Index: node_modules/postcss/lib/node.d.ts
===================================================================
--- node_modules/postcss/lib/node.d.ts	(revision 2058e5c694bb6097866a5fe6503c519e8f74970f)
+++ node_modules/postcss/lib/node.d.ts	(revision 2058e5c694bb6097866a5fe6503c519e8f74970f)
@@ -0,0 +1,556 @@
+import AtRule = require('./at-rule.js')
+import { AtRuleProps } from './at-rule.js'
+import Comment, { CommentProps } from './comment.js'
+import Container, { NewChild } from './container.js'
+import CssSyntaxError from './css-syntax-error.js'
+import Declaration, { DeclarationProps } from './declaration.js'
+import Document from './document.js'
+import Input from './input.js'
+import { Stringifier, Syntax } from './postcss.js'
+import Result from './result.js'
+import Root from './root.js'
+import Rule, { RuleProps } from './rule.js'
+import Warning, { WarningOptions } from './warning.js'
+
+declare namespace Node {
+  export type ChildNode = AtRule.default | Comment | Declaration | Rule
+
+  export type AnyNode =
+    | AtRule.default
+    | Comment
+    | Declaration
+    | Document
+    | Root
+    | Rule
+
+  export type ChildProps =
+    | AtRuleProps
+    | CommentProps
+    | DeclarationProps
+    | RuleProps
+
+  export interface Position {
+    /**
+     * Source line in file. In contrast to `offset` it starts from 1.
+     */
+    column: number
+
+    /**
+     * Source column in file.
+     */
+    line: number
+
+    /**
+     * Source offset in file. It starts from 0.
+     */
+    offset: number
+  }
+
+  export interface Range {
+    /**
+     * End position, exclusive.
+     */
+    end: Position
+
+    /**
+     * Start position, inclusive.
+     */
+    start: Position
+  }
+
+  /**
+   * Source represents an interface for the {@link Node.source} property.
+   */
+  export interface Source {
+    /**
+     * The inclusive ending position for the source
+     * code of a node.
+     *
+     * However, `end.offset` of a non `Root` node is the exclusive position.
+     * See https://github.com/postcss/postcss/pull/1879 for details.
+     *
+     * ```js
+     * const root = postcss.parse('a { color: black }')
+     * const a = root.first
+     * const color = a.first
+     *
+     * // The offset of `Root` node is the inclusive position
+     * css.source.end   // { line: 1, column: 19, offset: 18 }
+     *
+     * // The offset of non `Root` node is the exclusive position
+     * a.source.end     // { line: 1, column: 18, offset: 18 }
+     * color.source.end // { line: 1, column: 16, offset: 16 }
+     * ```
+     */
+    end?: Position
+
+    /**
+     * The source file from where a node has originated.
+     */
+    input: Input
+
+    /**
+     * The inclusive starting position for the source
+     * code of a node.
+     */
+    start?: Position
+  }
+
+  /**
+   * Interface represents an interface for an object received
+   * as parameter by Node class constructor.
+   */
+  export interface NodeProps {
+    source?: Source
+  }
+
+  export interface NodeErrorOptions {
+    /**
+     * An ending index inside a node's string that should be highlighted as
+     * source of error.
+     */
+    endIndex?: number
+    /**
+     * An index inside a node's string that should be highlighted as source
+     * of error.
+     */
+    index?: number
+    /**
+     * Plugin name that created this error. PostCSS will set it automatically.
+     */
+    plugin?: string
+    /**
+     * A word inside a node's string, that should be highlighted as source
+     * of error.
+     */
+    word?: string
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-shadow
+  class Node extends Node_ {}
+  export { Node as default }
+}
+
+/**
+ * It represents an abstract class that handles common
+ * methods for other CSS abstract syntax tree nodes.
+ *
+ * Any node that represents CSS selector or value should
+ * not extend the `Node` class.
+ */
+declare abstract class Node_ {
+  /**
+   * It represents parent of the current node.
