Support Angular v21.2 by fisker · Pull Request #18722 · prettier/prettier

fisker · 2026-01-23T01:05:36Z

Description

Checklist

I’ve added tests to confirm my change works.
(If changing the API or CLI) I’ve documented the changes I’ve made (in the docs/ directory).
(If the change is user-facing) I’ve added my changes to changelog_unreleased/*/XXXX.md file following changelog_unreleased/TEMPLATE.md.
I’ve read the contributing guidelines.

pkg-pr-new · 2026-01-23T01:07:48Z

yarn add https://pkg.pr.new/@prettier/[email protected]

yarn add https://pkg.pr.new/@prettier/[email protected]

yarn add https://pkg.pr.new/[email protected]

commit: ab07779

netlify · 2026-01-23T01:10:00Z

✅ Deploy Preview for prettier ready!

Name	Link
🔨 Latest commit	`ab07779`
🔍 Latest deploy log	https://app.netlify.com/projects/prettier/deploys/69d8593530fa740008dbdd75
😎 Deploy Preview	https://deploy-preview-18722--prettier.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

To edit notification comments on pull requests, go to your Netlify project configuration.

JeanMeche · 2026-02-20T00:18:07Z

21.2 RC has landed.

Can we make sure that the following expressions are correctly formatted by prettier:

arrow functions
instanceof expressions
exhaustive typechecking with @default never; (see feat(compiler): Exhaustive checks for switch blocks angular/angular#66429)

Huge thank you!

# Conflicts: # package.json # yarn.lock

fisker · 2026-04-10T02:46:26Z

Released as v3.8.2 https://github.com/prettier/prettier/releases/tag/3.8.2

…fleeting-plugin-hetzner!364) This MR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [prettier](https://prettier.io) ([source](https://github.com/prettier/prettier)) | `3.8.1` → `3.8.2` | ![age](https://developer.mend.io/api/mc/badges/age/npm/prettier/3.8.2?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/prettier/3.8.1/3.8.2?slim=true) | Note: The `pre-commit` manager in Renovate is not supported by the `pre-commit` maintainers or community. Please do not report any problems there, instead [create a Discussion in the Renovate repository](https://github.com/renovatebot/renovate/discussions/new) if you have any questions. --- ### Release Notes <details> <summary>prettier/prettier (prettier)</summary> ### [`v3.8.2`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#382) [Compare Source](prettier/prettier@3.8.1...3.8.2) [diff](prettier/prettier@3.8.1...3.8.2) ##### Angular: Support Angular v21.2 ([#18722](prettier/prettier#18722), [#19034](prettier/prettier#19034) by [@fisker](https://github.com/fisker)) Exhaustive typechecking with `@default never;`  ```html  @switch (foo) { @case (1) {} @default never; }  SyntaxError: Incomplete block "default never". If you meant to write the @ character, you should use the "&#64;" HTML entity instead. (3:3)  @switch (foo) { @case (1) {} @default never; } ``` `arrow function` and `instanceof` expressions.  ```html  @let fn = (a) => a? 1:2; {{ fn ( a instanceof b)}}  @let fn = (a) => a? 1:2; {{ fn ( a instanceof b)}}  @let fn = (a) => (a ? 1 : 2); {{ fn(a instanceof b) }} ``` </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - At any time (no schedule defined) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever MR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this MR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).

This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [prettier](https://prettier.io) ([source](https://github.com/prettier/prettier)) | [`3.8.1` → `3.8.2`](https://renovatebot.com/diffs/npm/prettier/3.8.1/3.8.2) | ![age](https://developer.mend.io/api/mc/badges/age/npm/prettier/3.8.2?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/prettier/3.8.1/3.8.2?slim=true) | --- ### Release Notes <details> <summary>prettier/prettier (prettier)</summary> ### [`v3.8.2`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#382) [Compare Source](prettier/prettier@3.8.1...3.8.2) [diff](prettier/prettier@3.8.1...3.8.2) ##### Angular: Support Angular v21.2 ([#18722](prettier/prettier#18722), [#19034](prettier/prettier#19034) by [@fisker](https://github.com/fisker)) Exhaustive typechecking with `@default never;`  ```html  @switch (foo) { @case (1) {} @default never; }  SyntaxError: Incomplete block "default never". If you meant to write the @ character, you should use the "&#64;" HTML entity instead. (3:3)  @switch (foo) { @case (1) {} @default never; } ``` `arrow function` and `instanceof` expressions.  ```html  @let fn = (a) => a? 1:2; {{ fn ( a instanceof b)}}  @let fn = (a) => a? 1:2; {{ fn ( a instanceof b)}}  @let fn = (a) => (a ? 1 : 2); {{ fn(a instanceof b) }} ``` </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  Reviewed-on: https://git.3caravelle.net/3Caravelle/renovate/pulls/26 Co-authored-by: Renovate Bot <[email protected]> Co-committed-by: Renovate Bot <[email protected]>

