import type { EventBus } from '../../core/EventBus';
import type { TransferProvider } from '../../types/transfer';
export declare class TwilioTransferProvider implements TransferProvider {
    private bus;
    private device;
    private call;
    private loading;
    constructor(bus: EventBus);
    connect(token: string, _identity: string): Promise<void>;
    disconnect(): void;
    get active(): boolean;
    private cleanup;
    private loadSdk;
}