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

   1 'use strict';
   2
   3 exports.__esModule = true;
   4
   5 var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
   6
   7 var _cssSyntaxError = require('./css-syntax-error');
   8
   9 var _cssSyntaxError2 = _interopRequireDefault(_cssSyntaxError);
  10
  11 var _stringifier = require('./stringifier');
  12
  13 var _stringifier2 = _interopRequireDefault(_stringifier);
  14
  15 var _stringify = require('./stringify');
  16
  17 var _stringify2 = _interopRequireDefault(_stringify);
  18
  19 var _warnOnce = require('./warn-once');
  20
  21 var _warnOnce2 = _interopRequireDefault(_warnOnce);
  22
  23 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  24
  25 function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
  26
  27 var cloneNode = function cloneNode(obj, parent) {
  28     var cloned = new obj.constructor();
  29
  30     for (var i in obj) {
  31         if (!obj.hasOwnProperty(i)) continue;
  32         var value = obj[i];
  33         var type = typeof value === 'undefined' ? 'undefined' : _typeof(value);
  34
  35         if (i === 'parent' && type === 'object') {
  36             if (parent) cloned[i] = parent;
  37         } else if (i === 'source') {
  38             cloned[i] = value;
  39         } else if (value instanceof Array) {
  40             cloned[i] = value.map(function (j) {
  41                 return cloneNode(j, cloned);
  42             });
  43         } else {
  44             if (type === 'object' && value !== null) value = cloneNode(value);
  45             cloned[i] = value;
  46         }
  47     }
  48
  49     return cloned;
  50 };
  51
  52 /**
  53  * All node classes inherit the following common methods.
  54  *
  55  * @abstract
  56  */
  57
  58 var Node = function () {
  59
  60     /**
  61      * @param {object} [defaults] - value for node properties
  62      */
  63     function Node() {
  64         var defaults = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  65
  66         _classCallCheck(this, Node);
  67
  68         this.raws = {};
  69         if ((typeof defaults === 'undefined' ? 'undefined' : _typeof(defaults)) !== 'object' && typeof defaults !== 'undefined') {
  70             throw new Error('PostCSS nodes constructor accepts object, not ' + JSON.stringify(defaults));
  71         }
  72         for (var name in defaults) {
  73             this[name] = defaults[name];
  74         }
  75     }
  76
  77     /**
  78      * Returns a CssSyntaxError instance containing the original position
  79      * of the node in the source, showing line and column numbers and also
  80      * a small excerpt to facilitate debugging.
  81      *
  82      * If present, an input source map will be used to get the original position
  83      * of the source, even from a previous compilation step
  84      * (e.g., from Sass compilation).
  85      *
  86      * This method produces very useful error messages.
  87      *
  88      * @param {string} message     - error description
  89      * @param {object} [opts]      - options
  90      * @param {string} opts.plugin - plugin name that created this error.
  91      *                               PostCSS will set it automatically.
  92      * @param {string} opts.word   - a word inside a node’s string that should
  93      *                               be highlighted as the source of the error
  94      * @param {number} opts.index  - an index inside a node’s string that should
  95      *                               be highlighted as the source of the error
  96      *
  97      * @return {CssSyntaxError} error object to throw it
  98      *
  99      * @example
 100      * if ( !variables[name] ) {
 101      *   throw decl.error('Unknown variable ' + name, { word: name });
 102      *   // CssSyntaxError: postcss-vars:a.sass:4:3: Unknown variable $black
 103      *   //   color: $black
 104      *   // a
 105      *   //          ^
 106      *   //   background: white
 107      * }
 108      */
 109
 110
 111     Node.prototype.error = function error(message) {
 112         var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
 113
 114         if (this.source) {
 115             var pos = this.positionBy(opts);
 116             return this.source.input.error(message, pos.line, pos.column, opts);
 117         } else {
 118             return new _cssSyntaxError2.default(message);
 119         }
 120     };
 121
 122     /**
 123      * This method is provided as a convenience wrapper for {@link Result#warn}.
 124      *
 125      * @param {Result} result      - the {@link Result} instance
 126      *                               that will receive the warning
 127      * @param {string} text        - warning message
 128      * @param {object} [opts]      - options
 129      * @param {string} opts.plugin - plugin name that created this warning.
 130      *                               PostCSS will set it automatically.
