source: trip-planner-front/node_modules/postcss/lib/container.d.ts@ 76712b2

Last change on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1import Node, { ChildNode, NodeProps, ChildProps } from './node.js'
2import Declaration from './declaration.js'
3import Comment from './comment.js'
4import AtRule from './at-rule.js'
5import Rule from './rule.js'
6
7interface ValueOptions {
8 /**
9 * An array of property names.
10 */
11 props?: string[]
12
13 /**
14 * String that’s used to narrow down values and speed up the regexp search.
15 */
16 fast?: string
17}
18
19export interface ContainerProps extends NodeProps {
20 nodes?: (ChildNode | ChildProps)[]
21}
22
23/**
24 * The `Root`, `AtRule`, and `Rule` container nodes
25 * inherit some common methods to help work with their children.
26 *
27 * Note that all containers can store any content. If you write a rule inside
28 * a rule, PostCSS will parse it.
29 */
30export default abstract class Container<
31 Child extends Node = ChildNode
32> extends Node {
33 /**
34 * An array containing the container’s children.
35 *
36 * ```js
37 * const root = postcss.parse('a { color: black }')
38 * root.nodes.length //=> 1
39 * root.nodes[0].selector //=> 'a'
40 * root.nodes[0].nodes[0].prop //=> 'color'
41 * ```
42 */
43 nodes: Child[]
44
45 /**
46 * The container’s first child.
47 *
48 * ```js
49 * rule.first === rules.nodes[0]
50 * ```
51 */
52 get first(): Child | undefined
53
54 /**
55 * The container’s last child.
56 *
57 * ```js
58 * rule.last === rule.nodes[rule.nodes.length - 1]
59 * ```
60 */
61 get last(): Child | undefined
62
63 /**
64 * Iterates through the container’s immediate children,
65 * calling `callback` for each child.
66 *
67 * Returning `false` in the callback will break iteration.
68 *
69 * This method only iterates through the container’s immediate children.
70 * If you need to recursively iterate through all the container’s descendant
71 * nodes, use `Container#walk`.
72 *
73 * Unlike the for `{}`-cycle or `Array#forEach` this iterator is safe
74 * if you are mutating the array of child nodes during iteration.
75 * PostCSS will adjust the current index to match the mutations.
76 *
77 * ```js
78 * const root = postcss.parse('a { color: black; z-index: 1 }')
79 * const rule = root.first
80 *
81 * for (const decl of rule.nodes) {
82 * decl.cloneBefore({ prop: '-webkit-' + decl.prop })
83 * // Cycle will be infinite, because cloneBefore moves the current node
84 * // to the next index
85 * }
86 *
87 * rule.each(decl => {
88 * decl.cloneBefore({ prop: '-webkit-' + decl.prop })
89 * // Will be executed only for color and z-index
90 * })
91 * ```
92 *
93 * @param callback Iterator receives each node and index.
94 * @return Returns `false` if iteration was broke.
95 */
96 each(
97 callback: (node: Child, index: number) => false | void
98 ): false | undefined
99
100 /**
101 * Traverses the container’s descendant nodes, calling callback
102 * for each node.
103 *
104 * Like container.each(), this method is safe to use
105 * if you are mutating arrays during iteration.
106 *
107 * If you only need to iterate through the container’s immediate children,
108 * use `Container#each`.
109 *
110 * ```js
111 * root.walk(node => {
112 * // Traverses all descendant nodes.
113 * })
114 * ```
115 *
116 * @param callback Iterator receives each node and index.
117 * @return Returns `false` if iteration was broke.
118 */
119 walk(
120 callback: (node: ChildNode, index: number) => false | void
121 ): false | undefined
122
123 /**
124 * Traverses the container’s descendant nodes, calling callback
125 * for each declaration node.
126 *
127 * If you pass a filter, iteration will only happen over declarations
128 * with matching properties.
129 *
130 * ```js
131 * root.walkDecls(decl => {
132 * checkPropertySupport(decl.prop)
133 * })
134 *
135 * root.walkDecls('border-radius', decl => {
136 * decl.remove()
137 * })
138 *
139 * root.walkDecls(/^background/, decl => {
140 * decl.value = takeFirstColorFromGradient(decl.value)
141 * })
142 * ```
143 *
144 * Like `Container#each`, this method is safe
145 * to use if you are mutating arrays during iteration.
146 *
147 * @param prop String or regular expression to filter declarations
148 * by property name.
149 * @param callback Iterator receives each node and index.
