[QUESTION] null values are objects?

When having this code:

``` javascript
// my-program.js
var output = nopt({
        val: [Number, null]
    }, {}, process.argv, 2);
```

then attempting this cli command:

``` terminal
$ node my-program.js
```

gives me:

``` javascript
var output = { "val" : null};
```

Which is okay. However, I dont think the following should happen, should it?:

```
output.val === null  // => false
```
