export declare class DateUtils {
    static toMySQLDate(date: Date | null): string | null;
    static diffSeconds(a: any, b: any): number;
    static diffMilliseconds(a: any, b: any): number;
    static diffFromNowSeconds(a: any): number;
    static toMysqlFormat(date: any): string;
    static makeDate(date: any): Date;
    private static twoDigits;
}
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