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This PR contains the following updates:
25.8.2→25.9.025.8.2→25.9.0Release Notes
nodejs/node (node)
v25.9.0: 2026-04-01, Version 25.9.0 (Current), @aduh95Compare Source
Notable Changes
Test runner module mocking improvements
MockModuleOptions.defaultExportandMockModuleOptions.namedExportshave beenconsolidated into a single option
MockModuleOptions.exportsto align with userexpectations and other test runners.
A
defaultproperty onMockModuleOptions.exportsrepresents the defaultexport, and own enumerable properties are treated as named exports.
An automated migration is available to update user code:
https://github.com/nodejs/userland-migrations/tree/main/recipes/mock-module-exports
Contributed by sangwook in #61727.
Other notable changes
312476cb84] - (SEMVER-MINOR) async_hooks: add using scopes toAsyncLocalStorage(Stephen Belanger) #6167462d2cd473b] - (SEMVER-MINOR) cli: add--max-heap-sizeoption (tannal) #58708d0ebf0e44b] - (SEMVER-MINOR) crypto: addTurboSHAKEandKangarooTwelveWeb Cryptography algorithms (Filip Skokan) #62183f85b9d9fa8] - (SEMVER-MINOR) repl: add customizable error handling (Anna Henningsen) #6218867b854d407] - (SEMVER-MINOR) repl: remove dependency onnode:domain(Matteo Collina) #61227966b700623] - (SEMVER-MINOR) sea: support code cache for ESM entrypoint in SEA (Joyee Cheung) #62158e1f0d2a014] - (SEMVER-MINOR) stream: add stream/iter Implementation (James M Snell) #62066Commits
312476cb84] - (SEMVER-MINOR) async_hooks: add using scopes to AsyncLocalStorage (Stephen Belanger) #61674bfff8cb2ab] - (SEMVER-MINOR) benchmark: add benchmarks for experimental stream/iter (James M Snell) #62066c721d68502] - benchmark: fix destructuring in dgram/single-buffer (Ali Hassan) #62084e2f03c8e92] - buffer: improve performance of multiple Buffer operations (Ali Hassan) #618712fcd07f1ba] - build: support empty libname flags inconfigure.py(Antoine du Hamel) #62477b800c57fce] - build: fix timezone-update path references (Chengzhong Wu) #622807dc5a1e9b4] - build: skip dockit on IBMi (SRAVANI GUNDEPALLI) #62189f0eea0f905] - build: fix --node-builtin-modules-path (Filip Skokan) #6211562d2cd473b] - (SEMVER-MINOR) cli: add --max-heap-size option (tannal) #58708ac4b485698] - crypto: update root certificates to NSS 3.121 (Node.js GitHub Bot) #62485d0ebf0e44b] - (SEMVER-MINOR) crypto: add TurboSHAKE and KangarooTwelve Web Cryptography algorithms (Filip Skokan) #621833009980d9d] - crypto: add crypto::GetSSLCtx API for addon access to OpenSSL contexts (Tim Perry) #62254f5725ca81d] - crypto: reject ML-KEM/ML-DSA PKCS#8 import without seed in SubtleCrypto (Filip Skokan) #62218f69ed4bc3f] - crypto: rename CShakeParams and KmacParams length to outputLength (Filip Skokan) #618754d96e53570] - crypto: refactor WebCrypto AEAD algorithms auth tag handling (Filip Skokan) #6216993d77719e8] - crypto: read algorithm name property only once in normalizeAlgorithm (Filip Skokan) #621703d2e23a981] - deps: update ada to 3.4.4 (Node.js GitHub Bot) #62414176d6d2205] - deps: update timezone to 2026a (Node.js GitHub Bot) #6216495c7fc67ba] - deps: update googletest to2461743(Node.js GitHub Bot) #62484e5e9f2044a] - deps: update simdjson to 4.5.0 (Node.js GitHub Bot) #62382905b94266a] - deps: update ngtcp2 to 1.21.0 (Node.js GitHub Bot) #62051180c150122] - deps: V8: cherry-pickcf1bce4(Richard Lau) #62449bc265aa003] - deps: upgrade npm to 11.12.1 (npm team) #62448f1b28612c4] - deps: V8: cherry-pickb25cd62(Yagiz Nizipli) #62354757719d2af] - deps: disable