2021-03-30, Version 12.22.0 'Erbium' (LTS)

Notable changes

The legacy HTTP parser is runtime deprecated:
- The legacy HTTP parser, selected by the `--http-parser=legacy` command line
option, is deprecated with the pending End-of-Life of Node.js 10.x (where it
is the only HTTP parser implementation provided) at the end of April 2021. It
will now warn on use but otherwise continue to function and may be removed in
a future Node.js 12.x release.
- The default HTTP parser based on llhttp is not affected. By default it is
stricter than the now deprecated legacy HTTP parser. If interoperability with
HTTP implementations that send invalid HTTP headers is required, the HTTP
parser can be started in a less secure mode with the `--insecure-http-parser`
command line option.

ES Modules:
- ES Modules are now considered stable.

node-api:
- Updated to node-api version 8 and added an experimental API to allow
retrieval of the add-on file name.

New API's to control code coverage data collection:
- `v8.stopCoverage()` and `v8.takeCoverage()` have been added.

New API to monitor event loop utilization by Worker threads
- `worker.performance.eventLoopUtilization()` has been added.

PR-URL: nodejs#37797

CHANGELOG.md

@@ -76,7 +76,8 @@ release.
 <a href="doc/changelogs/CHANGELOG_V14.md#14.0.0">14.0.0</a><br/>
     </td>
     <td valign="top">
-<b><a href="doc/changelogs/CHANGELOG_V12.md#12.21.0">12.21.0</a></b><br/>
+<b><a href="doc/changelogs/CHANGELOG_V12.md#12.22.0">12.22.0</a></b><br/>
+<a href="doc/changelogs/CHANGELOG_V12.md#12.21.0">12.21.0</a><br/>
 <a href="doc/changelogs/CHANGELOG_V12.md#12.20.2">12.20.2</a><br/>
 <a href="doc/changelogs/CHANGELOG_V12.md#12.20.1">12.20.1</a><br/>
 <a href="doc/changelogs/CHANGELOG_V12.md#12.20.0">12.20.0</a><br/>

doc/api/deprecations.md

@@ -2410,6 +2410,9 @@ changes:
   - version: v13.0.0
     pr-url: https://github.com/nodejs/node/pull/29589
     description: This feature has been removed.
+  - version: v12.22.0
+    pr-url: https://github.com/nodejs/node/pull/37603
+    description: Runtime deprecation.
   - version: v12.3.0
     pr-url: https://github.com/nodejs/node/pull/27498
     description: Documentation-only.

doc/api/esm.md

@@ -7,6 +7,7 @@ added: v8.5.0
 changes:
   - version:
     - v15.3.0
+    - v12.22.0
     pr-url: https://github.com/nodejs/node/pull/35781
     description: Stabilize modules implementation.
   - version:

doc/api/n-api.md

@@ -5957,7 +5957,9 @@ This API may only be called from the main thread.
 ## node_api_get_module_file_name
 
 <!-- YAML
-added: v15.9.0
+added:
+  - v15.9.0
+  - v12.22.0
 -->
 
 > Stability: 1 - Experimental

doc/api/v8.md

@@ -226,7 +226,9 @@ setTimeout(() => { v8.setFlagsFromString('--notrace_gc'); }, 60e3);
 ## `v8.takeCoverage()`
 
 <!-- YAML
-added: v15.1.0
+added:
+  - v15.1.0
+  - v12.22.0
 -->
 
 The `v8.takeCoverage()` method allows the user to write the coverage started by
@@ -241,7 +243,9 @@ disk unless [`v8.stopCoverage()`][] is invoked before the process exits.
 ## `v8.stopCoverage()`
 
 <!-- YAML
-added: v15.1.0
+added:
+  - v15.1.0
+  - v12.22.0
 -->
 
 The `v8.stopCoverage()` method allows the user to stop the coverage collection

doc/api/worker_threads.md

@@ -1009,15 +1009,19 @@ immediately with an [`ERR_WORKER_NOT_RUNNING`][] error.
 
 ### `worker.performance`
 <!-- YAML
-added: v15.1.0
+added:
+  - v15.1.0
+  - v12.22.0
 -->
 
 An object that can be used to query performance information from a worker
 instance. Similar to [`perf_hooks.performance`][].
 
 #### `performance.eventLoopUtilization([utilization1[, utilization2]])`
 <!-- YAML
-added: v15.1.0
+added:
+  - v15.1.0
+  - v12.22.0
 -->
 
 * `utilization1` {Object} The result of a previous call to

doc/changelogs/CHANGELOG_V12.md

@@ -11,6 +11,7 @@
 </tr>
 <tr>
 <td valign="top">
+<a href="#12.22.0">12.22.0</a><br/>
 <a href="#12.21.0">12.21.0</a><br/>
 <a href="#12.20.2">12.20.2</a><br/>
 <a href="#12.20.1">12.20.1</a><br/>
@@ -72,6 +73,71 @@
   * [io.js](CHANGELOG_IOJS.md)
   * [Archive](CHANGELOG_ARCHIVE.md)
 
