import { BaseService } from '../base.service';
import { PusherModuleOptions } from '../interfaces';
import { HttpClient } from '../http-client';
import { WebhookRequest, WebhookData, WebhookEvent, WebhookToken } from '../interfaces';
export declare class WebhookService extends BaseService {
    constructor(options: PusherModuleOptions, httpClient: HttpClient);
    isValid(webhookRequest: WebhookRequest, additionalTokens?: WebhookToken[]): boolean;
    getData(webhookRequest: WebhookRequest): WebhookData;
    getEvents(webhookRequest: WebhookRequest): WebhookEvent[];
    getTime(webhookRequest: WebhookRequest): Date;
    private validateSignature;
    private constantTimeEquals;
}