Ways to export modules in nodejs

there are several ways to export modules in nodejs

1. Simplest export
2. Define a global
3. Export by anonymous function
4. Export by named function
5. Export by anonymous object
6. Export by named object
7. Export by anonymous prototype
8. Export by named prototype
9. Export by Json

1. Simplest export

//hello.js
console.log('Hello World');

// app.js
require('hello.js');