import type { Nullable } from '../../utilities/index.js';
import Logger from './Logger.js';
import type { LogFacets, LogLevel } from '../lib/types.js';
export default class JsonLogger extends Logger {
    protected format(level: LogLevel, timestamp: number, message: string, facets?: Nullable<LogFacets>): string;
}
//# sourceMappingURL=JsonLogger.d.ts.map