import { AttestationRequest } from './IPv8API';
import { IPv8Service } from './IPv8Service';
import { Attribute } from './types/Attribute';
import { IAttesterService, NonStagedRequestCallback, QueuedAttestation } from './types/IAttesterService';
export declare class AttesterService implements IAttesterService {
    private ipv8service;
    private timeInMillis;
    private queue;
    private listeners;
    constructor(ipv8service: IPv8Service, timeInMillis?: () => number);
    stop(): this;
    stageAttestation(mid_b64: string, attribute: Attribute, validUntil: number): void;
    listStagedAttestations(mid_b64: string): QueuedAttestation[];
    onNonStagedRequest(callback: NonStagedRequestCallback): void;
    /** Check for a valid attestation in the queue, then attest and remove it. */
    protected onAttestationRequest(req: AttestationRequest): Promise<any>;
    protected handleNonStagedRequest(req: AttestationRequest): void;
    protected awaitLoop(): void;
    protected getIfValid(mid_b64: string, attribute_name: string): QueuedAttestation | null;
    protected get(mid_b64: string): QueuedAttestation[];
    protected remove(mid_b64: string, attribute_name: string): void;
    protected put(mid_b64: string, item: QueuedAttestation): void;
    protected removeInvalid(mid_b64: string): void;
}