100 lines
2.5 KiB
JavaScript
100 lines
2.5 KiB
JavaScript
// @ts-nocheck
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'use strict';
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const _ = require('lodash');
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const isContextFunctionalPseudoClass = require('../../utils/isContextFunctionalPseudoClass');
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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 ruleName = 'selector-max-attribute';
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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} attribute ${
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max === 1 ? 'selector' : 'selectors'
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}`,
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});
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function rule(max, options) {
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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: max,
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possible: [
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function (max) {
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return typeof max === 'number' && max >= 0;
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},
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],
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},
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{
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actual: options,
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possible: {
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ignoreAttributes: [_.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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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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if (childNode.type !== 'attribute') {
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// Not an attribute node -> ignore
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return total;
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}
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if (optionsMatches(options, 'ignoreAttributes', childNode.attribute)) {
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// it's an attribute that is supposed to be ignored
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return total;
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}
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return (total += 1);
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}, 0);
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if (selectorNode.type !== 'root' && selectorNode.type !== 'pseudo' && count > max) {
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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(selectorNode, max),
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word: selectorNode,
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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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ruleNode.selectors.forEach((selector) => {
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resolvedNestedSelector(selector, ruleNode).forEach((resolvedSelector) => {
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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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module.exports = rule;
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