Issue Description:

```
public override func hasItems(in: Store) -> Bool {
guard let items = store.storage?.items else { return false }
let hasNoItems: Bool = items.isEmpty
return hasNoItems == false
}
```
This takes 400ms to type-check.

```
public override func hasItems(in: Store) -> Bool {
guard let items = store.storage?.items else { return false }
return !items.isEmpty
}
```
This takes less than 10ms to type-check.

Boolean comparisons are extremely slow when compiling swift. It's well known that swift is a slow language, but this seems extreme.