eddiezane/hello.js

## hello.js
export default () => {
  const h1 = document.createElement('h1')
  h1.innerText = 'Hello, World!'
  document.body.appendChild(h1)
}

## index.html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title></title>
</head>
<body>
  <script src="/index.js" type="module"></script>
</body>
</html>

## index.js
import hello from '/hello.js'

hello()
	export default () => {
	const h1 = document.createElement('h1')
	h1.innerText = 'Hello, World!'
	document.body.appendChild(h1)
	}
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title></title>
	</head>
	<body>
	<script src="/index.js" type="module"></script>
	</body>
	</html>