+   *
+   * ```js
+   * root.nodes[0].parent === root //=> true
+   * ```
+   */
+  parent: Container | Document | undefined
+
+  /**
+   * It represents unnecessary whitespace and characters present
+   * in the css source code.
+   *
+   * Information to generate byte-to-byte equal node string as it was
+   * in the origin input.
+   *
+   * The properties of the raws object are decided by parser,
+   * the default parser uses the following properties:
+   *
+   * * `before`: the space symbols before the node. It also stores `*`
+   *   and `_` symbols before the declaration (IE hack).
+   * * `after`: the space symbols after the last child of the node
+   *   to the end of the node.
+   * * `between`: the symbols between the property and value
+   *   for declarations, selector and `{` for rules, or last parameter
+   *   and `{` for at-rules.
+   * * `semicolon`: contains true if the last child has
+   *   an (optional) semicolon.
+   * * `afterName`: the space between the at-rule name and its parameters.
+   * * `left`: the space symbols between `/*` and the comment’s text.
+   * * `right`: the space symbols between the comment’s text
+   *   and <code>*&#47;</code>.
+   * - `important`: the content of the important statement,
+   *   if it is not just `!important`.
+   *
+   * PostCSS filters out the comments inside selectors, declaration values
+   * and at-rule parameters but it stores the origin content in raws.
+   *
+   * ```js
+   * const root = postcss.parse('a {\n  color:black\n}')
+   * root.first.first.raws //=> { before: '\n  ', between: ':' }
+   * ```
+   */
+  raws: any
+
+  /**
+   * It represents information related to origin of a node and is required
+   * for generating source maps.
+   *
+   * The nodes that are created manually using the public APIs
+   * provided by PostCSS will have `source` undefined and
+   * will be absent in the source map.
+   *
+   * For this reason, the plugin developer should consider
+   * duplicating nodes as the duplicate node will have the
+   * same source as the original node by default or assign
+   * source to a node created manually.
+   *
+   * ```js
+   * decl.source.input.from //=> '/home/ai/source.css'
+   * decl.source.start      //=> { line: 10, column: 2 }
+   * decl.source.end        //=> { line: 10, column: 12 }
+   * ```
+   *
+   * ```js
+   * // Incorrect method, source not specified!
+   * const prefixed = postcss.decl({
+   *   prop: '-moz-' + decl.prop,
+   *   value: decl.value
+   * })
+   *
+   * // Correct method, source is inherited when duplicating.
+   * const prefixed = decl.clone({
+   *   prop: '-moz-' + decl.prop
+   * })
+   * ```
+   *
+   * ```js
+   * if (atrule.name === 'add-link') {
+   *   const rule = postcss.rule({
+   *     selector: 'a',
+   *     source: atrule.source
+   *   })
+   *
+   *  atrule.parent.insertBefore(atrule, rule)
+   * }
+   * ```
+   */
+  source?: Node.Source
+
+  /**
+   * It represents type of a node in
+   * an abstract syntax tree.
+   *
+   * A type of node helps in identification of a node
+   * and perform operation based on it's type.
+   *
+   * ```js
+   * const declaration = new Declaration({
+   *   prop: 'color',
+   *   value: 'black'
+   * })
+   *
+   * declaration.type //=> 'decl'
+   * ```
+   */
+  type: string
+
+  constructor(defaults?: object)
+
+  /**
+   * Insert new node after current node to current node’s parent.
+   *
+   * Just alias for `node.parent.insertAfter(node, add)`.
+   *
+   * ```js
+   * decl.after('color: black')
+   * ```
+   *
+   * @param newNode New node.
+   * @return This node for methods chain.
+   */
+  after(
+    newNode: Node | Node.ChildProps | readonly Node[] | string | undefined
+  ): this
+
+  /**
+   * It assigns properties to an existing node instance.
+   *
+   * ```js
+   * decl.assign({ prop: 'word-wrap', value: 'break-word' })
+   * ```
+   *
+   * @param overrides New properties to override the node.
