subBusinessDays.d.ts 1.4 KB

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  1. import type { ContextOptions, DateArg } from "./types.js";
  2. /**
  3. * The {@link subBusinessDays} function options.
  4. */
  5. export interface SubBusinessDaysOptions<DateType extends Date = Date>
  6. extends ContextOptions<DateType> {}
  7. /**
  8. * @name subBusinessDays
  9. * @category Day Helpers
  10. * @summary Subtract the specified number of business days (mon - fri) from the given date.
  11. *
  12. * @description
  13. * Subtract the specified number of business days (mon - fri) from the given date, ignoring weekends.
  14. *
  15. * @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).
  16. * @typeParam ResultDate - The result `Date` type, it is the type returned from the context function if it is passed, or inferred from the arguments.
  17. *
  18. * @param date - The date to be changed
  19. * @param amount - The amount of business days to be subtracted.
  20. * @param options - An object with options
  21. *
  22. * @returns The new date with the business days subtracted
  23. *
  24. * @example
  25. * // Subtract 10 business days from 1 September 2014:
  26. * const result = subBusinessDays(new Date(2014, 8, 1), 10)
  27. * //=> Mon Aug 18 2014 00:00:00 (skipped weekend days)
  28. */
  29. export declare function subBusinessDays<
  30. DateType extends Date,
  31. ResultDate extends Date = DateType,
  32. >(
  33. date: DateArg<DateType>,
  34. amount: number,
  35. options?: SubBusinessDaysOptions<ResultDate> | undefined,
  36. ): ResultDate;