/**
 * Returns the week number for this date.
 *
 * @author Nick Baicoianu at MeanFreePath: http://www.meanfreepath.com
 *
 * @param dowOffset the day of week the week "starts" on for your locale - it can be from 0 to 6. If dowOffset is 1 (Monday),
 * the week returned is the ISO 8601 week number.
 * @return the week number for this date
 */
export declare function getWeek(date: Date, dowOffset?: number): number;
/**
 * Format date as a string
 * For example `YYYY-mm-dd` will output 2020-01-27
 * @param date
 * @param patternStr
 */
export declare function dateFormat(date: Date, patternStr: string): string;