150 * @return Returns `false` if iteration was broke.
151 */
152 walkDecls(
153 propFilter: string | RegExp,
154 callback: (decl: Declaration, index: number) => false | void
155 ): false | undefined
156 walkDecls(
157 callback: (decl: Declaration, index: number) => false | void
158 ): false | undefined
159
160 /**
161 * Traverses the container’s descendant nodes, calling callback
162 * for each rule node.
163 *
164 * If you pass a filter, iteration will only happen over rules
165 * with matching selectors.
166 *
167 * Like `Container#each`, this method is safe
168 * to use if you are mutating arrays during iteration.
169 *
170 * ```js
171 * const selectors = []
172 * root.walkRules(rule => {
173 * selectors.push(rule.selector)
174 * })
175 * console.log(`Your CSS uses ${ selectors.length } selectors`)
176 * ```
177 *
178 * @param selector String or regular expression to filter rules by selector.
179 * @param callback Iterator receives each node and index.
180 * @return Returns `false` if iteration was broke.
181 */
182 walkRules(
183 selectorFilter: string | RegExp,
184 callback: (atRule: Rule, index: number) => false | void
185 ): false | undefined
186 walkRules(
187 callback: (atRule: Rule, index: number) => false | void
188 ): false | undefined
189
190 /**
191 * Traverses the container’s descendant nodes, calling callback
192 * for each at-rule node.
193 *
194 * If you pass a filter, iteration will only happen over at-rules
195 * that have matching names.
196 *
197 * Like `Container#each`, this method is safe
198 * to use if you are mutating arrays during iteration.
199 *
200 * ```js
201 * root.walkAtRules(rule => {
202 * if (isOld(rule.name)) rule.remove()
203 * })
204 *
205 * let first = false
206 * root.walkAtRules('charset', rule => {
207 * if (!first) {
208 * first = true
209 * } else {
210 * rule.remove()
211 * }
212 * })
213 * ```
214 *
215 * @param name String or regular expression to filter at-rules by name.
216 * @param callback Iterator receives each node and index.
217 * @return Returns `false` if iteration was broke.
218 */
219 walkAtRules(
220 nameFilter: string | RegExp,
221 callback: (atRule: AtRule, index: number) => false | void
222 ): false | undefined
223 walkAtRules(
224 callback: (atRule: AtRule, index: number) => false | void
225 ): false | undefined
226
227 /**
228 * Traverses the container’s descendant nodes, calling callback
229 * for each comment node.
230 *
231 * Like `Container#each`, this method is safe
232 * to use if you are mutating arrays during iteration.
233 *
234 * ```js
235 * root.walkComments(comment => {
236 * comment.remove()
237 * })
238 * ```
239 *
240 * @param callback Iterator receives each node and index.
241 * @return Returns `false` if iteration was broke.
242 */
243
244 walkComments(
245 callback: (comment: Comment, indexed: number) => false | void
246 ): false | undefined
247 walkComments(
248 callback: (comment: Comment, indexed: number) => false | void
249 ): false | undefined
250
251 /**
252 * Inserts new nodes to the end of the container.
253 *
254 * ```js
255 * const decl1 = new Declaration({ prop: 'color', value: 'black' })
256 * const decl2 = new Declaration({ prop: 'background-color', value: 'white' })
257 * rule.append(decl1, decl2)
258 *
259 * root.append({ name: 'charset', params: '"UTF-8"' }) // at-rule
260 * root.append({ selector: 'a' }) // rule
261 * rule.append({ prop: 'color', value: 'black' }) // declaration
262 * rule.append({ text: 'Comment' }) // comment
263 *
264 * root.append('a {}')
265 * root.first.append('color: black; z-index: 1')
266 * ```
267 *
268 * @param nodes New nodes.
269 * @return This node for methods chain.
270 */
271 append(
272 ...nodes: (Node | Node[] | ChildProps | ChildProps[] | string | string[])[]
273 ): this
274
275 /**
276 * Inserts new nodes to the start of the container.
277 *
278 * ```js
279 * const decl1 = new Declaration({ prop: 'color', value: 'black' })
280 * const decl2 = new Declaration({ prop: 'background-color', value: 'white' })
281 * rule.prepend(decl1, decl2)
282 *
283 * root.append({ name: 'charset', params: '"UTF-8"' }) // at-rule
284 * root.append({ selector: 'a' }) // rule
285 * rule.append({ prop: 'color', value: 'black' }) // declaration
286 * rule.append({ text: 'Comment' }) // comment
287 *
288 * root.append('a {}')
289 * root.first.append('color: black; z-index: 1')
290 * ```
291 *
292 * @param nodes New nodes.
