1 | "use strict";
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2 | Object.defineProperty(exports, "__esModule", { value: true });
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3 | var tslib_1 = require("tslib");
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4 | var tree_1 = tslib_1.__importDefault(require("../tree"));
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5 | var visitor_1 = tslib_1.__importDefault(require("./visitor"));
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6 | var CSSVisitorUtils = (function () {
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7 | function CSSVisitorUtils(context) {
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8 | this._visitor = new visitor_1.default(this);
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9 | this._context = context;
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10 | }
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11 | CSSVisitorUtils.prototype.containsSilentNonBlockedChild = function (bodyRules) {
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12 | var rule;
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13 | if (!bodyRules) {
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14 | return false;
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15 | }
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16 | for (var r = 0; r < bodyRules.length; r++) {
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17 | rule = bodyRules[r];
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18 | if (rule.isSilent && rule.isSilent(this._context) && !rule.blocksVisibility()) {
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19 |
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20 |
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21 | return true;
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22 | }
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23 | }
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24 | return false;
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25 | };
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26 | CSSVisitorUtils.prototype.keepOnlyVisibleChilds = function (owner) {
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27 | if (owner && owner.rules) {
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28 | owner.rules = owner.rules.filter(function (thing) { return thing.isVisible(); });
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29 | }
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30 | };
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31 | CSSVisitorUtils.prototype.isEmpty = function (owner) {
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32 | return (owner && owner.rules)
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33 | ? (owner.rules.length === 0) : true;
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34 | };
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35 | CSSVisitorUtils.prototype.hasVisibleSelector = function (rulesetNode) {
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36 | return (rulesetNode && rulesetNode.paths)
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37 | ? (rulesetNode.paths.length > 0) : false;
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38 | };
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39 | CSSVisitorUtils.prototype.resolveVisibility = function (node, originalRules) {
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40 | if (!node.blocksVisibility()) {
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41 | if (this.isEmpty(node) && !this.containsSilentNonBlockedChild(originalRules)) {
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42 | return;
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43 | }
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44 | return node;
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45 | }
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46 | var compiledRulesBody = node.rules[0];
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47 | this.keepOnlyVisibleChilds(compiledRulesBody);
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48 | if (this.isEmpty(compiledRulesBody)) {
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49 | return;
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50 | }
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51 | node.ensureVisibility();
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52 | node.removeVisibilityBlock();
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53 | return node;
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54 | };
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55 | CSSVisitorUtils.prototype.isVisibleRuleset = function (rulesetNode) {
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56 | if (rulesetNode.firstRoot) {
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57 | return true;
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58 | }
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59 | if (this.isEmpty(rulesetNode)) {
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60 | return false;
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61 | }
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62 | if (!rulesetNode.root && !this.hasVisibleSelector(rulesetNode)) {
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63 | return false;
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64 | }
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65 | return true;
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66 | };
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67 | return CSSVisitorUtils;
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68 | }());
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69 | var ToCSSVisitor = function (context) {
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70 | this._visitor = new visitor_1.default(this);
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71 | this._context = context;
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72 | this.utils = new CSSVisitorUtils(context);
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73 | };
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74 | ToCSSVisitor.prototype = {
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75 | isReplacing: true,
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76 | run: function (root) {
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77 | return this._visitor.visit(root);
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78 | },
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79 | visitDeclaration: function (declNode, visitArgs) {
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80 | if (declNode.blocksVisibility() || declNode.variable) {
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81 | return;
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82 | }
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83 | return declNode;
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84 | },
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85 | visitMixinDefinition: function (mixinNode, visitArgs) {
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86 |
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87 |
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88 | mixinNode.frames = [];
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89 | },
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90 | visitExtend: function (extendNode, visitArgs) {
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91 | },
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92 | visitComment: function (commentNode, visitArgs) {
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93 | if (commentNode.blocksVisibility() || commentNode.isSilent(this._context)) {
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94 | return;
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95 | }
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96 | return commentNode;
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97 | },
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98 | visitMedia: function (mediaNode, visitArgs) {
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99 | var originalRules = mediaNode.rules[0].rules;
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100 | mediaNode.accept(this._visitor);
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101 | visitArgs.visitDeeper = false;
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102 | return this.utils.resolveVisibility(mediaNode, originalRules);
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103 | },
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104 | visitImport: function (importNode, visitArgs) {
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105 | if (importNode.blocksVisibility()) {
