When using `react-highlight/lib/optimized`, I get `_highlight2.default.registerLanguage is not a function`

When using the following import:

```
import Highlight from "react-highlight/lib/optimized";
```

It gives the following error:

```
TypeError: _highlight2.default.registerLanguage is not a function
```

This did not happen using `0.12.0`, but happens with `0.14.0`.

I can temporarily fix it using:

```
import Highlight from "react-highlight";
```

I tested this with highlight.js `10.5.0` and `10.6.0`