 131      * @param {string} opts.word   - a word inside a node’s string that should
 132      *                               be highlighted as the source of the warning
 133      * @param {number} opts.index  - an index inside a node’s string that should
 134      *                               be highlighted as the source of the warning
 135      *
 136      * @return {Warning} created warning object
 137      *
 138      * @example
 139      * const plugin = postcss.plugin('postcss-deprecated', () => {
 140      *   return (root, result) => {
 141      *     root.walkDecls('bad', decl => {
 142      *       decl.warn(result, 'Deprecated property bad');
 143      *     });
 144      *   };
 145      * });
 146      */
 147
 148
 149     Node.prototype.warn = function warn(result, text, opts) {
 150         var data = { node: this };
 151         for (var i in opts) {
 152             data[i] = opts[i];
 153         }return result.warn(text, data);
 154     };
 155
 156     /**
 157      * Removes the node from its parent and cleans the parent properties
 158      * from the node and its children.
 159      *
 160      * @example
 161      * if ( decl.prop.match(/^-webkit-/) ) {
 162      *   decl.remove();
 163      * }
 164      *
 165      * @return {Node} node to make calls chain
 166      */
 167
 168
 169     Node.prototype.remove = function remove() {
 170         if (this.parent) {
 171             this.parent.removeChild(this);
 172         }
 173         this.parent = undefined;
 174         return this;
 175     };
 176
 177     /**
 178      * Returns a CSS string representing the node.
 179      *
 180      * @param {stringifier|syntax} [stringifier] - a syntax to use
 181      *                                             in string generation
 182      *
 183      * @return {string} CSS string of this node
 184      *
 185      * @example
 186      * postcss.rule({ selector: 'a' }).toString() //=> "a {}"
 187      */
 188
 189
 190     Node.prototype.toString = function toString() {
 191         var stringifier = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : _stringify2.default;
 192
 193         if (stringifier.stringify) stringifier = stringifier.stringify;
 194         var result = '';
 195         stringifier(this, function (i) {
 196             result += i;
 197         });
 198         return result;
 199     };
 200
 201     /**
 202      * Returns a clone of the node.
 203      *
 204      * The resulting cloned node and its (cloned) children will have
 205      * a clean parent and code style properties.
 206      *
 207      * @param {object} [overrides] - new properties to override in the clone.
 208      *
 209      * @example
 210      * const cloned = decl.clone({ prop: '-moz-' + decl.prop });
 211      * cloned.raws.before  //=> undefined
 212      * cloned.parent       //=> undefined
 213      * cloned.toString()   //=> -moz-transform: scale(0)
 214      *
 215      * @return {Node} clone of the node
 216      */
 217
 218
 219     Node.prototype.clone = function clone() {
 220         var overrides = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
 221
 222         var cloned = cloneNode(this);
 223         for (var name in overrides) {
 224             cloned[name] = overrides[name];
 225         }
 226         return cloned;
 227     };
 228
 229     /**
 230      * Shortcut to clone the node and insert the resulting cloned node
 231      * before the current node.
 232      *
 233      * @param {object} [overrides] - new properties to override in the clone.
 234      *
 235      * @example
 236      * decl.cloneBefore({ prop: '-moz-' + decl.prop });
 237      *
 238      * @return {Node} - new node
 239      */
 240
 241
 242     Node.prototype.cloneBefore = function cloneBefore() {
 243         var overrides = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
 244
 245         var cloned = this.clone(overrides);
 246         this.parent.insertBefore(this, cloned);
 247         return cloned;
 248     };
 249
 250     /**
 251      * Shortcut to clone the node and insert the resulting cloned node
 252      * after the current node.
 253      *
 254      * @param {object} [overrides] - new properties to override in the clone.
 255      *
 256      * @return {Node} - new node
 257      */
 258
 259
 260     Node.prototype.cloneAfter = function cloneAfter() {
 261         var overrides = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
 262
 263         var cloned = this.clone(overrides);
 264         this.parent.insertAfter(this, cloned);
 265         return cloned;
 266     };
 267
 268     /**
 269      * Inserts node(s) before the current node and removes the current node.
