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Fix syntax-string-no-invalid performance#9061

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jeddy3 merged 2 commits intomainfrom
fix-ssni
Feb 11, 2026
Merged

Fix syntax-string-no-invalid performance#9061
jeddy3 merged 2 commits intomainfrom
fix-ssni

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@jeddy3
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@jeddy3 jeddy3 commented Feb 11, 2026

Which issue, if any, is this issue related to?

Broader performance work

Is there anything in the PR that needs further explanation?

With recent improvements to system performance (config and rule loading, etc.), it seems the next bottleneck is some of our rules, with syntax-string-no-invalid being particularly problematic.

fork is expensive, and syntax-string-no-invalid is calling it for every file being linted. A simple move ensures this rule calls fork just once per run.

I adjusted the benchmark to generate just css files, and then ran our standard config against it.

# Before
 ──────────────────────────────────────────────────────────────────────────────────────────
  Size      Files   Rules   Overrides   Time        ±CV     Per file  Memory      
  ──────────────────────────────────────────────────────────────────────────────────────────
  Small     20      0       0           247.03ms    2.2%    12.35ms   201.36 MB   
  Medium    100     0       0           701.05ms    1.2%    7.01ms    438.20 MB   
  Large     500     0       0           2.82s       1.4%    5.63ms    471.03 MB   
  X-Large   1000    0       0           5.45s       0.2%    5.45ms    575.78 MB   
  ──────────────────────────────────────────────────────────────────────────────────────────

# After
 ──────────────────────────────────────────────────────────────────────────────────────────
  Size      Files   Rules   Overrides   Time        ±CV     Per file  Memory      
  ──────────────────────────────────────────────────────────────────────────────────────────
  Small     20      0       0           221.21ms    0.6%    11.06ms   186.81 MB   
  Medium    100     0       0           565.69ms    3.1%    5.66ms    321.69 MB   
  Large     500     0       0           2.15s       1.2%    4.30ms    475.70 MB   
  X-Large   1000    0       0           3.98s       1.6%    3.98ms    557.13 MB   
  ──────────────────────────────────────────────────────────────────────────────────────────

# Comparison

 Size      Baseline    Current     Diff        Change    Status    
  ────────────────────────────────────────────────────────────────────────────
  Small     247.03ms    221.21ms    25.82ms     -10.5%    ✓ Faster  
  Medium    701.05ms    565.69ms    135.37ms    -19.3%    ✓ Faster  
  Large     2.82s       2.15s       663.78ms    -23.6%    ✓ Faster  
  X-Large   5.45s       3.98s       1.47s       -27.0%    ✓ Faster  
  ────────────────────────────────────────────────────────────────────────────

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🦋 Changeset detected

Latest commit: c6b80c8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package
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This PR is packaged and the instant preview is available (c6b80c8). View the demo website.

Install it locally:

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Good catch!
Thank you

@jeddy3 jeddy3 merged commit d717d2b into main Feb 11, 2026
19 checks passed
@jeddy3 jeddy3 deleted the fix-ssni branch February 11, 2026 15:50
renovate bot added a commit to andrei-picus-tink/auto-renovate that referenced this pull request Feb 13, 2026
| datasource | package   | from   | to     |
| ---------- | --------- | ------ | ------ |
| npm        | stylelint | 17.1.0 | 17.3.0 |


## [v17.3.0](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1730---2026-02-13)

It fixes 17 bugs. 3 related to supporting `calc()` in `declaration-property-value-no-unknown`, and 13 performance ones that make Stylelint a further 3x faster when using the rules in our [standard config](https://www.npmjs.com/package/stylelint-config-standard).