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106 | return;
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107 | }
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108 | return importNode;
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109 | },
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110 | visitAtRule: function (atRuleNode, visitArgs) {
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111 | if (atRuleNode.rules && atRuleNode.rules.length) {
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112 | return this.visitAtRuleWithBody(atRuleNode, visitArgs);
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113 | }
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114 | else {
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115 | return this.visitAtRuleWithoutBody(atRuleNode, visitArgs);
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116 | }
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117 | },
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118 | visitAnonymous: function (anonymousNode, visitArgs) {
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119 | if (!anonymousNode.blocksVisibility()) {
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120 | anonymousNode.accept(this._visitor);
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121 | return anonymousNode;
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122 | }
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123 | },
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124 | visitAtRuleWithBody: function (atRuleNode, visitArgs) {
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125 |
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126 |
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127 | function hasFakeRuleset(atRuleNode) {
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128 | var bodyRules = atRuleNode.rules;
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129 | return bodyRules.length === 1 && (!bodyRules[0].paths || bodyRules[0].paths.length === 0);
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130 | }
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131 | function getBodyRules(atRuleNode) {
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132 | var nodeRules = atRuleNode.rules;
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133 | if (hasFakeRuleset(atRuleNode)) {
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134 | return nodeRules[0].rules;
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135 | }
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136 | return nodeRules;
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137 | }
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138 |
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139 |
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140 |
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141 | var originalRules = getBodyRules(atRuleNode);
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142 | atRuleNode.accept(this._visitor);
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143 | visitArgs.visitDeeper = false;
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144 | if (!this.utils.isEmpty(atRuleNode)) {
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145 | this._mergeRules(atRuleNode.rules[0].rules);
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146 | }
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147 | return this.utils.resolveVisibility(atRuleNode, originalRules);
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148 | },
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149 | visitAtRuleWithoutBody: function (atRuleNode, visitArgs) {
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150 | if (atRuleNode.blocksVisibility()) {
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151 | return;
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152 | }
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153 | if (atRuleNode.name === '@charset') {
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154 |
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155 |
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156 |
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157 | if (this.charset) {
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158 | if (atRuleNode.debugInfo) {
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159 | var comment = new tree_1.default.Comment("/* " + atRuleNode.toCSS(this._context).replace(/\n/g, '') + " */\n");
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160 | comment.debugInfo = atRuleNode.debugInfo;
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161 | return this._visitor.visit(comment);
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162 | }
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163 | return;
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164 | }
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165 | this.charset = true;
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166 | }
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167 | return atRuleNode;
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168 | },
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169 | checkValidNodes: function (rules, isRoot) {
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170 | if (!rules) {
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171 | return;
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172 | }
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173 | for (var i = 0; i < rules.length; i++) {
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174 | var ruleNode = rules[i];
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175 | if (isRoot && ruleNode instanceof tree_1.default.Declaration && !ruleNode.variable) {
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176 | throw { message: 'Properties must be inside selector blocks. They cannot be in the root',
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177 | index: ruleNode.getIndex(), filename: ruleNode.fileInfo() && ruleNode.fileInfo().filename };
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178 | }
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179 | if (ruleNode instanceof tree_1.default.Call) {
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180 | throw { message: "Function '" + ruleNode.name + "' did not return a root node", index: ruleNode.getIndex(), filename: ruleNode.fileInfo() && ruleNode.fileInfo().filename };
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181 | }
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182 | if (ruleNode.type && !ruleNode.allowRoot) {
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183 | throw { message: ruleNode.type + " node returned by a function is not valid here", index: ruleNode.getIndex(), filename: ruleNode.fileInfo() && ruleNode.fileInfo().filename };
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184 | }
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185 | }
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186 | },
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187 | visitRuleset: function (rulesetNode, visitArgs) {
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188 |
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189 | var rule;
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190 | var rulesets = [];
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191 | this.checkValidNodes(rulesetNode.rules, rulesetNode.firstRoot);
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192 | if (!rulesetNode.root) {
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193 |
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194 | this._compileRulesetPaths(rulesetNode);
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195 |
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196 | var nodeRules = rulesetNode.rules;
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197 | var nodeRuleCnt = nodeRules ? nodeRules.length : 0;
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198 | for (var i = 0; i < nodeRuleCnt;) {
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199 | rule = nodeRules[i];
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200 | if (rule && rule.rules) {
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201 |
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202 | rulesets.push(this._visitor.visit(rule));
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203 | nodeRules.splice(i, 1);
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204 | nodeRuleCnt--;
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205 | continue;
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206 | }
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207 | i++;
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208 | }
