Function insertArrayElement

insertArrayElement<T>(array: T[], index: number, element: T): T[]
Returns a new array with the new given element inserted at the specified index.
Type Parameters
- T
Parameters
- array: T[]
  The array to insert the element in.
- index: number
  The target index of the new element.
- element: T
  The element to insert into the array.
Returns T[]