- Fixed: performance of rule sequencing ([#9055](stylelint/stylelint#9055)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `*-list` performance ([#9056](stylelint/stylelint#9056)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `*-notation` performance ([#9044](stylelint/stylelint#9044)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-max-values` performance ([#9057](stylelint/stylelint#9057)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-keyword-no-deprecated` performance ([#9058](stylelint/stylelint#9058)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-no-unknown` false negatives for math functions inside of non-math functions ([#9064](stylelint/stylelint#9064)) ([@romainmenke](https://github.com/romainmenke)).
- Fixed: `declaration-property-value-no-unknown` false positives for `calc()` with mixed operations ([#9064](stylelint/stylelint#9064)) ([@romainmenke](https://github.com/romainmenke)).
- Fixed: `declaration-property-value-no-unknown` performance ([#9062](stylelint/stylelint#9062)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-no-unknown` reported ranges for multiple math functions ([#9064](stylelint/stylelint#9064)) ([@romainmenke](https://github.com/romainmenke)).
- Fixed: `length-zero-no-unit` performance ([#9046](stylelint/stylelint#9046)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `named-grid-areas-no-invalid` false positives for mix of tabs and spaces ([#9039](stylelint/stylelint#9039)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `no-unknown-custom-media` performance ([#9059](stylelint/stylelint#9059)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `selector-max-*` performance ([#9042](stylelint/stylelint#9042)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `shorthand-property-no-redundant-values` performance ([#9047](stylelint/stylelint#9047)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `syntax-string-no-invalid` performance ([#9061](stylelint/stylelint#9061)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `time-min-milliseconds` performance ([#9060](stylelint/stylelint#9060)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `value-keyword-case` performance ([#9048](stylelint/stylelint#9048)) ([@jeddy3](https://github.com/jeddy3)).


## [v17.2.0](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1720---2026-02-10)

It fixes 7 bugs, including 5 performance ones that make Stylelint 7x faster and use 3x less memory on larger codebases such as design systems and monorepos. We also restructured our docs to create a [contributor guide](CONTRIBUTING.md). If you'd like to help out and contribute to Stylelint, that's the place to start.

- Fixed: performance of config augmentation and module imports ([#9021](stylelint/stylelint#9021)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of config override matching ([#9023](stylelint/stylelint#9023)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of config resolution ([#9033](stylelint/stylelint#9033)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of rule resolution ([#9022](stylelint/stylelint#9022)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `declaration-property-value-no-unknown` false negatives for math functions ([#9011](stylelint/stylelint#9011)) ([@ragini-pandey](https://github.com/ragini-pandey)).
- Fixed: `no-duplicate-selectors` false negatives for matching escaped selectors ([#8953](stylelint/stylelint#8953)) ([@bjnewman](https://github.com/bjnewman)).
- Fixed: `no-invalid-position-at-import-rule` false negatives for layers with blocks ([#9026](stylelint/stylelint#9026)) ([@romainmenke](https://github.com/romainmenke)).


## [v17.1.1](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1711---2026-02-03)

It fixes 2 bugs.

- Fixed: resolution of configs, plugins, processors, and custom syntaxes in Yarn PnP environments ([#9010](stylelint/stylelint#9010)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `lightness-notation` autofix for decimals ([#9009](stylelint/stylelint#9009)) ([@IlyaSemenov](https://github.com/IlyaSemenov)).
renovate bot added a commit to andrei-picus-tink/auto-renovate that referenced this pull request Feb 13, 2026
| datasource | package   | from   | to     |
| ---------- | --------- | ------ | ------ |
| npm        | stylelint | 17.1.0 | 17.3.0 |


## [v17.3.0](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1730---2026-02-13)

It fixes 17 bugs. 3 related to supporting `calc()` in `declaration-property-value-no-unknown`, and 13 performance ones that make Stylelint a further 3x faster when using the rules in our [standard config](https://www.npmjs.com/package/stylelint-config-standard).

- Fixed: performance of rule sequencing ([#9055](stylelint/stylelint#9055)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `*-list` performance ([#9056](stylelint/stylelint#9056)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `*-notation` performance ([#9044](stylelint/stylelint#9044)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-max-values` performance ([#9057](stylelint/stylelint#9057)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-keyword-no-deprecated` performance ([#9058](stylelint/stylelint#9058)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-no-unknown` false negatives for math functions inside of non-math functions ([#9064](stylelint/stylelint#9064)) ([@romainmenke](https://github.com/romainmenke)).
- Fixed: `declaration-property-value-no-unknown` false positives for `calc()` with mixed operations ([#9064](stylelint/stylelint#9064)) ([@romainmenke](https://github.com/romainmenke)).
- Fixed: `declaration-property-value-no-unknown` performance ([#9062](stylelint/stylelint#9062)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-no-unknown` reported ranges for multiple math functions ([#9064](stylelint/stylelint#9064)) ([@romainmenke](https://github.com/romainmenke)).
- Fixed: `length-zero-no-unit` performance ([#9046](stylelint/stylelint#9046)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `named-grid-areas-no-invalid` false positives for mix of tabs and spaces ([#9039](stylelint/stylelint#9039)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `no-unknown-custom-media` performance ([#9059](stylelint/stylelint#9059)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `selector-max-*` performance ([#9042](stylelint/stylelint#9042)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `shorthand-property-no-redundant-values` performance ([#9047](stylelint/stylelint#9047)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `syntax-string-no-invalid` performance ([#9061](stylelint/stylelint#9061)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `time-min-milliseconds` performance ([#9060](stylelint/stylelint#9060)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `value-keyword-case` performance ([#9048](stylelint/stylelint#9048)) ([@jeddy3](https://github.com/jeddy3)).


