.config/coc/extensions/node_modules/coc-prettier/node_modules/postcss/lib/container.js

   1 'use strict';
   2
   3 exports.__esModule = true;
   4
   5 var _createClass = function () { 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
   6
   7 var _declaration = require('./declaration');
   8
   9 var _declaration2 = _interopRequireDefault(_declaration);
  10
  11 var _comment = require('./comment');
  12
  13 var _comment2 = _interopRequireDefault(_comment);
  14
  15 var _node = require('./node');
  16
  17 var _node2 = _interopRequireDefault(_node);
  18
  19 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  20
  21 function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
  22
  23 function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
  24
  25 function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
  26
  27 function cleanSource(nodes) {
  28     return nodes.map(function (i) {
  29         if (i.nodes) i.nodes = cleanSource(i.nodes);
  30         delete i.source;
  31         return i;
  32     });
  33 }
  34
  35 /**
  36  * The {@link Root}, {@link AtRule}, and {@link Rule} container nodes
  37  * inherit some common methods to help work with their children.
  38  *
  39  * Note that all containers can store any content. If you write a rule inside
  40  * a rule, PostCSS will parse it.
  41  *
  42  * @extends Node
  43  * @abstract
  44  */
  45
  46 var Container = function (_Node) {
  47     _inherits(Container, _Node);
  48
  49     function Container() {
  50         _classCallCheck(this, Container);
  51
  52         return _possibleConstructorReturn(this, _Node.apply(this, arguments));
  53     }
  54
  55     Container.prototype.push = function push(child) {
  56         child.parent = this;
  57         this.nodes.push(child);
  58         return this;
  59     };
  60
  61     /**
  62      * Iterates through the container’s immediate children,
  63      * calling `callback` for each child.
  64      *
  65      * Returning `false` in the callback will break iteration.
  66      *
  67      * This method only iterates through the container’s immediate children.
  68      * If you need to recursively iterate through all the container’s descendant
  69      * nodes, use {@link Container#walk}.
  70      *
  71      * Unlike the for `{}`-cycle or `Array#forEach` this iterator is safe
  72      * if you are mutating the array of child nodes during iteration.
  73      * PostCSS will adjust the current index to match the mutations.
  74      *
  75      * @param {childIterator} callback - iterator receives each node and index
  76      *
  77      * @return {false|undefined} returns `false` if iteration was broke
  78      *
  79      * @example
  80      * const root = postcss.parse('a { color: black; z-index: 1 }');
  81      * const rule = root.first;
  82      *
  83      * for ( let decl of rule.nodes ) {
  84      *     decl.cloneBefore({ prop: '-webkit-' + decl.prop });
  85      *     // Cycle will be infinite, because cloneBefore moves the current node
  86      *     // to the next index
  87      * }
  88      *
  89      * rule.each(decl => {
  90      *     decl.cloneBefore({ prop: '-webkit-' + decl.prop });
  91      *     // Will be executed only for color and z-index
  92      * });
  93      */
  94
  95
  96     Container.prototype.each = function each(callback) {
  97         if (!this.lastEach) this.lastEach = 0;
  98         if (!this.indexes) this.indexes = {};
  99
 100         this.lastEach += 1;
 101         var id = this.lastEach;
 102         this.indexes[id] = 0;
 103
 104         if (!this.nodes) return undefined;
 105
 106         var index = void 0,
 107             result = void 0;
 108         while (this.indexes[id] < this.nodes.length) {
 109             index = this.indexes[id];
 110             result = callback(this.nodes[index], index);
 111             if (result === false) break;
 112
 113             this.indexes[id] += 1;
 114         }
 115
 116         delete this.indexes[id];
 117
 118         return result;
 119     };
 120
 121     /**
 122      * Traverses the container’s descendant nodes, calling callback
 123      * for each node.
 124      *
 125      * Like container.each(), this method is safe to use
 126      * if you are mutating arrays during iteration.
 127      *
 128      * If you only need to iterate through the container’s immediate children,
 129      * use {@link Container#each}.
 130      *
 131      * @param {childIterator} callback - iterator receives each node and index
 132      *
 133      * @return {false|undefined} returns `false` if iteration was broke
 134      *
 135      * @example
 136      * root.walk(node => {
 137      *   // Traverses all descendant nodes.
