import type { NextFunction } from '@feathersjs/feathers';
import type { Application } from '@feathersjs/express';
import type { Server as HttpServer } from 'http';
import { SyncServiceOptions } from './sync-service.js';
import { SyncServiceInfo } from '@kalisio/feathers-automerge';
export * from './utils.js';
export type AppSetupHookContext = {
    app: Application;
    server: HttpServer;
};
export interface SyncOptionsBase extends SyncServiceOptions {
    directory: string;
    serverId: string;
    syncServicePath: string;
    getInitialDocuments?: (app: Application) => Promise<SyncServiceInfo[]>;
}
export interface SyncServerOptions extends SyncOptionsBase {
    authenticate: (app: Application, accessToken: string | null) => Promise<boolean>;
    syncServerWsPath?: string;
}
export interface SyncClientOptions extends SyncOptionsBase {
    getAccessToken?: (app: Application) => Promise<string>;
    syncServerUrl?: string;
}
export type SyncOptions = SyncServerOptions | SyncClientOptions;
export declare function validateSyncServerOptions(options: SyncOptions): options is SyncServerOptions;
export declare function handleWss(options: SyncServerOptions): (context: AppSetupHookContext, next: NextFunction) => Promise<void>;
export declare function handleWsClient(options: SyncClientOptions): (context: AppSetupHookContext, next: NextFunction) => Promise<void>;
export declare function automergeServer(options: SyncOptions): (app: Application) => void;