Node.js — Node.js v24.11.1 (LTS)
Node.js v24.11.1 "Krypton" (LTS) — Release Notes
Date: 2025-11-11
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🚀 Notable Change
- Buffer Handling Fix
- The long-standing issue where `Buffer.allocUnsafe` was incorrectly zero-filling buffers is now resolved.
- As per the Buffer.allocUnsafe documentation, it correctly returns uninitialized memory.
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📜 Commit Highlights
Benchmarks
- [[0a15ccf3f4]](https://github.com/nodejs/node/commit/0a15ccf3f4) — Improve `cpu.sh` for safety/usability (Nam Yooseong) [#60162]
- [[a1c7d1dac9]](https://github.com/nodejs/node/commit/a1c7d1dac9) — Benchmark for leaf source text modules (Joyee Cheung) [#60205]
- [[99e2acf46b]](https://github.com/nodejs/node/commit/99e2acf46b) — Add `vm.SourceTextModule` benchmark (Joyee Cheung) [#59396]
- [[c01c72b407]](https://github.com/nodejs/node/commit/c01c72b407) — Use non-deprecated `WriteUtf8V2` (Michaël Zasso) [#60173]
Build & Configuration
- [[a42dbd138e]](https://github.com/nodejs/node/commit/a42dbd138e) — IBM i uses AIX visibility settings (SRAVANI GUNDEPALLI) [#60360]
- [[5673a54a5d]](https://github.com/nodejs/node/commit/5673a54a5d) — Use `call` command for Python `configure` (Jacob Nichols) [#60098]
- [[c67cb727cb]](https://github.com/nodejs/node/commit/c67cb727cb) — Build V8 with hidden visibility flags (Joyee Cheung) [#56290]
- Dependency Updates: Corepack, simdjson, GoogleTest, inspector_protocol, npm
Crypto & Security
- [[95330b036f]](https://github.com/nodejs/node/commit/95330b036f) — Update root certificates to NSS 3.116 (Node.js Bot) [#59956]
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📖 Documentation Updates
- Added codemod references to `deprecations.md`
- Documented wildcard support in `tools/test.py`
- Added missing DNS CAA record type
- Updated decorated API docs and wildcard descriptions
- Clarified top-level exports in `worker_threads`
- Marked async customization hooks as experimental
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🛠 HTTP & Networking
- Lazy allocation for cookies array (Robert Nagy)
- Fixed HTTP client leak on double responses (theanarkh)
- HTTP/2: renamed variables, fixed ping buffer crash
- Inspector: network payload size limits, WebSocket handshake response support
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🧩 Core Library Fixes
- Typo corrections in `createBlobReaderStream` and `QuicSessionStats`
- Fixed `_errnoException` constructor in stack traces
- Removed redundant `destroyHook` checks
- Meta changes: collaborator status updates, deprecation loop fixes
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⚙️ Module Loader & Build System
- Refactored async loader hook customization
- Handled null source from async hooks in sync hooks
- Fixed WiX warnings in MSI builds
- Improved snapshot serialize callback timing
- Added `COUNT_GENERIC_USAGE` utility for tests
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🔒 Locking & Concurrency
- Initial enablement of IsolateGroups
- Updated locks to use DictionaryTemplate
- Used `Utf8Value` and `TwoByteValue` instead of V8 helpers
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🧪 Test Stability Improvements
- Increased debugger `waitFor` timeout on macOS
- Fixed flaky tests
- Split and reorganized SEA test suites
- Conditional skips for IBM i and macOS 15.7+
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🔑 Crypto Test Updates
- Conditional SHA3 skip for BoringSSL
- Explicit `sha3` algorithm unsupported notice
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🧰 Tooling & Typings
- Updated gyp-next, Inspector Protocol PR title limit
- Added missing properties in Worker and HTTPParser typings
- Removed undefined property in ConfigBinding
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🖥 VM & Windows Build
- `vm.Module.evaluate()` conditionally synchronous
- Upgraded Visual Studio workload to 2022
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✅ Next Release: Node.js v25.2.0 (Current)
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