 270      *
 271      * @param {...Node} nodes - node(s) to replace current one
 272      *
 273      * @example
 274      * if ( atrule.name == 'mixin' ) {
 275      *   atrule.replaceWith(mixinRules[atrule.params]);
 276      * }
 277      *
 278      * @return {Node} current node to methods chain
 279      */
 280
 281
 282     Node.prototype.replaceWith = function replaceWith() {
 283         if (this.parent) {
 284             for (var _len = arguments.length, nodes = Array(_len), _key = 0; _key < _len; _key++) {
 285                 nodes[_key] = arguments[_key];
 286             }
 287
 288             for (var _iterator = nodes, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
 289                 var _ref;
 290
 291                 if (_isArray) {
 292                     if (_i >= _iterator.length) break;
 293                     _ref = _iterator[_i++];
 294                 } else {
 295                     _i = _iterator.next();
 296                     if (_i.done) break;
 297                     _ref = _i.value;
 298                 }
 299
 300                 var node = _ref;
 301
 302                 this.parent.insertBefore(this, node);
 303             }
 304
 305             this.remove();
 306         }
 307
 308         return this;
 309     };
 310
 311     Node.prototype.moveTo = function moveTo(newParent) {
 312         (0, _warnOnce2.default)('Node#moveTo was deprecated. Use Container#append.');
 313         this.cleanRaws(this.root() === newParent.root());
 314         this.remove();
 315         newParent.append(this);
 316         return this;
 317     };
 318
 319     Node.prototype.moveBefore = function moveBefore(otherNode) {
 320         (0, _warnOnce2.default)('Node#moveBefore was deprecated. Use Node#before.');
 321         this.cleanRaws(this.root() === otherNode.root());
 322         this.remove();
 323         otherNode.parent.insertBefore(otherNode, this);
 324         return this;
 325     };
 326
 327     Node.prototype.moveAfter = function moveAfter(otherNode) {
 328         (0, _warnOnce2.default)('Node#moveAfter was deprecated. Use Node#after.');
 329         this.cleanRaws(this.root() === otherNode.root());
 330         this.remove();
 331         otherNode.parent.insertAfter(otherNode, this);
 332         return this;
 333     };
 334
 335     /**
 336      * Returns the next child of the node’s parent.
 337      * Returns `undefined` if the current node is the last child.
 338      *
 339      * @return {Node|undefined} next node
 340      *
 341      * @example
 342      * if ( comment.text === 'delete next' ) {
 343      *   const next = comment.next();
 344      *   if ( next ) {
 345      *     next.remove();
 346      *   }
 347      * }
 348      */
 349
 350
 351     Node.prototype.next = function next() {
 352         if (!this.parent) return undefined;
 353         var index = this.parent.index(this);
 354         return this.parent.nodes[index + 1];
 355     };
 356
 357     /**
 358      * Returns the previous child of the node’s parent.
 359      * Returns `undefined` if the current node is the first child.
 360      *
 361      * @return {Node|undefined} previous node
 362      *
 363      * @example
 364      * const annotation = decl.prev();
 365      * if ( annotation.type == 'comment' ) {
 366      *  readAnnotation(annotation.text);
 367      * }
 368      */
 369
 370
 371     Node.prototype.prev = function prev() {
 372         if (!this.parent) return undefined;
 373         var index = this.parent.index(this);
 374         return this.parent.nodes[index - 1];
 375     };
 376
 377     /**
 378      * Insert new node before current node to current node’s parent.
 379      *
 380      * Just alias for `node.parent.insertBefore(node, add)`.
 381      *
 382      * @param {Node|object|string|Node[]} add - new node
 383      *
 384      * @return {Node} this node for methods chain.
 385      *
 386      * @example
 387      * decl.before('content: ""');
 388      */
 389
 390
 391     Node.prototype.before = function before(add) {
 392         this.parent.insertBefore(this, add);
 393         return this;
 394     };
 395
 396     /**
 397      * Insert new node after current node to current node’s parent.
 398      *
 399      * Just alias for `node.parent.insertAfter(node, add)`.
 400      *
 401      * @param {Node|object|string|Node[]} add - new node
 402      *
 403      * @return {Node} this node for methods chain.
 404      *
 405      * @example
 406      * decl.after('color: black');
 407      */
 408
 409
 410     Node.prototype.after = function after(add) {
 411         this.parent.insertAfter(this, add);
 412         return this;
 413     };
 414
 415     Node.prototype.toJSON = function toJSON() {
 416         var fixed = {};
 417
 418         for (var name in this) {
 419             if (!this.hasOwnProperty(name)) continue;
 420             if (name === 'parent') continue;
 421             var value = this[name];
 422
 423             if (value instanceof Array) {
 424                 fixed[name] = value.map(function (i) {
 425                     if ((typeof i === 'undefined' ? 'undefined' : _typeof(i)) === 'object' && i.toJSON) {
 426                         return i.toJSON();
 427                     } else {
 428                         return i;
 429                     }
 430                 });
 431             } else if ((typeof value === 'undefined' ? 'undefined' : _typeof(value)) === 'object' && value.toJSON) {
 432                 fixed[name] = value.toJSON();
 433             } else {
 434                 fixed[name] = value;
 435             }
 436         }
 437
 438         return fixed;
 439     };
 440
 441     /**
 442      * Returns a {@link Node#raws} value. If the node is missing
 443      * the code style property (because the node was manually built or cloned),
 444      * PostCSS will try to autodetect the code style property by looking
 445      * at other nodes in the tree.
