import type { Context } from '../context';
import type { Visitor } from '../visitor';
import { OutputCollector } from '../output';
export declare type Primitive = string | number | Node;
/** Function is used by the Call node */
export declare type NodeValue = Function | Primitive | Primitive[];
export declare type NodeMap = {
    value?: NodeValue;
    [k: string]: NodeValue;
};
export declare type LocationInfo = [
    startOffset?: number,
    startLine?: number,
    startColumn?: number,
    endOffset?: number,
    endLine?: number,
    endColumn?: number
];
export declare type FileInfo = {
    filename?: string;
    rootpath?: string;
};
export declare const isNodeMap: (val: NodeValue | NodeMap) => val is NodeMap;
export declare abstract class Node {
    location: LocationInfo;
    fileInfo: FileInfo;
    type: string;
    evaluated: boolean;
    allowRoot: boolean;
    allowRuleRoot: boolean;
    _nodeKeys: string[];
    /** Used by Ruleset */
    rootRules: Node[];
    value: NodeValue;
    /** We'll put arbitrary props on the node */
    [k: string]: unknown;
    constructor(value: NodeValue | NodeMap, location?: LocationInfo, fileInfo?: FileInfo);
    /**
     * Mutates node children in place. Used by eval()
     * which first makes a shallow clone before mutating.
     */
    processNodes(func: (n: Node) => Node): void;
    /**
     * Fire a function for each Node in the tree, recursively
     */
    walkNodes(func: (n: Node) => void): void;
    collectRoots(): Node[];
    accept(visitor: Visitor): void;
    /**
     * Creates a copy of the current node.
     */
    clone(): this;
    eval(context: Context): Node;
    inherit(node: Node): this;
    fround(value: number): number;
    valueOf(): NodeValue;
    /**
     * Generate a .ts module and .ts.map
     * @todo - Should we generate an ESTree AST to avoid re-parsing in Rollup?
     */
    abstract toModule(context: Context, out: OutputCollector): void;
    /** Generate a .css file and .css.map */
    toCSS(context: Context, out: OutputCollector): void;
}