+<a id="12.22.0"></a>
+## 2021-03-30, Version 12.22.0 'Erbium' (LTS), @richardlau
+
+### Notable changes
+
+#### The legacy HTTP parser is runtime deprecated
+
+The legacy HTTP parser, selected by the `--http-parser=legacy` command line
+option, is deprecated with the pending End-of-Life of Node.js 10.x (where it
+is the only HTTP parser implementation provided) at the end of April 2021. It
+will now warn on use but otherwise continue to function and may be removed in
+a future Node.js 12.x release.
+
+The default HTTP parser based on llhttp is not affected. By default it is
+stricter than the now deprecated legacy HTTP parser. If interoperability with
+HTTP implementations that send invalid HTTP headers is required, the HTTP
+parser can be started in a less secure mode with the
+[`--insecure-http-parser`](https://nodejs.org/docs/latest-v12.x/api/cli.html#cli_insecure_http_parser)
+command line option.
+
+Contributed by Beth Griggs [#37603](https://github.com/nodejs/node/pull/37603).
+
+#### ES Modules
+
+ES Modules are now considered stable.
+
+Contributed by Guy Bedford [#35781](https://github.com/nodejs/node/pull/35781)
+
+#### node-api
+
+Updated to node-api version 8 and added an experimental API to allow retrieval of the add-on file name.
+
+Contributed by Gabriel Schulhof [#37652](https://github.com/nodejs/node/pull/37652) and [#37195](https://github.com/nodejs/node/pull/37195).
+
+#### New API's to control code coverage data collection
+
+`v8.stopCoverage()` and `v8.takeCoverage()` have been added.
+
+Contributed by Joyee Cheung [#33807](https://github.com/nodejs/node/pull/33807).
+
+#### New API to monitor event loop utilization by Worker threads
+
+`worker.performance.eventLoopUtilization()` has been added.
+
+Contributed by Trevor Norris [#35664](https://github.com/nodejs/node/pull/35664).
+
+### Commits
+
+* [[`1872625990`](https://github.com/nodejs/node/commit/1872625990)] - **(SEMVER-MINOR)** **deps**: update to cjs-module-lexer@1.1.0 (Guy Bedford) [#37712](https://github.com/nodejs/node/pull/37712)
+* [[`dfa04d9035`](https://github.com/nodejs/node/commit/dfa04d9035)] - **deps**: V8: cherry-pick beebee4f80ff (Peter Marshall) [#37293](https://github.com/nodejs/node/pull/37293)
+* [[`bf8733fe22`](https://github.com/nodejs/node/commit/bf8733fe22)] - **doc**: mark modules implementation as stable (Guy Bedford) [#35781](https://github.com/nodejs/node/pull/35781)
+* [[`0a35d49f56`](https://github.com/nodejs/node/commit/0a35d49f56)] - ***Revert*** "**embedding**: make Stop() stop Workers" (Anna Henningsen) [#32623](https://github.com/nodejs/node/pull/32623)
+* [[`a0b610450a`](https://github.com/nodejs/node/commit/a0b610450a)] - **(SEMVER-MINOR)** **http**: runtime deprecate legacy HTTP parser (Beth Griggs) [#37603](https://github.com/nodejs/node/pull/37603)
+* [[`2da24ac302`](https://github.com/nodejs/node/commit/2da24ac302)] - **lib**: add URI handling functions to primordials (Antoine du Hamel) [#37394](https://github.com/nodejs/node/pull/37394)
+* [[`7b0ed4ba92`](https://github.com/nodejs/node/commit/7b0ed4ba92)] - **module**: improve support of data: URLs (Antoine du Hamel) [#37392](https://github.com/nodejs/node/pull/37392)
+* [[`93dd799a86`](https://github.com/nodejs/node/commit/93dd799a86)] - **(SEMVER-MINOR)** **node-api**: define version 8 (Gabriel Schulhof) [#37652](https://github.com/nodejs/node/pull/37652)
+* [[`f5692093d3`](https://github.com/nodejs/node/commit/f5692093d3)] - **(SEMVER-MINOR)** **node-api**: allow retrieval of add-on file name (Gabriel Schulhof) [#37195](https://github.com/nodejs/node/pull/37195)
+* [[`6cef0e3678`](https://github.com/nodejs/node/commit/6cef0e3678)] - **src,test**: add regression test for nested Worker termination (Anna Henningsen) [#32623](https://github.com/nodejs/node/pull/32623)
+* [[`364bf03a68`](https://github.com/nodejs/node/commit/364bf03a68)] - **test**: fix races in test-performance-eventlooputil (Gerhard Stoebich) [#36028](https://github.com/nodejs/node/pull/36028)
+* [[`d7a4ccdf09`](https://github.com/nodejs/node/commit/d7a4ccdf09)] - **test**: correct test-worker-eventlooputil (Gerhard Stoebich) [#35891](https://github.com/nodejs/node/pull/35891)
+* [[`0f6d44500c`](https://github.com/nodejs/node/commit/0f6d44500c)] - **test**: add cpu-profiler-crash test (Santiago Gimeno) [#37293](https://github.com/nodejs/node/pull/37293)
+* [[`86f34ee18c`](https://github.com/nodejs/node/commit/86f34ee18c)] - **(SEMVER-MINOR)** **v8**: implement v8.stopCoverage() (Joyee Cheung) [#33807](https://github.com/nodejs/node/pull/33807)
+* [[`8ddea3f16d`](https://github.com/nodejs/node/commit/8ddea3f16d)] - **(SEMVER-MINOR)** **v8**: implement v8.takeCoverage() (Joyee Cheung) [#33807](https://github.com/nodejs/node/pull/33807)
+* [[`eec7542781`](https://github.com/nodejs/node/commit/eec7542781)] - **(SEMVER-MINOR)** **worker**: add eventLoopUtilization() (Trevor Norris) [#35664](https://github.com/nodejs/node/pull/35664)
+
 <a id="12.21.0"></a>
 ## 2021-02-23, Version 12.21.0 'Erbium' (LTS), @richardlau