rust icu compiled_data features (Chengzhong Wu) #622843bdc955b63] - deps: update sqlite to 3.51.3 (Node.js GitHub Bot) #62256a9703d194a] - deps: update googletest to73a63ea(Node.js GitHub Bot) #6192785138935cb] - deps: update merve to 1.2.2 (Node.js GitHub Bot) #62213231521e75e] - diagnostics_channel: add diagnostics channels for web locks (Ilyas Shabi) #621230093863664] - doc: deprecatemodule.register()(DEP0205) (Geoffrey Booth) #623950b96ece6be] - doc: clarify that features cannot be both experimental and deprecated (Antoine du Hamel) #624568d3ea975f5] - doc: fix 'transfered' typo in quic.md (lilianakatrina684-a11y) #6249208ff16e0ba] - doc: move sqlite type conversion section to correct level (René) #6248261cc747dd8] - doc: add Rafael to last security release steward (Rafael Gonzaga) #6242364cfa5a6fa] - doc: use npm-published version of doc-kit (Aviv Keller) #621391020321fb0] - doc: fix overstated Date header requirement in response.sendDate (Kit Dallege) #622069caa7855b2] - doc: fix guaranteed typo (lilianakatrina684-a11y) #62374e254f65306] - doc: enhance clarification about the main field (Mowafak Almahaini) #623029e724b53f8] - doc: remove spawn with shell example from bat/cmd section (Kit Dallege) #622437f37c17516] - doc: minor typo fix (Jeff Matson) #62358eb0ca98f01] - doc: add path to vulnerabilities.json mention (Rafael Gonzaga) #62355198b6e0932] - doc: deprecate CryptoKey use in node:crypto (Filip Skokan) #6232117e5aee6c5] - doc: fix small environment_variables typo (chris) #62279193d629895] - doc: test and test-only targets do not run linter (Xavier Stouder) #621204a1f20ec4a] - doc: clarify fs.ReadStream and fs.WriteStream are not constructable (Kit Dallege) #62208f976c9214d] - doc: clarify that any truthy value ofshellis part of DEP0190 (Antoine du Hamel) #622494d83972681] - doc: remove outdated Chrome 66 and ndb references from debugger (Kit Dallege) #6220271f2eada5b] - doc: add throwIfNoEntry version history to fs.stat (kovan) #62204670c80893b] - doc: add note (and caveat) formock.moduleabout customization hooks (Jacob Smith) #620752ff5cb13f5] - doc,test: clarify --eval syntax for leading '-' scripts (kovan) #622446c6c9004c4] - esm: fix typo in worker loader hook comment (jakecastelli) #624751cdd23c9f3] - esm: fix source phase identity bug in loadCache eviction (Guy Bedford) #624154f4ff15794] - esm: fix path normalization infinalizeResolution(Antoine du Hamel) #62080088167d102] - events: avoid cloning listeners array on every emit (Gürgün Dayıoğlu) #622610250b436ee] - fs: fix cpSync to handle non-ASCII characters (Stefan Stojanovic) #61950b67a8fb171] - inspector: add Target.getTargets and extract TargetManager (Kohei) #62487ffcc5a5722] - lib: make SubtleCrypto.supports enumerable (Filip Skokan) #6230792ef2ad8fa] - lib: prefer primordials in SubtleCrypto (Filip Skokan) #6222640a43ac4d0] - module: fix coverage of mocked CJS modules imported from ESM (Marco) #621333ef0a5b90e] - quic: remove CryptoKey support from session keys option (Filip Skokan) #623353c8dd8eb8e] - repl: use vm DONT_CONTEXTIFY context (Chengzhong Wu) #62371f85b9d9fa8] - (SEMVER-MINOR) repl: add customizable error handling (Anna Henningsen) #62188e4c164e045] - repl: handle exceptions from async context after close (Anna Henningsen) #6216567b854d407] - (SEMVER-MINOR) repl: remove dependency on domain module (Matteo Collina) #61227966b700623] - (SEMVER-MINOR) sea: support code cache for ESM entrypoint in SEA (Joyee Cheung) #62158fe82baf970] - src: improve EC JWK import performance (Filip