## [v17.2.0](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1720---2026-02-10)

It fixes 7 bugs, including 5 performance ones that make Stylelint 7x faster and use 3x less memory on larger codebases such as design systems and monorepos. We also restructured our docs to create a [contributor guide](CONTRIBUTING.md). If you'd like to help out and contribute to Stylelint, that's the place to start.

- Fixed: performance of config augmentation and module imports ([#9021](stylelint/stylelint#9021)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of config override matching ([#9023](stylelint/stylelint#9023)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of config resolution ([#9033](stylelint/stylelint#9033)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of rule resolution ([#9022](stylelint/stylelint#9022)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `declaration-property-value-no-unknown` false negatives for math functions ([#9011](stylelint/stylelint#9011)) ([@ragini-pandey](https://github.com/ragini-pandey)).
- Fixed: `no-duplicate-selectors` false negatives for matching escaped selectors ([#8953](stylelint/stylelint#8953)) ([@bjnewman](https://github.com/bjnewman)).
- Fixed: `no-invalid-position-at-import-rule` false negatives for layers with blocks ([#9026](stylelint/stylelint#9026)) ([@romainmenke](https://github.com/romainmenke)).


## [v17.1.1](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1711---2026-02-03)

It fixes 2 bugs.

- Fixed: resolution of configs, plugins, processors, and custom syntaxes in Yarn PnP environments ([#9010](stylelint/stylelint#9010)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `lightness-notation` autofix for decimals ([#9009](stylelint/stylelint#9009)) ([@IlyaSemenov](https://github.com/IlyaSemenov)).
renovate bot added a commit to andrei-picus-tink/auto-renovate that referenced this pull request Feb 14, 2026
| datasource | package   | from   | to     |
| ---------- | --------- | ------ | ------ |
| npm        | stylelint | 17.1.0 | 17.3.0 |


## [v17.3.0](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1730---2026-02-13)

It fixes 17 bugs. 3 related to supporting `calc()` in `declaration-property-value-no-unknown`, and 13 performance ones that make Stylelint a further 3x faster when using the rules in our [standard config](https://www.npmjs.com/package/stylelint-config-standard).

- Fixed: performance of rule sequencing ([#9055](stylelint/stylelint#9055)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `*-list` performance ([#9056](stylelint/stylelint#9056)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `*-notation` performance ([#9044](stylelint/stylelint#9044)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-max-values` performance ([#9057](stylelint/stylelint#9057)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-keyword-no-deprecated` performance ([#9058](stylelint/stylelint#9058)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-no-unknown` false negatives for math functions inside of non-math functions ([#9064](stylelint/stylelint#9064)) ([@romainmenke](https://github.com/romainmenke)).
- Fixed: `declaration-property-value-no-unknown` false positives for `calc()` with mixed operations ([#9064](stylelint/stylelint#9064)) ([@romainmenke](https://github.com/romainmenke)).
- Fixed: `declaration-property-value-no-unknown` performance ([#9062](stylelint/stylelint#9062)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-no-unknown` reported ranges for multiple math functions ([#9064](stylelint/stylelint#9064)) ([@romainmenke](https://github.com/romainmenke)).
- Fixed: `length-zero-no-unit` performance ([#9046](stylelint/stylelint#9046)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `named-grid-areas-no-invalid` false positives for mix of tabs and spaces ([#9039](stylelint/stylelint#9039)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `no-unknown-custom-media` performance ([#9059](stylelint/stylelint#9059)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `selector-max-*` performance ([#9042](stylelint/stylelint#9042)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `shorthand-property-no-redundant-values` performance ([#9047](stylelint/stylelint#9047)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `syntax-string-no-invalid` performance ([#9061](stylelint/stylelint#9061)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `time-min-milliseconds` performance ([#9060](stylelint/stylelint#9060)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `value-keyword-case` performance ([#9048](stylelint/stylelint#9048)) ([@jeddy3](https://github.com/jeddy3)).


