/**
 * return in below formats:
 *
 * | Resolution | Format |
 * |-----------:|:-------|
 * | date       | YYYY-MM-DD |
 * | minute     | YYYY-MM-DD HH:MM |
 * | second     | YYYY-MM-DD HH:MM:SS |
 * | millisecond| YYYY-MM-DD HH:MM:SS.sss |
 */
export declare function getTimestamp(time?: Date | number): string;
export declare namespace getTimestamp {
    type Resolution = 'date' | 'minute' | 'second' | 'millisecond';
    let resolution: Resolution;
}
export declare function d2(n: number): string;
export declare function d3(n: number): string;