 138      * });
 139      */
 140
 141
 142     Container.prototype.walk = function walk(callback) {
 143         return this.each(function (child, i) {
 144             var result = callback(child, i);
 145             if (result !== false && child.walk) {
 146                 result = child.walk(callback);
 147             }
 148             return result;
 149         });
 150     };
 151
 152     /**
 153      * Traverses the container’s descendant nodes, calling callback
 154      * for each declaration node.
 155      *
 156      * If you pass a filter, iteration will only happen over declarations
 157      * with matching properties.
 158      *
 159      * Like {@link Container#each}, this method is safe
 160      * to use if you are mutating arrays during iteration.
 161      *
 162      * @param {string|RegExp} [prop]   - string or regular expression
 163      *                                   to filter declarations by property name
 164      * @param {childIterator} callback - iterator receives each node and index
 165      *
 166      * @return {false|undefined} returns `false` if iteration was broke
 167      *
 168      * @example
 169      * root.walkDecls(decl => {
 170      *   checkPropertySupport(decl.prop);
 171      * });
 172      *
 173      * root.walkDecls('border-radius', decl => {
 174      *   decl.remove();
 175      * });
 176      *
 177      * root.walkDecls(/^background/, decl => {
 178      *   decl.value = takeFirstColorFromGradient(decl.value);
 179      * });
 180      */
 181
 182
 183     Container.prototype.walkDecls = function walkDecls(prop, callback) {
 184         if (!callback) {
 185             callback = prop;
 186             return this.walk(function (child, i) {
 187                 if (child.type === 'decl') {
 188                     return callback(child, i);
 189                 }
 190             });
 191         } else if (prop instanceof RegExp) {
 192             return this.walk(function (child, i) {
 193                 if (child.type === 'decl' && prop.test(child.prop)) {
 194                     return callback(child, i);
 195                 }
 196             });
 197         } else {
 198             return this.walk(function (child, i) {
 199                 if (child.type === 'decl' && child.prop === prop) {
 200                     return callback(child, i);
 201                 }
 202             });
 203         }
 204     };
 205
 206     /**
 207      * Traverses the container’s descendant nodes, calling callback
 208      * for each rule node.
 209      *
 210      * If you pass a filter, iteration will only happen over rules
 211      * with matching selectors.
 212      *
 213      * Like {@link Container#each}, this method is safe
 214      * to use if you are mutating arrays during iteration.
 215      *
 216      * @param {string|RegExp} [selector] - string or regular expression
 217      *                                     to filter rules by selector
 218      * @param {childIterator} callback   - iterator receives each node and index
 219      *
 220      * @return {false|undefined} returns `false` if iteration was broke
 221      *
 222      * @example
 223      * const selectors = [];
 224      * root.walkRules(rule => {
 225      *   selectors.push(rule.selector);
 226      * });
 227      * console.log(`Your CSS uses ${selectors.length} selectors`);
 228      */
 229
 230
 231     Container.prototype.walkRules = function walkRules(selector, callback) {
 232         if (!callback) {
 233             callback = selector;
 234
 235             return this.walk(function (child, i) {
 236                 if (child.type === 'rule') {
 237                     return callback(child, i);
 238                 }
 239             });
 240         } else if (selector instanceof RegExp) {
 241             return this.walk(function (child, i) {
 242                 if (child.type === 'rule' && selector.test(child.selector)) {
 243                     return callback(child, i);
 244                 }
 245             });
 246         } else {
 247             return this.walk(function (child, i) {
 248                 if (child.type === 'rule' && child.selector === selector) {
 249                     return callback(child, i);
 250                 }
 251             });
 252         }
 253     };
 254
 255     /**
 256      * Traverses the container’s descendant nodes, calling callback
 257      * for each at-rule node.
 258      *
 259      * If you pass a filter, iteration will only happen over at-rules
 260      * that have matching names.
 261      *
 262      * Like {@link Container#each}, this method is safe
 263      * to use if you are mutating arrays during iteration.
