1 | ;
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2 |
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3 | exports.__esModule = true;
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4 | exports.default = void 0;
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5 |
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6 | var _declaration = _interopRequireDefault(require("./declaration"));
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7 |
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8 | var _comment = _interopRequireDefault(require("./comment"));
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9 |
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10 | var _node = _interopRequireDefault(require("./node"));
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11 |
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12 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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13 |
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14 | function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
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15 |
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16 | function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
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17 |
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18 | function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }
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19 |
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20 | function cleanSource(nodes) {
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21 | return nodes.map(function (i) {
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22 | if (i.nodes) i.nodes = cleanSource(i.nodes);
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23 | delete i.source;
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24 | return i;
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25 | });
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26 | }
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27 | /**
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28 | * The {@link Root}, {@link AtRule}, and {@link Rule} container nodes
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29 | * inherit some common methods to help work with their children.
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30 | *
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31 | * Note that all containers can store any content. If you write a rule inside
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32 | * a rule, PostCSS will parse it.
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33 | *
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34 | * @extends Node
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35 | * @abstract
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36 | */
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37 |
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38 |
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39 | var Container =
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40 | /*#__PURE__*/
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41 | function (_Node) {
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42 | _inheritsLoose(Container, _Node);
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43 |
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44 | function Container() {
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45 | return _Node.apply(this, arguments) || this;
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46 | }
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47 |
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48 | var _proto = Container.prototype;
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49 |
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50 | _proto.push = function push(child) {
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51 | child.parent = this;
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52 | this.nodes.push(child);
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53 | return this;
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54 | }
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55 | /**
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56 | * Iterates through the container’s immediate children,
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57 | * calling `callback` for each child.
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58 | *
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59 | * Returning `false` in the callback will break iteration.
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60 | *
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61 | * This method only iterates through the container’s immediate children.
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62 | * If you need to recursively iterate through all the container’s descendant
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63 | * nodes, use {@link Container#walk}.
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64 | *
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65 | * Unlike the for `{}`-cycle or `Array#forEach` this iterator is safe
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66 | * if you are mutating the array of child nodes during iteration.
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67 | * PostCSS will adjust the current index to match the mutations.
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68 | *
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69 | * @param {childIterator} callback Iterator receives each node and index.
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70 | *
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71 | * @return {false|undefined} Returns `false` if iteration was broke.
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72 | *
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73 | * @example
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74 | * const root = postcss.parse('a { color: black; z-index: 1 }')
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75 | * const rule = root.first
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76 | *
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77 | * for (const decl of rule.nodes) {
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78 | * decl.cloneBefore({ prop: '-webkit-' + decl.prop })
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79 | * // Cycle will be infinite, because cloneBefore moves the current node
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80 | * // to the next index
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81 | * }
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82 | *
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83 | * rule.each(decl => {
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84 | * decl.cloneBefore({ prop: '-webkit-' + decl.prop })
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85 | * // Will be executed only for color and z-index
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86 | * })
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87 | */
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88 | ;
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89 |
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90 | _proto.each = function each(callback) {
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91 | if (!this.lastEach) this.lastEach = 0;
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92 | if (!this.indexes) this.indexes = {};
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93 | this.lastEach += 1;
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94 | var id = this.lastEach;
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95 | this.indexes[id] = 0;
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96 | if (!this.nodes) return undefined;
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97 | var index, result;
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98 |
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99 | while (this.indexes[id] < this.nodes.length) {
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100 | index = this.indexes[id];
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101 | result = callback(this.nodes[index], index);
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102 | if (result === false) break;
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103 | this.indexes[id] += 1;
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104 | }
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105 |
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106 | delete this.indexes[id];
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107 | return result;
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108 | }
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109 | /**
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110 | * Traverses the container’s descendant nodes, calling callback
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111 | * for each node.
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112 | *
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113 | * Like container.each(), this method is safe to use
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114 | * if you are mutating arrays during iteration.
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115 | *
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116 | * If you only need to iterate through the container’s immediate children,
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117 | * use {@link Container#each}.
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118 | *
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119 | * @param {childIterator} callback Iterator receives each node and index.
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120 | *
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121 | * @return {false|undefined} Returns `false` if iteration was broke.
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122 | *
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123 | * @example
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124 | * root.walk(node => {
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125 | * // Traverses all descendant nodes.
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126 | * })
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127 | */
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128 | ;
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129 |
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130 | _proto.walk = function walk(callback) {
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131 | return this.each(function (child, i) {
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132 | var result;
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133 |
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134 | try {
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135 | result = callback(child, i);
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136 | } catch (e) {
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137 | e.postcssNode = child;
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138 |
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139 | if (e.stack && child.source && /\n\s{4}at /.test(e.stack)) {
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140 | var s = child.source;
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141 | e.stack = e.stack.replace(/\n\s{4}at /, "$&" + s.input.from + ":" + s.start.line + ":" + s.start.column + "$&");
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142 | }
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143 |
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144 | throw e;
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145 | }
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146 |
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147 | if (result !== false && child.walk) {
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148 | result = child.walk(callback);
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149 | }
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150 |
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151 | return result;
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152 | });
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153 | }
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154 | /**
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155 | * Traverses the container’s descendant nodes, calling callback
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156 | * for each declaration node.
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157 | *
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158 | * If you pass a filter, iteration will only happen over declarations
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159 | * with matching properties.
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160 | *
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161 | * Like {@link Container#each}, this method is safe
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162 | * to use if you are mutating arrays during iteration.
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163 | *
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164 | * @param {string|RegExp} [prop] String or regular expression
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165 | * to filter declarations by property name.
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166 | * @param {childIterator} callback Iterator receives each node and index.
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167 | *
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168 | * @return {false|undefined} Returns `false` if iteration was broke.
