Reference

type ParsedSelectorToken = PostcssNode & object;

type PostCSSLeaf = 
  | ReturnType<typeof tag>
  | ReturnType<typeof id>
  | ReturnType<typeof attribute>
  | ReturnType<typeof combinator>
  | ReturnType<typeof pseudo>
| ReturnType<typeof string>;

type PostcssNode = 
  | Tag
  | String
  | Selector
  | Root
  | Pseudo
  | Nesting
  | Identifier
  | Comment
  | Combinator
  | ClassName
  | Attribute
  | Universal;

type PostcssNodeWithChildren = Selector | Root | Pseudo;

function asAttributeNode(node?): Attribute

function asCombinatorNode(node?): Combinator

function asCommentNode(node?): Comment

function asIdentifierNode(node?): Identifier

function asPostcssNodeWithChildren(node?): PostcssNodeWithChildren

function asPseudoNode(node?): Pseudo

function asSelectorNode(node?): Selector

function asStringNode(node?): String

function asTagNode(node?): Tag

function escapeDots(query): string

function escapeScopedNamesSlashes(query): string

function isAttributeNode(node): node is Attribute

function isCombinatorNode(node): node is Combinator

function isCommentNode(node): node is Comment

function isIdentifierNode(node): node is Identifier

function isPostcssNodeWithChildren(node): node is PostcssNodeWithChildren

function isPseudoNode(node): node is Pseudo

function isSelectorNode(node): node is Selector

function isStringNode(node): node is String

function isTagNode(node): node is Tag

function parse(query): Root

function unescapeDots(query): string