452 lines
12 KiB
TypeScript
452 lines
12 KiB
TypeScript
import Node, { ChildNode, NodeProps, ChildProps } from './node.js'
|
||
import Declaration from './declaration.js'
|
||
import Comment from './comment.js'
|
||
import AtRule from './at-rule.js'
|
||
import Rule from './rule.js'
|
||
|
||
interface ValueOptions {
|
||
/**
|
||
* An array of property names.
|
||
*/
|
||
props?: string[]
|
||
|
||
/**
|
||
* String that’s used to narrow down values and speed up the regexp search.
|
||
*/
|
||
fast?: string
|
||
}
|
||
|
||
export interface ContainerProps extends NodeProps {
|
||
nodes?: (ChildNode | ChildProps)[]
|
||
}
|
||
|
||
/**
|
||
* The `Root`, `AtRule`, and `Rule` container nodes
|
||
* inherit some common methods to help work with their children.
|
||
*
|
||
* Note that all containers can store any content. If you write a rule inside
|
||
* a rule, PostCSS will parse it.
|
||
*/
|
||
export default abstract class Container extends Node {
|
||
/**
|
||
* An array containing the container’s children.
|
||
*
|
||
* ```js
|
||
* const root = postcss.parse('a { color: black }')
|
||
* root.nodes.length //=> 1
|
||
* root.nodes[0].selector //=> 'a'
|
||
* root.nodes[0].nodes[0].prop //=> 'color'
|
||
* ```
|
||
*/
|
||
nodes: ChildNode[]
|
||
|
||
/**
|
||
* The container’s first child.
|
||
*
|
||
* ```js
|
||
* rule.first === rules.nodes[0]
|
||
* ```
|
||
*/
|
||
get first(): ChildNode | undefined
|
||
|
||
/**
|
||
* The container’s last child.
|
||
*
|
||
* ```js
|
||
* rule.last === rule.nodes[rule.nodes.length - 1]
|
||
* ```
|
||
*/
|
||
get last(): ChildNode | undefined
|
||
|
||
/**
|
||
* Iterates through the container’s immediate children,
|
||
* calling `callback` for each child.
|
||
*
|
||
* Returning `false` in the callback will break iteration.
|
||
*
|
||
* This method only iterates through the container’s immediate children.
|
||
* If you need to recursively iterate through all the container’s descendant
|
||
* nodes, use `Container#walk`.
|
||
*
|
||
* Unlike the for `{}`-cycle or `Array#forEach` this iterator is safe
|
||
* if you are mutating the array of child nodes during iteration.
|
||
* PostCSS will adjust the current index to match the mutations.
|
||
*
|
||
* ```js
|
||
* const root = postcss.parse('a { color: black; z-index: 1 }')
|
||
* const rule = root.first
|
||
*
|
||
* for (const decl of rule.nodes) {
|
||
* decl.cloneBefore({ prop: '-webkit-' + decl.prop })
|
||
* // Cycle will be infinite, because cloneBefore moves the current node
|
||
* // to the next index
|
||
* }
|
||
*
|
||
* rule.each(decl => {
|
||
* decl.cloneBefore({ prop: '-webkit-' + decl.prop })
|
||
* // Will be executed only for color and z-index
|
||
* })
|
||
* ```
|
||
*
|
||
* @param callback Iterator receives each node and index.
|
||
* @return Returns `false` if iteration was broke.
|
||
*/
|
||
each(
|
||
callback: (node: ChildNode, index: number) => false | void
|
||
): false | undefined
|
||
|
||
/**
|
||
* Traverses the container’s descendant nodes, calling callback
|
||
* for each node.
|
||
*
|
||
* Like container.each(), this method is safe to use
|
||
* if you are mutating arrays during iteration.
|
||
*
|
||
* If you only need to iterate through the container’s immediate children,
|
||
* use `Container#each`.
|
||
*
|
||
* ```js
|
||
* root.walk(node => {
|
||
* // Traverses all descendant nodes.
