in https://github.com/cloudflare/workerd/pull/4704
• [o11y] STW tailStreamSession() and hibernation cleanup by @fhanau in https://github.com/cloudflare/workerd/pull/4703
• sqlite: temporarily mark SQLITE_BUSY status as NOSENTRY to reduce logging volume while debugging by @jclee in https://github.com/cloudflare/workerd/pull/4818

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250816.0...v1.20250819.0

What's Changed

• [o11y] Drop overzealous log in STW outcome reporting by @fhanau in https://github.com/cloudflare/workerd/pull/4780
• Moves http.client import to reduce CPU time when importing Py SDK. by @dom96 in https://github.com/cloudflare/workerd/pull/4772
• Add JSG_TS_OVERRIDE for getByName by @joshthoward in https://github.com/cloudflare/workerd/pull/4779
• Cosmetic: Name some function args. by @erikcorry in https://github.com/cloudflare/workerd/pull/4781
• Allow jurisdictions to be null by @joshthoward in https://github.com/cloudflare/workerd/pull/4778
• just update-deps workerd-cxx by @mikea in https://github.com/cloudflare/workerd/pull/4787
• Ensure SQLite KV put/putMultiple behavior matches actor-cache by @jqmmes in https://github.com/cloudflare/workerd/pull/4405
• Update v8 for 14 by @tewaro in https://github.com/cloudflare/workerd/pull/4788
• Strip Authorization header on cross-origin redirects by @npaun in https://github.com/cloudflare/workerd/pull/4775

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250814.0...v1.20250815.0

What's Changed

• Implements dedicated snapshots for Python Workers. by @dom96 in https://github.com/cloudflare/workerd/pull/4699
• Allow jurisdictions to be undefined by @joshthoward in https://github.com/cloudflare/workerd/pull/4763
• Add noop jurisdictions in workerd by @joshthoward in https://github.com/cloudflare/workerd/pull/4745
• experimental: typescript type stripping by @mikea in https://github.com/cloudflare/workerd/pull/4749
• nfc: just run target by @mikea in https://github.com/cloudflare/workerd/pull/4771
• EW-9366 [o11y] Fix STW span event timestamps by @fhanau in https://github.com/cloudflare/workerd/pull/4766
• [build] Clean up more capnp embeds/expand #embed usage by @fhanau in https://github.com/cloudflare/workerd/pull/4737
• Add node:http2 module stubs by @jasnell in https://github.com/cloudflare/workerd/pull/4765
• [o11y] Defer STW outcome event reporting by @fhanau in https://github.com/cloudflare/workerd/pull/4689
• Adds an experimental option to always allow eval by @jasnell in https://github.com/cloudflare/workerd/pull/4773
• Implement no-op emitDestroy method for AsyncResource by @jasnell in https://github.com/cloudflare/workerd/pull/4774

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250813.0...v1.20250814.0

What's Changed

• [build] 08-11-25 Update deps, incl. non-automated lol-html, boringssl, rules_cc, zlib by @fhanau in https://github.com/cloudflare/workerd/pull/4753
• Fix AI Gateway extra headers not working when options are not passed by @G4brym in https://github.com/cloudflare/workerd/pull/4696
• Add system_prompt field to rag ai search by @G4brym in https://github.com/cloudflare/workerd/pull/4714
• feat: add Workflows to ValidationErrorReporter by @LuisDuarte1 in https://github.com/cloudflare/workerd/pull/3509
• Implement node:constants by @jasnell in https://github.com/cloudflare/workerd/pull/4759
• Add node:fs + graceful-fs sample by @jasnell in https://github.com/cloudflare/workerd/pull/4760
• Bump slab from 0.4.10 to 0.4.11 in /samples/hello-wasm by @dependabot[bot] in https://github.com/cloudflare/workerd/pull/4764
• Move cloudflare-internal:workers module to its own impl file and expose ServiceStub by @kentonv in https://github.com/cloudflare/workerd/pull/4762

