app.ts

import Button from "./components/Button"

const appElement = document.getElementById('app')

const button = new Button('My Button')
// click handler assignation :
button.onClick = () => {
  alert('My Button was clicked !')
}

function renderApp() {
  if (appElement !== null) {
    appElement.innerHTML = ''
    button.render(appElement)
  }
}

renderApp()