We still need getters to get the live value.

```js
export var x = 42;
export function inc() {
  x++;
}
```

```js
import {x, inc} from 'file-above';
assert(x === 42);
inc();
assert(x === 43);
x = 0;
assert(x === 0);
inc();
assert(x === 1);
```