+   *
+   * @return `this` for method chaining.
+   */
+  assign(overrides: object): this
+
+  /**
+   * Insert new node before current node to current node’s parent.
+   *
+   * Just alias for `node.parent.insertBefore(node, add)`.
+   *
+   * ```js
+   * decl.before('content: ""')
+   * ```
+   *
+   * @param newNode New node.
+   * @return This node for methods chain.
+   */
+  before(
+    newNode: Node | Node.ChildProps | readonly Node[] | string | undefined
+  ): this
+
+  /**
+   * Clear the code style properties for the node and its children.
+   *
+   * ```js
+   * node.raws.before  //=> ' '
+   * node.cleanRaws()
+   * node.raws.before  //=> undefined
+   * ```
+   *
+   * @param keepBetween Keep the `raws.between` symbols.
+   */
+  cleanRaws(keepBetween?: boolean): void
+
+  /**
+   * It creates clone of an existing node, which includes all the properties
+   * and their values, that includes `raws` but not `type`.
+   *
+   * ```js
+   * decl.raws.before    //=> "\n  "
+   * const cloned = decl.clone({ prop: '-moz-' + decl.prop })
+   * cloned.raws.before  //=> "\n  "
+   * cloned.toString()   //=> -moz-transform: scale(0)
+   * ```
+   *
+   * @param overrides New properties to override in the clone.
+   *
+   * @return Duplicate of the node instance.
+   */
+  clone(overrides?: object): this
+
+  /**
+   * Shortcut to clone the node and insert the resulting cloned node
+   * after the current node.
+   *
+   * @param overrides New properties to override in the clone.
+   * @return New node.
+   */
+  cloneAfter(overrides?: object): this
+
+  /**
+   * Shortcut to clone the node and insert the resulting cloned node
+   * before the current node.
+   *
+   * ```js
+   * decl.cloneBefore({ prop: '-moz-' + decl.prop })
+   * ```
+   *
+   * @param overrides Mew properties to override in the clone.
+   *
+   * @return New node
+   */
+  cloneBefore(overrides?: object): this
+
+  /**
+   * It creates an instance of the class `CssSyntaxError` and parameters passed
+   * to this method are assigned to the error instance.
+   *
+   * The error instance will have description for the
+   * error, original position of the node in the
+   * source, showing line and column number.
+   *
+   * If any previous map is present, it would be used
+   * to get original position of the source.
+   *
+   * The Previous Map here is referred to the source map
+   * generated by previous compilation, example: Less,
+   * Stylus and Sass.
+   *
+   * This method returns the error instance instead of
+   * throwing it.
+   *
+   * ```js
+   * if (!variables[name]) {
+   *   throw decl.error(`Unknown variable ${name}`, { word: name })
+   *   // CssSyntaxError: postcss-vars:a.sass:4:3: Unknown variable $black
+   *   //   color: $black
+   *   // a
+   *   //          ^
+   *   //   background: white
+   * }
+   * ```
+   *
+   * @param message Description for the error instance.
+   * @param options Options for the error instance.
+   *
+   * @return Error instance is returned.
+   */
+  error(message: string, options?: Node.NodeErrorOptions): CssSyntaxError
+
+  /**
+   * Returns the next child of the node’s parent.
+   * Returns `undefined` if the current node is the last child.
+   *
+   * ```js
+   * if (comment.text === 'delete next') {
+   *   const next = comment.next()
+   *   if (next) {
+   *     next.remove()
+   *   }
+   * }
+   * ```
+   *
+   * @return Next node.
+   */
+  next(): Node.ChildNode | undefined
+
+  /**
+   * Get the position for a word or an index inside the node.
+   *
+   * @param opts Options.
+   * @return Position.
+   */
+  positionBy(opts?: Pick<WarningOptions, 'index' | 'word'>): Node.Position
+
+  /**
+   * Convert string index to line/column.
+   *
+   * @param index The symbol number in the node’s string.
+   * @return Symbol position in file.