 264      *
 265      * @param {string|RegExp} [name]   - string or regular expression
 266      *                                   to filter at-rules by name
 267      * @param {childIterator} callback - iterator receives each node and index
 268      *
 269      * @return {false|undefined} returns `false` if iteration was broke
 270      *
 271      * @example
 272      * root.walkAtRules(rule => {
 273      *   if ( isOld(rule.name) ) rule.remove();
 274      * });
 275      *
 276      * let first = false;
 277      * root.walkAtRules('charset', rule => {
 278      *   if ( !first ) {
 279      *     first = true;
 280      *   } else {
 281      *     rule.remove();
 282      *   }
 283      * });
 284      */
 285
 286
 287     Container.prototype.walkAtRules = function walkAtRules(name, callback) {
 288         if (!callback) {
 289             callback = name;
 290             return this.walk(function (child, i) {
 291                 if (child.type === 'atrule') {
 292                     return callback(child, i);
 293                 }
 294             });
 295         } else if (name instanceof RegExp) {
 296             return this.walk(function (child, i) {
 297                 if (child.type === 'atrule' && name.test(child.name)) {
 298                     return callback(child, i);
 299                 }
 300             });
 301         } else {
 302             return this.walk(function (child, i) {
 303                 if (child.type === 'atrule' && child.name === name) {
 304                     return callback(child, i);
 305                 }
 306             });
 307         }
 308     };
 309
 310     /**
 311      * Traverses the container’s descendant nodes, calling callback
 312      * for each comment node.
 313      *
 314      * Like {@link Container#each}, this method is safe
 315      * to use if you are mutating arrays during iteration.
 316      *
 317      * @param {childIterator} callback - iterator receives each node and index
 318      *
 319      * @return {false|undefined} returns `false` if iteration was broke
 320      *
 321      * @example
 322      * root.walkComments(comment => {
 323      *   comment.remove();
 324      * });
 325      */
 326
 327
 328     Container.prototype.walkComments = function walkComments(callback) {
 329         return this.walk(function (child, i) {
 330             if (child.type === 'comment') {
 331                 return callback(child, i);
 332             }
 333         });
 334     };
 335
 336     /**
 337      * Inserts new nodes to the end of the container.
 338      *
 339      * @param {...(Node|object|string|Node[])} children - new nodes
 340      *
 341      * @return {Node} this node for methods chain
 342      *
 343      * @example
 344      * const decl1 = postcss.decl({ prop: 'color', value: 'black' });
 345      * const decl2 = postcss.decl({ prop: 'background-color', value: 'white' });
 346      * rule.append(decl1, decl2);
 347      *
 348      * root.append({ name: 'charset', params: '"UTF-8"' });  // at-rule
 349      * root.append({ selector: 'a' });                       // rule
 350      * rule.append({ prop: 'color', value: 'black' });       // declaration
 351      * rule.append({ text: 'Comment' })                      // comment
 352      *
 353      * root.append('a {}');
 354      * root.first.append('color: black; z-index: 1');
 355      */
 356
 357
 358     Container.prototype.append = function append() {
 359         for (var _len = arguments.length, children = Array(_len), _key = 0; _key < _len; _key++) {
 360             children[_key] = arguments[_key];
 361         }
 362
 363         for (var _iterator = children, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
 364             var _ref;
 365
 366             if (_isArray) {
 367                 if (_i >= _iterator.length) break;
 368                 _ref = _iterator[_i++];
 369             } else {
 370                 _i = _iterator.next();
 371                 if (_i.done) break;
 372                 _ref = _i.value;
 373             }
 374
 375             var child = _ref;
 376
 377             var nodes = this.normalize(child, this.last);
 378             for (var _iterator2 = nodes, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
 379                 var _ref2;
 380
 381                 if (_isArray2) {
 382                     if (_i2 >= _iterator2.length) break;
 383                     _ref2 = _iterator2[_i2++];
 384                 } else {
 385                     _i2 = _iterator2.next();
 386                     if (_i2.done) break;
 387                     _ref2 = _i2.value;
 388                 }
 389
 390                 var node = _ref2;
 391                 this.nodes.push(node);
 392             }
 393         }
 394         return this;
 395     };
 396
 397     /**
 398      * Inserts new nodes to the start of the container.
