isSameDay.mjs
1.34 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
import { startOfDay } from "./startOfDay.mjs";
/**
* @name isSameDay
* @category Day Helpers
* @summary Are the given dates in the same day (and year and month)?
*
* @description
* Are the given dates in the same day (and year and month)?
*
* @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 dateLeft - The first date to check
* @param dateRight - The second date to check
* @returns The dates are in the same day (and year and month)
*
* @example
* // Are 4 September 06:00:00 and 4 September 18:00:00 in the same day?
* const result = isSameDay(new Date(2014, 8, 4, 6, 0), new Date(2014, 8, 4, 18, 0))
* //=> true
*
* @example
* // Are 4 September and 4 October in the same day?
* const result = isSameDay(new Date(2014, 8, 4), new Date(2014, 9, 4))
* //=> false
*
* @example
* // Are 4 September, 2014 and 4 September, 2015 in the same day?
* const result = isSameDay(new Date(2014, 8, 4), new Date(2015, 8, 4))
* //=> false
*/
export function isSameDay(dateLeft, dateRight) {
const dateLeftStartOfDay = startOfDay(dateLeft);
const dateRightStartOfDay = startOfDay(dateRight);
return +dateLeftStartOfDay === +dateRightStartOfDay;
}
// Fallback for modularized imports:
export default isSameDay;