import { SWError as SWErrorType } from '@soul-wallet/extension-base/background/KoniTypes';
export declare class SWError extends Error implements SWErrorType {
    errorType: string;
    code: number | undefined;
    data: unknown | undefined;
    constructor(errorType: string, message: string, code?: number, data?: unknown);
    toJSON(): {
        name: string;
        message: string;
        code: number | undefined;
    };
}