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node_modules/stylelint/lib/rules/selector-max-universal/index.mjs

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+import selectorParser from 'postcss-selector-parser';
+const { isSelector } = selectorParser;
+
+import flattenNestedSelectorsForRule from '../../utils/flattenNestedSelectorsForRule.mjs';
+import getStrippedSelectorSource from '../../utils/getStrippedSelectorSource.mjs';
+import isNonNegativeInteger from '../../utils/isNonNegativeInteger.mjs';
+import isStandardSyntaxRule from '../../utils/isStandardSyntaxRule.mjs';
+import { isString } from '../../utils/validateTypes.mjs';
+import optionsMatches from '../../utils/optionsMatches.mjs';
+import report from '../../utils/report.mjs';
+import ruleMessages from '../../utils/ruleMessages.mjs';
+import validateOptions from '../../utils/validateOptions.mjs';
+
+const ruleName = 'selector-max-universal';
+
+const messages = ruleMessages(ruleName, {
+	expected: (selector, max) =>
+		`Expected "${selector}" to have no more than ${max} universal ${
+			max === 1 ? 'selector' : 'selectors'
+		}`,
+});
+
+const meta = {
+	url: 'https://stylelint.io/user-guide/rules/selector-max-universal',
+};
+
+/** @type {import('stylelint').CoreRules[ruleName]} */
+const rule = (primary, secondaryOptions) => {
+	return (root, result) => {
+		const validOptions = validateOptions(
+			result,
+			ruleName,
+			{
+				actual: primary,
+				possible: isNonNegativeInteger,
+			},
+			{
+				actual: secondaryOptions,
+				possible: {
+					ignoreAfterCombinators: [isString],
+				},
+				optional: true,
+			},
+		);
+
+		if (!validOptions) {
+			return;
+		}
+
+		/**
+		 * @param {import('postcss-selector-parser').Selector} resolvedSelectorNode
+		 * @param {import('postcss-selector-parser').Selector} selectorNode
+		 * @param {import('postcss').Rule} ruleNode
+		 */
+		function checkSelector(resolvedSelectorNode, selectorNode, ruleNode) {
+			const count = resolvedSelectorNode.reduce((total, childNode) => {
+				const prevChildNode = childNode.prev();
+				const prevChildNodeValue = prevChildNode && prevChildNode.value;
+
+				if (childNode.type === 'universal') {
+					if (!optionsMatches(secondaryOptions, 'ignoreAfterCombinators', prevChildNodeValue)) {
+						total += 1;
+					}
+				}
+
+				return total;
+			}, 0);
+
+			if (count > primary) {
+				const { index, endIndex, selector: selectorStr } = getStrippedSelectorSource(selectorNode);
+
+				report({
+					ruleName,
+					result,
+					node: ruleNode,
+					message: messages.expected,
+					messageArgs: [selectorStr, primary],
+					index,
+					endIndex,
+				});
+			}
+		}
+
+		root.walkRules((ruleNode) => {
+			if (!isStandardSyntaxRule(ruleNode)) return;
+
+			flattenNestedSelectorsForRule(ruleNode, result).forEach(({ selector, resolvedSelectors }) => {
+				resolvedSelectors.walk((childSelector) => {
+					if (!isSelector(childSelector)) return;
+
+					checkSelector(childSelector, selector, ruleNode);
+				});
+			});
+		});
+	};
+};
+
+rule.ruleName = ruleName;
+rule.messages = messages;
+rule.meta = meta;
+export default rule;