/**
 * Returns the `Date` before the given `date` by the `Duration`.
 * @param duration The `Duration` to get the `Date` before the given `date` by.
 * @param date The `Date` to get the `Date` before by the `Duration`.
 *
 * @example
 * ```typescript
 * const date = new Date();
 * console.log(date); // 2023-09-01T00:00:00.000Z
 * before(years(2), date); // => 2021-09-01T00:00:00.000Z
 * before(years(2) + months(3), date); // => 2021-06-01T00:00:00.000Z
 * ```
 */
declare const before: (duration: bigint, date: number | Date) => Date;
export default before;
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