 399      *
 400      * @param {...(Node|object|string|Node[])} children - new nodes
 401      *
 402      * @return {Node} this node for methods chain
 403      *
 404      * @example
 405      * const decl1 = postcss.decl({ prop: 'color', value: 'black' });
 406      * const decl2 = postcss.decl({ prop: 'background-color', value: 'white' });
 407      * rule.prepend(decl1, decl2);
 408      *
 409      * root.append({ name: 'charset', params: '"UTF-8"' });  // at-rule
 410      * root.append({ selector: 'a' });                       // rule
 411      * rule.append({ prop: 'color', value: 'black' });       // declaration
 412      * rule.append({ text: 'Comment' })                      // comment
 413      *
 414      * root.append('a {}');
 415      * root.first.append('color: black; z-index: 1');
 416      */
 417
 418
 419     Container.prototype.prepend = function prepend() {
 420         for (var _len2 = arguments.length, children = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
 421             children[_key2] = arguments[_key2];
 422         }
 423
 424         children = children.reverse();
 425         for (var _iterator3 = children, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator]();;) {
 426             var _ref3;
 427
 428             if (_isArray3) {
 429                 if (_i3 >= _iterator3.length) break;
 430                 _ref3 = _iterator3[_i3++];
 431             } else {
 432                 _i3 = _iterator3.next();
 433                 if (_i3.done) break;
 434                 _ref3 = _i3.value;
 435             }
 436
 437             var child = _ref3;
 438
 439             var nodes = this.normalize(child, this.first, 'prepend').reverse();
 440             for (var _iterator4 = nodes, _isArray4 = Array.isArray(_iterator4), _i4 = 0, _iterator4 = _isArray4 ? _iterator4 : _iterator4[Symbol.iterator]();;) {
 441                 var _ref4;
 442
 443                 if (_isArray4) {
 444                     if (_i4 >= _iterator4.length) break;
 445                     _ref4 = _iterator4[_i4++];
 446                 } else {
 447                     _i4 = _iterator4.next();
 448                     if (_i4.done) break;
 449                     _ref4 = _i4.value;
 450                 }
 451
 452                 var node = _ref4;
 453                 this.nodes.unshift(node);
 454             }for (var id in this.indexes) {
 455                 this.indexes[id] = this.indexes[id] + nodes.length;
 456             }
 457         }
 458         return this;
 459     };
 460
 461     Container.prototype.cleanRaws = function cleanRaws(keepBetween) {
 462         _Node.prototype.cleanRaws.call(this, keepBetween);
 463         if (this.nodes) {
 464             for (var _iterator5 = this.nodes, _isArray5 = Array.isArray(_iterator5), _i5 = 0, _iterator5 = _isArray5 ? _iterator5 : _iterator5[Symbol.iterator]();;) {
 465                 var _ref5;
 466
 467                 if (_isArray5) {
 468                     if (_i5 >= _iterator5.length) break;
 469                     _ref5 = _iterator5[_i5++];
 470                 } else {
 471                     _i5 = _iterator5.next();
 472                     if (_i5.done) break;
 473                     _ref5 = _i5.value;
 474                 }
 475
 476                 var node = _ref5;
 477                 node.cleanRaws(keepBetween);
 478             }
 479         }
 480     };
 481
 482     /**
 483      * Insert new node before old node within the container.
 484      *
 485      * @param {Node|number} exist             - child or child’s index.
 486      * @param {Node|object|string|Node[]} add - new node
 487      *
 488      * @return {Node} this node for methods chain
 489      *
 490      * @example
 491      * rule.insertBefore(decl, decl.clone({ prop: '-webkit-' + decl.prop }));
 492      */
 493
 494
 495     Container.prototype.insertBefore = function insertBefore(exist, add) {
 496         exist = this.index(exist);
 497
 498         var type = exist === 0 ? 'prepend' : false;
 499         var nodes = this.normalize(add, this.nodes[exist], type).reverse();
 500         for (var _iterator6 = nodes, _isArray6 = Array.isArray(_iterator6), _i6 = 0, _iterator6 = _isArray6 ? _iterator6 : _iterator6[Symbol.iterator]();;) {
 501             var _ref6;
 502
 503             if (_isArray6) {
 504                 if (_i6 >= _iterator6.length) break;
 505                 _ref6 = _iterator6[_i6++];
 506             } else {
 507                 _i6 = _iterator6.next();
 508                 if (_i6.done) break;
 509                 _ref6 = _i6.value;
 510             }
 511
 512             var node = _ref6;
 513             this.nodes.splice(exist, 0, node);
 514         }var index = void 0;
 515         for (var id in this.indexes) {
 516             index = this.indexes[id];
 517             if (exist <= index) {
 518                 this.indexes[id] = index + nodes.length;
 519             }
 520         }
 521
 522         return this;
 523     };
 524
 525     /**
 526      * Insert new node after old node within the container.
