import { Logger } from './logger';
import { Level } from './level';
import { Vault } from './vault';
import { LogEnhancer } from './log-enhancer';
export declare class LoggerBase extends Logger {
    protected readonly vaults: Vault[];
    protected readonly logEnhancers: LogEnhancer[];
    constructor(vaults: Vault[], logEnhancers?: LogEnhancer[]);
    error(message: unknown, metadata?: object): void;
    warn(message: unknown, metadata?: object): void;
    info(message: unknown, metadata?: object): void;
    debug(message: unknown, metadata?: object): void;
    trace(message: unknown, metadata?: object): void;
    private log;
    metadata(metadata: object): Logger;
    tag(tag: string): Logger;
    data(data: unknown): Logger;
    setLevel(level: Level): void;
}