2023-11-22, Version 20.10.0 'Iron' (LTS)

Notable changes:

deps:
  * (SEMVER-MINOR) update uvwasi to 0.0.19 (Node.js GitHub Bot) nodejs#49908
doc:
  * add H4ad to collaborators (Vinícius Lourenço) nodejs#50217
esm:
  * (SEMVER-MINOR) detect ESM syntax in ambiguous JavaScript (Geoffrey Booth) nodejs#50096
  * use import attributes instead of import assertions (Antoine du Hamel) nodejs#50140
  * --experimental-default-type flag to flip module defaults (Geoffrey Booth) nodejs#49869
fs:
  * (SEMVER-MINOR) add flush option to appendFile() functions (Colin Ihrig) nodejs#50095
  * add flush option to writeFile() functions (Colin Ihrig) nodejs#50009
lib:
  * (SEMVER-MINOR) add WebSocket client (Matthew Aitken) nodejs#49830
stream:
  * (SEMVER-MINOR) allow pass stream class to `stream.compose` (Alex Yang) nodejs#50187
  * call helper function from push and unshift (Raz Luvaton) nodejs#50173
  * optimize Writable (Robert Nagy) nodejs#50012
test_runner, cli:
  * (SEMVER-MINOR) add --test-concurrency flag (Colin Ihrig) nodejs#49996
vm:
  * (SEMVER-MINOR) use import attributes instead of import assertions (Antoine du Hamel) nodejs#50141
  * use default HDO when importModuleDynamically is not set (Joyee Cheung) nodejs#49950
wasi:

PR-URL: nodejs#50682

CHANGELOG.md

@@ -41,7 +41,8 @@ release.
 <a href="doc/changelogs/CHANGELOG_V21.md#21.0.0">21.0.0</a><br/>
   </td>
   <td valign="top">
-<b><a href="doc/changelogs/CHANGELOG_V20.md#20.9.0">20.9.0</a></b><br/>
+<b><a href="doc/changelogs/CHANGELOG_V20.md#20.10.0">20.10.0</a></b><br/>
+<a href="doc/changelogs/CHANGELOG_V20.md#20.9.0">20.9.0</a><br/>
 <a href="doc/changelogs/CHANGELOG_V20.md#20.8.1">20.8.1</a><br/>
 <a href="doc/changelogs/CHANGELOG_V20.md#20.8.0">20.8.0</a><br/>
 <a href="doc/changelogs/CHANGELOG_V20.md#20.7.0">20.7.0</a><br/>

doc/api/cli.md

@@ -646,6 +646,7 @@ and `"` are usable.
 <!-- YAML
 added:
   - v21.0.0
+  - v20.10.0
 -->
 
 > Stability: 1.0 - Early development
@@ -676,6 +677,7 @@ JavaScript.
 <!-- YAML
 added:
   - v21.1.0
+  - v20.10.0
 -->
 
 > Stability: 1.0 - Early development
@@ -851,7 +853,9 @@ Enable experimental WebAssembly module support.
 ### `--experimental-websocket`
 
 <!-- YAML
-added: v21.0.0
+added:
+  - v21.0.0
+  - v20.10.0
 -->
 
 Enable experimental [`WebSocket`][] support.
@@ -1746,7 +1750,9 @@ for more details.
 ### `--test-concurrency`
 
 <!-- YAML
-added: v21.0.0
+added:
+  - v21.0.0
+  - v20.10.0
 -->
 
 The maximum number of test files that the test runner CLI will execute

doc/api/errors.md

@@ -1777,7 +1777,9 @@ An import attribute is missing, preventing the specified module to be imported.
 ### `ERR_IMPORT_ATTRIBUTE_UNSUPPORTED`
 
 <!-- YAML
-added: v21.0.0
+added:
+  - v21.0.0
+  - v20.10.0
 -->
 
 An import attribute is not supported by this version of Node.js.