 527      *
 528      * @param {Node|number} exist             - child or child’s index
 529      * @param {Node|object|string|Node[]} add - new node
 530      *
 531      * @return {Node} this node for methods chain
 532      */
 533
 534
 535     Container.prototype.insertAfter = function insertAfter(exist, add) {
 536         exist = this.index(exist);
 537
 538         var nodes = this.normalize(add, this.nodes[exist]).reverse();
 539         for (var _iterator7 = nodes, _isArray7 = Array.isArray(_iterator7), _i7 = 0, _iterator7 = _isArray7 ? _iterator7 : _iterator7[Symbol.iterator]();;) {
 540             var _ref7;
 541
 542             if (_isArray7) {
 543                 if (_i7 >= _iterator7.length) break;
 544                 _ref7 = _iterator7[_i7++];
 545             } else {
 546                 _i7 = _iterator7.next();
 547                 if (_i7.done) break;
 548                 _ref7 = _i7.value;
 549             }
 550
 551             var node = _ref7;
 552             this.nodes.splice(exist + 1, 0, node);
 553         }var index = void 0;
 554         for (var id in this.indexes) {
 555             index = this.indexes[id];
 556             if (exist < index) {
 557                 this.indexes[id] = index + nodes.length;
 558             }
 559         }
 560
 561         return this;
 562     };
 563
 564     /**
 565      * Removes node from the container and cleans the parent properties
 566      * from the node and its children.
 567      *
 568      * @param {Node|number} child - child or child’s index
 569      *
 570      * @return {Node} this node for methods chain
 571      *
 572      * @example
 573      * rule.nodes.length  //=> 5
 574      * rule.removeChild(decl);
 575      * rule.nodes.length  //=> 4
 576      * decl.parent        //=> undefined
 577      */
 578
 579
 580     Container.prototype.removeChild = function removeChild(child) {
 581         child = this.index(child);
 582         this.nodes[child].parent = undefined;
 583         this.nodes.splice(child, 1);
 584
 585         var index = void 0;
 586         for (var id in this.indexes) {
 587             index = this.indexes[id];
 588             if (index >= child) {
 589                 this.indexes[id] = index - 1;
 590             }
 591         }
 592
 593         return this;
 594     };
 595
 596     /**
 597      * Removes all children from the container
 598      * and cleans their parent properties.
 599      *
 600      * @return {Node} this node for methods chain
 601      *
 602      * @example
 603      * rule.removeAll();
 604      * rule.nodes.length //=> 0
 605      */
 606
 607
 608     Container.prototype.removeAll = function removeAll() {
 609         for (var _iterator8 = this.nodes, _isArray8 = Array.isArray(_iterator8), _i8 = 0, _iterator8 = _isArray8 ? _iterator8 : _iterator8[Symbol.iterator]();;) {
 610             var _ref8;
 611
 612             if (_isArray8) {
 613                 if (_i8 >= _iterator8.length) break;
 614                 _ref8 = _iterator8[_i8++];
 615             } else {
 616                 _i8 = _iterator8.next();
 617                 if (_i8.done) break;
 618                 _ref8 = _i8.value;
 619             }
 620
 621             var node = _ref8;
 622             node.parent = undefined;
 623         }this.nodes = [];
 624         return this;
 625     };
 626
 627     /**
 628      * Passes all declaration values within the container that match pattern
 629      * through callback, replacing those values with the returned result
 630      * of callback.
 631      *
 632      * This method is useful if you are using a custom unit or function
 633      * and need to iterate through all values.
 634      *
 635      * @param {string|RegExp} pattern      - replace pattern
 636      * @param {object} opts                - options to speed up the search
 637      * @param {string|string[]} opts.props - an array of property names
 638      * @param {string} opts.fast           - string that’s used
 639      *                                       to narrow down values and speed up
 640                                              the regexp search
 641      * @param {function|string} callback   - string to replace pattern
 642      *                                       or callback that returns a new
 643      *                                       value.
 644      *                                       The callback will receive
 645      *                                       the same arguments as those
 646      *                                       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     Container.prototype.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
 668             decl.value = decl.value.replace(pattern, callback);
 669         });
 670
 671         return this;
 672     };
 673
 674     /**
 675      * Returns `true` if callback returns `true`
 676      * for all of the container’s children.
 677      *
 678      * @param {childCondition} condition - iterator returns true or false.
 679      *
 680      * @return {boolean} is every child pass condition
 681      *
 682      * @example
 683      * const noPrefixes = rule.every(i => i.prop[0] !== '-');
 684      */
 685
 686
 687     Container.prototype.every = function every(condition) {
 688         return this.nodes.every(condition);
 689     };
 690
 691     /**
 692      * Returns `true` if callback returns `true` for (at least) one
 693      * of the container’s children.
