Node.js 25.9.0 (Current)

Antoine du Hamel

2026-04-01, Version 25.9.0 (Current), @aduh95

Notable Changes

Test runner module mocking improvements

MockModuleOptions.defaultExport and MockModuleOptions.namedExports have been consolidated into a single option MockModuleOptions.exports to align with user expectations and other test runners.

A default property on MockModuleOptions.exports represents the default export, 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

npx codemod @nodejs/mock-module-exports

Contributed by sangwook in #61727.

Other notable changes

[312476cb84] - (SEMVER-MINOR) async_hooks: add using scopes to AsyncLocalStorage (Stephen Belanger) #61674
[62d2cd473b] - (SEMVER-MINOR) cli: add --max-heap-size option (tannal) #58708
[d0ebf0e44b] - (SEMVER-MINOR) crypto: add TurboSHAKE and KangarooTwelve Web Cryptography algorithms (Filip Skokan) #62183
[f85b9d9fa8] - (SEMVER-MINOR) repl: add customizable error handling (Anna Henningsen) #62188
[67b854d407] - (SEMVER-MINOR) repl: remove dependency on node:domain (Matteo Collina) #61227
[966b700623] - (SEMVER-MINOR) sea: support code cache for ESM entrypoint in SEA (Joyee Cheung) #62158
[e1f0d2a014] - (SEMVER-MINOR) stream: add stream/iter Implementation (James M Snell) #62066

