How to use the flying-squid.getXpLevel function in flying-squid

action (args) {
      const isLevel = !!args[2]
      const amt = parseInt(args[1])
      const user = args[3] ? serv.getPlayer(args[3]) : player
      if (!user) return args[3] + ' is not on this server!'

      if (!isLevel) {
        user.setXp(user.xp + amt)
        player.chat('Gave ' + user.username + ' ' + amt + ' xp')
      } else {
        const currLevel = getXpLevel(player.xp)
        const baseCurrLevel = getBaseXpFromLevel(currLevel)
        const extraXp = player.xp - baseCurrLevel
        user.setXp(getBaseXpFromLevel(currLevel + amt) + extraXp)
        player.chat('Gave ' + user.username + ' ' + amt + ' levels')
      }
    }
  })

player.setXp = (xp, { setLevel = true, setDisplay = true, send = true } = {}) => {
    player.xp = xp
    if (setLevel) player.level = getXpLevel(xp)
    if (setDisplay) player.displayXp = distanceToXpLevel(xp)
    if (send) player.sendXp()
  }