Support declarative configuration breaks storybook

[kubal5003]

The pull request broke storybook for me.
It won't even open with an exception:
Uncaught SyntaxError: Unexpected token u in JSON at position 0

The code that is generated from register.js file is as follows:

Parsing an Object throws the exception I mentioned above.
Please either fix this issue or rollback those changes.

In the Storybook+DSM integration guide you also mention to always install the latest version in package.json like so:
"@invisionapp/dsm-storybook": "latest",

I think that in light of that kind of bug it might make sense to rethink that approach.

CC: @ByronGuina