Commits

[312476cb84] - (SEMVER-MINOR) async_hooks: add using scopes to AsyncLocalStorage (Stephen Belanger) #61674
[bfff8cb2ab] - (SEMVER-MINOR) benchmark: add benchmarks for experimental stream/iter (James M Snell) #62066
[c721d68502] - benchmark: fix destructuring in dgram/single-buffer (Ali Hassan) #62084
[e2f03c8e92] - buffer: improve performance of multiple Buffer operations (Ali Hassan) #61871
[2fcd07f1ba] - build: support empty libname flags in configure.py (Antoine du Hamel) #62477
[b800c57fce] - build: fix timezone-update path references (Chengzhong Wu) #62280
[7dc5a1e9b4] - build: skip dockit on IBMi (SRAVANI GUNDEPALLI) #62189
[f0eea0f905] - build: fix --node-builtin-modules-path (Filip Skokan) #62115
[62d2cd473b] - (SEMVER-MINOR) cli: add --max-heap-size option (tannal) #58708
[ac4b485698] - crypto: update root certificates to NSS 3.121 (Node.js GitHub Bot) #62485
[d0ebf0e44b] - (SEMVER-MINOR) crypto: add TurboSHAKE and KangarooTwelve Web Cryptography algorithms (Filip Skokan) #62183
[3009980d9d] - crypto: add crypto::GetSSLCtx API for addon access to OpenSSL contexts (Tim Perry) #62254
[f5725ca81d] - crypto: reject ML-KEM/ML-DSA PKCS#8 import without seed in SubtleCrypto (Filip Skokan) #62218
[f69ed4bc3f] - crypto: rename CShakeParams and KmacParams length to outputLength (Filip Skokan) #61875
[4d96e53570] - crypto: refactor WebCrypto AEAD algorithms auth tag handling (Filip Skokan) #62169
[93d77719e8] - crypto: read algorithm name property only once in normalizeAlgorithm (Filip Skokan) #62170
[3d2e23a981] - deps: update ada to 3.4.4 (Node.js GitHub Bot) #62414
[176d6d2205] - deps: update timezone to 2026a (Node.js GitHub Bot) #62164
[95c7fc67ba] - deps: update googletest to 2461743991f9aa53e9a3625eafcbacd81a3c74cd (Node.js GitHub Bot) #62484
[e5e9f2044a] - deps: update simdjson to 4.5.0 (Node.js GitHub Bot) #62382
[905b94266a] - deps: update ngtcp2 to 1.21.0 (Node.js GitHub Bot) #62051
[180c150122] - deps: V8: cherry-pick cf1bce40a5ef (Richard Lau) #62449
[bc265aa003] - deps: upgrade npm to 11.12.1 (npm team) #62448
[f1b28612c4] - deps: V8: cherry-pick b25cd62c7ba2 (Yagiz Nizipli) #62354
[757719d2af] - deps: disable rust icu compiled_data features (Chengzhong Wu) #62284
[3bdc955b63] - deps: update sqlite to 3.51.3 (Node.js GitHub Bot) #62256
[a9703d194a] - deps: update googletest to 73a63ea05dc8ca29ec1d2c1d66481dd0de1950f1 (Node.js GitHub Bot) #61927
[85138935cb] - deps: update merve to 1.2.2 (Node.js GitHub Bot) #62213
[231521e75e] - diagnostics_channel: add diagnostics channels for web locks (Ilyas Shabi) #62123
[0093863664] - doc: deprecate module.register() (DEP0205) (Geoffrey Booth) #62395
[0b96ece6be] - doc: clarify that features cannot be both experimental and deprecated (Antoine du Hamel) #62456
[8d3ea975f5] - doc: fix 'transfered' typo in quic.md (lilianakatrina684-a11y) #62492
[08ff16e0ba] - doc: move sqlite type conversion section to correct level (René) #62482
[61cc747dd8] - doc: add Rafael to last security release steward (Rafael Gonzaga) #62423
[64cfa5a6fa] - doc: use npm-published version of doc-kit (Aviv Keller) #62139
[1020321fb0] - doc: fix overstated Date header requirement in response.sendDate (Kit Dallege) #62206
[9caa7855b2] - doc: fix guaranteed typo (lilianakatrina684-a11y) #62374
[e254f65306] - doc: enhance clarification about the main field (Mowafak Almahaini) #62302
[9e724b53f8] - doc: remove spawn with shell example from bat/cmd section (Kit Dallege) #62243
[7f37c17516] - doc: minor typo fix (Jeff Matson) #62358
[eb0ca98f01] - doc: add path to vulnerabilities.json mention (Rafael Gonzaga) #62355
[198b6e0932] - doc: deprecate CryptoKey use in node:crypto (Filip Skokan) #62321
[17e5aee6c5] - doc: fix small environment_variables typo (chris) #62279
[193d629895] - doc: test and test-only targets do not run linter (Xavier Stouder) #62120
[4a1f20ec4a] - doc: clarify fs.ReadStream and fs.WriteStream are not constructable (Kit Dallege) #62208
[f976c9214d] - doc: clarify that any truthy value of shell is part of DEP0190 (Antoine du Hamel) #62249
[4d83972681] - doc: remove outdated Chrome 66 and ndb references from debugger (Kit Dallege) #62202
[71f2eada5b] - doc: add throwIfNoEntry version history to fs.stat (kovan) #62204
[670c80893b] - doc: add note (and caveat) for mock.module about customization hooks (Jacob Smith) #62075
[2ff5cb13f5] - doc,test: clarify --eval syntax for leading '-' scripts (kovan) #62244
[6c6c9004c4] - esm: fix typo in worker loader hook comment (jakecastelli) #62475
[1cdd23c9f3] - esm: fix source phase identity bug in loadCache eviction (Guy Bedford) #62415
[4f4ff15794] - esm: fix path normalization in finalizeResolution (Antoine du Hamel) #62080