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169 | *
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170 | * @example
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171 | * root.walkDecls(decl => {
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172 | * checkPropertySupport(decl.prop)
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173 | * })
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174 | *
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175 | * root.walkDecls('border-radius', decl => {
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176 | * decl.remove()
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177 | * })
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178 | *
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179 | * root.walkDecls(/^background/, decl => {
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180 | * decl.value = takeFirstColorFromGradient(decl.value)
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181 | * })
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182 | */
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183 | ;
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184 |
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185 | _proto.walkDecls = function walkDecls(prop, callback) {
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186 | if (!callback) {
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187 | callback = prop;
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188 | return this.walk(function (child, i) {
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189 | if (child.type === 'decl') {
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190 | return callback(child, i);
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191 | }
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192 | });
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193 | }
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194 |
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195 | if (prop instanceof RegExp) {
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196 | return this.walk(function (child, i) {
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197 | if (child.type === 'decl' && prop.test(child.prop)) {
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198 | return callback(child, i);
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199 | }
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200 | });
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201 | }
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202 |
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203 | return this.walk(function (child, i) {
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204 | if (child.type === 'decl' && child.prop === prop) {
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205 | return callback(child, i);
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206 | }
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207 | });
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208 | }
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209 | /**
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210 | * Traverses the container’s descendant nodes, calling callback
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211 | * for each rule node.
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212 | *
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213 | * If you pass a filter, iteration will only happen over rules
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214 | * with matching selectors.
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215 | *
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216 | * Like {@link Container#each}, this method is safe
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217 | * to use if you are mutating arrays during iteration.
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218 | *
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219 | * @param {string|RegExp} [selector] String or regular expression
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220 | * to filter rules by selector.
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221 | * @param {childIterator} callback Iterator receives each node and index.
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222 | *
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223 | * @return {false|undefined} returns `false` if iteration was broke.
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224 | *
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225 | * @example
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226 | * const selectors = []
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227 | * root.walkRules(rule => {
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228 | * selectors.push(rule.selector)
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229 | * })
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230 | * console.log(`Your CSS uses ${ selectors.length } selectors`)
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231 | */
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232 | ;
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233 |
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234 | _proto.walkRules = function walkRules(selector, callback) {
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235 | if (!callback) {
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236 | callback = selector;
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237 | return this.walk(function (child, i) {
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238 | if (child.type === 'rule') {
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239 | return callback(child, i);
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240 | }
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241 | });
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242 | }
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243 |
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244 | if (selector instanceof RegExp) {
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245 | return this.walk(function (child, i) {
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246 | if (child.type === 'rule' && selector.test(child.selector)) {
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247 | return callback(child, i);
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248 | }
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249 | });
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250 | }
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251 |
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252 | return this.walk(function (child, i) {
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253 | if (child.type === 'rule' && child.selector === selector) {
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254 | return callback(child, i);
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255 | }
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256 | });
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257 | }
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258 | /**
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259 | * Traverses the container’s descendant nodes, calling callback
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260 | * for each at-rule node.
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261 | *
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262 | * If you pass a filter, iteration will only happen over at-rules
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263 | * that have matching names.
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264 | *
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265 | * Like {@link Container#each}, this method is safe
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266 | * to use if you are mutating arrays during iteration.
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267 | *
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268 | * @param {string|RegExp} [name] String or regular expression
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269 | * to filter at-rules by name.
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270 | * @param {childIterator} callback Iterator receives each node and index.
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271 | *
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272 | * @return {false|undefined} Returns `false` if iteration was broke.
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273 | *
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274 | * @example
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275 | * root.walkAtRules(rule => {
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276 | * if (isOld(rule.name)) rule.remove()
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277 | * })
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278 | *
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279 | * let first = false
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280 | * root.walkAtRules('charset', rule => {
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281 | * if (!first) {
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282 | * first = true
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283 | * } else {
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284 | * rule.remove()
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285 | * }
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286 | * })
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287 | */
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288 | ;
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289 |
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290 | _proto.walkAtRules = function walkAtRules(name, callback) {
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291 | if (!callback) {
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292 | callback = name;
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293 | return this.walk(function (child, i) {
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294 | if (child.type === 'atrule') {
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295 | return callback(child, i);
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296 | }
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297 | });
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298 | }
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299 |
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300 | if (name instanceof RegExp) {
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301 | return this.walk(function (child, i) {
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302 | if (child.type === 'atrule' && name.test(child.name)) {
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303 | return callback(child, i);
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304 | }
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305 | });
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306 | }
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307 |
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308 | return this.walk(function (child, i) {
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309 | if (child.type === 'atrule' && child.name === name) {
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310 | return callback(child, i);
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311 | }
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312 | });
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313 | }
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314 | /**
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315 | * Traverses the container’s descendant nodes, calling callback
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316 | * for each comment node.
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317 | *
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318 | * Like {@link Container#each}, this method is safe
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319 | * to use if you are mutating arrays during iteration.
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320 | *
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321 | * @param {childIterator} callback Iterator receives each node and index.
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322 | *
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323 | * @return {false|undefined} Returns `false` if iteration was broke.
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324 | *
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325 | * @example
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326 | * root.walkComments(comment => {
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327 | * comment.remove()
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328 | * })
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329 | */
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330 | ;
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331 |
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332 | _proto.walkComments = function walkComments(callback) {
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333 | return this.walk(function (child, i) {
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334 | if (child.type === 'comment') {
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335 | return callback(child, i);
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336 | }
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337 | });
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338 | }
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339 | /**
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340 | * Inserts new nodes to the end of the container.
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341 | *
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342 | * @param {...(Node|object|string|Node[])} children New nodes.
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343 | *
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344 | * @return {Node} This node for methods chain.
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345 | *
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346 | * @example
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347 | * const decl1 = postcss.decl({ prop: 'color', value: 'black' })
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348 | * const decl2 = postcss.decl({ prop: 'background-color', value: 'white' })
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349 | * rule.append(decl1, decl2)
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350 | *
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351 | * root.append({ name: 'charset', params: '"UTF-8"' }) // at-rule
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352 | * root.append({ selector: 'a' }) // rule
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353 | * rule.append({ prop: 'color', value: 'black' }) // declaration
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354 | * rule.append({ text: 'Comment' }) // comment
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355 | *
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356 | * root.append('a {}')
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357 | * root.first.append('color: black; z-index: 1')
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358 | */
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359 | ;
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360 |
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361 | _proto.append = function append() {
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362 | for (var _len = arguments.length, children = new Array(_len), _key = 0; _key < _len; _key++) {
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363 | children[_key] = arguments[_key];
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364 | }
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365 |
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366 | for (var _i = 0, _children = children; _i < _children.length; _i++) {
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367 | var child = _children[_i];
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368 | var nodes = this.normalize(child, this.last);
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369 |
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370 | for (var _iterator = nodes, _isArray = Array.isArray(_iterator), _i2 = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
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371 | var _ref;
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372 |
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373 | if (_isArray) {
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374 | if (_i2 >= _iterator.length) break;
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375 | _ref = _iterator[_i2++];
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376 | } else {
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377 | _i2 = _iterator.next();
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378 | if (_i2.done) break;
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379 | _ref = _i2.value;
|
380 | }
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381 |
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382 | var node = _ref;
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383 | this.nodes.push(node);
|
384 | }
|
385 | }
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386 |
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387 | return this;
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388 | }
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389 | /**
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390 | * Inserts new nodes to the start of the container.
