97 lines
2.7 KiB
JavaScript
97 lines
2.7 KiB
JavaScript
'use strict';
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const isContextFunctionalPseudoClass = require('../../utils/isContextFunctionalPseudoClass');
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const isNonNegativeInteger = require('../../utils/isNonNegativeInteger');
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const isStandardSyntaxRule = require('../../utils/isStandardSyntaxRule');
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const { levelOneAndTwoPseudoElements } = require('../../reference/selectors');
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const parseSelector = require('../../utils/parseSelector');
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const report = require('../../utils/report');
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const resolvedNestedSelector = require('postcss-resolve-nested-selector');
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const ruleMessages = require('../../utils/ruleMessages');
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const validateOptions = require('../../utils/validateOptions');
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const ruleName = 'selector-max-pseudo-class';
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const messages = ruleMessages(ruleName, {
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expected: (selector, max) =>
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`Expected "${selector}" to have no more than ${max} pseudo-${max === 1 ? 'class' : 'classes'}`,
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});
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const meta = {
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url: 'https://stylelint.io/user-guide/rules/selector-max-pseudo-class',
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};
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/** @type {import('stylelint').Rule} */
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const rule = (primary) => {
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return (root, result) => {
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const validOptions = validateOptions(result, ruleName, {
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actual: primary,
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possible: isNonNegativeInteger,
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});
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if (!validOptions) {
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return;
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}
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/**
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* @param {import('postcss-selector-parser').Container<string | undefined>} selectorNode
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* @param {import('postcss').Rule} ruleNode
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*/
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function checkSelector(selectorNode, ruleNode) {
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const count = selectorNode.reduce((total, childNode) => {
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// Only traverse inside actual selectors and context functional pseudo-classes
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if (childNode.type === 'selector' || isContextFunctionalPseudoClass(childNode)) {
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checkSelector(childNode, ruleNode);
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}
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// Exclude pseudo elements from the count
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if (
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childNode.type === 'pseudo' &&
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(childNode.value.includes('::') ||
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levelOneAndTwoPseudoElements.has(childNode.value.toLowerCase().slice(1)))
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) {
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return total;
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}
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if (childNode.type === 'pseudo') {
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total += 1;
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}
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return total;
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}, 0);
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if (count > primary) {
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const selector = selectorNode.toString();
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report({
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ruleName,
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result,
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node: ruleNode,
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message: messages.expected,
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messageArgs: [selector, primary],
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word: selector,
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});
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}
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}
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root.walkRules((ruleNode) => {
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if (!isStandardSyntaxRule(ruleNode)) {
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return;
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}
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for (const selector of ruleNode.selectors) {
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for (const resolvedSelector of resolvedNestedSelector(selector, ruleNode)) {
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parseSelector(resolvedSelector, result, ruleNode, (selectorTree) => {
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checkSelector(selectorTree, ruleNode);
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});
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}
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}
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});
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};
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};
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rule.ruleName = ruleName;
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rule.messages = messages;
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rule.meta = meta;
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module.exports = rule;
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