export declare const ConnectionStatusEvent: {
    close: "close";
    /** This is a latched error event. It will fire once to signal the start of a error state. */
    connectionError: "connectionError";
    ready: "ready";
    unknown: "unknown";
    /** The worker is applying a backoff. The duration of the backoff in ms is passed as a parameter to any listener */
    backoff: "backoff";
    /** This is an unlatched error event. It will fire multiple times when an error state is encountered. */
    streamError: "streamError";
};
export type ConnectionStatusEventMap = {
    close: void;
    [ConnectionStatusEvent.connectionError]: void;
    [ConnectionStatusEvent.ready]: void;
    [ConnectionStatusEvent.unknown]: void;
    [ConnectionStatusEvent.backoff]: number;
    [ConnectionStatusEvent.streamError]: Error;
};