| delete x? false | |
| typeof x = number | |
| delete f? true | |
| typeof f = undefined | |
| delete foo? false | |
| typeof foo = number | |
| delete func? false | |
| typeof func = function | |
| delete foo? false | |
| typeof foo? number | |
| foo = 33 | |
| x in function = local | |
| delete x? = true | |
| x after delete = global | |
| x = global |