1 x undefined? true
   2 TypeError: Cannot read property "foo" from undefined
   3 TypeError: Cannot set property "bar" of undefined
   4 TypeError: Cannot read property "1" from undefined
   5 TypeError: Cannot set property "0" of undefined
   6 TypeError: Cannot read property "func" from undefined
   7 TypeError: Cannot delete property "0" of undefined
   8 TypeError: Cannot delete property "foo" of undefined
   9 TypeError: undefined is not an Object
  10 TypeError: Cannot apply "with" to undefined