self-recursive ES modules 🤯

instructions.md

1. Create a new Node package (an empty folder with a package.json will do), and set "type": "module" in it.

2. Create an index.js file with this content:

   export function amaze() {
     console.log("modules importing themselves? wow");
   }
   
   import { amaze as wow } from './index.js';
   
   wow();

3. Invoke it by running node index.js. It will work just fine and log the string.

4. Notice that module imports and exports are static, and get handled before any of the actual class body runs. So you can import from yourself at the top of a module, but any initialization will not have happened yet:

   import { amaze as wow, neat as cool } from './index.js';
   wow(); // works, but only because `function`s are hoisted
   console.log(cool); // 💥 "ReferenceError: Cannot access 'wow' before initialization"
   
   export function amaze() {
     console.log("modules importing themselves? wow");
   }
   
   export const neat = "totally neat";

   In other words, it works exactly like if you tried to do console.log(neat) at the same point in the file.