text: const {clipboard} = require('electron')
  
  const copyBtn = document.getElementById('copy-to')
  const copyInput = document.getElementById('copy-to-input')
  
  copyBtn.addEventListener('click', () => {
    if (copyInput.value !== '') copyInput.value = ''
    copyInput.placeholder = 'コピーされました！　ここに貼り付けてみましょう。'
    clipboard.writeText('Electron デモ！')
  })
  