hoisting + lazy evaluation

'use strict';

const plus = x => y => x + y;

const multiplyThenPlusWidth = x => y => plusWidth(x * y);
const multiplyByTwoThenPlusWidth = multiplyThenPlusWidth(2);

// plusWidth() not initialised yet
console.log(multiplyByTwoThenPlusWidth(5)); // works??


const main = (() => {
  // User input:
  const w = 3;

  const plusWidth = plus(w);

  console.log(multiplyByTwoThenPlusWidth(5));
})() // iife