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import AtRule from './at-rule.js'
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import Comment from './comment.js'
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import Declaration from './declaration.js'
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import Node, { ChildNode, ChildProps, NodeProps } from './node.js'
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import Rule from './rule.js'
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declare namespace Container {
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export class ContainerWithChildren<
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Child extends Node = ChildNode
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> extends Container_<Child> {
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nodes: Child[]
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}
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export interface ValueOptions {
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/**
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* String that’s used to narrow down values and speed up the regexp search.
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*/
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fast?: string
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/**
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* An array of property names.
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*/
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props?: readonly string[]
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}
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export interface ContainerProps extends NodeProps {
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nodes?: readonly (ChildProps | Node)[]
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}
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/**
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* All types that can be passed into container methods to create or add a new
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* child node.
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*/
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export type NewChild =
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| ChildProps
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| Node
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| readonly ChildProps[]
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| readonly Node[]
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| readonly string[]
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| string
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| undefined
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// eslint-disable-next-line @typescript-eslint/no-use-before-define
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export { Container_ as default }
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}
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/**
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* The `Root`, `AtRule`, and `Rule` container nodes
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* inherit some common methods to help work with their children.
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*
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* Note that all containers can store any content. If you write a rule inside
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* a rule, PostCSS will parse it.
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*/
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declare abstract class Container_<Child extends Node = ChildNode> extends Node {
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/**
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* An array containing the container’s children.
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*
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* ```js
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* const root = postcss.parse('a { color: black }')
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* root.nodes.length //=> 1
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* root.nodes[0].selector //=> 'a'
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* root.nodes[0].nodes[0].prop //=> 'color'
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* ```
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*/
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nodes: Child[] | undefined
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/**
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* An internal method that converts a {@link NewChild} into a list of actual
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* child nodes that can then be added to this container.
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*
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* This ensures that the nodes' parent is set to this container, that they use
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* the correct prototype chain, and that they're marked as dirty.
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*
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* @param mnodes The new node or nodes to add.
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* @param sample A node from whose raws the new node's `before` raw should be
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* taken.
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* @param type This should be set to `'prepend'` if the new nodes will be
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* inserted at the beginning of the container.
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* @hidden
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*/
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protected normalize(
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nodes: Container.NewChild,
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sample: Node | undefined,
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type?: 'prepend' | false
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): Child[]
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|
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/**
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|
* Inserts new nodes to the end of the container.
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*
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* ```js
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* const decl1 = new Declaration({ prop: 'color', value: 'black' })
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* const decl2 = new Declaration({ prop: 'background-color', value: 'white' })
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* rule.append(decl1, decl2)
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*
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* root.append({ name: 'charset', params: '"UTF-8"' }) // at-rule
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* root.append({ selector: 'a' }) // rule
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* rule.append({ prop: 'color', value: 'black' }) // declaration
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* rule.append({ text: 'Comment' }) // comment
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*
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* root.append('a {}')
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* root.first.append('color: black; z-index: 1')
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|
* ```
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*
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|
* @param nodes New nodes.
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|
* @return This node for methods chain.
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|
*/
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append(...nodes: Container.NewChild[]): this
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assign(overrides: Container.ContainerProps | object): this
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clone(overrides?: Partial<Container.ContainerProps>): this
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cloneAfter(overrides?: Partial<Container.ContainerProps>): this
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cloneBefore(overrides?: Partial<Container.ContainerProps>): this
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|
|
|
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/**
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|
* Iterates through the container’s immediate children,
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* calling `callback` for each child.
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|
*
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* Returning `false` in the callback will break iteration.
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*
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* This method only iterates through the container’s immediate children.
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|
* If you need to recursively iterate through all the container’s descendant
|
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|
* nodes, use `Container#walk`.
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|
*
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|
|
* Unlike the for `{}`-cycle or `Array#forEach` this iterator is safe
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|
* if you are mutating the array of child nodes during iteration.
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|
* PostCSS will adjust the current index to match the mutations.
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*
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|
* ```js
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* const root = postcss.parse('a { color: black; z-index: 1 }')
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|
|
* const rule = root.first
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|
*
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|
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* for (const decl of rule.nodes) {
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|
* decl.cloneBefore({ prop: '-webkit-' + decl.prop })
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|
|
* // Cycle will be infinite, because cloneBefore moves the current node
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|
* // to the next index
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|
* }
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*
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* rule.each(decl => {
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* decl.cloneBefore({ prop: '-webkit-' + decl.prop })
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|
|
* // Will be executed only for color and z-index
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|
* })
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|
* ```
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|
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*
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|
|
* @param callback Iterator receives each node and index.
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|
* @return Returns `false` if iteration was broke.
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*/
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|
each(
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|
callback: (node: Child, index: number) => false | void
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|
): false | undefined
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|
|
/**
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|
|
* Returns `true` if callback returns `true`
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|
* for all of the container’s children.
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|
*
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|
|
* ```js
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|
|
* const noPrefixes = rule.every(i => i.prop[0] !== '-')
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|
|
* ```
|
|
|
*
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|
|
* @param condition Iterator returns true or false.
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|
* @return Is every child pass condition.
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|
*/
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|
|
every(
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|
condition: (node: Child, index: number, nodes: Child[]) => boolean
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|
): boolean
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|
|
|
|
/**
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|
|
* Returns a `child`’s index within the `Container#nodes` array.
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|
|
*
|
|
|
* ```js
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|
|
* rule.index( rule.nodes[2] ) //=> 2
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|
|
* ```
|
|
|
*
|
|
|
* @param child Child of the current container.
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|
* @return Child index.
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|
|
*/
|
|
|
index(child: Child | number): number
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|
|
/**
|
|
|
* Insert new node after old node within the container.
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|
*
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|
|
* @param oldNode Child or child’s index.
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|
|
* @param newNode New node.
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|
|
* @return This node for methods chain.
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|
*/
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|
|
insertAfter(oldNode: Child | number, newNode: Container.NewChild): this
|
|
|
|
|
|
/**
|
|
|
* Insert new node before old node within the container.
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|
|
*
|
|
|
* ```js
|
|
|
* rule.insertBefore(decl, decl.clone({ prop: '-webkit-' + decl.prop }))
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|
|
* ```
|
|
|
*
|
|
|
* @param oldNode Child or child’s index.
|
|
|
* @param newNode New node.
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|
|
* @return This node for methods chain.
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|
|
*/
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|
|
insertBefore(oldNode: Child | number, newNode: Container.NewChild): this
|
|
|
|
|
|
/**
|
|
|
* Traverses the container’s descendant nodes, calling callback
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|
|
* 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: Container.NewChild[]): 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} options Options to speed up the search.
|
|
|
* @param replaced 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
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|
* rule.first === rules.nodes[0]
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* ```
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|
*/
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get first(): Child | undefined
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/**
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|
* The container’s last child.
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*
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|
* ```js
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|
|
* rule.last === rule.nodes[rule.nodes.length - 1]
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|
|
* ```
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|
*/
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get last(): Child | undefined
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|
}
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|
declare class Container<
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Child extends Node = ChildNode
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|
> extends Container_<Child> {}
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|
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export = Container
|