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391 | *
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392 | * @param {...(Node|object|string|Node[])} children New nodes.
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393 | *
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394 | * @return {Node} This node for methods chain.
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395 | *
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396 | * @example
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397 | * const decl1 = postcss.decl({ prop: 'color', value: 'black' })
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398 | * const decl2 = postcss.decl({ prop: 'background-color', value: 'white' })
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399 | * rule.prepend(decl1, decl2)
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400 | *
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401 | * root.append({ name: 'charset', params: '"UTF-8"' }) // at-rule
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402 | * root.append({ selector: 'a' }) // rule
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403 | * rule.append({ prop: 'color', value: 'black' }) // declaration
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404 | * rule.append({ text: 'Comment' }) // comment
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405 | *
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406 | * root.append('a {}')
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407 | * root.first.append('color: black; z-index: 1')
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408 | */
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409 | ;
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410 |
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411 | _proto.prepend = function prepend() {
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412 | for (var _len2 = arguments.length, children = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
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413 | children[_key2] = arguments[_key2];
|
414 | }
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415 |
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416 | children = children.reverse();
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417 |
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418 | for (var _iterator2 = children, _isArray2 = Array.isArray(_iterator2), _i3 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
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419 | var _ref2;
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420 |
|
421 | if (_isArray2) {
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422 | if (_i3 >= _iterator2.length) break;
|
423 | _ref2 = _iterator2[_i3++];
|
424 | } else {
|
425 | _i3 = _iterator2.next();
|
426 | if (_i3.done) break;
|
427 | _ref2 = _i3.value;
|
428 | }
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429 |
|
430 | var child = _ref2;
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431 | var nodes = this.normalize(child, this.first, 'prepend').reverse();
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432 |
|
433 | for (var _iterator3 = nodes, _isArray3 = Array.isArray(_iterator3), _i4 = 0, _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator]();;) {
|
434 | var _ref3;
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435 |
|
436 | if (_isArray3) {
|
437 | if (_i4 >= _iterator3.length) break;
|
438 | _ref3 = _iterator3[_i4++];
|
439 | } else {
|
440 | _i4 = _iterator3.next();
|
441 | if (_i4.done) break;
|
442 | _ref3 = _i4.value;
|
443 | }
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444 |
|
445 | var node = _ref3;
|
446 | this.nodes.unshift(node);
|
447 | }
|
448 |
|
449 | for (var id in this.indexes) {
|
450 | this.indexes[id] = this.indexes[id] + nodes.length;
|
451 | }
|
452 | }
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453 |
|
454 | return this;
|
455 | };
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456 |
|
457 | _proto.cleanRaws = function cleanRaws(keepBetween) {
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458 | _Node.prototype.cleanRaws.call(this, keepBetween);
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459 |
|
460 | if (this.nodes) {
|
461 | for (var _iterator4 = this.nodes, _isArray4 = Array.isArray(_iterator4), _i5 = 0, _iterator4 = _isArray4 ? _iterator4 : _iterator4[Symbol.iterator]();;) {
|
462 | var _ref4;
|
463 |
|
464 | if (_isArray4) {
|
465 | if (_i5 >= _iterator4.length) break;
|
466 | _ref4 = _iterator4[_i5++];
|
467 | } else {
|
468 | _i5 = _iterator4.next();
|
469 | if (_i5.done) break;
|
470 | _ref4 = _i5.value;
|
471 | }
|
472 |
|
473 | var node = _ref4;
|
474 | node.cleanRaws(keepBetween);
|
475 | }
|
476 | }
|
477 | }
|
478 | /**
|
479 | * Insert new node before old node within the container.
|
480 | *
|
481 | * @param {Node|number} exist Child or child’s index.
|
482 | * @param {Node|object|string|Node[]} add New node.
|
483 | *
|
484 | * @return {Node} This node for methods chain.
|
485 | *
|
486 | * @example
|
487 | * rule.insertBefore(decl, decl.clone({ prop: '-webkit-' + decl.prop }))
|
488 | */
|
489 | ;
|
490 |
|
491 | _proto.insertBefore = function insertBefore(exist, add) {
|
492 | exist = this.index(exist);
|
493 | var type = exist === 0 ? 'prepend' : false;
|
494 | var nodes = this.normalize(add, this.nodes[exist], type).reverse();
|
495 |
|
496 | for (var _iterator5 = nodes, _isArray5 = Array.isArray(_iterator5), _i6 = 0, _iterator5 = _isArray5 ? _iterator5 : _iterator5[Symbol.iterator]();;) {
|
497 | var _ref5;
|
498 |
|
499 | if (_isArray5) {
|
500 | if (_i6 >= _iterator5.length) break;
|
501 | _ref5 = _iterator5[_i6++];
|
502 | } else {
|
503 | _i6 = _iterator5.next();
|
504 | if (_i6.done) break;
|
505 | _ref5 = _i6.value;
|
506 | }
|
507 |
|
508 | var node = _ref5;
|
509 | this.nodes.splice(exist, 0, node);
|
510 | }
|
511 |
|
512 | var index;
|
513 |
|
514 | for (var id in this.indexes) {
|
515 | index = this.indexes[id];
|
516 |
|
517 | if (exist <= index) {
|
518 | this.indexes[id] = index + nodes.length;
|
519 | }
|
520 | }
|
521 |
|
522 | return this;
|
523 | }
|
524 | /**
|
525 | * Insert new node after old node within the container.
|
526 | *
|
527 | * @param {Node|number} exist Child or child’s index.
|
528 | * @param {Node|object|string|Node[]} add New node.
|
529 | *
|
530 | * @return {Node} This node for methods chain.
