Type Alias ArrGroupByCallbackFn<T>

ArrGroupByCallbackFn: (
    value: T,
    index: number,
    array: ArrayLike<T>,
) => string | number | symbol

Callback function type for arrGroupBy

Type Parameters

T
Identifies the base type of array elements

Type Declaration

- (value: T, index: number, array: ArrayLike<T>): string | number | symbol
- Parameters
  - value: T
  - index: number
  - array: ArrayLike<T>
  Returns string | number | symbol