 446      *
 447      * @param {string} prop          - name of code style property
 448      * @param {string} [defaultType] - name of default value, it can be missed
 449      *                                 if the value is the same as prop
 450      *
 451      * @example
 452      * const root = postcss.parse('a { background: white }');
 453      * root.nodes[0].append({ prop: 'color', value: 'black' });
 454      * root.nodes[0].nodes[1].raws.before   //=> undefined
 455      * root.nodes[0].nodes[1].raw('before') //=> ' '
 456      *
 457      * @return {string} code style value
 458      */
 459
 460
 461     Node.prototype.raw = function raw(prop, defaultType) {
 462         var str = new _stringifier2.default();
 463         return str.raw(this, prop, defaultType);
 464     };
 465
 466     /**
 467      * Finds the Root instance of the node’s tree.
 468      *
 469      * @example
 470      * root.nodes[0].nodes[0].root() === root
 471      *
 472      * @return {Root} root parent
 473      */
 474
 475
 476     Node.prototype.root = function root() {
 477         var result = this;
 478         while (result.parent) {
 479             result = result.parent;
 480         }return result;
 481     };
 482
 483     Node.prototype.cleanRaws = function cleanRaws(keepBetween) {
 484         delete this.raws.before;
 485         delete this.raws.after;
 486         if (!keepBetween) delete this.raws.between;
 487     };
 488
 489     Node.prototype.positionInside = function positionInside(index) {
 490         var string = this.toString();
 491         var column = this.source.start.column;
 492         var line = this.source.start.line;
 493
 494         for (var i = 0; i < index; i++) {
 495             if (string[i] === '\n') {
 496                 column = 1;
 497                 line += 1;
 498             } else {
 499                 column += 1;
 500             }
 501         }
 502
 503         return { line: line, column: column };
 504     };
 505
 506     Node.prototype.positionBy = function positionBy(opts) {
 507         var pos = this.source.start;
 508         if (opts.index) {
 509             pos = this.positionInside(opts.index);
 510         } else if (opts.word) {
 511             var index = this.toString().indexOf(opts.word);
 512             if (index !== -1) pos = this.positionInside(index);
 513         }
 514         return pos;
 515     };
 516
 517     /**
 518      * @memberof Node#
 519      * @member {string} type - String representing the node’s type.
 520      *                         Possible values are `root`, `atrule`, `rule`,
 521      *                         `decl`, or `comment`.
 522      *
 523      * @example
 524      * postcss.decl({ prop: 'color', value: 'black' }).type //=> 'decl'
 525      */
 526
 527     /**
 528      * @memberof Node#
 529      * @member {Container} parent - the node’s parent node.
 530      *
 531      * @example
 532      * root.nodes[0].parent == root;
 533      */
 534
 535     /**
 536      * @memberof Node#
 537      * @member {source} source - the input source of the node
 538      *
 539      * The property is used in source map generation.
 540      *
 541      * If you create a node manually (e.g., with `postcss.decl()`),
 542      * that node will not have a `source` property and will be absent
 543      * from the source map. For this reason, the plugin developer should
 544      * consider cloning nodes to create new ones (in which case the new node’s
 545      * source will reference the original, cloned node) or setting
 546      * the `source` property manually.
 547      *
 548      * ```js
 549      * // Bad
 550      * const prefixed = postcss.decl({
 551      *   prop: '-moz-' + decl.prop,
 552      *   value: decl.value
 553      * });
 554      *
 555      * // Good
 556      * const prefixed = decl.clone({ prop: '-moz-' + decl.prop });
 557      * ```
 558      *
 559      * ```js
 560      * if ( atrule.name == 'add-link' ) {
 561      *   const rule = postcss.rule({ selector: 'a', source: atrule.source });
 562      *   atrule.parent.insertBefore(atrule, rule);
 563      * }
 564      * ```
 565      *
 566      * @example
 567      * decl.source.input.from //=> '/home/ai/a.sass'
 568      * decl.source.start      //=> { line: 10, column: 2 }
 569      * decl.source.end        //=> { line: 10, column: 12 }
 570      */
 571
 572     /**
 573      * @memberof Node#
 574      * @member {object} raws - Information to generate byte-to-byte equal
 575      *                         node string as it was in the origin input.
