Function toggleListItem

src/utils/jsUtils.ts:13–22

(list: T[], item: T)

}

export function toggleListItem<T>(list: T[], item: T): T[] {
  const itemIndex = list.indexOf(item)
  if (itemIndex === -1) {
    return list.concat(item)
  } else {
    const newList = [...list]
    newList.splice(itemIndex, 1)
    return newList
  }
}

export function shuffle(arr) {
  let i = arr.length