what is the value of `a` ?

scope.js

debugger;

var a; 

if (true) {
  a = {a: 2};
  function a() {}
  a.ot = '9'; 
  a = {a: 4};
  console.log('1', a);
}

console.log('2', a);

// relevent question on stackoverflow
// https://stackoverflow.com/questions/58619924/confused-about-function-declaration-in
// https://stackoverflow.com/questions/31419897/what-are-the-precise-semantics-of-block-level-functions-in-es6