|
||
* })
|
||
* ```
|
||
*
|
||
* @param callback Iterator receives each node and index.
|
||
* @return Returns `false` if iteration was broke.
|
||
*/
|
||
walk(
|
||
callback: (node: ChildNode, index: number) => false | void
|
||
): false | undefined
|
||
|
||
/**
|
||
* Traverses the container’s descendant nodes, calling callback
|
||
* for each declaration node.
|
||
*
|
||
* If you pass a filter, iteration will only happen over declarations
|
||
* with matching properties.
|
||
*
|
||
* ```js
|
||
* root.walkDecls(decl => {
|
||
* checkPropertySupport(decl.prop)
|
||
* })
|
||
*
|
||
* root.walkDecls('border-radius', decl => {
|
||
* decl.remove()
|
||
* })
|
||
*
|
||
* root.walkDecls(/^background/, decl => {
|
||
* decl.value = takeFirstColorFromGradient(decl.value)
|
||
* })
|
||
* ```
|
||
*
|
||
* Like `Container#each`, this method is safe
|
||
* to use if you are mutating arrays during iteration.
|
||
*
|
||
* @param prop String or regular expression to filter declarations
|
||
* by property name.
|
||
* @param callback Iterator receives each node and index.
|
||
* @return Returns `false` if iteration was broke.
|
||
*/
|
||
walkDecls(
|
||
propFilter: string | RegExp,
|
||
callback: (decl: Declaration, index: number) => false | void
|
||
): false | undefined
|
||
walkDecls(
|
||
callback: (decl: Declaration, index: number) => false | void
|
||
): false | undefined
|
||
|
||
/**
|
||
* Traverses the container’s descendant nodes, calling callback
|
||
* for each rule node.
|
||
*
|
||
* If you pass a filter, iteration will only happen over rules
|
||
* with matching selectors.
|
||
*
|
||
* Like `Container#each`, this method is safe
|
||
* to use if you are mutating arrays during iteration.
|
||
*
|
||
* ```js
|
||
* const selectors = []
|
||
* root.walkRules(rule => {
|
||
* selectors.push(rule.selector)
|
||
* })
|
||
* console.log(`Your CSS uses ${ selectors.length } selectors`)
|
||
* ```
|
||
*
|
||
* @param selector String or regular expression to filter rules by selector.
|
||
* @param callback Iterator receives each node and index.
|
||
* @return Returns `false` if iteration was broke.
|
||
*/
|
||
walkRules(
|
||
selectorFilter: string | RegExp,
|
||
callback: (atRule: Rule, index: number) => false | void
|
||
): false | undefined
|
||
walkRules(
|
||
callback: (atRule: Rule, index: number) => false | void
|
||
): false | undefined
|
||
|
||
/**
|
||
* Traverses the container’s descendant nodes, calling callback
|
||
* for each at-rule node.
|
||
*
|
||
* If you pass a filter, iteration will only happen over at-rules
|
||
* that have matching names.
|
||
*
|
||
* Like `Container#each`, this method is safe
|
||
* to use if you are mutating arrays during iteration.
|
||
*
|
||
* ```js
|
||
* root.walkAtRules(rule => {
|
||
* if (isOld(rule.name)) rule.remove()
|
||
* })
|
||
*
|
||
* let first = false
|
||
* root.walkAtRules('charset', rule => {
|
||
* if (!first) {
|
||
* first = true
|
||
* } else {
|
||
* rule.remove()
|
||
* }
|
||
* })
|
||
* ```
|
||
*
|
||
* @param name String or regular expression to filter at-rules by name.
|
||
* @param callback Iterator receives each node and index.
|
||
* @return Returns `false` if iteration was broke.
|
||
*/
|
||
walkAtRules(
|
||
nameFilter: string | RegExp,
|
||
callback: (atRule: AtRule, index: number) => false | void
|
||
): false | undefined
|
||
walkAtRules(
|
||
callback: (atRule: AtRule, index: number) => false | void
|
||
): false | undefined
|
||
|
||
/**
|
||
* Traverses the container’s descendant nodes, calling callback
|
||
* for each comment node.
