eslint.js

var DEFAULT_TOTAL = 10;

var total = 5;

function getTotal() {
    "use strict";

    if (!total) {
        var total = DEFAULT_TOTAL;
    }

    return total;
}

console.log('Total:', getTotal());


hoisting.js
   3:5   error    'total' is assigned a value but never used      no-unused-vars
   8:10  error    'total' used outside of binding context         block-scoped-var
   8:10  warning  'total' was used before it was defined          no-use-before-define
   9:13  error    'total' is already declared in the upper scope  no-shadow
  12:12  error    'total' used outside of binding context         block-scoped-var