## [v17.2.0](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1720---2026-02-10)

It fixes 7 bugs, including 5 performance ones that make Stylelint 7x faster and use 3x less memory on larger codebases such as design systems and monorepos. We also restructured our docs to create a [contributor guide](CONTRIBUTING.md). If you'd like to help out and contribute to Stylelint, that's the place to start.

- Fixed: performance of config augmentation and module imports ([#9021](stylelint/stylelint#9021)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of config override matching ([#9023](stylelint/stylelint#9023)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of config resolution ([#9033](stylelint/stylelint#9033)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of rule resolution ([#9022](stylelint/stylelint#9022)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `declaration-property-value-no-unknown` false negatives for math functions ([#9011](stylelint/stylelint#9011)) ([@ragini-pandey](https://github.com/ragini-pandey)).
- Fixed: `no-duplicate-selectors` false negatives for matching escaped selectors ([#8953](stylelint/stylelint#8953)) ([@bjnewman](https://github.com/bjnewman)).
- Fixed: `no-invalid-position-at-import-rule` false negatives for layers with blocks ([#9026](stylelint/stylelint#9026)) ([@romainmenke](https://github.com/romainmenke)).


## [v17.1.1](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1711---2026-02-03)

It fixes 2 bugs.

- Fixed: resolution of configs, plugins, processors, and custom syntaxes in Yarn PnP environments ([#9010](stylelint/stylelint#9010)) ([@adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `lightness-notation` autofix for decimals ([#9009](stylelint/stylelint#9009)) ([@IlyaSemenov](https://github.com/IlyaSemenov)).
robbevp pushed a commit to robbevp/website-robbevanpetegem that referenced this pull request Feb 28, 2026
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [eslint](https://eslint.org) ([source](https://github.com/eslint/eslint)) | devDependencies | patch | [`9.39.2` -> `9.39.3`](https://renovatebot.com/diffs/npm/eslint/9.39.2/9.39.3) |
| [prettier](https://prettier.io) ([source](https://github.com/prettier/prettier)) | devDependencies | patch | [`3.8.0` -> `3.8.1`](https://renovatebot.com/diffs/npm/prettier/3.8.0/3.8.1) |
| [stylelint](https://stylelint.io) ([source](https://github.com/stylelint/stylelint)) | devDependencies | minor | [`17.0.0` -> `17.4.0`](https://renovatebot.com/diffs/npm/stylelint/17.0.0/17.4.0) |

---

### Release Notes

<details>
<summary>eslint/eslint (eslint)</summary>

### [`v9.39.3`](https://github.com/eslint/eslint/releases/tag/v9.39.3)

[Compare Source](eslint/eslint@v9.39.2...v9.39.3)

#### Bug Fixes

- [`791bf8d`](eslint/eslint@791bf8d) fix: restore TypeScript 4.0 compatibility in types ([#&#8203;20504](eslint/eslint#20504)) (sethamus)

#### Chores

- [`8594a43`](eslint/eslint@8594a43) chore: upgrade [@&#8203;eslint/js](https://github.com/eslint/js)@&#8203;9.39.3 ([#&#8203;20529](eslint/eslint#20529)) (Milos Djermanovic)
- [`9ceef92`](eslint/eslint@9ceef92) chore: package.json update for [@&#8203;eslint/js](https://github.com/eslint/js) release (Jenkins)
- [`af498c6`](eslint/eslint@af498c6) chore: ignore `/docs/v9.x` in link checker ([#&#8203;20453](eslint/eslint#20453)) (Milos Djermanovic)

</details>

<details>
<summary>prettier/prettier (prettier)</summary>

### [`v3.8.1`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#381)

[Compare Source](prettier/prettier@3.8.0...3.8.1)