|
531 | */
|
532 | ;
|
533 |
|
534 | _proto.insertAfter = function insertAfter(exist, add) {
|
535 | exist = this.index(exist);
|
536 | var nodes = this.normalize(add, this.nodes[exist]).reverse();
|
537 |
|
538 | for (var _iterator6 = nodes, _isArray6 = Array.isArray(_iterator6), _i7 = 0, _iterator6 = _isArray6 ? _iterator6 : _iterator6[Symbol.iterator]();;) {
|
539 | var _ref6;
|
540 |
|
541 | if (_isArray6) {
|
542 | if (_i7 >= _iterator6.length) break;
|
543 | _ref6 = _iterator6[_i7++];
|
544 | } else {
|
545 | _i7 = _iterator6.next();
|
546 | if (_i7.done) break;
|
547 | _ref6 = _i7.value;
|
548 | }
|
549 |
|
550 | var node = _ref6;
|
551 | this.nodes.splice(exist + 1, 0, node);
|
552 | }
|
553 |
|
554 | var index;
|
555 |
|
556 | for (var id in this.indexes) {
|
557 | index = this.indexes[id];
|
558 |
|
559 | if (exist < index) {
|
560 | this.indexes[id] = index + nodes.length;
|
561 | }
|
562 | }
|
563 |
|
564 | return this;
|
565 | }
|
566 | /**
|
567 | * Removes node from the container and cleans the parent properties
|
568 | * from the node and its children.
|
569 | *
|
570 | * @param {Node|number} child Child or child’s index.
|
571 | *
|
572 | * @return {Node} This node for methods chain
|
573 | *
|
574 | * @example
|
575 | * rule.nodes.length //=> 5
|
576 | * rule.removeChild(decl)
|
577 | * rule.nodes.length //=> 4
|
578 | * decl.parent //=> undefined
|
579 | */
|
580 | ;
|
581 |
|
582 | _proto.removeChild = function removeChild(child) {
|
583 | child = this.index(child);
|
584 | this.nodes[child].parent = undefined;
|
585 | this.nodes.splice(child, 1);
|
586 | var index;
|
587 |
|
588 | for (var id in this.indexes) {
|
589 | index = this.indexes[id];
|
590 |
|
591 | if (index >= child) {
|
592 | this.indexes[id] = index - 1;
|
593 | }
|
594 | }
|
595 |
|
596 | return this;
|
597 | }
|
598 | /**
|
599 | * Removes all children from the container
|
600 | * and cleans their parent properties.
|
601 | *
|
602 | * @return {Node} This node for methods chain.
|
603 | *
|
604 | * @example
|
605 | * rule.removeAll()
|
606 | * rule.nodes.length //=> 0
|
607 | */
|
608 | ;
|
609 |
|
610 | _proto.removeAll = function removeAll() {
|
611 | for (var _iterator7 = this.nodes, _isArray7 = Array.isArray(_iterator7), _i8 = 0, _iterator7 = _isArray7 ? _iterator7 : _iterator7[Symbol.iterator]();;) {
|
612 | var _ref7;
|
613 |
|
614 | if (_isArray7) {
|
615 | if (_i8 >= _iterator7.length) break;
|
616 | _ref7 = _iterator7[_i8++];
|
617 | } else {
|
618 | _i8 = _iterator7.next();
|
619 | if (_i8.done) break;
|
620 | _ref7 = _i8.value;
|
621 | }
|
622 |
|
623 | var node = _ref7;
|
624 | node.parent = undefined;
|
625 | }
|
626 |
|
627 | this.nodes = [];
|
628 | return this;
|
629 | }
|
630 | /**
|
631 | * Passes all declaration values within the container that match pattern
|
632 | * through callback, replacing those values with the returned result
|
633 | * of callback.
|
634 | *
|
635 | * This method is useful if you are using a custom unit or function
|
636 | * and need to iterate through all values.
|
637 | *
|
638 | * @param {string|RegExp} pattern Replace pattern.
|
639 | * @param {object} opts Options to speed up the search.
|
640 | * @param {string|string[]} opts.props An array of property names.
|
641 | * @param {string} opts.fast String that’s used to narrow down
|
642 | * values and speed up the regexp search.
|
643 | * @param {function|string} callback String to replace pattern or callback
|
644 | * that returns a new value. The callback
|
645 | * will receive the same arguments
|
646 | * as those passed to a function parameter
|
647 | * of `String#replace`.
|
648 | *
|
649 | * @return {Node} This node for methods chain.
|
650 | *
|
651 | * @example
|
652 | * root.replaceValues(/\d+rem/, { fast: 'rem' }, string => {
|
653 | * return 15 * parseInt(string) + 'px'
|
654 | * })
|
655 | */
|
656 | ;
|
657 |
|
658 | _proto.replaceValues = function replaceValues(pattern, opts, callback) {
|
659 | if (!callback) {
|
660 | callback = opts;
|
661 | opts = {};
|
662 | }
|
663 |
|
664 | this.walkDecls(function (decl) {
|
665 | if (opts.props && opts.props.indexOf(decl.prop) === -1) return;
|
666 | if (opts.fast && decl.value.indexOf(opts.fast) === -1) return;
|
667 | decl.value = decl.value.replace(pattern, callback);
|
668 | });
|
669 | return this;
|
670 | }
|
671 | /**
|
672 | * Returns `true` if callback returns `true`
|
673 | * for all of the container’s children.
|
674 | *
|
675 | * @param {childCondition} condition Iterator returns true or false.
|
676 | *
|
677 | * @return {boolean} Is every child pass condition.
|
678 | *
|
679 | * @example
|
680 | * const noPrefixes = rule.every(i => i.prop[0] !== '-')
|
681 | */
|
682 | ;
|
683 |
|
684 | _proto.every = function every(condition) {
|
685 | return this.nodes.every(condition);
|
686 | }
|
687 | /**
|
688 | * Returns `true` if callback returns `true` for (at least) one
|
689 | * of the container’s children.
|
690 | *
|
691 | * @param {childCondition} condition Iterator returns true or false.
|
692 | *
|
693 | * @return {boolean} Is some child pass condition.
|
694 | *
|
695 | * @example
|
696 | * const hasPrefix = rule.some(i => i.prop[0] === '-')
|
697 | */
|
698 | ;
|
699 |
|
700 | _proto.some = function some(condition) {
|
701 | return this.nodes.some(condition);
|
702 | }
|
703 | /**
|
704 | * Returns a `child`’s index within the {@link Container#nodes} array.
|
705 | *
|
706 | * @param {Node} child Child of the current container.
|
707 | *
|
708 | * @return {number} Child index.
