'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

/**
 * @name constructFrom
 * @category Generic Helpers
 * @summary Constructs a date using the reference date and the value
 *
 * @description
 * The function constructs a new date using the constructor from the reference
 * date and the given value. It helps to build generic functions that accept
 * date extensions.
 *
 * It defaults to `Date` if the passed reference date is a number or a string.
 *
 * @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).
 *
 * @param date - The reference date to take constructor from
 * @param value - The value to create the date
 *
 * @returns Date initialized using the given date and value
 *
 * @example
 * import { constructFrom } from 'date-fns'
 *
 * // A function that clones a date preserving the original type
 * function cloneDate<DateType extends Date(date: DateType): DateType {
 *   return constructFrom(
 *     date, // Use contrustor from the given date
 *     date.getTime() // Use the date value to create a new date
 *   )
 * }
 */
function constructFrom(date, value) {
  if (date instanceof Date) {
    return new date.constructor(value);
  } else {
    return new Date(value);
  }
}

exports.constructFrom = constructFrom;
exports.default = constructFrom;
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