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209 |
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210 |
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211 |
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212 | if (nodeRuleCnt > 0) {
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213 | rulesetNode.accept(this._visitor);
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214 | }
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215 | else {
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216 | rulesetNode.rules = null;
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217 | }
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218 | visitArgs.visitDeeper = false;
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219 | }
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220 | else {
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221 | rulesetNode.accept(this._visitor);
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222 | visitArgs.visitDeeper = false;
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223 | }
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224 | if (rulesetNode.rules) {
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225 | this._mergeRules(rulesetNode.rules);
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226 | this._removeDuplicateRules(rulesetNode.rules);
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227 | }
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228 |
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229 | if (this.utils.isVisibleRuleset(rulesetNode)) {
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230 | rulesetNode.ensureVisibility();
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231 | rulesets.splice(0, 0, rulesetNode);
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232 | }
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233 | if (rulesets.length === 1) {
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234 | return rulesets[0];
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235 | }
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236 | return rulesets;
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237 | },
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238 | _compileRulesetPaths: function (rulesetNode) {
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239 | if (rulesetNode.paths) {
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240 | rulesetNode.paths = rulesetNode.paths
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241 | .filter(function (p) {
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242 | var i;
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243 | if (p[0].elements[0].combinator.value === ' ') {
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244 | p[0].elements[0].combinator = new (tree_1.default.Combinator)('');
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245 | }
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246 | for (i = 0; i < p.length; i++) {
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247 | if (p[i].isVisible() && p[i].getIsOutput()) {
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248 | return true;
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249 | }
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250 | }
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251 | return false;
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252 | });
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253 | }
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254 | },
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255 | _removeDuplicateRules: function (rules) {
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256 | if (!rules) {
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257 | return;
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258 | }
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259 |
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260 | var ruleCache = {};
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261 | var ruleList;
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262 | var rule;
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263 | var i;
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264 | for (i = rules.length - 1; i >= 0; i--) {
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265 | rule = rules[i];
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266 | if (rule instanceof tree_1.default.Declaration) {
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267 | if (!ruleCache[rule.name]) {
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268 | ruleCache[rule.name] = rule;
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269 | }
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270 | else {
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271 | ruleList = ruleCache[rule.name];
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272 | if (ruleList instanceof tree_1.default.Declaration) {
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273 | ruleList = ruleCache[rule.name] = [ruleCache[rule.name].toCSS(this._context)];
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274 | }
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275 | var ruleCSS = rule.toCSS(this._context);
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276 | if (ruleList.indexOf(ruleCSS) !== -1) {
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277 | rules.splice(i, 1);
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278 | }
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279 | else {
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280 | ruleList.push(ruleCSS);
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281 | }
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282 | }
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283 | }
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284 | }
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285 | },
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286 | _mergeRules: function (rules) {
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287 | if (!rules) {
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288 | return;
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289 | }
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290 | var groups = {};
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291 | var groupsArr = [];
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292 | for (var i = 0; i < rules.length; i++) {
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293 | var rule = rules[i];
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294 | if (rule.merge) {
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295 | var key = rule.name;
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296 | groups[key] ? rules.splice(i--, 1) :
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297 | groupsArr.push(groups[key] = []);
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298 | groups[key].push(rule);
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299 | }
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300 | }
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301 | groupsArr.forEach(function (group) {
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302 | if (group.length > 0) {
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303 | var result_1 = group[0];
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304 | var space_1 = [];
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305 | var comma_1 = [new tree_1.default.Expression(space_1)];
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306 | group.forEach(function (rule) {
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307 | if ((rule.merge === '+') && (space_1.length > 0)) {
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308 | comma_1.push(new tree_1.default.Expression(space_1 = []));
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309 | }
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310 | space_1.push(rule.value);
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311 | result_1.important = result_1.important || rule.important;
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312 | });
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313 | result_1.value = new tree_1.default.Value(comma_1);
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314 | }
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315 | });
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316 | }
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317 | };
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318 | exports.default = ToCSSVisitor;
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319 |
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