export declare class Logger {
    private static _logger;
    private static get logger();
    static info(message: string, details?: any): void;
    static warn(message: string, details?: any): void;
    static error(message: string, details?: any): void;
    static debug(message: string, details?: any): void;
    static verbose(message: string, details?: any): void;
    private static levelToLabelToDuration;
    static verboseDuration(label: string): void;
    private static withDuration;
}