import { AnyNode, NodeContent, NodeType } from './node';
import { Promisable } from './utility';
export interface VisitorFunction {
    (node: AnyNode, format: string, meta: NodeContent[NodeType.MetaMap]): Promisable<void | AnyNode | AnyNode[]>;
}
export interface ArrayVisitorFunction {
    (node: AnyNode[], format: string, meta: NodeContent[NodeType.MetaMap]): Promisable<void | AnyNode[]>;
}
export type VisitorMap = {
    [K in NodeType]?: (node: K extends keyof NodeContent ? NodeContent[K] : undefined, format: string, meta: NodeContent[NodeType.MetaMap]) => Promisable<void | AnyNode | AnyNode[]>;
};
export interface VisitorObject {
    single?: VisitorFunction;
    array?: ArrayVisitorFunction;
}
/**
 * allow both a function that filters single elements (compat with old version), as well as passing two filter functions:
 * one that will be called with every list of children and can return a new list of children to replace them,
 * and one that acts on single elements
 */
export type Visitor = VisitorFunction | VisitorMap | VisitorObject;