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Create a new node project

npm init

Add a dependency (e.g. lite-server)

npm install lite-server --save-dev

Create an entrypoint:

vim package.json

Make the following changes:

   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "start": "npm run lite",
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "lite": "lite-server"
   },

Run your app:

npm start

Note that npm start will run whatever is in your .scripts.start of your package.json; .main is the entrypoint. For example, let's say .main index.html, and these are its contents:

<html>
<title>Dawgs</title>
<body>
	<h1>I love muh dawg!</h1>
	<p>I really do</p>
	<h2>I love muh cat!</h2>
	<p>but not as much as muh dawg!</p>
</body>
</html>

In that case, the above HTML is displayed on http://localhost:3000 when npm start is run.