useLayoutEffect_ArrayDep.js

const ArrayDep = () => {
    const [randomNumber, setRandomNumber] = useState(0)
    const [effectLogs, setEffectLogs] = useState([])
  
    useLayoutEffect(
      () => {
        setEffectLogs(prevEffectLogs => [...prevEffectLogs, 'effect fn has been invoked'])
      },
      [randomNumber]
    )
  
    return (
      <div>
        <h1>{randomNumber}</h1>
        <button
          onClick={() => {
            setRandomNumber(Math.random())
          }}
        >
          Generate random number!
        </button>
        <div>
          {effectLogs.map((effect, index) => (
            <div key={index}>{'🍔'.repeat(index) + effect}</div>
          ))}
        </div>
      </div>
    )
  }