import { Connection } from ".";
export declare class SpectralError extends Error {
    isSpectralError: boolean;
    constructor(message: string);
}
export declare class ConnectionError extends SpectralError {
    connection: Connection;
    constructor(connection: Connection, message: string);
}
export declare const isSpectralError: (payload: unknown) => payload is SpectralError;
export declare const isConnectionError: (payload: unknown) => payload is ConnectionError;