79 lines
2.3 KiB
JavaScript
79 lines
2.3 KiB
JavaScript
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import { toDate } from "./toDate.mjs";
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/**
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* The {@link areIntervalsOverlapping} function options.
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*/
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/**
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* @name areIntervalsOverlapping
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* @category Interval Helpers
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* @summary Is the given time interval overlapping with another time interval?
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*
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* @description
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* Is the given time interval overlapping with another time interval? Adjacent intervals do not count as overlapping unless `inclusive` is set to `true`.
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*
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* @param intervalLeft - The first interval to compare.
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* @param intervalRight - The second interval to compare.
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* @param options - The object with options
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*
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* @returns Whether the time intervals are overlapping
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*
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* @example
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* // For overlapping time intervals:
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* areIntervalsOverlapping(
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* { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },
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* { start: new Date(2014, 0, 17), end: new Date(2014, 0, 21) }
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* )
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* //=> true
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*
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* @example
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* // For non-overlapping time intervals:
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* areIntervalsOverlapping(
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* { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },
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* { start: new Date(2014, 0, 21), end: new Date(2014, 0, 22) }
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* )
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* //=> false
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*
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* @example
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* // For adjacent time intervals:
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* areIntervalsOverlapping(
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* { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },
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* { start: new Date(2014, 0, 20), end: new Date(2014, 0, 30) }
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* )
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* //=> false
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*
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* @example
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* // Using the inclusive option:
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* areIntervalsOverlapping(
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* { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },
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* { start: new Date(2014, 0, 20), end: new Date(2014, 0, 24) }
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* )
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* //=> false
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*
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* @example
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* areIntervalsOverlapping(
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* { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },
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* { start: new Date(2014, 0, 20), end: new Date(2014, 0, 24) },
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* { inclusive: true }
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* )
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* //=> true
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*/
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export function areIntervalsOverlapping(intervalLeft, intervalRight, options) {
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const [leftStartTime, leftEndTime] = [
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+toDate(intervalLeft.start),
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+toDate(intervalLeft.end),
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].sort((a, b) => a - b);
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const [rightStartTime, rightEndTime] = [
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+toDate(intervalRight.start),
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+toDate(intervalRight.end),
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].sort((a, b) => a - b);
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if (options?.inclusive)
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return leftStartTime <= rightEndTime && rightStartTime <= leftEndTime;
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return leftStartTime < rightEndTime && rightStartTime < leftEndTime;
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}
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// Fallback for modularized imports:
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export default areIntervalsOverlapping;
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