Custom React hook

useCounter.ts

import { useState } from "react";

function useCounter(
  initialCount: number = 0
): [number, () => void, () => void] {
  const [count, setCount] = useState<number>(initialCount);

  function increment() {
    setCount(count + 1);
  }

  function decrement() {
    setCount(count - 1);
  }

  return [count, increment, decrement];
}

export default useCounter;