|
||
*
|
||
* Like `Container#each`, this method is safe
|
||
* to use if you are mutating arrays during iteration.
|
||
*
|
||
* ```js
|
||
* root.walkComments(comment => {
|
||
* comment.remove()
|
||
* })
|
||
* ```
|
||
*
|
||
* @param callback Iterator receives each node and index.
|
||
* @return Returns `false` if iteration was broke.
|
||
*/
|
||
|
||
walkComments(
|
||
callback: (comment: Comment, indexed: number) => false | void
|
||
): false | undefined
|
||
walkComments(
|
||
callback: (comment: Comment, indexed: number) => false | void
|
||
): false | undefined
|
||
|
||
/**
|
||
* Inserts new nodes to the end of the container.
|
||
*
|
||
* ```js
|
||
* const decl1 = new Declaration({ prop: 'color', value: 'black' })
|
||
* const decl2 = new Declaration({ prop: 'background-color', value: 'white' })
|
||
* rule.append(decl1, decl2)
|
||
*
|
||
* root.append({ name: 'charset', params: '"UTF-8"' }) // at-rule
|
||
* root.append({ selector: 'a' }) // rule
|
||
* rule.append({ prop: 'color', value: 'black' }) // declaration
|
||
* rule.append({ text: 'Comment' }) // comment
|
||
*
|
||
* root.append('a {}')
|
||
* root.first.append('color: black; z-index: 1')
|
||
* ```
|
||
*
|
||
* @param nodes New nodes.
|
||
* @return This node for methods chain.
|
||
*/
|
||
append(
|
||
...nodes: (Node | Node[] | ChildProps | ChildProps[] | string | string[])[]
|
||
): this
|
||
|
||
/**
|
||
* Inserts new nodes to the start of the container.
|
||
*
|
||
* ```js
|
||
* const decl1 = new Declaration({ prop: 'color', value: 'black' })
|
||
* const decl2 = new Declaration({ prop: 'background-color', value: 'white' })
|
||
* rule.prepend(decl1, decl2)
|
||
*
|
||
* root.append({ name: 'charset', params: '"UTF-8"' }) // at-rule
|
||
* root.append({ selector: 'a' }) // rule
|
||
* rule.append({ prop: 'color', value: 'black' }) // declaration
|
||
* rule.append({ text: 'Comment' }) // comment
|
||
*
|
||
* root.append('a {}')
|
||
* root.first.append('color: black; z-index: 1')
|
||
* ```
|
||
*
|
||
* @param nodes New nodes.
|
||
* @return This node for methods chain.
|
||
*/
|
||
prepend(
|
||
...nodes: (Node | Node[] | ChildProps | ChildProps[] | string | string[])[]
|
||
): this
|
||
|
||
/**
|
||
* Add child to the end of the node.
|
||
*
|
||
* ```js
|
||
* rule.push(new Declaration({ prop: 'color', value: 'black' }))
|
||
* ```
|
||
*
|
||
* @param child New node.
|
||
* @return This node for methods chain.
|
||
*/
|
||
push(child: ChildNode): this
|
||
|
||
/**
|
||
* Insert new node before old node within the container.
|
||
*
|
||
* ```js
|
||
* rule.insertBefore(decl, decl.clone({ prop: '-webkit-' + decl.prop }))
|
||
* ```
|
||
*
|
||
* @param oldNode Child or child’s index.
|
||
* @param newNode New node.
|
||
* @return This node for methods chain.
|
||
*/
|
||
insertBefore(
|
||
oldNode: ChildNode | number,
|
||
newNode:
|
||
| ChildNode
|
||
| ChildProps
|
||
| string
|
||
| ChildNode[]
|
||
| ChildProps[]
|
||
| string[]
|
||
): this
|
||
|
||
/**
|
||
* Insert new node after old node within the container.
