import { Base64KeyHash, PublicKey } from "./types";
export interface Entity {
    publicKey: PublicKey;
    url?: string;
}
export type EntityMap = Map<Base64KeyHash, Entity>;
export interface Quorum {
    isQuorum(present: Set<Base64KeyHash>): boolean;
}
export interface Policy {
    logs: EntityMap;
    witnesses: EntityMap;
    quorum: Quorum;
}
export declare class QuorumSingle implements Quorum {
    private readonly w;
    constructor(w: Base64KeyHash);
    isQuorum(present: Set<Base64KeyHash>): boolean;
    get witness(): Base64KeyHash;
}
export declare class QuorumKofN implements Quorum {
    private readonly subQuorums;
    private readonly k;
    constructor(subQuorums: Quorum[], k: number);
    isQuorum(present: Set<Base64KeyHash>): boolean;
    get members(): readonly Quorum[];
    get threshold(): number;
}
export declare function isQuorumSingle(q: Quorum): q is QuorumSingle;
export declare function isQuorumKofN(q: Quorum): q is QuorumKofN;