Node.js 25.9.0 (Current)

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 toAsyncLocalStorage (Stephen Belanger) #61674 - [ 62d2cd473b ] - (SEMVER-MINOR) cli: add--max-heap-size option (tannal) #58708 - [ d0ebf0e44b ] - (SEMVER-MINOR) crypto: addTurboSHAKE andKangarooTwelve Web Cryptography algorithms (Filip Skokan) #62183 - [ f85b9d9fa8 ] - (SEMVER-MINOR) repl: add customizable error handling (Anna Henningsen) #62188 - [ 67b854d407 ] - (SEMVER-MINOR) repl: remove dependency onnode: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 inconfigure.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: deprecatemodule.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 ofshell 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) formock.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 infinalizeResolution (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 inlint-nix workflow (Antoine du Hamel) #62292 - [ c41a2871b5 ] - tools: add eslint-plugin-regexp (Huáng Jùnliàng) #62093 - [ 56dfeb06df ] - tools: fix timeout errors inlint-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 tomain (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 - 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