[diff](prettier/prettier@3.8.0...3.8.1)

##### Include available `printers` in plugin type declarations ([#&#8203;18706](prettier/prettier#18706) by [@&#8203;porada](https://github.com/porada))

<!-- prettier-ignore -->

```ts
// Input
import * as prettierPluginEstree from "prettier/plugins/estree";

// Prettier 3.8.0
// Property 'printers' does not exist on type 'typeof import("prettier/plugins/estree")'. ts(2339)
prettierPluginEstree.printers.estree; //=> any

// Prettier 3.8.1
prettierPluginEstree.printers.estree; //=> Printer
prettierPluginEstree.printers["estree-json"]; //=> Printer
```

</details>

<details>
<summary>stylelint/stylelint (stylelint)</summary>

### [`v17.4.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1740---2026-02-25)

[Compare Source](stylelint/stylelint@17.3.0...17.4.0)

It adds 2 options to the rules and fixes 7 bugs.

- Added: `ignoreAtRules: []` to `at-rule-no-vendor-prefix` ([#&#8203;9096](stylelint/stylelint#9096)) ([@&#8203;theacrat](https://github.com/theacrat)).
- Added: `ignoreMediaFeatureNames: []` to `media-feature-name-no-vendor-prefix` ([#&#8203;9097](stylelint/stylelint#9097)) ([@&#8203;theacrat](https://github.com/theacrat)).
- Fixed: performance of selector cloning rules ([#&#8203;9089](stylelint/stylelint#9089)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `*-empty-line-before` performance ([#&#8203;9092](stylelint/stylelint#9092)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-no-unknown` performance ([#&#8203;9090](stylelint/stylelint#9090)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `no-irregular-whitespace` performance ([#&#8203;9091](stylelint/stylelint#9091)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `property-no-unknown` false negatives for at-rule descriptors ([#&#8203;9109](stylelint/stylelint#9109)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `property-no-unknown` false positives for `corner-shape` ([#&#8203;9099](stylelint/stylelint#9099)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `property-no-unknown` false positives for double-slashed properties ([#&#8203;9099](stylelint/stylelint#9099)) ([@&#8203;jeddy3](https://github.com/jeddy3)).

### [`v17.3.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1730---2026-02-13)

[Compare Source](stylelint/stylelint@17.2.0...17.3.0)

It fixes 17 bugs. 3 related to supporting `calc()` in `declaration-property-value-no-unknown`, and 13 performance ones that make Stylelint a further 3x faster when using the rules in our [standard config](https://www.npmjs.com/package/stylelint-config-standard).

- Fixed: performance of rule sequencing ([#&#8203;9055](stylelint/stylelint#9055)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `*-list` performance ([#&#8203;9056](stylelint/stylelint#9056)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `*-notation` performance ([#&#8203;9044](stylelint/stylelint#9044)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-max-values` performance ([#&#8203;9057](stylelint/stylelint#9057)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-keyword-no-deprecated` performance ([#&#8203;9058](stylelint/stylelint#9058)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-no-unknown` false negatives for math functions inside of non-math functions ([#&#8203;9064](stylelint/stylelint#9064)) ([@&#8203;romainmenke](https://github.com/romainmenke)).
- Fixed: `declaration-property-value-no-unknown` false positives for `calc()` with mixed operations ([#&#8203;9064](stylelint/stylelint#9064)) ([@&#8203;romainmenke](https://github.com/romainmenke)).
- Fixed: `declaration-property-value-no-unknown` performance ([#&#8203;9062](stylelint/stylelint#9062)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `declaration-property-value-no-unknown` reported ranges for multiple math functions ([#&#8203;9064](stylelint/stylelint#9064)) ([@&#8203;romainmenke](https://github.com/romainmenke)).
- Fixed: `length-zero-no-unit` performance ([#&#8203;9046](stylelint/stylelint#9046)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `named-grid-areas-no-invalid` false positives for mix of tabs and spaces ([#&#8203;9039](stylelint/stylelint#9039)) ([@&#8203;adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `no-unknown-custom-media` performance ([#&#8203;9059](stylelint/stylelint#9059)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `selector-max-*` performance ([#&#8203;9042](stylelint/stylelint#9042)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `shorthand-property-no-redundant-values` performance ([#&#8203;9047](stylelint/stylelint#9047)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `syntax-string-no-invalid` performance ([#&#8203;9061](stylelint/stylelint#9061)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `time-min-milliseconds` performance ([#&#8203;9060](stylelint/stylelint#9060)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `value-keyword-case` performance ([#&#8203;9048](stylelint/stylelint#9048)) ([@&#8203;jeddy3](https://github.com/jeddy3)).

