reordering array using ES2015 array spread operator

array-spread-reordering.js

const reorderArray = (event, originalArray) => {
    const movedItem = originalArray.find((item, index) => index === event.oldIndex);
    const remainingItems = originalArray.filter((item, index) => index !== event.oldIndex);
  
    const reorderedItems = [
        ...remainingItems.slice(0, event.newIndex),
        movedItem,
        ...remainingItems.slice(event.newIndex)
    ];
  
    return reorderedItems;
}

The code is really elegant, well done.