node.js 55 KB

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