 694      *
 695      * @param {childCondition} condition - iterator returns true or false.
 696      *
 697      * @return {boolean} is some child pass condition
 698      *
 699      * @example
 700      * const hasPrefix = rule.some(i => i.prop[0] === '-');
 701      */
 702
 703
 704     Container.prototype.some = function some(condition) {
 705         return this.nodes.some(condition);
 706     };
 707
 708     /**
 709      * Returns a `child`’s index within the {@link Container#nodes} array.
 710      *
 711      * @param {Node} child - child of the current container.
 712      *
 713      * @return {number} child index
 714      *
 715      * @example
 716      * rule.index( rule.nodes[2] ) //=> 2
 717      */
 718
 719
 720     Container.prototype.index = function index(child) {
 721         if (typeof child === 'number') {
 722             return child;
 723         } else {
 724             return this.nodes.indexOf(child);
 725         }
 726     };
 727
 728     /**
 729      * The container’s first child.
 730      *
 731      * @type {Node}
 732      *
 733      * @example
 734      * rule.first == rules.nodes[0];
 735      */
 736
 737
 738     Container.prototype.normalize = function normalize(nodes, sample) {
 739         var _this2 = this;
 740
 741         if (typeof nodes === 'string') {
 742             var parse = require('./parse');
 743             nodes = cleanSource(parse(nodes).nodes);
 744         } else if (Array.isArray(nodes)) {
 745             nodes = nodes.slice(0);
 746             for (var _iterator9 = nodes, _isArray9 = Array.isArray(_iterator9), _i9 = 0, _iterator9 = _isArray9 ? _iterator9 : _iterator9[Symbol.iterator]();;) {
 747                 var _ref9;
 748
 749                 if (_isArray9) {
 750                     if (_i9 >= _iterator9.length) break;
 751                     _ref9 = _iterator9[_i9++];
 752                 } else {
 753                     _i9 = _iterator9.next();
 754                     if (_i9.done) break;
 755                     _ref9 = _i9.value;
 756                 }
 757
 758                 var i = _ref9;
 759
 760                 if (i.parent) i.parent.removeChild(i, 'ignore');
 761             }
 762         } else if (nodes.type === 'root') {
 763             nodes = nodes.nodes.slice(0);
 764             for (var _iterator10 = nodes, _isArray10 = Array.isArray(_iterator10), _i11 = 0, _iterator10 = _isArray10 ? _iterator10 : _iterator10[Symbol.iterator]();;) {
 765                 var _ref10;
 766
 767                 if (_isArray10) {
 768                     if (_i11 >= _iterator10.length) break;
 769                     _ref10 = _iterator10[_i11++];
 770                 } else {
 771                     _i11 = _iterator10.next();
 772                     if (_i11.done) break;
 773                     _ref10 = _i11.value;
 774                 }
 775
 776                 var _i10 = _ref10;
 777
 778                 if (_i10.parent) _i10.parent.removeChild(_i10, 'ignore');
 779             }
 780         } else if (nodes.type) {
 781             nodes = [nodes];
 782         } else if (nodes.prop) {
 783             if (typeof nodes.value === 'undefined') {
 784                 throw new Error('Value field is missed in node creation');
 785             } else if (typeof nodes.value !== 'string') {
 786                 nodes.value = String(nodes.value);
 787             }
 788             nodes = [new _declaration2.default(nodes)];
 789         } else if (nodes.selector) {
 790             var Rule = require('./rule');
 791             nodes = [new Rule(nodes)];
 792         } else if (nodes.name) {
 793             var AtRule = require('./at-rule');
 794             nodes = [new AtRule(nodes)];
 795         } else if (nodes.text) {
 796             nodes = [new _comment2.default(nodes)];
 797         } else {
 798             throw new Error('Unknown node type in node creation');
 799         }
 800
 801         var processed = nodes.map(function (i) {
 802             if (typeof i.before !== 'function') i = _this2.rebuild(i);
 803
 804             if (i.parent) i.parent.removeChild(i);
 805             if (typeof i.raws.before === 'undefined') {
 806                 if (sample && typeof sample.raws.before !== 'undefined') {
 807                     i.raws.before = sample.raws.before.replace(/[^\s]/g, '');
 808                 }
 809             }
 810             i.parent = _this2;
 811             return i;
 812         });
 813
 814         return processed;
 815     };
 816
 817     Container.prototype.rebuild = function rebuild(node, parent) {
 818         var _this3 = this;
 819
 820         var fix = void 0;
 821         if (node.type === 'root') {
 822             var Root = require('./root');
 823             fix = new Root();
 824         } else if (node.type === 'atrule') {
 825             var AtRule = require('./at-rule');
 826             fix = new AtRule();
 827         } else if (node.type === 'rule') {
 828             var Rule = require('./rule');
 829             fix = new Rule();
 830         } else if (node.type === 'decl') {
