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node_modules/stylelint/lib/rules/selector-max-compound-selectors/index.cjs

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+// NOTICE: This file is generated by Rollup. To modify it,
+// please instead edit the ESM counterpart and rebuild with Rollup (npm run build).
+'use strict';
+
+const selectorParser = require('postcss-selector-parser');
+const validateTypes = require('../../utils/validateTypes.cjs');
+const flattenNestedSelectorsForRule = require('../../utils/flattenNestedSelectorsForRule.cjs');
+const getStrippedSelectorSource = require('../../utils/getStrippedSelectorSource.cjs');
+const isContextFunctionalPseudoClass = require('../../utils/isContextFunctionalPseudoClass.cjs');
+const isNonNegativeInteger = require('../../utils/isNonNegativeInteger.cjs');
+const isStandardSyntaxRule = require('../../utils/isStandardSyntaxRule.cjs');
+const optionsMatches = require('../../utils/optionsMatches.cjs');
+const pluralize = require('../../utils/pluralize.cjs');
+const report = require('../../utils/report.cjs');
+const ruleMessages = require('../../utils/ruleMessages.cjs');
+const validateOptions = require('../../utils/validateOptions.cjs');
+
+const { isCombinator, isPseudo, isRoot, isSelector } = selectorParser;
+
+const ruleName = 'selector-max-compound-selectors';
+
+const messages = ruleMessages(ruleName, {
+	expected: (selector, /** @type {number} */ max) =>
+		`Expected "${selector}" to have no more than ${max} compound ${pluralize('selector', max)}`,
+});
+
+const meta = {
+	url: 'https://stylelint.io/user-guide/rules/selector-max-compound-selectors',
+};
+
+/** @type {import('stylelint').CoreRules[ruleName]} */
+const rule = (primary, secondaryOptions) => {
+	return (root, result) => {
+		const validOptions = validateOptions(
+			result,
+			ruleName,
+			{
+				actual: primary,
+				possible: isNonNegativeInteger,
+			},
+			{
+				actual: secondaryOptions,
+				possible: {
+					ignoreSelectors: [validateTypes.isString, validateTypes.isRegExp],
+				},
+				optional: true,
+			},
+		);
+
+		if (!validOptions) {
+			return;
+		}
+
+		/**
+		 * @param {import('postcss-selector-parser').Node} selectorNode
+		 * @returns {boolean}
+		 */
+		function isSelectorIgnored(selectorNode) {
+			const selector = isPseudo(selectorNode) ? selectorNode.value : selectorNode.toString();
+
+			return optionsMatches(secondaryOptions, 'ignoreSelectors', selector);
+		}
+
+		/**
+		 * @param {import('postcss-selector-parser').Selector} resolvedSelectorNode
+		 * @param {import('postcss-selector-parser').Selector} selectorNode
+		 * @param {import('postcss').Rule} ruleNode
+		 */
+		function checkSelector(resolvedSelectorNode, selectorNode, ruleNode) {
+			/** @type {import('postcss-selector-parser').Node[]} */
+			const filteredChildNodes = [];
+
+			resolvedSelectorNode.each((childNode) => {
+				if (!isSelectorIgnored(childNode)) {
+					filteredChildNodes.push(childNode);
+				}
+			});
+
+			if (isRoot(selectorNode) || isPseudo(selectorNode)) return;
+
+			// Normalize selector nodes and count combinators
+			const combinatorCount = filteredChildNodes.reduce((count, node, i, nodes) => {
+				// Not count a node except a combinator
+				if (!isCombinator(node)) return count;
+
+				// Not count a combinator at the edge
+				if (i === 0 || i === nodes.length - 1) return count;
+
+				// Not count a consecutive combinator
+				if (isCombinator(nodes[i + 1])) return count;
+
+				return count + 1;
+			}, 0);
+
+			const compoundCount = combinatorCount + 1;
+
+			if (compoundCount > 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;
+
+					if (
+						isRoot(childSelector.parent) ||
+						isContextFunctionalPseudoClass(childSelector.parent)
+					) {
+						checkSelector(childSelector, selector, ruleNode);
+					}
+				});
+			});
+		});
+	};
+};
+
+rule.ruleName = ruleName;
+rule.messages = messages;
+rule.meta = meta;
+
+module.exports = rule;