This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [eslint](https://eslint.org) ([source](https://github.com/eslint/eslint)) | devDependencies | patch | [`9.39.3` -> `9.39.4`](https://renovatebot.com/diffs/npm/eslint/9.39.3/9.39.4) | | [prettier](https://prettier.io) ([source](https://github.com/prettier/prettier)) | devDependencies | patch | [`3.8.1` -> `3.8.3`](https://renovatebot.com/diffs/npm/prettier/3.8.1/3.8.3) | | [stylelint](https://stylelint.io) ([source](https://github.com/stylelint/stylelint)) | devDependencies | minor | [`17.4.0` -> `17.8.0`](https://renovatebot.com/diffs/npm/stylelint/17.4.0/17.8.0) | --- ### Release Notes <details> <summary>eslint/eslint (eslint)</summary> ### [`v9.39.4`](https://github.com/eslint/eslint/releases/tag/v9.39.4) [Compare Source](eslint/eslint@v9.39.3...v9.39.4) #### Bug Fixes - [`f18f6c8`](eslint/eslint@f18f6c8) fix: update dependency minimatch to ^3.1.5 ([#20564](eslint/eslint#20564)) (Milos Djermanovic) - [`a3c868f`](eslint/eslint@a3c868f) fix: update dependency [@eslint/eslintrc](https://github.com/eslint/eslintrc) to ^3.3.4 ([#20554](eslint/eslint#20554)) (Milos Djermanovic) - [`234d005`](eslint/eslint@234d005) fix: minimatch security vulnerability patch for v9.x ([#20549](eslint/eslint#20549)) (Andrej Beles) - [`b1b37ee`](eslint/eslint@b1b37ee) fix: update `ajv` to `6.14.0` to address security vulnerabilities ([#20538](eslint/eslint#20538)) (루밀LuMir) #### Documentation - [`4675152`](eslint/eslint@4675152) docs: add deprecation notice partial ([#20520](eslint/eslint#20520)) (Milos Djermanovic) #### Chores - [`b8b4eb1`](eslint/eslint@b8b4eb1) chore: update dependencies for ESLint v9.39.4 ([#20596](eslint/eslint#20596)) (Francesco Trotta) - [`71b2f6b`](eslint/eslint@71b2f6b) chore: package.json update for [@eslint/js](https://github.com/eslint/js) release (Jenkins) - [`1d16c2f`](eslint/eslint@1d16c2f) ci: pin Node.js 25.6.1 ([#20563](eslint/eslint#20563)) (Milos Djermanovic) </details> <details> <summary>prettier/prettier (prettier)</summary> ### [`v3.8.3`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#383) [Compare Source](prettier/prettier@3.8.2...3.8.3) [diff](prettier/prettier@3.8.2...3.8.3) ##### SCSS: Prevent trailing comma in `if()` function ([#18471](prettier/prettier#18471) by [@kovsu](https://github.com/kovsu))  ```scss // Input $value: if(sass(false): 1; else: -1); // Prettier 3.8.2 $value: if( sass(false): 1; else: -1, ); // Prettier 3.8.3 $value: if(sass(false): 1; else: -1); ``` ### [`v3.8.2`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#382) [Compare Source](prettier/prettier@3.8.1...3.8.2) [diff](prettier/prettier@3.8.1...3.8.2) ##### Angular: Support Angular v21.2 ([#18722](prettier/prettier#18722), [#19034](prettier/prettier#19034) by [@fisker](https://github.com/fisker)) Exhaustive typechecking with `@default never;`  ```html  @switch (foo) { @case (1) {} @default never; }  SyntaxError: Incomplete block "default never". If you meant to write the @ character, you should use the "&#64;" HTML entity instead. (3:3)  @switch (foo) { @case (1) {} @default never; } ``` `arrow function` and `instanceof` expressions.  ```html  @let fn = (a) => a? 1:2; {{ fn ( a instanceof b)}}  @let fn = (a) => a? 1:2; {{ fn ( a instanceof b)}}  @let fn = (a) => (a ? 1 : 2); {{ fn(a instanceof b) }} ``` </details> <details> <summary>stylelint/stylelint (stylelint)</summary> ### [`v17.8.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1780---2026-04-15) [Compare Source](stylelint/stylelint@17.7.0...17.8.0) It adds 3 new rules and 1 configuration property. - Added: `languageOptions.directionality` configuration property ([#8687](stylelint/stylelint#8687)) ([@sw1tch3roo](https://github.com/sw1tch3roo)). - Added: `property-layout-mappings` rule ([#8687](stylelint/stylelint#8687)) ([@sw1tch3roo](https://github.com/sw1tch3roo)). - Added: `relative-selector-nesting-notation` rule ([#8730](stylelint/stylelint#8730)) ([@sw1tch3roo](https://github.com/sw1tch3roo)). - Added: `selector-no-deprecated` rule ([#8694](stylelint/stylelint#8694)) ([@immitsu](https://github.com/immitsu)). ### [`v17.7.