 576      *
 577      * Every parser saves its own properties,
 578      * but the default CSS parser uses:
 579      *
 580      * * `before`: the space symbols before the node. It also stores `*`
 581      *   and `_` symbols before the declaration (IE hack).
 582      * * `after`: the space symbols after the last child of the node
 583      *   to the end of the node.
 584      * * `between`: the symbols between the property and value
 585      *   for declarations, selector and `{` for rules, or last parameter
 586      *   and `{` for at-rules.
 587      * * `semicolon`: contains true if the last child has
 588      *   an (optional) semicolon.
 589      * * `afterName`: the space between the at-rule name and its parameters.
 590      * * `left`: the space symbols between `/*` and the comment’s text.
 591      * * `right`: the space symbols between the comment’s text
 592      *   and <code>*&#47;</code>.
 593      * * `important`: the content of the important statement,
 594      *   if it is not just `!important`.
 595      *
 596      * PostCSS cleans selectors, declaration values and at-rule parameters
 597      * from comments and extra spaces, but it stores origin content in raws
 598      * properties. As such, if you don’t change a declaration’s value,
 599      * PostCSS will use the raw value with comments.
 600      *
 601      * @example
 602      * const root = postcss.parse('a {\n  color:black\n}')
 603      * root.first.first.raws //=> { before: '\n  ', between: ':' }
 604      */
 605
 606     return Node;
 607 }();
 608
 609 exports.default = Node;
 610
 611 /**
 612  * @typedef {object} position
 613  * @property {number} line   - source line in file
 614  * @property {number} column - source column in file
 615  */
 616
 617 /**
 618  * @typedef {object} source
 619  * @property {Input} input    - {@link Input} with input file
 620  * @property {position} start - The starting position of the node’s source
 621  * @property {position} end   - The ending position of the node’s source
 622  */
 623
 624 module.exports = exports['default'];
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CssSyntaxError from './css-syntax-error';\nimport Stringifier    from './stringifier';\nimport stringify      from './stringify';\nimport warnOnce       from './warn-once';\n\nlet cloneNode = function (obj, parent) {\n    let cloned = new obj.constructor();\n\n    for ( let i in obj ) {\n        if ( !obj.hasOwnProperty(i) ) continue;\n        let value = obj[i];\n        let type  = typeof value;\n\n        if ( i === 'parent' && type === 'object' ) {\n            if (parent) cloned[i] = parent;\n        } else if ( i === 'source' ) {\n            cloned[i] = value;\n        } else if ( value instanceof Array ) {\n            cloned[i] = value.map( j => cloneNode(j, cloned) );\n        } else {\n            if ( type === 'object' && value !== null ) value = cloneNode(value);\n            cloned[i] = value;\n        }\n    }\n\n    return cloned;\n};\n\n/**\n * All node classes inherit the following common methods.\n *\n * @abstract\n */\nclass Node {\n\n    /**\n     * @param {object} [defaults] - value for node properties\n     */\n    constructor(defaults = { }) {\n        this.raws = { };\n        if ( typeof defaults !== 'object' && typeof defaults !== 'undefined' ) {\n            throw new Error(\n                'PostCSS nodes constructor accepts object, not ' +\n                JSON.stringify(defaults));\n        }\n        for ( let name in defaults ) {\n            this[name] = defaults[name];\n        }\n    }\n\n    /**\n     * Returns a CssSyntaxError instance containing the original position\n     * of the node in the source, showing line and column numbers and also\n     * a small excerpt to facilitate debugging.\n     *\n     * If present, an input source map will be used to get the original position\n     * of the source, even from a previous compilation step\n     * (e.g., from Sass compilation).\n     *\n     * This method produces very useful error messages.\n     *\n     * @param {string} message     - error description\n     * @param {object} [opts]      - options\n     * @param {string} opts.plugin - plugin name that created this error.\n     *                               PostCSS will set it automatically.\n     * @param {string} opts.word   - a word inside a node’s string that should\n     *                               be highlighted as the source of the error\n     * @param {number} opts.index  - an index inside a node’s string that should\n     *                               be highlighted as the source of the error\n     *\n     * @return {CssSyntaxError} error object to throw it\n     *\n     * @example\n     * if ( !variables[name] ) {\n     *   throw decl.error('Unknown variable ' + name, { word: name });\n     *   // CssSyntaxError: postcss-vars:a.sass:4:3: Unknown variable $black\n     *   //   color: $black\n     *   // a\n     *   //          ^\n     *   //   background: white\n     * }\n     */\n    error(message, opts = { }) {\n        if ( this.source ) {\n            let pos = this.positionBy(opts);\n            return this.source.input.error(message, pos.line, pos.column, opts);\n        } else {\n            return new CssSyntaxError(message);\n        }\n    }\n\n    /**\n     * This method is provided as a convenience wrapper for {@link Result#warn}.