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- // @ts-nocheck
- 'use strict';
- const _ = require('lodash');
- const isContextFunctionalPseudoClass = require('../../utils/isContextFunctionalPseudoClass');
- const isStandardSyntaxRule = require('../../utils/isStandardSyntaxRule');
- const optionsMatches = require('../../utils/optionsMatches');
- const parseSelector = require('../../utils/parseSelector');
- const report = require('../../utils/report');
- const resolvedNestedSelector = require('postcss-resolve-nested-selector');
- const ruleMessages = require('../../utils/ruleMessages');
- const validateOptions = require('../../utils/validateOptions');
- const ruleName = 'selector-max-id';
- const messages = ruleMessages(ruleName, {
- expected: (selector, max) =>
- `Expected "${selector}" to have no more than ${max} ID ${max === 1 ? 'selector' : 'selectors'}`,
- });
- function rule(max, options) {
- return (root, result) => {
- const validOptions = validateOptions(
- result,
- ruleName,
- {
- actual: max,
- possible: [
- function (max) {
- return typeof max === 'number' && max >= 0;
- },
- ],
- },
- {
- actual: options,
- possible: {
- ignoreContextFunctionalPseudoClasses: [_.isString, _.isRegExp],
- },
- optional: true,
- },
- );
- if (!validOptions) {
- return;
- }
- function checkSelector(selectorNode, ruleNode) {
- const count = selectorNode.reduce((total, childNode) => {
- // Only traverse inside actual selectors and context functional pseudo-classes that are not part of ignored functional pseudo-classes
- if (
- childNode.type === 'selector' ||
- (isContextFunctionalPseudoClass(childNode) &&
- !isIgnoredContextFunctionalPseudoClass(childNode, options))
- ) {
- checkSelector(childNode, ruleNode);
- }
- return (total += childNode.type === 'id' ? 1 : 0);
- }, 0);
- if (selectorNode.type !== 'root' && selectorNode.type !== 'pseudo' && count > max) {
- report({
- ruleName,
- result,
- node: ruleNode,
- message: messages.expected(selectorNode, max),
- word: selectorNode,
- });
- }
- }
- function isIgnoredContextFunctionalPseudoClass(node, options) {
- return (
- node.type === 'pseudo' &&
- optionsMatches(options, 'ignoreContextFunctionalPseudoClasses', node.value)
- );
- }
- root.walkRules((ruleNode) => {
- if (!isStandardSyntaxRule(ruleNode)) {
- return;
- }
- ruleNode.selectors.forEach((selector) => {
- resolvedNestedSelector(selector, ruleNode).forEach((resolvedSelector) => {
- parseSelector(resolvedSelector, result, ruleNode, (container) =>
- checkSelector(container, ruleNode),
- );
- });
- });
- });
- };
- }
- rule.ruleName = ruleName;
- rule.messages = messages;
- module.exports = rule;
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