25 lines
553 B
JavaScript
25 lines
553 B
JavaScript
import { isAtRule } from './typeGuards.mjs';
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const IS_UNICODE_RANGE = /^unicode-range$/i;
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const IS_AT_FONT_FACE = /^font-face$/i;
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/**
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* Check whether a declaration is the `unicode-range` descriptor of an `@font-face` rule.
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*
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* @param {import('postcss').Declaration} decl
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* @returns {boolean}
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*/
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export default function isUnicodeRangeDescriptor(decl) {
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if (!IS_UNICODE_RANGE.test(decl.prop)) {
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return false;
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}
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const parent = decl.parent;
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if (!parent || !isAtRule(parent)) {
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return false;
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}
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return IS_AT_FONT_FACE.test(parent.name);
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}
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