\n     *\n     * @param {Result} result      - the {@link Result} instance\n     *                               that will receive the warning\n     * @param {string} text        - warning message\n     * @param {object} [opts]      - options\n     * @param {string} opts.plugin - plugin name that created this warning.\n     *                               PostCSS will set it automatically.\n     * @param {string} opts.word   - a word inside a node’s string that should\n     *                               be highlighted as the source of the warning\n     * @param {number} opts.index  - an index inside a node’s string that should\n     *                               be highlighted as the source of the warning\n     *\n     * @return {Warning} created warning object\n     *\n     * @example\n     * const plugin = postcss.plugin('postcss-deprecated', () => {\n     *   return (root, result) => {\n     *     root.walkDecls('bad', decl => {\n     *       decl.warn(result, 'Deprecated property bad');\n     *     });\n     *   };\n     * });\n     */\n    warn(result, text, opts) {\n        let data = { node: this };\n        for ( let i in opts ) data[i] = opts[i];\n        return result.warn(text, data);\n    }\n\n    /**\n     * Removes the node from its parent and cleans the parent properties\n     * from the node and its children.\n     *\n     * @example\n     * if ( decl.prop.match(/^-webkit-/) ) {\n     *   decl.remove();\n     * }\n     *\n     * @return {Node} node to make calls chain\n     */\n    remove() {\n        if ( this.parent ) {\n            this.parent.removeChild(this);\n        }\n        this.parent = undefined;\n        return this;\n    }\n\n    /**\n     * Returns a CSS string representing the node.\n     *\n     * @param {stringifier|syntax} [stringifier] - a syntax to use\n     *                                             in string generation\n     *\n     * @return {string} CSS string of this node\n     *\n     * @example\n     * postcss.rule({ selector: 'a' }).toString() //=> \"a {}\"\n     */\n    toString(stringifier = stringify) {\n        if ( stringifier.stringify ) stringifier = stringifier.stringify;\n        let result  = '';\n        stringifier(this, i => {\n            result += i;\n        });\n        return result;\n    }\n\n    /**\n     * Returns a clone of the node.\n     *\n     * The resulting cloned node and its (cloned) children will have\n     * a clean parent and code style properties.\n     *\n     * @param {object} [overrides] - new properties to override in the clone.\n     *\n     * @example\n     * const cloned = decl.clone({ prop: '-moz-' + decl.prop });\n     * cloned.raws.before  //=> undefined\n     * cloned.parent       //=> undefined\n     * cloned.toString()   //=> -moz-transform: scale(0)\n     *\n     * @return {Node} clone of the node\n     */\n    clone(overrides = { }) {\n        let cloned = cloneNode(this);\n        for ( let name in overrides ) {\n            cloned[name] = overrides[name];\n        }\n        return cloned;\n    }\n\n    /**\n     * Shortcut to clone the node and insert the resulting cloned node\n     * before the current node.\n     *\n     * @param {object} [overrides] - new properties to override in the clone.\n     *\n     * @example\n     * decl.cloneBefore({ prop: '-moz-' + decl.prop });\n     *\n     * @return {Node} - new node\n     */\n    cloneBefore(overrides = { }) {\n        let cloned = this.clone(overrides);\n        this.parent.insertBefore(this, cloned);\n        return cloned;\n    }\n\n    /**\n     * Shortcut to clone the node and insert the resulting cloned node\n     * after the current node.\n     *\n     * @param {object} [overrides] - new properties to override in the clone.\n     *\n     * @return {Node} - new node\n     */\n    cloneAfter(overrides = { }) {\n        let cloned = this.clone(overrides);\n        this.parent.insertAfter(this, cloned);\n        return cloned;\n    }\n\n    /**\n     * Inserts node(s) before the current node and removes the current node.