Poi can easily launch an index.js file simply by running the poi command. This will launch a dev-server and automatically reload whenever you make changes. You can also npm install any package you need and import it right away.
Install:
npm install -g poi
Code:
// src/index.js import {Observable} from ‘rxjs‘; Observable.intervable(1000).subscribe( i = > document.getElementById("app").innerHTML = ` <h1>{i}</h1> ` )
Run:
poi src/index --port 3000