1 | 'use strict';
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2 |
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3 | const _ = require('lodash');
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4 | const atRuleParamIndex = require('../../utils/atRuleParamIndex');
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5 | const isCustomSelector = require('../../utils/isCustomSelector');
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6 | const isStandardSyntaxAtRule = require('../../utils/isStandardSyntaxAtRule');
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7 | const isStandardSyntaxRule = require('../../utils/isStandardSyntaxRule');
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8 | const isStandardSyntaxSelector = require('../../utils/isStandardSyntaxSelector');
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9 | const keywordSets = require('../../reference/keywordSets');
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10 | const optionsMatches = require('../../utils/optionsMatches');
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11 | const parseSelector = require('../../utils/parseSelector');
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12 | const postcss = require('postcss');
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13 | const report = require('../../utils/report');
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14 | const ruleMessages = require('../../utils/ruleMessages');
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15 | const validateOptions = require('../../utils/validateOptions');
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16 |
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17 | const ruleName = 'selector-pseudo-class-no-unknown';
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18 |
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19 | const messages = ruleMessages(ruleName, {
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20 | rejected: (selector) => `Unexpected unknown pseudo-class selector "${selector}"`,
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21 | });
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22 |
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23 | function rule(actual, options) {
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24 | return (root, result) => {
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25 | const validOptions = validateOptions(
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26 | result,
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27 | ruleName,
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28 | { actual },
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29 | {
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30 | actual: options,
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31 | possible: {
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32 | ignorePseudoClasses: [_.isString],
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33 | },
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34 | optional: true,
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35 | },
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36 | );
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37 |
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38 | if (!validOptions) {
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39 | return;
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40 | }
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41 |
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42 | function check(selector, result, node) {
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43 | parseSelector(selector, result, node, (selectorTree) => {
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44 | selectorTree.walkPseudos((pseudoNode) => {
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45 | const value = pseudoNode.value;
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46 |
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47 | if (!isStandardSyntaxSelector(value)) {
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48 | return;
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49 | }
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50 |
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51 | if (isCustomSelector(value)) {
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52 | return;
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53 | }
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54 |
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55 |
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56 | if (value.slice(0, 2) === '::') {
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57 | return;
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58 | }
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59 |
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60 | if (optionsMatches(options, 'ignorePseudoClasses', pseudoNode.value.slice(1))) {
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61 | return;
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62 | }
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63 |
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64 | let index = null;
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65 | const name = value.slice(1).toLowerCase();
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66 |
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67 | if (node.type === 'atrule' && node.name === 'page') {
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68 | if (keywordSets.atRulePagePseudoClasses.has(name)) {
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69 | return;
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70 | }
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71 |
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72 | index = atRuleParamIndex(node) + pseudoNode.sourceIndex;
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73 | } else {
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74 | if (
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75 | postcss.vendor.prefix(name) ||
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76 | keywordSets.pseudoClasses.has(name) ||
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77 | keywordSets.pseudoElements.has(name)
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78 | ) {
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79 | return;
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80 | }
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81 |
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82 | let prevPseudoElement = pseudoNode;
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83 |
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84 | do {
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85 | prevPseudoElement = prevPseudoElement.prev();
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86 |
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87 | if (prevPseudoElement && prevPseudoElement.value.slice(0, 2) === '::') {
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88 | break;
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89 | }
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90 | } while (prevPseudoElement);
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91 |
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92 | if (prevPseudoElement) {
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93 | const prevPseudoElementValue = postcss.vendor.unprefixed(
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94 | prevPseudoElement.value.toLowerCase().slice(2),
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95 | );
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96 |
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97 | if (
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98 | keywordSets.webkitProprietaryPseudoElements.has(prevPseudoElementValue) &&
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99 | keywordSets.webkitProprietaryPseudoClasses.has(name)
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100 | ) {
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101 | return;
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102 | }
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103 | }
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104 |
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105 | index = pseudoNode.sourceIndex;
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106 | }
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107 |
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108 | report({
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109 | message: messages.rejected(value),
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110 | node,
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111 | index,
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112 | ruleName,
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113 | result,
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114 | });
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115 | });
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116 | });
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117 | }
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118 |
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119 | root.walk((node) => {
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120 | let selector = null;
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121 |
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122 | if (node.type === 'rule') {
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123 | if (!isStandardSyntaxRule(node)) {
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124 | return;
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125 | }
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126 |
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127 | selector = node.selector;
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128 | } else if (node.type === 'atrule' && node.name === 'page' && node.params) {
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129 | if (!isStandardSyntaxAtRule(node)) {
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130 | return;
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131 | }
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132 |
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133 | selector = node.params;
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134 | }
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135 |
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136 |
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137 |
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138 | if (!selector) {
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139 | return;
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140 | }
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141 |
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142 |
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143 |
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144 | if (!selector.includes(':')) {
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145 | return;
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146 | }
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147 |
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148 | check(selector, result, node);
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149 | });
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150 | };
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151 | }
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152 |
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153 | rule.ruleName = ruleName;
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154 | rule.messages = messages;
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155 | module.exports = rule;
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