import { Database } from "./Database";
import { Container } from "./Container";
import { Muid, AsOf, Meta } from "./typedefs";
export declare class PairSet extends Container {
    private constructor();
    static get(database?: Database, muid?: Muid): PairSet;
    static create(database?: Database, meta?: Meta): Promise<PairSet>;
    /**
     * Includes a pair of Muids or Containers in the pair set.
     * @param key a pair of either containers or Muids to include
     * @param change an optional bundler to put this change into
     * @returns a promise that resolves to the Muid for the inclusion
     */
    include(key: [Container, Container], meta?: Meta): Promise<Muid>;
    /**
     * Excludes a pair of Muids or Containers in the pair set.
     * @param key a pair of either containers or Muids to include
     * @param change an optional bundler to put this change into
     * @returns a promise that resolves to the Muid for the exclusion
     */
    exclude(key: [Container, Container], meta?: Meta): Promise<Muid>;
    /**
     * If the pair set has a key or not.
     * @param key array of 2 muids or containers
     * @param asOf optional timestamp to look back to
     * @returns a promise that resolves to a boolean, true if the key is included, false if not
     */
    contains(key: [Muid | Container, Muid | Container], asOf?: AsOf): Promise<boolean>;
    reset(toTime?: AsOf, recurse?: any, meta?: Meta): Promise<void>;
    /**
     * The number of items in the pair set.
     * @param asOf optional timestamp to look back to
     * @returns a promise that resolves to the number of entries
     */
    size(asOf?: AsOf): Promise<number>;
    /**
     * All of the pairs in the Pair Set as a set
     * @param asOf optional timestamp to look back to
     * @returns a promise that resolves to a set of pairs [Muid, Muid]
     */
    getPairs(asOf?: AsOf): Promise<Set<Array<Muid>>>;
    /**
     * Generates a JSON representation of the data in the pair set.
     * Mostly intended for demo/debug purposes.
     * @param indent true to pretty print (not yet implemented)
     * @param asOf optional timestamp to look back to
     * @param seen (internal use only! This prevents cycles from breaking things)
     * @returns a JSON string
     */
    toJson(indent?: number | boolean, asOf?: AsOf, seen?: Set<string>): Promise<string>;
}