`main.js` has been opted in to Flow's strictest per-file checking, but it now reports two errors under that stricter mode:

```
Unclear type. Using `any`, `Object`, or `Function` types is not safe! [unclear-type]
Sketchy null check on number which is potentially 0. [sketchy-null-number]
```

Resolve both errors so the file type-checks, keeping it under the same strict checking. `meta` is only ever read for its `label` string. `count` is a real count where `0` is a valid value that should still be appended — only a missing (null/undefined) count should be skipped. Don't suppress the errors — fix them.
