63 lines
1.1 KiB
JavaScript
63 lines
1.1 KiB
JavaScript
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'use strict';
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const uniteSets = require('../utils/uniteSets.js');
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// https://www.w3.org/TR/css-nesting-1/#conditionals
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const nestingSupportedAtKeywords = new Set(['container', 'layer', 'media', 'scope', 'supports']);
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// https://www.w3.org/TR/css-page-3/#syntax-page-selector
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const pageMarginAtKeywords = new Set([
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'top-left-corner',
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'top-left',
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'top-center',
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'top-right',
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'top-right-corner',
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'bottom-left-corner',
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'bottom-left',
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'bottom-center',
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'bottom-right',
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'bottom-right-corner',
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'left-top',
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'left-middle',
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'left-bottom',
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'right-top',
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'right-middle',
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'right-bottom',
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]);
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// https://developer.mozilla.org/en/docs/Web/CSS/At-rule
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const atKeywords = uniteSets(pageMarginAtKeywords, [
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'annotation',
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'apply',
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'character-variant',
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'charset',
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'container',
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'counter-style',
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'custom-media',
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'custom-selector',
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'document',
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'font-face',
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'font-feature-values',
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'import',
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'keyframes',
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'layer',
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'media',
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'namespace',
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'nest',
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'ornaments',
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'page',
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'property',
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'scroll-timeline',
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'scope',
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'styleset',
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'stylistic',
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'supports',
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'swash',
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'viewport',
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]);
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module.exports = {
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atKeywords,
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nestingSupportedAtKeywords,
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};
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