Function transferArrayItem

src/cdk/drag-drop/drag-utils.ts:40–52

(
  currentArray: T[],
  targetArray: T[],
  currentIndex: number,
  targetIndex: number,
)

 * @param targetIndex Index at which to insert the item.
 */
export function transferArrayItem<T = any>(
  currentArray: T[],
  targetArray: T[],
  currentIndex: number,
  targetIndex: number,
): void {
  const from = clamp(currentIndex, currentArray.length - 1);
  const to = clamp(targetIndex, targetArray.length);

  if (currentArray.length) {
    targetArray.splice(to, 0, currentArray.splice(from, 1)[0]);
  }
}

/**
 * Copies an item from one array to another, leaving it in its