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250812.0...v1.20250813.0

What's Changed

• Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/4738
• Python durable object test: don't hang on failure by @hoodmane in https://github.com/cloudflare/workerd/pull/4741
• Python: Add snapshotDebug setting by @hoodmane in https://github.com/cloudflare/workerd/pull/4739
• Pyodide 0.28 by @hoodmane in https://github.com/cloudflare/workerd/pull/4612
• Python: Put next Python compat flag name back to 20250116 by @hoodmane in https://github.com/cloudflare/workerd/pull/4742
• Python: Fix top level entropy with Pyodide 0.28 by @hoodmane in https://github.com/cloudflare/workerd/pull/4743
• Simplify http_incoming remote port calculation by @jasnell in https://github.com/cloudflare/workerd/pull/4747
• Implements error types for Python runtime and PyodideEntrypointHelper. by @dom96 in https://github.com/cloudflare/workerd/pull/4746
• Small improvement to the httpServerHandler ergonomics by @jasnell in https://github.com/cloudflare/workerd/pull/4735
• Add factory function for read-only empty directory by @jasnell in https://github.com/cloudflare/workerd/pull/4748
• Refine the cloudflare:node APIs further by @jasnell in https://github.com/cloudflare/workerd/pull/4750

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250810.0...v1.20250812.0

What's Changed

• fix duplex stream destroy being undefined by @anonrig in https://github.com/cloudflare/workerd/pull/4732
• introduce nodejs_compat eol methods by @anonrig in https://github.com/cloudflare/workerd/pull/4706
• Fix circular reference bug in node:streams duplex/writable/readable by @jasnell in https://github.com/cloudflare/workerd/pull/4733

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250809.0...v1.20250810.0

What's Changed

• Add createHttpClient API for Socket objects by @danlapid in https://github.com/cloudflare/workerd/pull/4005
• Python: Fix create_vendor_zip by @hoodmane in https://github.com/cloudflare/workerd/pull/4729
• Gracefully handle errors publishing diagnostics channel events by @jasnell in https://github.com/cloudflare/workerd/pull/4723
• [build] Implement fast C23-based wd_cc_embed macro by @fhanau in https://github.com/cloudflare/workerd/pull/4069
• Propagate parent span id across span open streaming tail event reporting. by @mar-cf in https://github.com/cloudflare/workerd/pull/4726
• JSRPC changes to enable interoperability with pure-JS implementation by @kentonv in https://github.com/cloudflare/workerd/pull/4719
• add socket attribute to IncomingMessage by @anonrig in https://github.com/cloudflare/workerd/pull/4721
• just update-deps workerd-cxx by @mikea in https://github.com/cloudflare/workerd/pull/4730
• do not call destroy.bind() by @anonrig in https://github.com/cloudflare/workerd/pull/4731
• Implement DurableObjectNamespace::getByName by @joshthoward in https://github.com/cloudflare/workerd/pull/4728

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250808.0...v1.20250809.0

What's Changed

• enable isolatedModules flag on tsconfig by @anonrig in https://github.com/cloudflare/workerd/pull/4694
• Python: Make vendor tests keep track of Python version if necessary by @hoodmane in https://github.com/cloudflare/workerd/pull/4697
• Python: Update make_snapshots to use no_global_handlers compat flag by @hoodmane in https://github.com/cloudflare/workerd/pull/4661
• Python ts MAINT: Remove some type assertions by @hoodmane in https://github.com/cloudflare/workerd/pull/4713
• just update workerd-cxx by @mikea in https://github.com/cloudflare/workerd/pull/4716
• Move class definitions of *ActorOutgoingFactory into header file by @joshthoward in https://github.com/cloudflare/workerd/pull/4715
• Revert "Use new js error serialization to preserve error details (#4698) by @jasnell in https://github.com/cloudflare/workerd/pull/4717
• improve cross os justfile prepare by @anonrig in https://github.com/cloudflare/workerd/pull/4718