|
709 | *
|
710 | * @example
|
711 | * rule.index( rule.nodes[2] ) //=> 2
|
712 | */
|
713 | ;
|
714 |
|
715 | _proto.index = function index(child) {
|
716 | if (typeof child === 'number') {
|
717 | return child;
|
718 | }
|
719 |
|
720 | return this.nodes.indexOf(child);
|
721 | }
|
722 | /**
|
723 | * The container’s first child.
|
724 | *
|
725 | * @type {Node}
|
726 | *
|
727 | * @example
|
728 | * rule.first === rules.nodes[0]
|
729 | */
|
730 | ;
|
731 |
|
732 | _proto.normalize = function normalize(nodes, sample) {
|
733 | var _this = this;
|
734 |
|
735 | if (typeof nodes === 'string') {
|
736 | var parse = require('./parse');
|
737 |
|
738 | nodes = cleanSource(parse(nodes).nodes);
|
739 | } else if (Array.isArray(nodes)) {
|
740 | nodes = nodes.slice(0);
|
741 |
|
742 | for (var _iterator8 = nodes, _isArray8 = Array.isArray(_iterator8), _i9 = 0, _iterator8 = _isArray8 ? _iterator8 : _iterator8[Symbol.iterator]();;) {
|
743 | var _ref8;
|
744 |
|
745 | if (_isArray8) {
|
746 | if (_i9 >= _iterator8.length) break;
|
747 | _ref8 = _iterator8[_i9++];
|
748 | } else {
|
749 | _i9 = _iterator8.next();
|
750 | if (_i9.done) break;
|
751 | _ref8 = _i9.value;
|
752 | }
|
753 |
|
754 | var i = _ref8;
|
755 | if (i.parent) i.parent.removeChild(i, 'ignore');
|
756 | }
|
757 | } else if (nodes.type === 'root') {
|
758 | nodes = nodes.nodes.slice(0);
|
759 |
|
760 | for (var _iterator9 = nodes, _isArray9 = Array.isArray(_iterator9), _i10 = 0, _iterator9 = _isArray9 ? _iterator9 : _iterator9[Symbol.iterator]();;) {
|
761 | var _ref9;
|
762 |
|
763 | if (_isArray9) {
|
764 | if (_i10 >= _iterator9.length) break;
|
765 | _ref9 = _iterator9[_i10++];
|
766 | } else {
|
767 | _i10 = _iterator9.next();
|
768 | if (_i10.done) break;
|
769 | _ref9 = _i10.value;
|
770 | }
|
771 |
|
772 | var _i11 = _ref9;
|
773 | if (_i11.parent) _i11.parent.removeChild(_i11, 'ignore');
|
774 | }
|
775 | } else if (nodes.type) {
|
776 | nodes = [nodes];
|
777 | } else if (nodes.prop) {
|
778 | if (typeof nodes.value === 'undefined') {
|
779 | throw new Error('Value field is missed in node creation');
|
780 | } else if (typeof nodes.value !== 'string') {
|
781 | nodes.value = String(nodes.value);
|
782 | }
|
783 |
|
784 | nodes = [new _declaration.default(nodes)];
|
785 | } else if (nodes.selector) {
|
786 | var Rule = require('./rule');
|
787 |
|
788 | nodes = [new Rule(nodes)];
|
789 | } else if (nodes.name) {
|
790 | var AtRule = require('./at-rule');
|
791 |
|
792 | nodes = [new AtRule(nodes)];
|
793 | } else if (nodes.text) {
|
794 | nodes = [new _comment.default(nodes)];
|
795 | } else {
|
796 | throw new Error('Unknown node type in node creation');
|
797 | }
|
798 |
|
799 | var processed = nodes.map(function (i) {
|
800 | if (i.parent) i.parent.removeChild(i);
|
801 |
|
802 | if (typeof i.raws.before === 'undefined') {
|
803 | if (sample && typeof sample.raws.before !== 'undefined') {
|
804 | i.raws.before = sample.raws.before.replace(/[^\s]/g, '');
|
805 | }
|
806 | }
|
807 |
|
808 | i.parent = _this;
|
809 | return i;
|
810 | });
|
811 | return processed;
|
812 | }
|
813 | /**
|
814 | * @memberof Container#
|
815 | * @member {Node[]} nodes An array containing the container’s children.
|
816 | *
|
817 | * @example
|
818 | * const root = postcss.parse('a { color: black }')
|
819 | * root.nodes.length //=> 1
|
820 | * root.nodes[0].selector //=> 'a'
|
821 | * root.nodes[0].nodes[0].prop //=> 'color'
|
822 | */
|
823 | ;
|
824 |
|
825 | _createClass(Container, [{
|
826 | key: "first",
|
827 | get: function get() {
|
828 | if (!this.nodes) return undefined;
|
829 | return this.nodes[0];
|
830 | }
|
831 | /**
|
832 | * The container’s last child.
|
833 | *
|
834 | * @type {Node}
|
835 | *
|
836 | * @example
|
837 | * rule.last === rule.nodes[rule.nodes.length - 1]
|
838 | */
|
839 |
|
840 | }, {
|
841 | key: "last",
|
842 | get: function get() {
|
843 | if (!this.nodes) return undefined;
|
844 | return this.nodes[this.nodes.length - 1];
|
845 | }
|
846 | }]);
|
847 |
|
848 | return Container;
|
849 | }(_node.default);
|
850 |
|
851 | var _default = Container;
|
852 | /**
|
853 | * @callback childCondition
|
854 | * @param {Node} node Container child.
|
855 | * @param {number} index Child index.
|
856 | * @param {Node[]} nodes All container children.
|
857 | * @return {boolean}
|
858 | */
|
859 |
|
860 | /**
|
861 | * @callback childIterator
|
862 | * @param {Node} node Container child.
|
863 | * @param {number} index Child index.
|
864 | * @return {false|undefined} Returning `false` will break iteration.
