2023-10-17, Version 21.0.0 (Current)

Notable Changes:

doc:
  * promote fetch/webstreams from experimental to stable (Steven) https://github.com/nodejs/node/pull/45684
esm:
  * use import attributes instead of import assertions (Antoine du Hamel) https://github.com/nodejs/node/pull/50140
  * --experimental-default-type flag to flip module defaults (Geoffrey Booth) https://github.com/nodejs/node/pull/49869
  * remove `globalPreload` hook (superseded by `initialize`) (Jacob Smith) https://github.com/nodejs/node/pull/49144
fs:
  * add flush option to writeFile() functions (Colin Ihrig) https://github.com/nodejs/node/pull/50009
  * (SEMVER-MAJOR) add globSync implementation (Moshe Atlow) https://github.com/nodejs/node/pull/47653
http:
  * (SEMVER-MAJOR) reduce parts in chunked response when corking (Robert Nagy) https://github.com/nodejs/node/pull/50167
lib:
  * (SEMVER-MINOR) add WebSocket client (Matthew Aitken) https://github.com/nodejs/node/pull/49830
  * (SEMVER-MAJOR) add `navigator.hardwareConcurrency` (Yagiz Nizipli) https://github.com/nodejs/node/pull/47769
stream:
  * optimize Writable (Robert Nagy) https://github.com/nodejs/node/pull/50012
test_runner:
  * (SEMVER-MAJOR) support passing globs (Moshe Atlow) https://github.com/nodejs/node/pull/47653
vm:
  * use default HDO when importModuleDynamically is not set (Joyee Cheung) https://github.com/nodejs/node/pull/49950

Semver-Major Commits:

* (SEMVER-MAJOR) build: drop support for Visual Studio 2019 (Michaël Zasso) https://github.com/nodejs/node/pull/49051
* (SEMVER-MAJOR) build: bump supported macOS and Xcode versions (Michaël Zasso) https://github.com/nodejs/node/pull/49164
* (SEMVER-MAJOR) crypto: do not overwrite \_writableState.defaultEncoding (Tobias Nießen) https://github.com/nodejs/node/pull/49140
* (SEMVER-MAJOR) deps: bump minimum ICU version to 73 (Michaël Zasso) https://github.com/nodejs/node/pull/49639
* (SEMVER-MAJOR) deps: update V8 to 11.8.172.13 (Michaël Zasso) https://github.com/nodejs/node/pull/49639
* (SEMVER-MAJOR) deps: update llhttp to 9.1.2 (Paolo Insogna) https://github.com/nodejs/node/pull/48981
* (SEMVER-MAJOR) events: validate options of `on` and `once` (Deokjin Kim) https://github.com/nodejs/node/pull/46018
* (SEMVER-MAJOR) fs: adjust `position` validation in reading methods (Livia Medeiros) https://github.com/nodejs/node/pull/42835
* (SEMVER-MAJOR) fs: add globSync implementation (Moshe Atlow) https://github.com/nodejs/node/pull/47653
* (SEMVER-MAJOR) http: reduce parts in chunked response when corking (Robert Nagy) https://github.com/nodejs/node/pull/50167
* (SEMVER-MAJOR) lib: mark URL/URLSearchParams as uncloneable and untransferable (Chengzhong Wu) https://github.com/nodejs/node/pull/47497
* (SEMVER-MAJOR) lib: remove aix directory case for package reader (Yagiz Nizipli) https://github.com/nodejs/node/pull/48605
* (SEMVER-MAJOR) lib: add `navigator.hardwareConcurrency` (Yagiz Nizipli) https://github.com/nodejs/node/pull/47769
* (SEMVER-MAJOR) lib: runtime deprecate punycode (Yagiz Nizipli) https://github.com/nodejs/node/pull/47202
* (SEMVER-MAJOR) module: harmonize error code between ESM and CJS (Antoine du Hamel) https://github.com/nodejs/node/pull/48606
* (SEMVER-MAJOR) net: do not treat `server.maxConnections=0` as `Infinity` (ignoramous) https://github.com/nodejs/node/pull/48276
* (SEMVER-MAJOR) net: only defer \_final call when connecting (Jason Zhang) https://github.com/nodejs/node/pull/47385
* (SEMVER-MAJOR) node-api: rename internal NAPI\_VERSION definition (Chengzhong Wu) https://github.com/nodejs/node/pull/48501
* (SEMVER-MAJOR) src: update NODE\_MODULE\_VERSION to 120 (Michaël Zasso) https://github.com/nodejs/node/pull/49639
* (SEMVER-MAJOR) src: throw DOMException on cloning non-serializable objects (Chengzhong Wu) https://github.com/nodejs/node/pull/47839
* (SEMVER-MAJOR) src: throw DataCloneError on transfering untransferable objects (Chengzhong Wu) https://github.com/nodejs/node/pull/47604
* (SEMVER-MAJOR) stream: use private properties for strategies (Yagiz Nizipli) https://github.com/nodejs/node/pull/47218
* (SEMVER-MAJOR) stream: use private properties for encoding (Yagiz Nizipli) https://github.com/nodejs/node/pull/47218
* (SEMVER-MAJOR) stream: use private properties for compression (Yagiz Nizipli) https://github.com/nodejs/node/pull/47218
* (SEMVER-MAJOR) test\_runner: disallow array in `run` options (Raz Luvaton) https://github.com/nodejs/node/pull/49935
* (SEMVER-MAJOR) test\_runner: support passing globs (Moshe Atlow) https://github.com/nodejs/node/pull/47653
* (SEMVER-MAJOR) tls: use `validateNumber` for `options.minDHSize` (Deokjin Kim) https://github.com/nodejs/node/pull/49973
* (SEMVER-MAJOR) tls: use validateFunction for `options.checkServerIdentity` (Deokjin Kim) https://github.com/nodejs/node/pull/49896
* (SEMVER-MAJOR) util: runtime deprecate `promisify`-ing a function returning a `Promise` (Antoine du Hamel) https://github.com/nodejs/node/pull/49609
* (SEMVER-MAJOR) vm: freeze `dependencySpecifiers` array (Antoine du Hamel) https://github.com/nodejs/node/pull/49720

PR-URL: https://github.com/nodejs/node/pull/49870
Co-authored-by: Michaël Zasso <targos@protonmail.com>

doc/api/errors.md

@@ -1791,7 +1791,7 @@ An import attribute is not supported by this version of Node.js.
 ### `ERR_IMPORT_ATTRIBUTE_UNSUPPORTED`
 
 <!-- YAML
-added: REPLACEME
+added: v21.0.0
 -->
 
 An import attribute is not supported by this version of Node.js.
@@ -3299,9 +3299,9 @@ An invalid or unknown file encoding was passed.
 ### `ERR_INVALID_TRANSFER_OBJECT`
 
 <!-- YAML
-removed: REPLACEME
+removed: v21.0.0
 changes:
-  - version: REPLACEME
+  - version: v21.0.0
     pr-url: https://github.com/nodejs/node/pull/47839
     description: A `DOMException` is thrown instead.
 -->
@@ -3326,9 +3326,9 @@ transferable objects also exist now.
 
 <!-- YAML
 added: v15.0.0
-removed: REPLACEME
+removed: v21.0.0
 changes:
-  - version: REPLACEME
+  - version: v21.0.0
     pr-url: https://github.com/nodejs/node/pull/47839
     description: A `DOMException` is thrown instead.
 -->