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import AtRule from './at-rule.js'
import Comment from './comment.js'
import Declaration from './declaration.js'
import Node, { ChildNode, ChildProps, NodeProps } from './node.js'
import Rule from './rule.js'
declare namespace Container {
export class ContainerWithChildren<
Child extends Node = ChildNode
> extends Container_<Child> {
nodes: Child[]
}
export interface ValueOptions {
/**
* String that’s used to narrow down values and speed up the regexp search.
*/
fast?: string
/**
* An array of property names.
*/
props?: string[]
}
export interface ContainerProps extends NodeProps {
nodes?: (ChildNode | ChildProps)[]
}
// eslint-disable-next-line @typescript-eslint/no-use-before-define
export { Container_ as default }
}
/**
* 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.
*/
declare abstract class Container_<Child extends Node = ChildNode> 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: Child[] | 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: (
| ChildProps
| ChildProps[]
| Node
| Node[]
| string
| string[]
| undefined
)[]
): this
assign(overrides: Container.ContainerProps | object): this
clone(overrides?: Partial<Container.ContainerProps>): Container<Child>
cloneAfter(overrides?: Partial<Container.ContainerProps>): Container<Child>
cloneBefore(overrides?: Partial<Container.ContainerProps>): Container<Child>
/**
* 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: Child, index: number) => false | void
): false | undefined
/**
* 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: Child, index: number, nodes: Child[]) => 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: Child | number): number
/**
* 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: Child | number,
newNode:
| Child
| Child[]
| ChildProps
| ChildProps[]
| string
| string[]
| undefined
): 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: Child | number,
newNode:
| Child
| Child[]
| ChildProps
| ChildProps[]
| string
| string[]
| undefined
): this
/**
* 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.
*/
/**
* 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: (
| ChildProps
| ChildProps[]
| Node
| Node[]
| string
| string[]
| undefined
)[]
): 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: Child): 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
/**
* 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: Child | number): this
replaceValues(
pattern: RegExp | string,
replaced: { (substring: string, ...args: any[]): string } | string
): 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: RegExp | string,
options: Container.ValueOptions,
replaced: { (substring: string, ...args: any[]): string } | string
): this
/**
* 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: Child, index: number, nodes: Child[]) => boolean
): boolean
/**
* 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 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: RegExp | string,
callback: (atRule: AtRule, index: number) => false | void
): false | undefined
walkAtRules(
callback: (atRule: AtRule, index: number) => false | void
): false | undefined
walkComments(
callback: (comment: Comment, indexed: number) => false | void
): false | undefined
walkComments(
callback: (comment: Comment, indexed: 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: RegExp | string,
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: RegExp | string,
callback: (rule: Rule, index: number) => false | void
): false | undefined
walkRules(
callback: (rule: Rule, index: number) => false | void
): false | undefined
/**
* The container’s first child.
*
* ```js
* rule.first === rules.nodes[0]
* ```
*/
get first(): Child | undefined
/**
* The container’s last child.
*
* ```js
* rule.last === rule.nodes[rule.nodes.length - 1]
* ```
*/
get last(): Child | undefined
}
declare class Container<
Child extends Node = ChildNode
> extends Container_<Child> {}
export = Container