|
865 | */
|
866 |
|
867 | exports.default = _default;
|
868 | module.exports = exports.default;
|
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Declaration from './declaration'\nimport Comment from './comment'\nimport Node from './node'\n\nfunction cleanSource (nodes) {\n  return nodes.map(i => {\n    if (i.nodes) i.nodes = cleanSource(i.nodes)\n    delete i.source\n    return i\n  })\n}\n\n/**\n * The {@link Root}, {@link AtRule}, and {@link Rule} container nodes\n * inherit some common methods to help work with their children.\n *\n * Note that all containers can store any content. If you write a rule inside\n * a rule, PostCSS will parse it.\n *\n * @extends Node\n * @abstract\n */\nclass Container extends Node {\n  push (child) {\n    child.parent = this\n    this.nodes.push(child)\n    return this\n  }\n\n  /**\n   * Iterates through the container’s immediate children,\n   * calling `callback` for each child.\n   *\n   * Returning `false` in the callback will break iteration.\n   *\n   * This method only iterates through the container’s immediate children.\n   * If you need to recursively iterate through all the container’s descendant\n   * nodes, use {@link Container#walk}.\n   *\n   * Unlike the for `{}`-cycle or `Array#forEach` this iterator is safe\n   * if you are mutating the array of child nodes during iteration.\n   * PostCSS will adjust the current index to match the mutations.\n   *\n   * @param {childIterator} callback Iterator receives each node and index.\n   *\n   * @return {false|undefined} Returns `false` if iteration was broke.\n   *\n   * @example\n   * const root = postcss.parse('a { color: black; z-index: 1 }')\n   * const rule = root.first\n   *\n   * for (const decl of rule.nodes) {\n   *   decl.cloneBefore({ prop: '-webkit-' + decl.prop })\n   *   // Cycle will be infinite, because cloneBefore moves the current node\n   *   // to the next index\n   * }\n   *\n   * rule.each(decl => {\n   *   decl.cloneBefore({ prop: '-webkit-' + decl.prop })\n   *   // Will be executed only for color and z-index\n   * })\n   */\n  each (callback) {\n    if (!this.lastEach) this.lastEach = 0\n    if (!this.indexes) this.indexes = { }\n\n    this.lastEach += 1\n    let id = this.lastEach\n    this.indexes[id] = 0\n\n    if (!this.nodes) return undefined\n\n    let index, result\n    while (this.indexes[id] < this.nodes.length) {\n      index = this.indexes[id]\n      result = callback(this.nodes[index], index)\n      if (result === false) break\n\n      this.indexes[id] += 1\n    }\n\n    delete this.indexes[id]\n\n    return result\n  }\n\n  /**\n   * Traverses the container’s descendant nodes, calling callback\n   * for each node.\n   *\n   * Like container.each(), this method is safe to use\n   * if you are mutating arrays during iteration.\n   *\n   * If you only need to iterate through the container’s immediate children,\n   * use {@link Container#each}.\n   *\n   * @param {childIterator} callback Iterator receives each node and index.\n   *\n   * @return {false|undefined} Returns `false` if iteration was broke.\n   *\n   * @example\n   * root.walk(node => {\n   *   // Traverses all descendant nodes.\n   * })\n   */\n  walk (callback) {\n    return this.each((child, i) => {\n      let result\n      try {\n        result = callback(child, i)\n      } catch (e) {\n        e.postcssNode = child\n        if (e.stack && child.source && /\\n\\s{4}at /.test(e.stack)) {\n          let s = child.source\n          e.stack = e.stack.replace(/\\n\\s{4}at /,\n            `$&${ s.input.from }:${ s.start.line }:${ s.start.column }$&`)\n        }\n        throw e\n      }\n      if (result !== false && child.walk) {\n        result = child.walk(callback)\n      }\n      return result\n    })\n  }\n\n  /**\n   * Traverses the container’s descendant nodes, calling callback\n   * for each declaration node.\n   *\n   * If you pass a filter, iteration will only happen over declarations\n   * with matching properties.\n   *\n   * Like {@link Container#each}, this method is safe\n   * to use if you are mutating arrays during iteration.\n   *\n   * @param {string|RegExp} [prop]   String or regular expression\n   *                                 to filter declarations by property name.\n   * @param {childIterator} callback Iterator receives each node and index.\n   *\n   * @return {false|undefined} Returns `false` if iteration was broke.\n   *\n   * @example\n   * root.walkDecls(decl => {\n   *   checkPropertySupport(decl.prop)\n   * })\n   *\n   * root.walkDecls('border-radius', decl => {\n   *   decl.remove()\n   * })\n   *\n   * root.walkDecls(/^background/, decl => {\n   *   decl.value = takeFirstColorFromGradient(decl.value)\n   * })\n   */\n  walkDecls (prop, callback) {\n    if (!callback) {\n      callback = prop\n      return this.walk((child, i) => {\n        if (child.type === 'decl') {\n          return callback(child, i)\n        }\n      })\n    }\n    if (prop instanceof RegExp) {\n      return this.walk((child, i) => {\n        if (child.type === 'decl' && prop.test(child.prop)) {\n          return callback(child, i)\n        }\n      })\n    }\n    return this.walk((child, i) => {\n      if (child.type === 'decl' && child.prop === prop) {\n        return callback(child, i)\n      }\n    })\n  }\n\n  /**\n   * Traverses the container’s descendant nodes, calling callback\n   * for each rule node.\n   *\n   * If you pass a filter, iteration will only happen over rules\n   * with matching selectors.\n   *\n   * Like {@link Container#each}, this method is safe\n   * to use if you are mutating arrays during iteration.\n   *\n   * @param {string|RegExp} [selector] String or regular expression\n   *                                   to filter rules by selector.\n   * @param {childIterator} callback   Iterator receives each node and index.\n   *\n   * @return {false|undefined} returns `false` if iteration was broke.\n   *\n   * @example\n   * const selectors = []\n   * root.walkRules(rule => {\n   *   selectors.push(rule.selector)\n   * })\n   * console.log(`Your CSS uses ${ selectors.length } selectors`)\n   */\n  walkRules (selector, callback) {\n    if (!callback) {\n      callback = selector\n\n      return this.walk((child, i) => {\n        if (child.type === 'rule') {\n          return callback(child, i)\n        }\n      })\n    }\n    if (selector instanceof RegExp) {\n      return this.walk((child, i) => {\n        if (child.type === 'rule' && selector.test(child.selector)) {\n          return callback(child, i)\n        }\n      })\n    }\n    return this.walk((child, i) => {\n      if (child.type === 'rule' && child.selector === selector) {\n        return callback(child, i)\n      }\n    })\n  }\n\n  /**\n   * Traverses the container’s descendant nodes, calling callback\n   * for each at-rule node.