doc/api/esm.md

@@ -7,7 +7,9 @@
 <!-- YAML
 added: v8.5.0
 changes:
-  - version: v21.0.0
+  - version:
+    - v21.0.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50140
     description: Add experimental support for import attributes.
   - version: v20.0.0
@@ -257,7 +259,9 @@ added:
   - v17.1.0
   - v16.14.0
 changes:
-  - version: v21.0.0
+  - version:
+    - v21.0.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50140
     description: Switch from Import Assertions to Import Attributes.
 -->

doc/api/fs.md

@@ -180,7 +180,9 @@ longer be used.
 <!-- YAML
 added: v10.0.0
 changes:
-  - version: v21.1.0
+  - version:
+    - v21.1.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50095
     description: The `flush` option is now supported.
   - version:
@@ -324,7 +326,9 @@ fd.createReadStream({ start: 90, end: 99 });
 <!-- YAML
 added: v16.11.0
 changes:
-  - version: v21.0.0
+  - version:
+    - v21.0.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50093
     description: The `flush` option is now supported.
 -->
@@ -902,7 +906,9 @@ the error raised if the file is not accessible.
 <!-- YAML
 added: v10.0.0
 changes:
-  - version: v21.1.0
+  - version:
+    - v21.1.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50095
     description: The `flush` option is now supported.
 -->
@@ -1761,7 +1767,9 @@ All the [caveats][] for `fs.watch()` also apply to `fsPromises.watch()`.
 <!-- YAML
 added: v10.0.0
 changes:
-  - version: v21.0.0
+  - version:
+    - v21.0.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50009
     description: The `flush` option is now supported.
   - version:
@@ -2063,7 +2071,9 @@ the user from reading or writing to it.
 <!-- YAML
 added: v0.6.7
 changes:
-  - version: v21.1.0
+  - version:
+    - v21.1.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50095
     description: The `flush` option is now supported.
   - version: v18.0.0
@@ -2562,7 +2572,9 @@ If `options` is a string, then it specifies the encoding.
 <!-- YAML
 added: v0.1.31
 changes:
-  - version: v21.0.0
+  - version:
+    - v21.0.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50093
     description: The `flush` option is now supported.
   - version: v16.10.0
@@ -4916,7 +4928,9 @@ details.
 <!-- YAML
 added: v0.1.29
 changes:
-  - version: v21.0.0
+  - version:
+    - v21.0.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50009
     description: The `flush` option is now supported.
   - version: v19.0.0
@@ -5158,7 +5172,9 @@ try {
 <!-- YAML
 added: v0.6.7
 changes:
-  - version: v21.1.0
+  - version:
+    - v21.1.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50095
     description: The `flush` option is now supported.
   - version: v7.0.0
@@ -6217,7 +6233,9 @@ this API: [`fs.utimes()`][].
 <!-- YAML
 added: v0.1.29
 changes:
-  - version: v21.0.0
+  - version:
+    - v21.0.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50009
     description: The `flush` option is now supported.
   - version: v19.0.0

doc/api/globals.md

@@ -1094,7 +1094,9 @@ The object that acts as the namespace for all W3C
 ## `WebSocket`
 
 <!-- YAML
-added: v21.0.0
+added:
+  - v21.0.0
+  - v20.10.0
 -->
 
 > Stability: 1 - Experimental.

doc/api/module.md

@@ -458,7 +458,9 @@ register('./path-to-my-hooks.js', {
 
 <!-- YAML
 changes:
-  - version: v21.0.0
+  - version:
+    - v21.0.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50140
     description: The property `context.importAssertions` is replaced with
                  `context.importAttributes`. Using the old name is still

doc/api/n-api.md

@@ -5452,7 +5452,9 @@ required in order to enable correct disposal of the reference.
 #### `node_api_post_finalizer`
 
 <!-- YAML
-added: v21.0.0
+added:
+  - v21.0.0
+  - v20.10.0
 -->
 
 > Stability: 1 - Experimental

doc/api/stream.md

@@ -2823,7 +2823,9 @@ const server = http.createServer((req, res) => {
 <!-- YAML
 added: v16.9.0
 changes:
-  - version: v21.1.0
+  - version:
+    - v21.1.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50187
     description: Added support for stream class.
   - version:

doc/api/vm.md

@@ -619,7 +619,9 @@ The identifier of the current module, as set in the constructor.
 
 <!-- YAML
 changes:
-  - version: v21.1.0
+  - version:
+    - v21.1.0
+    - v20.10.0
     pr-url: https://github.com/nodejs/node/pull/50141
     description: The option `extra.assert` is renamed to `extra.attributes`. The
                  former name is still provided for backward compatibility.