|
||
*
|
||
* @param oldNode Child or child’s index.
|
||
* @param newNode New node.
|
||
* @return This node for methods chain.
|
||
*/
|
||
insertAfter(
|
||
oldNode: ChildNode | number,
|
||
newNode:
|
||
| ChildNode
|
||
| ChildProps
|
||
| string
|
||
| ChildNode[]
|
||
| ChildProps[]
|
||
| string[]
|
||
): this
|
||
|
||
/**
|
||
* Removes node from the container and cleans the parent properties
|
||
* from the node and its children.
|
||
*
|
||
* ```js
|
||
* rule.nodes.length //=> 5
|
||
* rule.removeChild(decl)
|
||
* rule.nodes.length //=> 4
|
||
* decl.parent //=> undefined
|
||
* ```
|
||
*
|
||
* @param child Child or child’s index.
|
||
* @return This node for methods chain.
|
||
*/
|
||
removeChild(child: ChildNode | number): this
|
||
|
||
/**
|
||
* Removes all children from the container
|
||
* and cleans their parent properties.
|
||
*
|
||
* ```js
|
||
* rule.removeAll()
|
||
* rule.nodes.length //=> 0
|
||
* ```
|
||
*
|
||
* @return This node for methods chain.
|
||
*/
|
||
removeAll(): this
|
||
|
||
/**
|
||
* Passes all declaration values within the container that match pattern
|
||
* through callback, replacing those values with the returned result
|
||
* of callback.
|
||
*
|
||
* This method is useful if you are using a custom unit or function
|
||
* and need to iterate through all values.
|
||
*
|
||
* ```js
|
||
* root.replaceValues(/\d+rem/, { fast: 'rem' }, string => {
|
||
* return 15 * parseInt(string) + 'px'
|
||
* })
|
||
* ```
|
||
*
|
||
* @param pattern Replace pattern.
|
||
* @param {object} opts Options to speed up the search.
|
||
* @param callback String to replace pattern or callback
|
||
* that returns a new value. The callback
|
||
* will receive the same arguments
|
||
* as those passed to a function parameter
|
||
* of `String#replace`.
|
||
* @return This node for methods chain.
|
||
*/
|
||
replaceValues(
|
||
pattern: string | RegExp,
|
||
options: ValueOptions,
|
||
replaced: string | { (substring: string, ...args: any[]): string }
|
||
): this
|
||
replaceValues(
|
||
pattern: string | RegExp,
|
||
replaced: string | { (substring: string, ...args: any[]): string }
|
||
): this
|
||
|
||
/**
|
||
* Returns `true` if callback returns `true`
|
||
* for all of the container’s children.
|
||
*
|
||
* ```js
|
||
* const noPrefixes = rule.every(i => i.prop[0] !== '-')
|
||
* ```
|
||
*
|
||
* @param condition Iterator returns true or false.
|
||
* @return Is every child pass condition.
|
||
*/
|
||
every(
|
||
condition: (node: ChildNode, index: number, nodes: ChildNode[]) => boolean
|
||
): boolean
|
||
|
||
/**
|
||
* Returns `true` if callback returns `true` for (at least) one
|
||
* of the container’s children.
|
||
*
|
||
* ```js
|
||
* const hasPrefix = rule.some(i => i.prop[0] === '-')
|
||
* ```
|
||
*
|
||
* @param condition Iterator returns true or false.
|
||
* @return Is some child pass condition.
|
||
*/
|
||
some(
|
||
condition: (node: ChildNode, index: number, nodes: ChildNode[]) => boolean
|
||
): boolean
|
||
|
||
/**
|
||
* Returns a `child`’s index within the `Container#nodes` array.
|
||
*
|
||
* ```js
|
||
* rule.index( rule.nodes[2] ) //=> 2
|
||
* ```
|
||
*
|
||
* @param child Child of the current container.
|
||
* @return Child index.
|
||
*/
|
||
index(child: ChildNode | number): number
|
||
}
|