2026-10-14, Version 26.12.0 (Current)

Notable changes:

doc,lib,src:
  * (SEMVER-MINOR) throw on missing WebAssembly or RX support (Paolo Insogna) #66533
http:
  * (SEMVER-MINOR) add websocketMask() and websocketUnmask() (James M Snell) #66335

PR-URL: #66684
Signed-off-by: Richard Lau <richard.lau@ibm.com>

Author: nodejs-github-bot

CHANGELOG.md

@@ -41,7 +41,8 @@ release.
 </tr>
 <tr>
   <td valign="top">
-<b><a href="doc/changelogs/CHANGELOG_V26.md#26.11.1">26.11.1</a></b><br/>
+<b><a href="doc/changelogs/CHANGELOG_V26.md#26.12.0">26.12.0</a></b><br/>
+<a href="doc/changelogs/CHANGELOG_V26.md#26.11.1">26.11.1</a><br/>
 <a href="doc/changelogs/CHANGELOG_V26.md#26.11.0">26.11.0</a><br/>
 <a href="doc/changelogs/CHANGELOG_V26.md#26.10.0">26.10.0</a><br/>
 <a href="doc/changelogs/CHANGELOG_V26.md#26.9.0">26.9.0</a><br/>

doc/api/cli.md

@@ -808,7 +808,7 @@ added:
  - v23.10.0
  - v22.16.0
 changes:
-  - version: REPLACEME
+  - version: v26.12.0
     pr-url: https://github.com/nodejs/node/pull/66431
     description: This flag was renamed from `--experimental-config-file` to
                  `--config-file` and is now stable. `--experimental-config-file`

doc/api/errors.md

@@ -2977,7 +2977,7 @@ was already in progress to load it asynchronously.
 ### `ERR_RX_MEMORY_NOT_SUPPORTED`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
 -->
 
 A feature requiring runtime allocation of executable memory was used in an

doc/api/http.md

@@ -4647,7 +4647,7 @@ syntax.
 ## `http.websocketMask(source, mask, output, offset, length)`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
 -->
 
 * `source` {Buffer|TypedArray|DataView} The data to mask.
@@ -4715,7 +4715,7 @@ console.log(received.toString());
 ## `http.websocketUnmask(buffer, mask)`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
 -->
 
 * `buffer` {Buffer|TypedArray|DataView} The data to unmask, in place.

doc/api/process.md

@@ -2063,7 +2063,7 @@ Since it's not possible to build Node.js without libuv, this value is always `tr
 <!-- YAML
 added: v22.5.0
 changes:
-  - version: REPLACEME
+  - version: v26.12.0
     pr-url: https://github.com/nodejs/node/pull/66436
     description: Marked as release candidate.
 -->
@@ -2176,7 +2176,7 @@ as it is not guaranteed that the callback will be called under all circumstances
 <!-- YAML
 added: v22.5.0
 changes:
-  - version: REPLACEME
+  - version: v26.12.0
     pr-url: https://github.com/nodejs/node/pull/66436
     description: Marked as release candidate.
 -->
@@ -2201,7 +2201,7 @@ this means that there is a possibility that the callback will not be called unde
 <!-- YAML
 added: v22.5.0
 changes:
-  - version: REPLACEME
+  - version: v26.12.0
     pr-url: https://github.com/nodejs/node/pull/66436
     description: Marked as release candidate.
 -->
@@ -3153,7 +3153,7 @@ for the current process. Additional documentation is available in the
 <!-- YAML
 added: v20.0.0
 changes:
-  - version: REPLACEME
+  - version: v26.12.0
     pr-url: https://github.com/nodejs/node/pull/65492
     description: The `reference` argument can be a `URL` or a `Uint8Array`.
 -->
@@ -3206,7 +3206,7 @@ added:
  - v26.3.0
  - v24.20.0
 changes:
-  - version: REPLACEME
+  - version: v26.12.0
     pr-url: https://github.com/nodejs/node/pull/65492
     description: The `reference` argument can be a `URL` or a `Uint8Array`.
 -->

doc/api/stream_iter.md

@@ -1108,7 +1108,7 @@ Synchronous version of [`bytes()`][].
 ### `dump(source[, options])`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
 -->
 
 * `source` {AsyncIterable|Iterable} whose chunks must be {Uint8Array\[]}
@@ -1168,7 +1168,7 @@ run().catch(console.error);
 ### `dumpSync(source[, options])`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
 -->
 
 * `source` {Iterable} whose chunks must be {Uint8Array\[]}

doc/api/test.md

@@ -4364,7 +4364,7 @@ test('test', (t) => {
 #### `context.assert.callCount(fn, times[, message])`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
 -->
 
 * `fn` {Function} A mock function created by the test runner's mocking API.
@@ -4385,7 +4385,7 @@ test('mock was called twice', (t) => {
 #### `context.assert.called(fn[, message])`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
 -->
 
 * `fn` {Function} A mock function created by the test runner's mocking API.
@@ -4443,7 +4443,7 @@ highlighting.
 #### `context.assert.lastCalledWith(fn[, ...args])`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
 -->
 
 * `fn` {Function} A mock function created by the test runner's mocking API.
@@ -4465,7 +4465,7 @@ test('mock was last called with arguments', (t) => {
 #### `context.assert.nthCalledWith(fn, n[, ...args])`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
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 * `fn` {Function} A mock function created by the test runner's mocking API.

doc/api/vfs.md

@@ -653,7 +653,7 @@ myVfs.writeFileSync('/x.txt', 'fail'); // throws EROFS
 ## Class: `ComposableProvider`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
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 [`ComposableProvider`][] combines one or more providers in priority order. The first
@@ -666,7 +666,7 @@ The first provider must be writable to change the composed file system.
 ### `new ComposableProvider(providers)`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
 -->
 
 * `providers` {VirtualProvider\[]} Non-empty array of providers, ordered from
@@ -685,7 +685,7 @@ combined.writeFileSync('/config.json', '{"debug":true}');
 ### `composableProvider.providers`
 
 <!-- YAML
-added: REPLACEME
+added: v26.12.0
 -->
 
 * {VirtualProvider\[]}