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1770---2026-04-12) [Compare Source](stylelint/stylelint@17.6.0...17.7.0) It fixes 4 bugs, including clearer problem messages by removing filler words and leading with the problem. We've also released `1.0.0` of [create-stylelint](https://github.com/stylelint/create-stylelint) to help with first-time Stylelint setup. - Fixed: clarity of problem messages ([#9199](stylelint/stylelint#9199)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `--print-config` CLI flag to hide internal properties ([#9194](stylelint/stylelint#9194)) ([@ybiquitous](https://github.com/ybiquitous)). - Fixed: `function-url-quotes` false positives when URLs have modifiers ([#8702](stylelint/stylelint#8702)) ([@immitsu](https://github.com/immitsu)). - Fixed: `selector-no-qualifying-type` false positives for `:has()` ([#9182](stylelint/stylelint#9182)) ([@romainmenke](https://github.com/romainmenke)). ### [`v17.6.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1760---2026-03-26) [Compare Source](stylelint/stylelint@17.5.0...17.6.0) It adds support for extending units in `languageOptions`, which then apply to rules like `declaration-property-value-no-unknown`, and fixes 2 bugs. - Added: support for extending units to `languageOptions` ([#9166](stylelint/stylelint#9166)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: missing `ruleMetadata` when linting multiple files with overrides ([#9154](stylelint/stylelint#9154)) ([@kovsu](https://github.com/kovsu)). - Fixed: `custom-property-no-missing-var-function` false positives for `timeline-scope` and `animation-timeline` ([#9164](stylelint/stylelint#9164)) ([@splincode](https://github.com/splincode)). ### [`v17.5.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1750---2026-03-19) [Compare Source](stylelint/stylelint@17.4.0...17.5.0) It deprecates two rule options, adds 1 rule option and fixes 7 bugs. We've also released [`2.1.0`](https://github.com/stylelint/vscode-stylelint/releases/tag/2.1.0) of [our VS Code extension](https://marketplace.visualstudio.com/items?itemName=stylelint.vscode-stylelint), which adds 8 new requested features, and our [first release](https://www.npmjs.com/package/@stylelint/language-server) of the Stylelint Language Server. - Deprecated: `*syntax` options from `declaration-property-value-no-unknown` ([#9102](stylelint/stylelint#9102)) ([@ragini-pandey](https://github.com/ragini-pandey)). - Added: `ignoreMediaFeatureNameValues: {}` to `media-feature-name-value-no-unknown` ([#8976](stylelint/stylelint#8976)) ([@kovsu](https://github.com/kovsu)). - Fixed: `node_modules` not ignored when using `codeFilename` in Node.js API ([#9130](stylelint/stylelint#9130)) ([@adalinesimonian](https://github.com/adalinesimonian)). - Fixed: `Error TS7016` for imported `css-tree` types ([#9133](stylelint/stylelint#9133)) ([@ragini-pandey](https://github.com/ragini-pandey)). - Fixed: `declaration-property-value-keyword-no-deprecated` false positives for function arguments ([#9116](stylelint/stylelint#9116)) ([@ragini-pandey](https://github.com/ragini-pandey)). - Fixed: `declaration-property-value-no-unknown` false positives for `calc-size()` containing `size` keyword ([#9105](stylelint/stylelint#9105)) ([@hriztam](https://github.com/hriztam)). - Fixed: `no-descending-specificity` & `no-duplicate-selectors` false negatives for equivalent compound selectors ([#8977](stylelint/stylelint#8977)) ([@kovsu](https://github.com/kovsu)). - Fixed: `no-invalid-position-declaration` false positives for `@mixin` and `@scope` ([#9120](stylelint/stylelint#9120)) ([@ragini-pandey](https://github.com/ragini-pandey)). - Fixed: `property-no-unknown` false negatives for `types` ([#9117](stylelint/stylelint#9117)) ([@Mouvedia](https://github.com/Mouvedia)). </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 👻 **Immortal**: This PR will be recreated if closed unmerged. Get [config help](https://github.com/renovatebot/renovate/discussions) if that's undesired. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  Reviewed-on: https://git.robbevp.be/robbevp/website-robbevanpetegem/pulls/508 Co-authored-by: Renovate Bot <[email protected]> Co-committed-by: Renovate Bot <[email protected]>

