JSFiddle - React, Tailwind, and code Playground

JavaScript

(function() {
  try {
    foo();
  } catch (ex) {
    alert("ahhhhh, what's going on?!?!?\n\n" + ex.message);
  }

  function foo() {
    alert("I was hoisted to the top of this scope before execution :)");
  }
})();