\n     *\n     * @param {...Node} nodes - node(s) to replace current one\n     *\n     * @example\n     * if ( atrule.name == 'mixin' ) {\n     *   atrule.replaceWith(mixinRules[atrule.params]);\n     * }\n     *\n     * @return {Node} current node to methods chain\n     */\n    replaceWith(...nodes) {\n        if (this.parent) {\n            for (let node of nodes) {\n                this.parent.insertBefore(this, node);\n            }\n\n            this.remove();\n        }\n\n        return this;\n    }\n\n    moveTo(newParent) {\n        warnOnce('Node#moveTo was deprecated. Use Container#append.');\n        this.cleanRaws(this.root() === newParent.root());\n        this.remove();\n        newParent.append(this);\n        return this;\n    }\n\n    moveBefore(otherNode) {\n        warnOnce('Node#moveBefore was deprecated. Use Node#before.');\n        this.cleanRaws(this.root() === otherNode.root());\n        this.remove();\n        otherNode.parent.insertBefore(otherNode, this);\n        return this;\n    }\n\n    moveAfter(otherNode) {\n        warnOnce('Node#moveAfter was deprecated. Use Node#after.');\n        this.cleanRaws(this.root() === otherNode.root());\n        this.remove();\n        otherNode.parent.insertAfter(otherNode, this);\n        return this;\n    }\n\n    /**\n     * Returns the next child of the node’s parent.\n     * Returns `undefined` if the current node is the last child.\n     *\n     * @return {Node|undefined} next node\n     *\n     * @example\n     * if ( comment.text === 'delete next' ) {\n     *   const next = comment.next();\n     *   if ( next ) {\n     *     next.remove();\n     *   }\n     * }\n     */\n    next() {\n        if ( !this.parent ) return undefined;\n        let index = this.parent.index(this);\n        return this.parent.nodes[index + 1];\n    }\n\n    /**\n     * Returns the previous child of the node’s parent.\n     * Returns `undefined` if the current node is the first child.\n     *\n     * @return {Node|undefined} previous node\n     *\n     * @example\n     * const annotation = decl.prev();\n     * if ( annotation.type == 'comment' ) {\n     *  readAnnotation(annotation.text);\n     * }\n     */\n    prev() {\n        if ( !this.parent ) return undefined;\n        let index = this.parent.index(this);\n        return this.parent.nodes[index - 1];\n    }\n\n    /**\n     * Insert new node before current node to current node’s parent.\n     *\n     * Just alias for `node.parent.insertBefore(node, add)`.\n     *\n     * @param {Node|object|string|Node[]} add - new node\n     *\n     * @return {Node} this node for methods chain.\n     *\n     * @example\n     * decl.before('content: \"\"');\n     */\n    before(add) {\n        this.parent.insertBefore(this, add);\n        return this;\n    }\n\n    /**\n     * Insert new node after current node to current node’s parent.\n     *\n     * Just alias for `node.parent.insertAfter(node, add)`.\n     *\n     * @param {Node|object|string|Node[]} add - new node\n     *\n     * @return {Node} this node for methods chain.\n     *\n     * @example\n     * decl.after('color: black');\n     */\n    after(add) {\n        this.parent.insertAfter(this, add);\n        return this;\n    }\n\n    toJSON() {\n        let fixed = { };\n\n        for ( let name in this ) {\n            if ( !this.hasOwnProperty(name) ) continue;\n            if ( name === 'parent' ) continue;\n            let value = this[name];\n\n            if ( value instanceof Array ) {\n                fixed[name] = value.map( i => {\n                    if ( typeof i === 'object' && i.toJSON ) {\n                        return i.toJSON();\n                    } else {\n                        return i;\n                    }\n                });\n            } else if ( typeof value === 'object' && value.toJSON ) {\n                fixed[name] = value.toJSON();\n            } else {\n                fixed[name] = value;\n            }\n        }\n\n        return fixed;\n    }\n\n    /**\n     * Returns a {@link Node#raws} value. If the node is missing\n     * the code style property (because the node was manually built or cloned),\n     * PostCSS will try to autodetect the code style property by looking\n     * at other nodes in the tree.\n     *\n     * @param {string} prop          - name of code style property\n     * @param {string} [defaultType] - name of default value, it can be missed\n     *                                 if the value is the same as prop\n     *\n     * @example\n     * const root = postcss.parse('a { background: white }');\n     * root.nodes[0].append({ prop: 'color', value: 'black' });\n     * root.nodes[0].nodes[1].raws.before   //=> undefined\n     * root.nodes[0].nodes[1].raw('before') //=> ' '\n     *\n     * @return {string} code style value\n     */\n    raw(prop, defaultType) {\n        let str = new Stringifier();\n        return str.raw(this, prop, defaultType);\n    }\n\n    /**\n     * Finds the Root instance of the node’s tree.