Write a closure that prints Red and Green alternatively on each call.

redGreenClosure.js

const rg = (function () {
  let initialValue = 'red';
  return function inner() {
    console.log(initialValue);
    if(initialValue === 'red') {
      initialValue = 'green';
    } else if (initialValue === 'green') {
      initialValue = 'red';
    }
  }
})();

rg(); // red
rg(); // green
rg(); // red
rg(); // green