113 lines
3.1 KiB
JavaScript
113 lines
3.1 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 optionsMatches = require('../../utils/optionsMatches');
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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 { isRegExp, isString } = require('../../utils/validateTypes');
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const ruleName = 'selector-max-id';
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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} ID ${max === 1 ? 'selector' : 'selectors'}`,
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});
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const meta = {
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url: 'https://stylelint.io/user-guide/rules/selector-max-id',
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};
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/** @type {import('stylelint').Rule} */
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const rule = (primary, secondaryOptions) => {
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return (root, result) => {
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const validOptions = validateOptions(
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result,
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ruleName,
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{
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actual: primary,
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possible: isNonNegativeInteger,
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},
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{
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actual: secondaryOptions,
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possible: {
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ignoreContextFunctionalPseudoClasses: [isString, isRegExp],
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},
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optional: true,
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},
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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 that are not part of ignored functional pseudo-classes
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if (
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childNode.type === 'selector' ||
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(isContextFunctionalPseudoClass(childNode) &&
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!isIgnoredContextFunctionalPseudoClass(childNode))
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) {
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checkSelector(childNode, ruleNode);
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}
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if (childNode.type === 'id') total += 1;
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return total;
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}, 0);
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if (selectorNode.type !== 'root' && selectorNode.type !== 'pseudo' && 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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/**
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* @param {import('postcss-selector-parser').Node} node
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* @returns {boolean}
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*/
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function isIgnoredContextFunctionalPseudoClass(node) {
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return (
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node.type === 'pseudo' &&
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optionsMatches(secondaryOptions, 'ignoreContextFunctionalPseudoClasses', node.value)
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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, (container) =>
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checkSelector(container, 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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