[088167d102] - events: avoid cloning listeners array on every emit (Gürgün Dayıoğlu) #62261
[0250b436ee] - fs: fix cpSync to handle non-ASCII characters (Stefan Stojanovic) #61950
[b67a8fb171] - inspector: add Target.getTargets and extract TargetManager (Kohei) #62487
[ffcc5a5722] - lib: make SubtleCrypto.supports enumerable (Filip Skokan) #62307
[92ef2ad8fa] - lib: prefer primordials in SubtleCrypto (Filip Skokan) #62226
[40a43ac4d0] - module: fix coverage of mocked CJS modules imported from ESM (Marco) #62133
[3ef0a5b90e] - quic: remove CryptoKey support from session keys option (Filip Skokan) #62335
[3c8dd8eb8e] - repl: use vm DONT_CONTEXTIFY context (Chengzhong Wu) #62371
[f85b9d9fa8] - (SEMVER-MINOR) repl: add customizable error handling (Anna Henningsen) #62188
[e4c164e045] - repl: handle exceptions from async context after close (Anna Henningsen) #62165
[67b854d407] - (SEMVER-MINOR) repl: remove dependency on domain module (Matteo Collina) #61227
[966b700623] - (SEMVER-MINOR) sea: support code cache for ESM entrypoint in SEA (Joyee Cheung) #62158
[fe82baf970] - src: improve EC JWK import performance (Filip Skokan) #62396
[d490b171e0] - src: handle null backing store in ArrayBufferViewContents::Read (Mert Can Altin) #62343
[0e4af848bc] - src: convert context_frame field in AsyncWrap to internal field (Anna Henningsen) #62103
[02980b8c8f] - src: enable compilation/linking with OpenSSL 4.0 (Filip Skokan) #62410
[064f7c2fa6] - src: use stack allocation in indexOf latin1 path (Mert Can Altin) #62268
[ede52bc2dc] - src,sqlite: fix filterFunc dangling reference (Edy Silva) #62281
[e1f0d2a014] - (SEMVER-MINOR) stream: add stream/iter Implementation (James M Snell) #62066
[03839fb087] - stream: preserve error over AbortError in pipeline (Marco) #62113
[0000d2f011] - stream: replace bind with arrow function for onwrite callback (Ali Hassan) #62087
[3796a73719] - test: update WPT for WebCryptoAPI to 2cb332d710 (Node.js GitHub Bot) #62483
[ad8309415b] - test: update WPT for url to fc3e651593 (Node.js GitHub Bot) #62379
[bed89b037e] - test: wait for reattach before initial break on restart (Yuya Inoue) #62471
[c9ffffcc55] - test: disable flaky WPT Blob test on AIX (James M Snell) #62470
[fd41ef31f6] - (SEMVER-MINOR) test: add tests for experimental stream/iter implementation (James M Snell) #62066
[1b9d8d3eec] - test: avoid flaky run wait in debugger restart test (Yuya Inoue) #62112
[cb08a29d51] - test: skip test-cluster-dgram-reuse on AIX 7.3 (Stewart X Addison) #62238
[abea0af8a9] - test: add WebCrypto Promise.prototype.then pollution regression tests (Filip Skokan) #62226
[47a2132269] - test: update WPT for WebCryptoAPI to 6a1c545d77 (Node.js GitHub Bot) #62187
[2c63d3006c] - test_runner: add exports option for module mocks (sangwook) #61727
[44ac0e1302] - test_runner: make it compatible with fake timers (Matteo Collina) #59272
[1865691275] - test_runner: set non-zero exit code when suite errors occur (Edy Silva) #62282
[0252b2bab8] - tools: bump picomatch from 4.0.3 to 4.0.4 in /tools/eslint (dependabot[bot]) #62439
[3368155267] - tools: bump yaml from 2.8.2 to 2.8.3 in /tools/doc (dependabot[bot]) #62437
[5e47c359f5] - tools: adopt the --check-for-duplicates NCU flag (Antoine du Hamel) #62478
[4a604e82d0] - tools: bump picomatch in /tools/doc (dependabot[bot]) #62438
[d1a98b4ddb] - tools: bump flatted from 3.4.1 to 3.4.2 in /tools/eslint (dependabot[bot]) #62375
[c32daa1ab4] - tools: bump eslint deps (Huáng Jùnliàng) #62356
[7a2fcc6d41] - tools: do not swallow error in lint-nix workflow (Antoine du Hamel) #62292
[c41a2871b5] - tools: add eslint-plugin-regexp (Huáng Jùnliàng) #62093
[56dfeb06df] - tools: fix timeout errors in lint-nix job (Antoine du Hamel) #62265
[22fc8078e8] - tools: bump flatted from 3.3.3 to 3.4.1 in /tools/eslint (dependabot[bot]) #62255
[409b0663bd] - tools: bump undici from 6.23.0 to 6.24.1 in /tools/doc (dependabot[bot]) #62250
[67c69750f4] - tools: validate all commits that are pushed to main (Antoine du Hamel) #62246
[7d9db8cd21] - tools: keep GN files when updating Merve (Antoine du Hamel) #62167
[6c8fa42ba2] - typings: rationalise TypedArray types (René) #62174
[531c64d04e] - url: enable simdutf for ada (Yagiz Nizipli) #61477
[2000caccde] - util: allow color aliases in styleText (sangwook) #62180
[0aed332ab4] - wasm: support js string constant esm import (Guy Bedford) #62198
[d3fd4a978b] - worker: heap profile optimizations (Ilyas Shabi) #62201
[e992a34a18] - zlib: fix use-after-free when reset() is called during write (Matteo Collina) #62325

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Node.js 25.8.2 (Current)