### [`v17.2.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1720---2026-02-10)

[Compare Source](stylelint/stylelint@17.1.1...17.2.0)

It fixes 7 bugs, including 5 performance ones that make Stylelint 7x faster and use 3x less memory on larger codebases such as design systems and monorepos. We also restructured our docs to create a [contributor guide](CONTRIBUTING.md). If you'd like to help out and contribute to Stylelint, that's the place to start.

- Fixed: performance of config augmentation and module imports ([#&#8203;9021](stylelint/stylelint#9021)) ([@&#8203;adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of config override matching ([#&#8203;9023](stylelint/stylelint#9023)) ([@&#8203;adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of config resolution ([#&#8203;9033](stylelint/stylelint#9033)) ([@&#8203;adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: performance of rule resolution ([#&#8203;9022](stylelint/stylelint#9022)) ([@&#8203;adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `declaration-property-value-no-unknown` false negatives for math functions ([#&#8203;9011](stylelint/stylelint#9011)) ([@&#8203;ragini-pandey](https://github.com/ragini-pandey)).
- Fixed: `no-duplicate-selectors` false negatives for matching escaped selectors ([#&#8203;8953](stylelint/stylelint#8953)) ([@&#8203;bjnewman](https://github.com/bjnewman)).
- Fixed: `no-invalid-position-at-import-rule` false negatives for layers with blocks ([#&#8203;9026](stylelint/stylelint#9026)) ([@&#8203;romainmenke](https://github.com/romainmenke)).

### [`v17.1.1`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1711---2026-02-03)

[Compare Source](stylelint/stylelint@17.1.0...17.1.1)

It fixes 2 bugs.

- Fixed: resolution of configs, plugins, processors, and custom syntaxes in Yarn PnP environments ([#&#8203;9010](stylelint/stylelint#9010)) ([@&#8203;adalinesimonian](https://github.com/adalinesimonian)).
- Fixed: `lightness-notation` autofix for decimals ([#&#8203;9009](stylelint/stylelint#9009)) ([@&#8203;IlyaSemenov](https://github.com/IlyaSemenov)).

### [`v17.1.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#1710---2026-01-30)

[Compare Source](stylelint/stylelint@17.0.0...17.1.0)

It fixes 5 bugs and adds the `display-notation` rule. Before we turn it on in our [standard config](https://www.npmjs.com/package/stylelint-config-standard), we'd like to [hear the community's thoughts](stylelint/stylelint-config-standard#387) on which options to use.

- Added: `display-notation` rule ([#&#8203;8981](stylelint/stylelint#8981)) ([@&#8203;romainmenke](https://github.com/romainmenke)).
- Fixed: `GlobbyOptions` TypeScript errors ([#&#8203;8992](stylelint/stylelint#8992)) ([@&#8203;zalishchuk](https://github.com/zalishchuk)).
- Fixed: `hue-degree-notation` false negatives and positives for relative colors ([#&#8203;8985](stylelint/stylelint#8985)) ([@&#8203;jamesnw](https://github.com/jamesnw)).
- Fixed: `lightness-notation` false negatives for relative colors ([#&#8203;8987](stylelint/stylelint#8987)) ([@&#8203;jamesnw](https://github.com/jamesnw)).
- Fixed: `selector-type-no-unknown` false positives for `geolocation` and `usermedia` ([#&#8203;9004](stylelint/stylelint#9004)) ([@&#8203;Mouvedia](https://github.com/Mouvedia)).
- Fixed: `selector-type-no-unknown` false positives for `rb`, `rtc` and `menuitem` ([#&#8203;8972](stylelint/stylelint#8972)) ([@&#8203;Mouvedia](https://github.com/Mouvedia)).

</details>

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Reviewed-on: https://git.robbevp.be/robbevp/website-robbevanpetegem/pulls/505
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