import { Accumulator, AccumulatorOptions, InputData } from "../interfaces";
/**
 * Base class for accumulator
 */
export declare abstract class BaseAccumulator implements Accumulator {
    constructor(options: AccumulatorOptions);
    abstract setOptions(option: AccumulatorOptions): boolean;
    abstract add(data: InputData, key?: string): Promise<boolean>;
    abstract getDigest(): string;
    abstract getProof(data: string | InputData): Promise<any[]>;
    abstract verify(digest: string, data: string | InputData, proof: any[]): Promise<boolean>;
    abstract contains(data: InputData | string): Promise<boolean>;
    abstract isFull(): boolean;
}