 831             fix = new _declaration2.default();
 832         } else if (node.type === 'comment') {
 833             fix = new _comment2.default();
 834         }
 835
 836         for (var i in node) {
 837             if (i === 'nodes') {
 838                 fix.nodes = node.nodes.map(function (j) {
 839                     return _this3.rebuild(j, fix);
 840                 });
 841             } else if (i === 'parent' && parent) {
 842                 fix.parent = parent;
 843             } else if (node.hasOwnProperty(i)) {
 844                 fix[i] = node[i];
 845             }
 846         }
 847
 848         return fix;
 849     };
 850
 851     /**
 852      * @memberof Container#
 853      * @member {Node[]} nodes - an array containing the container’s children
 854      *
 855      * @example
 856      * const root = postcss.parse('a { color: black }');
 857      * root.nodes.length           //=> 1
 858      * root.nodes[0].selector      //=> 'a'
 859      * root.nodes[0].nodes[0].prop //=> 'color'
 860      */
 861
 862     _createClass(Container, [{
 863         key: 'first',
 864         get: function get() {
 865             if (!this.nodes) return undefined;
 866             return this.nodes[0];
 867         }
 868
 869         /**
 870          * The container’s last child.
 871          *
 872          * @type {Node}
 873          *
 874          * @example
 875          * rule.last == rule.nodes[rule.nodes.length - 1];
 876          */
 877
 878     }, {
 879         key: 'last',
 880         get: function get() {
 881             if (!this.nodes) return undefined;
 882             return this.nodes[this.nodes.length - 1];
 883         }
 884     }]);
 885
 886     return Container;
 887 }(_node2.default);
 888
 889 exports.default = Container;
 890
 891 /**
 892  * @callback childCondition
 893  * @param {Node} node    - container child
 894  * @param {number} index - child index
 895  * @param {Node[]} nodes - all container children
 896  * @return {boolean}
 897  */
 898
 899 /**
 900  * @callback childIterator
 901  * @param {Node} node    - container child
 902  * @param {number} index - child index
 903  * @return {false|undefined} returning `false` will break iteration
 904  */
 905
 906 module.exports = exports['default'];
 907 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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\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 ( let 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 = callback(child, i);\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        } else 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        } else {\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    /**\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        } else 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        } else {\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    /**\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        } else 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        } else {\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    /**\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\n     *                                       to narrow down values and speed up\n                                             the regexp search\n     * @param {function|string} callback   - string to replace pattern\n     *                                       or callback that returns a new\n     *                                       value.\n     *                                       The callback will receive\n     *                                       the same arguments as those\n     *                                       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        } else {\n            return this.nodes.indexOf(child);\n        }\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 ( typeof i.before !== 'function' ) i = this.rebuild(i);\n\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    rebuild(node, parent) {\n        let fix;\n        if ( node.type === 'root' ) {\n            let Root = require('./root');\n            fix = new Root();\n        } else if ( node.type === 'atrule' ) {\n            let AtRule = require('./at-rule');\n            fix = new AtRule();\n        } else if ( node.type === 'rule' ) {\n            let Rule = require('./rule');\n            fix = new Rule();\n        } else if ( node.type === 'decl' ) {\n            fix = new Declaration();\n        } else if ( node.type === 'comment' ) {\n            fix = new Comment();\n        }\n\n        for ( let i in node ) {\n            if ( i === 'nodes' ) {\n                fix.nodes = node.nodes.map( j => this.rebuild(j, fix) );\n            } else if ( i === 'parent' && parent ) {\n                fix.parent = parent;\n            } else if ( node.hasOwnProperty(i) ) {\n                fix[i] = node[i];\n            }\n        }\n\n        return fix;\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}\n\nexport default Container;\n\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"]}