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- "use strict";
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.default = min;
- var _index = _interopRequireDefault(require("../toDate/index.js"));
- var _index2 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
- /**
- * @name min
- * @category Common Helpers
- * @summary Returns the earliest of the given dates.
- *
- * @description
- * Returns the earliest of the given dates.
- *
- * ### v2.0.0 breaking changes:
- *
- * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).
- *
- * - `min` function now accepts an array of dates rather than spread arguments.
- *
- * ```javascript
- * // Before v2.0.0
- * const date1 = new Date(1989, 6, 10)
- * const date2 = new Date(1987, 1, 11)
- * const minDate = min(date1, date2)
- *
- * // v2.0.0 onward:
- * const dates = [new Date(1989, 6, 10), new Date(1987, 1, 11)]
- * const minDate = min(dates)
- * ```
- *
- * @param {Date[]|Number[]} datesArray - the dates to compare
- * @returns {Date} - the earliest of the dates
- * @throws {TypeError} 1 argument required
- *
- * @example
- * // Which of these dates is the earliest?
- * const result = min([
- * new Date(1989, 6, 10),
- * new Date(1987, 1, 11),
- * new Date(1995, 6, 2),
- * new Date(1990, 0, 1)
- * ])
- * //=> Wed Feb 11 1987 00:00:00
- */
- function min(dirtyDatesArray) {
- (0, _index2.default)(1, arguments);
- var datesArray; // `dirtyDatesArray` is Array, Set or Map, or object with custom `forEach` method
- if (dirtyDatesArray && typeof dirtyDatesArray.forEach === 'function') {
- datesArray = dirtyDatesArray; // If `dirtyDatesArray` is Array-like Object, convert to Array.
- } else if (typeof dirtyDatesArray === 'object' && dirtyDatesArray !== null) {
- datesArray = Array.prototype.slice.call(dirtyDatesArray);
- } else {
- // `dirtyDatesArray` is non-iterable, return Invalid Date
- return new Date(NaN);
- }
- var result;
- datesArray.forEach(function (dirtyDate) {
- var currentDate = (0, _index.default)(dirtyDate);
- if (result === undefined || result > currentDate || isNaN(currentDate.getDate())) {
- result = currentDate;
- }
- });
- return result || new Date(NaN);
- }
- module.exports = exports.default;
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