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75 lines
1.0 KiB
75 lines
1.0 KiB
# at-rule-no-unknown
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Disallow unknown at-rules.
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<!-- prettier-ignore -->
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```css
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@unknown (max-width: 960px) {}
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/** ↑
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* At-rules like this */
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```
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This rule considers at-rules defined in the CSS Specifications, up to and including Editor's Drafts, to be known.
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## Options
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### `true`
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The following patterns are considered violations:
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<!-- prettier-ignore -->
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```css
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@unknown {}
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```
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The following patterns are _not_ considered violations:
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<!-- prettier-ignore -->
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```css
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@charset "UTF-8";
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```
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<!-- prettier-ignore -->
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```css
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@CHARSET "UTF-8";
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```
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<!-- prettier-ignore -->
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```css
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@media (max-width: 960px) {}
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```
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<!-- prettier-ignore -->
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```css
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@font-feature-values Font One {
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@styleset {}
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}
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```
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## Optional secondary options
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### `ignoreAtRules: ["/regex/", /regex/, "string"]`
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Given:
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```
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["/^my-/", "custom"]
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```
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The following patterns are _not_ considered violations:
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<!-- prettier-ignore -->
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```css
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@my-at-rule "x.css";
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```
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<!-- prettier-ignore -->
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```css
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@my-other-at-rule {}
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```
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<!-- prettier-ignore -->
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```css
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@custom {}
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```
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