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96 lines
2.5 KiB
96 lines
2.5 KiB
// @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 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 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: isNonNegativeInteger, |
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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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