293 * @return This node for methods chain.
294 */
295 prepend(
296 ...nodes: (Node | Node[] | ChildProps | ChildProps[] | string | string[])[]
297 ): this
298
299 /**
300 * Add child to the end of the node.
301 *
302 * ```js
303 * rule.push(new Declaration({ prop: 'color', value: 'black' }))
304 * ```
305 *
306 * @param child New node.
307 * @return This node for methods chain.
308 */
309 push(child: Child): this
310
311 /**
312 * Insert new node before old node within the container.
313 *
314 * ```js
315 * rule.insertBefore(decl, decl.clone({ prop: '-webkit-' + decl.prop }))
316 * ```
317 *
318 * @param oldNode Child or child’s index.
319 * @param newNode New node.
320 * @return This node for methods chain.
321 */
322 insertBefore(
323 oldNode: Child | number,
324 newNode: Child | ChildProps | string | Child[] | ChildProps[] | string[]
325 ): this
326
327 /**
328 * Insert new node after old node within the container.
329 *
330 * @param oldNode Child or child’s index.
331 * @param newNode New node.
332 * @return This node for methods chain.
333 */
334 insertAfter(
335 oldNode: Child | number,
336 newNode: Child | ChildProps | string | Child[] | ChildProps[] | string[]
337 ): this
338
339 /**
340 * Removes node from the container and cleans the parent properties
341 * from the node and its children.
342 *
343 * ```js
344 * rule.nodes.length //=> 5
345 * rule.removeChild(decl)
346 * rule.nodes.length //=> 4
347 * decl.parent //=> undefined
348 * ```
349 *
350 * @param child Child or child’s index.
351 * @return This node for methods chain.
352 */
353 removeChild(child: Child | number): this
354
355 /**
356 * Removes all children from the container
357 * and cleans their parent properties.
358 *
359 * ```js
360 * rule.removeAll()
361 * rule.nodes.length //=> 0
362 * ```
363 *
364 * @return This node for methods chain.
365 */
366 removeAll(): this
367
368 /**
369 * Passes all declaration values within the container that match pattern
370 * through callback, replacing those values with the returned result
371 * of callback.
372 *
373 * This method is useful if you are using a custom unit or function
374 * and need to iterate through all values.
375 *
376 * ```js
377 * root.replaceValues(/\d+rem/, { fast: 'rem' }, string => {
378 * return 15 * parseInt(string) + 'px'
379 * })
380 * ```
381 *
382 * @param pattern Replace pattern.
383 * @param {object} opts Options to speed up the search.
384 * @param callback String to replace pattern or callback
385 * that returns a new value. The callback
386 * will receive the same arguments
387 * as those passed to a function parameter
388 * of `String#replace`.
389 * @return This node for methods chain.
390 */
391 replaceValues(
392 pattern: string | RegExp,
393 options: ValueOptions,
394 replaced: string | { (substring: string, ...args: any[]): string }
395 ): this
396 replaceValues(
397 pattern: string | RegExp,
398 replaced: string | { (substring: string, ...args: any[]): string }
399 ): this
400
401 /**
402 * Returns `true` if callback returns `true`
403 * for all of the container’s children.
404 *
405 * ```js
406 * const noPrefixes = rule.every(i => i.prop[0] !== '-')
407 * ```
408 *
409 * @param condition Iterator returns true or false.
410 * @return Is every child pass condition.
411 */
412 every(
413 condition: (node: Child, index: number, nodes: Child[]) => boolean
414 ): boolean
415
416 /**
417 * Returns `true` if callback returns `true` for (at least) one
418 * of the container’s children.
419 *
420 * ```js
421 * const hasPrefix = rule.some(i => i.prop[0] === '-')
422 * ```
423 *
424 * @param condition Iterator returns true or false.
425 * @return Is some child pass condition.
426 */
427 some(
428 condition: (node: Child, index: number, nodes: Child[]) => boolean
429 ): boolean
430
431 /**
432 * Returns a `child`’s index within the `Container#nodes` array.
433 *
434 * ```js
435 * rule.index( rule.nodes[2] ) //=> 2
436 * ```
437 *
438 * @param child Child of the current container.
439 * @return Child index.
440 */
441 index(child: Child | number): number
442}
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