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boc/cc-frontend/node_modules/date-fns/esm/subQuarters/index.js
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JavaScript

import toInteger from "../_lib/toInteger/index.js";
import addQuarters from "../addQuarters/index.js";
import requiredArgs from "../_lib/requiredArgs/index.js";
/**
* @name subQuarters
* @category Quarter Helpers
* @summary Subtract the specified number of year quarters from the given date.
*
* @description
* Subtract the specified number of year quarters from the given date.
*
* @param {Date|Number} date - the date to be changed
* @param {Number} amount - the amount of quarters to be subtracted. Positive decimals will be rounded using `Math.floor`, decimals less than zero will be rounded using `Math.ceil`.
* @returns {Date} the new date with the quarters subtracted
* @throws {TypeError} 2 arguments required
*
* @example
* // Subtract 3 quarters from 1 September 2014:
* const result = subQuarters(new Date(2014, 8, 1), 3)
* //=> Sun Dec 01 2013 00:00:00
*/
export default function subQuarters(dirtyDate, dirtyAmount) {
requiredArgs(2, arguments);
var amount = toInteger(dirtyAmount);
return addQuarters(dirtyDate, -amount);
}