+   */
+  positionInside(index: number): Node.Position
+
+  /**
+   * Returns the previous child of the node’s parent.
+   * Returns `undefined` if the current node is the first child.
+   *
+   * ```js
+   * const annotation = decl.prev()
+   * if (annotation.type === 'comment') {
+   *   readAnnotation(annotation.text)
+   * }
+   * ```
+   *
+   * @return Previous node.
+   */
+  prev(): Node.ChildNode | undefined
+
+  /**
+   * Get the range for a word or start and end index inside the node.
+   * The start index is inclusive; the end index is exclusive.
+   *
+   * @param opts Options.
+   * @return Range.
+   */
+  rangeBy(
+    opts?: Pick<WarningOptions, 'end' | 'endIndex' | 'index' | 'start' | 'word'>
+  ): Node.Range
+
+  /**
+   * Returns a `raws` value. If the node is missing
+   * the code style property (because the node was manually built or cloned),
+   * PostCSS will try to autodetect the code style property by looking
+   * at other nodes in the tree.
+   *
+   * ```js
+   * const root = postcss.parse('a { background: white }')
+   * root.nodes[0].append({ prop: 'color', value: 'black' })
+   * root.nodes[0].nodes[1].raws.before   //=> undefined
+   * root.nodes[0].nodes[1].raw('before') //=> ' '
+   * ```
+   *
+   * @param prop        Name of code style property.
+   * @param defaultType Name of default value, it can be missed
+   *                    if the value is the same as prop.
+   * @return {string} Code style value.
+   */
+  raw(prop: string, defaultType?: string): string
+
+  /**
+   * It removes the node from its parent and deletes its parent property.
+   *
+   * ```js
+   * if (decl.prop.match(/^-webkit-/)) {
+   *   decl.remove()
+   * }
+   * ```
+   *
+   * @return `this` for method chaining.
+   */
+  remove(): this
+
+  /**
+   * Inserts node(s) before the current node and removes the current node.
+   *
+   * ```js
+   * AtRule: {
+   *   mixin: atrule => {
+   *     atrule.replaceWith(mixinRules[atrule.params])
+   *   }
+   * }
+   * ```
+   *
+   * @param nodes Mode(s) to replace current one.
+   * @return Current node to methods chain.
+   */
+  replaceWith(...nodes: NewChild[]): this
+
+  /**
+   * Finds the Root instance of the node’s tree.
+   *
+   * ```js
+   * root.nodes[0].nodes[0].root() === root
+   * ```
+   *
+   * @return Root parent.
+   */
+  root(): Root
+
+  /**
+   * Fix circular links on `JSON.stringify()`.
+   *
+   * @return Cleaned object.
+   */
+  toJSON(): object
+
+  /**
+   * It compiles the node to browser readable cascading style sheets string
+   * depending on it's type.
+   *
+   * ```js
+   * new Rule({ selector: 'a' }).toString() //=> "a {}"
+   * ```
+   *
+   * @param stringifier A syntax to use in string generation.
+   * @return CSS string of this node.
+   */
+  toString(stringifier?: Stringifier | Syntax): string
+
+  /**
+   * It is a wrapper for {@link Result#warn}, providing convenient
+   * way of generating warnings.
+   *
+   * ```js
+   *   Declaration: {
+   *     bad: (decl, { result }) => {
+   *       decl.warn(result, 'Deprecated property: bad')
+   *     }
+   *   }
+   * ```
+   *
+   * @param result The `Result` instance that will receive the warning.
+   * @param message Description for the warning.
+   * @param options Options for the warning.
+   *
+   * @return `Warning` instance is returned
+   */
+  warn(result: Result, message: string, options?: WarningOptions): Warning
+
+  /**
+   * If this node isn't already dirty, marks it and its ancestors as such. This
+   * indicates to the LazyResult processor that the {@link Root} has been
+   * modified by the current plugin and may need to be processed again by other
+   * plugins.
+   */
+  protected markDirty(): void
+}
+
+declare class Node extends Node_ {}
+
+export = Node