export declare namespace logger {
    /**
     * 日志等级，默认为警告和错误
     */
    type leve = "silent" | "error" | "warn" | "info" | "debug";
    let logLeve: leve;
    function debug(tag: string, content: any): void;
    /**
     * 信息
     * @param tag
     * @param content
     */
    function info(tag: string, content: any): void;
    /**
     * 警告
     * @param tag
     * @param content
     */
    function warn(tag: string, content: any): any;
    /**
     * 错误
     * @param tag
     * @param content
     */
    function error(tag: string, content: any, err?: Error): string;
}