import type Rollbar from 'rollbar';
import type { TransportStreamOptions } from 'winston-transport';
import Transport from 'winston-transport';
/** Winston transport that forwards error-level log messages to Rollbar. */
export declare class RollbarTransport extends Transport {
    protected readonly rollbar?: Rollbar;
    constructor(opts: TransportStreamOptions, rollbar?: Rollbar);
    log(info: {
        message?: string;
    }, next: () => void): void;
}
//# sourceMappingURL=RollbarTransport.d.ts.map