UNPKG

@burglekitt/gmt

Version:

Temporal-based date and time utilities with timezone support and polyfill integration

github.com/burglekitt/gmt

burglekitt/gmt

25 lines (24 loc) • 1.46 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
/** * Return the overlapping span of two time intervals, or null when they do not overlap. * * - Uses `Temporal.PlainTime.compare` for comparison. * - Adjacent intervals (e.g. `aEnd === bStart`) share one instant and DO overlap. * - Returns `null` if either interval is invalid (`start > end`). * - Returns `null` on invalid input (wrong type, malformed strings). * * @param aStart ISO 8601 time string for the first interval start * @param aEnd ISO 8601 time string for the first interval end * @param bStart ISO 8601 time string for the second interval start * @param bEnd ISO 8601 time string for the second interval end * @returns `{ start, end }` with the overlapping span, or null on invalid input / no overlap * * @example intervalIntersectionTime("09:00:00", "17:00:00", "12:00:00", "18:00:00") // { start: "12:00:00", end: "17:00:00" } * @example intervalIntersectionTime("09:00:00", "17:00:00", "17:00:00", "18:00:00") // { start: "17:00:00", end: "17:00:00" } * @example intervalIntersectionTime("09:00:00", "17:00:00", "18:00:00", "20:00:00") // null * @example intervalIntersectionTime("09:00:00", "17:00:00", "10:00:00", "11:00:00") // { start: "10:00:00", end: "11:00:00" } * @example intervalIntersectionTime("invalid", "17:00:00", "12:00:00", "18:00:00") // null */ export declare function intervalIntersectionTime(aStart: string, aEnd: string, bStart: string, bEnd: string): { start: string; end: string; } | null;