Pagination Previous and Next Pattern (React)

pagination.js

const previous = currentIndex => {
  const { items, setActiveId } = this.props
  const index = (currentIndex - 1 + items.length) % items.length
  setActiveId(items[index].id)
}

const next = currentIndex => {
  const { items, setActiveId } = this.props
  const index = (currentIndex + 1) % items.length
  setActiveId(items[index].id)
}