\n   *\n   * If you pass a filter, iteration will only happen over at-rules\n   * that have matching names.\n   *\n   * Like {@link Container#each}, this method is safe\n   * to use if you are mutating arrays during iteration.\n   *\n   * @param {string|RegExp} [name]   String or regular expression\n   *                                 to filter at-rules by name.\n   * @param {childIterator} callback Iterator receives each node and index.\n   *\n   * @return {false|undefined} Returns `false` if iteration was broke.\n   *\n   * @example\n   * root.walkAtRules(rule => {\n   *   if (isOld(rule.name)) rule.remove()\n   * })\n   *\n   * let first = false\n   * root.walkAtRules('charset', rule => {\n   *   if (!first) {\n   *     first = true\n   *   } else {\n   *     rule.remove()\n   *   }\n   * })\n   */\n  walkAtRules (name, callback) {\n    if (!callback) {\n      callback = name\n      return this.walk((child, i) => {\n        if (child.type === 'atrule') {\n          return callback(child, i)\n        }\n      })\n    }\n    if (name instanceof RegExp) {\n      return this.walk((child, i) => {\n        if (child.type === 'atrule' && name.test(child.name)) {\n          return callback(child, i)\n        }\n      })\n    }\n    return this.walk((child, i) => {\n      if (child.type === 'atrule' && child.name === name) {\n        return callback(child, i)\n      }\n    })\n  }\n\n  /**\n   * Traverses the container’s descendant nodes, calling callback\n   * for each comment node.\n   *\n   * Like {@link Container#each}, this method is safe\n   * to use if you are mutating arrays during iteration.\n   *\n   * @param {childIterator} callback Iterator receives each node and index.\n   *\n   * @return {false|undefined} Returns `false` if iteration was broke.\n   *\n   * @example\n   * root.walkComments(comment => {\n   *   comment.remove()\n   * })\n   */\n  walkComments (callback) {\n    return this.walk((child, i) => {\n      if (child.type === 'comment') {\n        return callback(child, i)\n      }\n    })\n  }\n\n  /**\n   * Inserts new nodes to the end of the container.\n   *\n   * @param {...(Node|object|string|Node[])} children New nodes.\n   *\n   * @return {Node} This node for methods chain.\n   *\n   * @example\n   * const decl1 = postcss.decl({ prop: 'color', value: 'black' })\n   * const decl2 = postcss.decl({ prop: 'background-color', value: 'white' })\n   * rule.append(decl1, decl2)\n   *\n   * root.append({ name: 'charset', params: '\"UTF-8\"' })  // at-rule\n   * root.append({ selector: 'a' })                       // rule\n   * rule.append({ prop: 'color', value: 'black' })       // declaration\n   * rule.append({ text: 'Comment' })                     // comment\n   *\n   * root.append('a {}')\n   * root.first.append('color: black; z-index: 1')\n   */\n  append (...children) {\n    for (let child of children) {\n      let nodes = this.normalize(child, this.last)\n      for (let node of nodes) this.nodes.push(node)\n    }\n    return this\n  }\n\n  /**\n   * Inserts new nodes to the start of the container.\n   *\n   * @param {...(Node|object|string|Node[])} children New nodes.\n   *\n   * @return {Node} This node for methods chain.\n   *\n   * @example\n   * const decl1 = postcss.decl({ prop: 'color', value: 'black' })\n   * const decl2 = postcss.decl({ prop: 'background-color', value: 'white' })\n   * rule.prepend(decl1, decl2)\n   *\n   * root.append({ name: 'charset', params: '\"UTF-8\"' })  // at-rule\n   * root.append({ selector: 'a' })                       // rule\n   * rule.append({ prop: 'color', value: 'black' })       // declaration\n   * rule.append({ text: 'Comment' })                     // comment\n   *\n   * root.append('a {}')\n   * root.first.append('color: black; z-index: 1')\n   */\n  prepend (...children) {\n    children = children.reverse()\n    for (let child of children) {\n      let nodes = this.normalize(child, this.first, 'prepend').reverse()\n      for (let node of nodes) this.nodes.unshift(node)\n      for (let id in this.indexes) {\n        this.indexes[id] = this.indexes[id] + nodes.length\n      }\n    }\n    return this\n  }\n\n  cleanRaws (keepBetween) {\n    super.cleanRaws(keepBetween)\n    if (this.nodes) {\n      for (let node of this.nodes) node.cleanRaws(keepBetween)\n    }\n  }\n\n  /**\n   * Insert new node before old node within the container.\n   *\n   * @param {Node|number} exist             Child or child’s index.\n   * @param {Node|object|string|Node[]} add New node.\n   *\n   * @return {Node} This node for methods chain.\n   *\n   * @example\n   * rule.insertBefore(decl, decl.clone({ prop: '-webkit-' + decl.prop }))\n   */\n  insertBefore (exist, add) {\n    exist = this.index(exist)\n\n    let type = exist === 0 ? 'prepend' : false\n    let nodes = this.normalize(add, this.nodes[exist], type).reverse()\n    for (let node of nodes) this.nodes.splice(exist, 0, node)\n\n    let index\n    for (let id in this.indexes) {\n      index = this.indexes[id]\n      if (exist <= index) {\n        this.indexes[id] = index + nodes.length\n      }\n    }\n\n    return this\n  }\n\n  /**\n   * Insert new node after old node within the container.\n   *\n   * @param {Node|number} exist             Child or child’s index.\n   * @param {Node|object|string|Node[]} add New node.\n   *\n   * @return {Node} This node for methods chain.\n   */\n  insertAfter (exist, add) {\n    exist = this.index(exist)\n\n    let nodes = this.normalize(add, this.nodes[exist]).reverse()\n    for (let node of nodes) this.nodes.splice(exist + 1, 0, node)\n\n    let index\n    for (let id in this.indexes) {\n      index = this.indexes[id]\n      if (exist < index) {\n        this.indexes[id] = index + nodes.length\n      }\n    }\n\n    return this\n  }\n\n  /**\n   * Removes node from the container and cleans the parent properties\n   * from the node and its children.\n   *\n   * @param {Node|number} child Child or child’s index.