chris-cornell

import { useState, useMemo, useCallback } from 'react';

function getNextIndex(curr, len, shouldLoop) {
  if (curr === len - 1) return shouldLoop ? 0 : curr;
  return curr + 1;
}

function getPrevIndex(curr, len, shouldLoop) {
  if (curr === 0) return shouldLoop ? len - 1 : 0;
  return curr - 1;