fisker force-pushed the angular-21-2 branch from d3b9f9f to 92fb24f Compare January 23, 2026 01:38

fisker added the do-not-merge label Jan 23, 2026

fisker force-pushed the angular-21-2 branch 2 times, most recently from 511f391 to 05ed3e7 Compare January 30, 2026 19:49

cexbrayat mentioned this pull request Feb 26, 2026

feat: default never in switch Ninja-Squad/rare-basket#1104

Draft

1 task

fisker force-pushed the angular-21-2 branch from 05ed3e7 to 4c66b55 Compare March 4, 2026 17:00

JeanMeche mentioned this pull request Mar 26, 2026

Add support for angular @switch exhaustive type check case "@default never;" #18966

Closed

fisker added 11 commits April 10, 2026 09:15

Support Angular v21.2

3227342

Clean

108fc17

Snapshot

6f6f060

No comma

f35bd6f

Tests

e3df03a

[email protected]

05c9953

Add changelog

be650fc

[email protected]

7e029f6

Fix trailing comma handling for Angular functions

68208d8

Update snapshots

db76951

@angular/[email protected]

98ed1ed

fisker force-pushed the angular-21-2 branch from 32c28cb to 98ed1ed Compare April 10, 2026 01:20

fisker mentioned this pull request Apr 10, 2026

Support default never in Angular v21.2 #19034

Merged

4 tasks

fisker added 2 commits April 10, 2026 09:52

Merge branch 'main' into angular-21-2

e55faa5

# Conflicts: # package.json # yarn.lock

Update changelog

ab07779

fisker removed the do-not-merge label Apr 10, 2026

fisker marked this pull request as ready for review April 10, 2026 01:59

fisker merged commit 384cf33 into prettier:main Apr 10, 2026
39 checks passed

fisker deleted the angular-21-2 branch April 10, 2026 02:03

fisker added a commit that referenced this pull request Apr 10, 2026

Support Angular v21.2 (#18722)

96bbaed

diegohaz mentioned this pull request Apr 13, 2026

Update prettier to 3.8.2 ariakit/ariakit#5752

Merged

github-actions Bot mentioned this pull request Apr 15, 2026

chore(deps): update dependency prettier to v3.8.2 lacolaco/blog.lacolaco.net#1502

Merged

1 task

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Support Angular v21.2#18722

Support Angular v21.2#18722
fisker merged 13 commits intoprettier:mainfrom
fisker:angular-21-2

fisker commented Jan 23, 2026

Uh oh!

pkg-pr-new Bot commented Jan 23, 2026 •

edited

Loading

Uh oh!

netlify Bot commented Jan 23, 2026 •

edited

Loading

Uh oh!

JeanMeche commented Feb 20, 2026 •

edited

Loading

Uh oh!

Uh oh!

fisker commented Apr 10, 2026

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

2 participants

Uh oh!

Conversation

fisker commented Jan 23, 2026

Description

Checklist

Uh oh!

pkg-pr-new Bot commented Jan 23, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

netlify Bot commented Jan 23, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

✅ Deploy Preview for prettier ready!

Uh oh!

JeanMeche commented Feb 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

Uh oh!

fisker commented Apr 10, 2026

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

2 participants

pkg-pr-new Bot commented Jan 23, 2026 •

edited

Loading

netlify Bot commented Jan 23, 2026 •

edited

Loading

JeanMeche commented Feb 20, 2026 •

edited

Loading