It is possible to create a Redux store directly with the extension (without importing Redux in your app) when you need it for debugging only. It's not about the store enhancer or compose helper as it's usually applied. See the docs, the example and the blog post for more details. That was introduces for more than 2 years, but doesn't seem anybody using it. Now with React hooks, that example wouldn't make much sense. One can move that inside an integration including redux for development only, like reinspect does.

The suggestion is to remove that part in next major release. I'll add a deprecation waring in the next minor version.

If you're using it, please let me know about your use case.