Skokan) #62396d490b171e0] - src: handle null backing store in ArrayBufferViewContents::Read (Mert Can Altin) #623430e4af848bc] - src: convert context_frame field in AsyncWrap to internal field (Anna Henningsen) #6210302980b8c8f] - src: enable compilation/linking with OpenSSL 4.0 (Filip Skokan) #62410064f7c2fa6] - src: use stack allocation in indexOf latin1 path (Mert Can Altin) #62268ede52bc2dc] - src,sqlite: fix filterFunc dangling reference (Edy Silva) #62281e1f0d2a014] - (SEMVER-MINOR) stream: add stream/iter Implementation (James M Snell) #6206603839fb087] - stream: preserve error over AbortError in pipeline (Marco) #621130000d2f011] - stream: replace bind with arrow function for onwrite callback (Ali Hassan) #620873796a73719] - test: update WPT for WebCryptoAPI to2cb332d(Node.js GitHub Bot) #62483ad8309415b] - test: update WPT for url tofc3e651(Node.js GitHub Bot) #62379bed89b037e] - test: wait for reattach before initial break on restart (Yuya Inoue) #62471c9ffffcc55] - test: disable flaky WPT Blob test on AIX (James M Snell) #62470fd41ef31f6] - (SEMVER-MINOR) test: add tests for experimental stream/iter implementation (James M Snell) #620661b9d8d3eec] - test: avoid flaky run wait in debugger restart test (Yuya Inoue) #62112cb08a29d51] - test: skip test-cluster-dgram-reuse on AIX 7.3 (Stewart X Addison) #62238abea0af8a9] - test: add WebCrypto Promise.prototype.then pollution regression tests (Filip Skokan) #6222647a2132269] - test: update WPT for WebCryptoAPI to6a1c545(Node.js GitHub Bot) #621872c63d3006c] - test_runner: add exports option for module mocks (sangwook) #6172744ac0e1302] - test_runner: make it compatible with fake timers (Matteo Collina) #592721865691275] - test_runner: set non-zero exit code when suite errors occur (Edy Silva) #622820252b2bab8] - tools: bump picomatch from 4.0.3 to 4.0.4 in /tools/eslint (dependabot[bot]) #624393368155267] - tools: bump yaml from 2.8.2 to 2.8.3 in /tools/doc (dependabot[bot]) #624375e47c359f5] - tools: adopt the--check-for-duplicatesNCU flag (Antoine du Hamel) #624784a604e82d0] - tools: bump picomatch in /tools/doc (dependabot[bot]) #62438d1a98b4ddb] - tools: bump flatted from 3.4.1 to 3.4.2 in /tools/eslint (dependabot[bot]) #62375c32daa1ab4] - tools: bump eslint deps (Huáng Jùnliàng) #623567a2fcc6d41] - tools: do not swallow error inlint-nixworkflow (Antoine du Hamel) #62292c41a2871b5] - tools: add eslint-plugin-regexp (Huáng Jùnliàng) #6209356dfeb06df] - tools: fix timeout errors inlint-nixjob (Antoine du Hamel) #6226522fc8078e8] - tools: bump flatted from 3.3.3 to 3.4.1 in /tools/eslint (dependabot[bot]) #62255409b0663bd] - tools: bump undici from 6.23.0 to 6.24.1 in /tools/doc (dependabot[bot]) #6225067c69750f4] - tools: validate all commits that are pushed tomain(Antoine du Hamel) #622467d9db8cd21] - tools: keep GN files when updating Merve (Antoine du Hamel) #621676c8fa42ba2] - typings: rationalise TypedArray types (René) #62174531c64d04e] - url: enable simdutf for ada (Yagiz Nizipli) #614772000caccde] - util: allow color aliases in styleText (sangwook) #621800aed332ab4] - wasm: support js string constant esm import (Guy Bedford) #62198d3fd4a978b] - worker: heap profile optimizations (Ilyas Shabi) #62201e992a34a18] - zlib: fix use-after-free when reset() is called during write (Matteo Collina) #62325Configuration
📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).
🚦 Automerge: Enabled.
♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.
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