node.js 51 KB

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