import { LocationInfo } from '../tree';
import { CstNode, CstChild, IToken } from '@jesscss/css-parser';
import type { BaseTokenType } from './cst-visitor';
/**
 * Convert a location object to a location array
 */
export declare const getLocation: (loc?: CstNode['location']) => LocationInfo;
/**
 * Processes mixed whitespace / comments
 * from the CST and returns a Node
 */
export declare function collapseTokens(tokens: IToken[]): BaseTokenType;
export declare function collectTokens(nodes: CstChild[], out?: IToken[]): IToken[];
export declare function flatten(arr: any[]): any[];
export declare function isToken(value: any): value is IToken;