message: chore: check binding.value instead of just binding object
diff: @@ -131,8 +131,8 @@ var app = new Vue({
  // before focusing on the input field.
  // https://vuejs.org/guide/custom-directive.html
  directives: {
  - 'todo-focus': function (el, value) {
  - if (value) {
  + 'todo-focus': function (el, binding) {
  + if (binding.value) {
  el.focus()
  }
  }
  