export type LogLevel = 'error' | 'warn' | 'info' | 'debug';
export declare const LOG_LEVELS: Record<LogLevel, number>;
export interface Logger {
    error(...args: any[]): void;
    warn(...args: any[]): void;
    info(...args: any[]): void;
    debug(...args: any[]): void;
}
export declare class DefaultLogger implements Logger {
    private _level;
    constructor(level?: LogLevel);
    error(...args: any[]): void;
    warn(...args: any[]): void;
    info(...args: any[]): void;
    debug(...args: any[]): void;
}