\n     *\n     * @example\n     * root.nodes[0].nodes[0].root() === root\n     *\n     * @return {Root} root parent\n     */\n    root() {\n        let result = this;\n        while ( result.parent ) result = result.parent;\n        return result;\n    }\n\n    cleanRaws(keepBetween) {\n        delete this.raws.before;\n        delete this.raws.after;\n        if ( !keepBetween ) delete this.raws.between;\n    }\n\n    positionInside(index) {\n        let string = this.toString();\n        let column = this.source.start.column;\n        let line   = this.source.start.line;\n\n        for ( let i = 0; i < index; i++ ) {\n            if ( string[i] === '\\n' ) {\n                column = 1;\n                line  += 1;\n            } else {\n                column += 1;\n            }\n        }\n\n        return { line, column };\n    }\n\n    positionBy(opts) {\n        let pos = this.source.start;\n        if ( opts.index ) {\n            pos = this.positionInside(opts.index);\n        } else if ( opts.word ) {\n            let index = this.toString().indexOf(opts.word);\n            if ( index !== -1 ) pos = this.positionInside(index);\n        }\n        return pos;\n    }\n\n    /**\n     * @memberof Node#\n     * @member {string} type - String representing the node’s type.\n     *                         Possible values are `root`, `atrule`, `rule`,\n     *                         `decl`, or `comment`.\n     *\n     * @example\n     * postcss.decl({ prop: 'color', value: 'black' }).type //=> 'decl'\n     */\n\n    /**\n     * @memberof Node#\n     * @member {Container} parent - the node’s parent node.\n     *\n     * @example\n     * root.nodes[0].parent == root;\n     */\n\n    /**\n     * @memberof Node#\n     * @member {source} source - the input source of the node\n     *\n     * The property is used in source map generation.\n     *\n     * If you create a node manually (e.g., with `postcss.decl()`),\n     * that node will not have a `source` property and will be absent\n     * from the source map. For this reason, the plugin developer should\n     * consider cloning nodes to create new ones (in which case the new node’s\n     * source will reference the original, cloned node) or setting\n     * the `source` property manually.\n     *\n     * ```js\n     * // Bad\n     * const prefixed = postcss.decl({\n     *   prop: '-moz-' + decl.prop,\n     *   value: decl.value\n     * });\n     *\n     * // Good\n     * const prefixed = decl.clone({ prop: '-moz-' + decl.prop });\n     * ```\n     *\n     * ```js\n     * if ( atrule.name == 'add-link' ) {\n     *   const rule = postcss.rule({ selector: 'a', source: atrule.source });\n     *   atrule.parent.insertBefore(atrule, rule);\n     * }\n     * ```\n     *\n     * @example\n     * decl.source.input.from //=> '/home/ai/a.sass'\n     * decl.source.start      //=> { line: 10, column: 2 }\n     * decl.source.end        //=> { line: 10, column: 12 }\n     */\n\n    /**\n     * @memberof Node#\n     * @member {object} raws - Information to generate byte-to-byte equal\n     *                         node string as it was in the origin input.\n     *\n     * Every parser saves its own properties,\n     * but the default CSS parser uses:\n     *\n     * * `before`: the space symbols before the node. It also stores `*`\n     *   and `_` symbols before the declaration (IE hack).\n     * * `after`: the space symbols after the last child of the node\n     *   to the end of the node.\n     * * `between`: the symbols between the property and value\n     *   for declarations, selector and `{` for rules, or last parameter\n     *   and `{` for at-rules.\n     * * `semicolon`: contains true if the last child has\n     *   an (optional) semicolon.\n     * * `afterName`: the space between the at-rule name and its parameters.\n     * * `left`: the space symbols between `/*` and the comment’s text.\n     * * `right`: the space symbols between the comment’s text\n     *   and <code>*&#47;</code>.\n     * * `important`: the content of the important statement,\n     *   if it is not just `!important`.\n     *\n     * PostCSS cleans selectors, declaration values and at-rule parameters\n     * from comments and extra spaces, but it stores origin content in raws\n     * properties. As such, if you don’t change a declaration’s value,\n     * PostCSS will use the raw value with comments.\n     *\n     * @example\n     * const root = postcss.parse('a {\\n  color:black\\n}')\n     * root.first.first.raws //=> { before: '\\n  ', between: ':' }\n     */\n\n}\n\nexport default Node;\n\n/**\n * @typedef {object} position\n * @property {number} line   - source line in file\n * @property {number} column - source column in file\n */\n\n/**\n * @typedef {object} source\n * @property {Input} input    - {@link Input} with input file\n * @property {position} start - The starting position of the node’s source\n * @property {position} end   - The ending position of the node’s source\n */\n"]}