Module "array/get-previous-wrap-around"

getPreviousWrapAround

• getPreviousWrapAround<T, A>(array: A, element: T): A extends Readonly<NonEmptyArray<T>> ? T : T | undefined

• Convenience function to get the previous element in this array after some element, wrapping around if it would walk off the array.

  see

  getWrapAround

  Type parameters

  • T

  • A: ReadonlyArray<T>

  Parameters

  • array: A

    The array to get elements in.

  • element: T

    The element in the array to get the previous element before.

  Returns A extends Readonly<NonEmptyArray<T>> ? T : T | undefined

  The previous element in the array after the element, or wraps to the beginning if that element is the last element.