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250807.0...v1.20250808.0

What's Changed

• Implements script for creating vendored package zip for tests by @dom96 in https://github.com/cloudflare/workerd/pull/4594
• Implement FileHandle readableWebStream() by @jasnell in https://github.com/cloudflare/workerd/pull/4695
• update node.js version to v22.18.0 by @anonrig in https://github.com/cloudflare/workerd/pull/4702
• Add can disown content flag to DynamicWorkerSource by @jasnell in https://github.com/cloudflare/workerd/pull/4700
• Use new js error serialization to preserve error details by @jasnell in https://github.com/cloudflare/workerd/pull/4698

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250806.0...v1.20250807.0

What's Changed

• Implement vfs path limits by @jasnell in https://github.com/cloudflare/workerd/pull/4682
• Python, tests: Minor improvements to vendored_py_wd_test by @hoodmane in https://github.com/cloudflare/workerd/pull/4666
• Ensure that FileHandle's are closed under lock by @jasnell in https://github.com/cloudflare/workerd/pull/4685
• Ensure that VFS directories, files, and symlinks are accounted for by @jasnell in https://github.com/cloudflare/workerd/pull/4687
• Report parent span id in span open streaming tail worker event. by @mar-cf in https://github.com/cloudflare/workerd/pull/4686
• merge tsconfig.json across the project by @anonrig in https://github.com/cloudflare/workerd/pull/4643
• Fill in missing node:fs exports by @jasnell in https://github.com/cloudflare/workerd/pull/4688
• add missing http exports by @anonrig in https://github.com/cloudflare/workerd/pull/4692
• Implement node:fs openAsBlob by @jasnell in https://github.com/cloudflare/workerd/pull/4691
• Resolve more outstanding node:fs todos by @jasnell in https://github.com/cloudflare/workerd/pull/4693

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250805.0...v1.20250806.0

What's Changed

• Validator baseline fixes and addition of vendored test for fastapi. by @dom96 in https://github.com/cloudflare/workerd/pull/4669
• [nfc] just w alias by @mikea in https://github.com/cloudflare/workerd/pull/4604
• Add compat flag for the removal of vendor from Python sys.path by @dom96 in https://github.com/cloudflare/workerd/pull/4613
• update workerd-cxx (kj::Exception support) by @mikea in https://github.com/cloudflare/workerd/pull/4670
• nfc: Test starttls for node socket and cf socket by @tewaro in https://github.com/cloudflare/workerd/pull/4673
• Additional argument type checking improvements in node:fs by @jasnell in https://github.com/cloudflare/workerd/pull/4672
• [o11y] Return STW outcome properly by @fhanau in https://github.com/cloudflare/workerd/pull/4564
• update js dependencies by @anonrig in https://github.com/cloudflare/workerd/pull/4675
• EW-9343: propagate allocation errors to js by @anonrig in https://github.com/cloudflare/workerd/pull/4671
• [o11y] Assorted Streaming Tail Worker bug fixes by @fhanau in https://github.com/cloudflare/workerd/pull/4637
• [rust] testing getCaughtExceptionAsKj by @mikea in https://github.com/cloudflare/workerd/pull/4674
• Remove or consolidate unused functions by @jasnell in https://github.com/cloudflare/workerd/pull/4676
• [o11y] Log stack trace for tail event after close error by @fhanau in https://github.com/cloudflare/workerd/pull/4679
• cleanup MODULE.bazel and update deps by @anonrig in https://github.com/cloudflare/workerd/pull/4680

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250803.0...v1.20250805.0

What's Changed

• Add @cloudflare/Workers-runtime-nodejs to CODEOWNERS by @jasnell in https://github.com/cloudflare/workerd/pull/4659

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20250802.0...v1.20250803.0