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cascade-layers : container is an element specific conditional rule #610

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Merged
merged 1 commit into from
Sep 7, 2022
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cascade-layers : container is an element specific conditional rule #610

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1 change: 0 additions & 1 deletion plugins/postcss-cascade-layers/CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,6 @@
### Unreleased

- Fix broken `@keyframes` in `@layer`.
- Add support for `@container` as a conditional rule.

### 1.0.5 (July 8, 2022)

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9 changes: 8 additions & 1 deletion plugins/postcss-cascade-layers/src/constants.ts
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Expand Up @@ -6,10 +6,17 @@ export const WITH_SELECTORS_LAYER_NAME = 'csstools-layer-with-selector-rules';
export const ANONYMOUS_LAYER_SUFFIX = '6efdb677-bb05-44e5-840f-29d2175862fd';
export const IMPLICIT_LAYER_SUFFIX = 'b147acf6-11a6-4338-a4d0-80aef4cd1a2f';

// https://drafts.csswg.org/css-cascade-5/#layer-ordering
// Layers that are defined inside of a conditional group rule do not contribute to the layer order
// unless the condition is true or unless the conditional group rule can evaluate differently for different elements in the document.
//
// Since the layer order is global to the document,
// any layers defined inside an element-sensitive conditional group rule need to be accommodated
// when establishing the global layer order, regardless of the rule’s condition.
// Conditions that are global to the document, however (such as @media and @supports) can accommodate such @layer rules conditionally.
export const CONDITIONAL_ATRULES = [
'media',
'supports',
'container',
];

export const ATRULES_WITH_NON_SELECTOR_BLOCK_LISTS = [
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