/**
 * @category Log Level
 */
export declare class LogLevel {
    private currentLevel;
    constructor(initial?: number);
    set(level?: number | null): boolean;
    get(): number;
    enableLevel(level: number): boolean;
    enableLevels(levels: number[]): boolean;
    disableLevel(level: number): boolean;
    disableLevels(levels: number[]): boolean;
}