1:  // In a Node.js environment.

   2:  global.globalVar = "I'm global (Node.js)!";  // Explicitly add to global scope with `global.`

   3:  var globalVarWithVar = "Also global, but with var";

   4:  let globalLet = "Global let (NodeJS)"

   5:  

   6:  console.log(global.globalVar); // Output: I'm global (Node.js)! (accessing via `global`)

   7:  console.log(globalVarWithVar); // Output: Also global, but with var (directly)

   8:  console.log(globalLet); // Output: Global let (NodeJS)

   9:  

  10:  function myFunction() {

  11:      console.log(globalVarWithVar); // Also global, but with var

  12:  }