intervalToDuration.mjs 2.3 KB

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  1. import { add } from "./add.mjs";
  2. import { differenceInDays } from "./differenceInDays.mjs";
  3. import { differenceInHours } from "./differenceInHours.mjs";
  4. import { differenceInMinutes } from "./differenceInMinutes.mjs";
  5. import { differenceInMonths } from "./differenceInMonths.mjs";
  6. import { differenceInSeconds } from "./differenceInSeconds.mjs";
  7. import { differenceInYears } from "./differenceInYears.mjs";
  8. import { toDate } from "./toDate.mjs";
  9. /**
  10. * @name intervalToDuration
  11. * @category Common Helpers
  12. * @summary Convert interval to duration
  13. *
  14. * @description
  15. * Convert a interval object to a duration object.
  16. *
  17. * @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).
  18. *
  19. * @param interval - The interval to convert to duration
  20. *
  21. * @returns The duration object
  22. *
  23. * @example
  24. * // Get the duration between January 15, 1929 and April 4, 1968.
  25. * intervalToDuration({
  26. * start: new Date(1929, 0, 15, 12, 0, 0),
  27. * end: new Date(1968, 3, 4, 19, 5, 0)
  28. * })
  29. * // => { years: 39, months: 2, days: 20, hours: 7, minutes: 5, seconds: 0 }
  30. */
  31. export function intervalToDuration(interval) {
  32. const start = toDate(interval.start);
  33. const end = toDate(interval.end);
  34. const duration = {};
  35. const years = differenceInYears(end, start);
  36. if (years) duration.years = years;
  37. const remainingMonths = add(start, { years: duration.years });
  38. const months = differenceInMonths(end, remainingMonths);
  39. if (months) duration.months = months;
  40. const remainingDays = add(remainingMonths, { months: duration.months });
  41. const days = differenceInDays(end, remainingDays);
  42. if (days) duration.days = days;
  43. const remainingHours = add(remainingDays, { days: duration.days });
  44. const hours = differenceInHours(end, remainingHours);
  45. if (hours) duration.hours = hours;
  46. const remainingMinutes = add(remainingHours, { hours: duration.hours });
  47. const minutes = differenceInMinutes(end, remainingMinutes);
  48. if (minutes) duration.minutes = minutes;
  49. const remainingSeconds = add(remainingMinutes, { minutes: duration.minutes });
  50. const seconds = differenceInSeconds(end, remainingSeconds);
  51. if (seconds) duration.seconds = seconds;
  52. return duration;
  53. }
  54. // Fallback for modularized imports:
  55. export default intervalToDuration;