export declare enum LogLevel {
    Debug = 1,
    Info = 2,
    Warn = 3,
    Error = 4
}
export declare abstract class Logger {
    private static logLevel;
    static setLogLevel(level: LogLevel): void;
    static error(...args: any[]): void;
    static warn(...args: any[]): void;
    static info(...args: any[]): void;
    static debug(...args: any[]): void;
    static debugGroupCollapsed(...args: any): void;
    static debugGroup(...args: any): void;
    static debugGroupEnd(): void;
}