Storybook: Warnings about missing `selectedKind` and `selectedStory`

[edoroshenko]

Steps to reproduce:

1. Go through installation guide (https://storybook.js.org/basics/slow-start-guide/)
2. Open http://localhost:9001/ (without query string!)
3. Open console

Result:

Expected result: clean console.

Additional information:
These warnings don't break the app, but add some extra noise, that sometimes confuses.
Apparently the problem is here: https://github.com/storybooks/storybook/blob/a9944e1533de79ce4a1a2fd8d2b25aa450998147/app/react/src/client/preview/init.js#L7
Probably it's not a good idea to run init function before stories had been added, or if it's an acceptable case, then selectedKind and selectedStory props of Stories component should become optional.

[bellomimarc]

I have the same issue.
Prev version (no issues) : 3.1.7
Actualy version (with issue): 3.2.3

[Hypnosphi]

Looks like we just should select the first story of the first kind by default. Feel free to file a PR

[kaiyoma]

Yup, seeing this error too in Storybook 3.2.3. Also seeing an error about the prop-types package:

Warning: Accessing PropTypes via the main React package is deprecated. Use the prop-types package from npm instead.

[danielsneijers]

Is the issue still open? I'd like to take a shot at this one.

[kaiyoma]

I just ran into it this weekend after upgrading to the newest Storybook (and doing a clean install), so I believe it's still an issue.

[danielsneijers]

Cool, I'll check it out and try to make fix