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851 BTypeScriptView Raw
1/**
2 * @name subQuarters
3 * @category Quarter Helpers
4 * @summary Subtract the specified number of year quarters from the given date.
5 *
6 * @description
7 * Subtract the specified number of year quarters from the given date.
8 *
9 * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
10 *
11 * @param date - The date to be changed
12 * @param amount - The amount of quarters to be subtracted.
13 *
14 * @returns The new date with the quarters subtracted
15 *
16 * @example
17 * // Subtract 3 quarters from 1 September 2014:
18 * const result = subQuarters(new Date(2014, 8, 1), 3)
19 * //=> Sun Dec 01 2013 00:00:00
20 */
21export declare function subQuarters<DateType extends Date>(
22 date: DateType | number | string,
23 amount: number,
24): DateType;