\n   *\n   * @return {Node} This node for methods chain\n   *\n   * @example\n   * rule.nodes.length  //=> 5\n   * rule.removeChild(decl)\n   * rule.nodes.length  //=> 4\n   * decl.parent        //=> undefined\n   */\n  removeChild (child) {\n    child = this.index(child)\n    this.nodes[child].parent = undefined\n    this.nodes.splice(child, 1)\n\n    let index\n    for (let id in this.indexes) {\n      index = this.indexes[id]\n      if (index >= child) {\n        this.indexes[id] = index - 1\n      }\n    }\n\n    return this\n  }\n\n  /**\n   * Removes all children from the container\n   * and cleans their parent properties.\n   *\n   * @return {Node} This node for methods chain.\n   *\n   * @example\n   * rule.removeAll()\n   * rule.nodes.length //=> 0\n   */\n  removeAll () {\n    for (let node of this.nodes) node.parent = undefined\n    this.nodes = []\n    return this\n  }\n\n  /**\n   * Passes all declaration values within the container that match pattern\n   * through callback, replacing those values with the returned result\n   * of callback.\n   *\n   * This method is useful if you are using a custom unit or function\n   * and need to iterate through all values.\n   *\n   * @param {string|RegExp} pattern      Replace pattern.\n   * @param {object} opts                Options to speed up the search.\n   * @param {string|string[]} opts.props An array of property names.\n   * @param {string} opts.fast           String that’s used to narrow down\n   *                                     values and speed up the regexp search.\n   * @param {function|string} callback   String to replace pattern or callback\n   *                                     that returns a new value. The callback\n   *                                     will receive the same arguments\n   *                                     as those passed to a function parameter\n   *                                     of `String#replace`.\n   *\n   * @return {Node} This node for methods chain.\n   *\n   * @example\n   * root.replaceValues(/\\d+rem/, { fast: 'rem' }, string => {\n   *   return 15 * parseInt(string) + 'px'\n   * })\n   */\n  replaceValues (pattern, opts, callback) {\n    if (!callback) {\n      callback = opts\n      opts = { }\n    }\n\n    this.walkDecls(decl => {\n      if (opts.props && opts.props.indexOf(decl.prop) === -1) return\n      if (opts.fast && decl.value.indexOf(opts.fast) === -1) return\n\n      decl.value = decl.value.replace(pattern, callback)\n    })\n\n    return this\n  }\n\n  /**\n   * Returns `true` if callback returns `true`\n   * for all of the container’s children.\n   *\n   * @param {childCondition} condition Iterator returns true or false.\n   *\n   * @return {boolean} Is every child pass condition.\n   *\n   * @example\n   * const noPrefixes = rule.every(i => i.prop[0] !== '-')\n   */\n  every (condition) {\n    return this.nodes.every(condition)\n  }\n\n  /**\n   * Returns `true` if callback returns `true` for (at least) one\n   * of the container’s children.\n   *\n   * @param {childCondition} condition Iterator returns true or false.\n   *\n   * @return {boolean} Is some child pass condition.\n   *\n   * @example\n   * const hasPrefix = rule.some(i => i.prop[0] === '-')\n   */\n  some (condition) {\n    return this.nodes.some(condition)\n  }\n\n  /**\n   * Returns a `child`’s index within the {@link Container#nodes} array.\n   *\n   * @param {Node} child Child of the current container.\n   *\n   * @return {number} Child index.\n   *\n   * @example\n   * rule.index( rule.nodes[2] ) //=> 2\n   */\n  index (child) {\n    if (typeof child === 'number') {\n      return child\n    }\n    return this.nodes.indexOf(child)\n  }\n\n  /**\n   * The container’s first child.\n   *\n   * @type {Node}\n   *\n   * @example\n   * rule.first === rules.nodes[0]\n   */\n  get first () {\n    if (!this.nodes) return undefined\n    return this.nodes[0]\n  }\n\n  /**\n   * The container’s last child.\n   *\n   * @type {Node}\n   *\n   * @example\n   * rule.last === rule.nodes[rule.nodes.length - 1]\n   */\n  get last () {\n    if (!this.nodes) return undefined\n    return this.nodes[this.nodes.length - 1]\n  }\n\n  normalize (nodes, sample) {\n    if (typeof nodes === 'string') {\n      let parse = require('./parse')\n      nodes = cleanSource(parse(nodes).nodes)\n    } else if (Array.isArray(nodes)) {\n      nodes = nodes.slice(0)\n      for (let i of nodes) {\n        if (i.parent) i.parent.removeChild(i, 'ignore')\n      }\n    } else if (nodes.type === 'root') {\n      nodes = nodes.nodes.slice(0)\n      for (let i of nodes) {\n        if (i.parent) i.parent.removeChild(i, 'ignore')\n      }\n    } else if (nodes.type) {\n      nodes = [nodes]\n    } else if (nodes.prop) {\n      if (typeof nodes.value === 'undefined') {\n        throw new Error('Value field is missed in node creation')\n      } else if (typeof nodes.value !== 'string') {\n        nodes.value = String(nodes.value)\n      }\n      nodes = [new Declaration(nodes)]\n    } else if (nodes.selector) {\n      let Rule = require('./rule')\n      nodes = [new Rule(nodes)]\n    } else if (nodes.name) {\n      let AtRule = require('./at-rule')\n      nodes = [new AtRule(nodes)]\n    } else if (nodes.text) {\n      nodes = [new Comment(nodes)]\n    } else {\n      throw new Error('Unknown node type in node creation')\n    }\n\n    let processed = nodes.map(i => {\n      if (i.parent) i.parent.removeChild(i)\n      if (typeof i.raws.before === 'undefined') {\n        if (sample && typeof sample.raws.before !== 'undefined') {\n          i.raws.before = sample.raws.before.replace(/[^\\s]/g, '')\n        }\n      }\n      i.parent = this\n      return i\n    })\n\n    return processed\n  }\n\n  /**\n   * @memberof Container#\n   * @member {Node[]} nodes An array containing the container’s children.\n   *\n   * @example\n   * const root = postcss.parse('a { color: black }')\n   * root.nodes.length           //=> 1\n   * root.nodes[0].selector      //=> 'a'\n   * root.nodes[0].nodes[0].prop //=> 'color'\n   */\n}\n\nexport default Container\n\n/**\n * @callback childCondition\n * @param {Node} node    Container child.\n * @param {number} index Child index.\n * @param {Node[]} nodes All container children.\n * @return {boolean}\n */\n\n/**\n * @callback childIterator\n * @param {Node} node    Container child.\n * @param {number} index Child index.\n * @return {false|undefined} Returning `false` will break iteration.\n */\n"],"file":"container.js"}
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