Addon-docs: Code missing in docs if CSF story is camelCase'd

[roman-balzer]

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Bug or support request summary

Please provide issue details here - What did you expect to happen? What happened instead?
I'll wrote my stories in the new CSF format, some had a now, containing a single word and some multiple, which I then used camelCase for. For those with camelCase'd names the source code of the story could not be shown. Oddly, camel_Case_With_Underscores did work again. To summarize

export const foo = () => <Component />`  // Works
export const Foo = () => <Component />`  // Works
export const withFoo = () => <Component />`  // Does not work
export const WithFoo = () => <Component />`  // Does not work
export const with_Foo = () => <Component />`  // Oddly works

Steps to reproduce

Just write csf stories with different upper und lower cases

Please specify which version of Storybook and optionally any affected addons that you're running

all versions on 5.2.0-beta.46

Affected platforms

Windows and Chrome

[shilman]

Thanks so much @roman-balzer. Looks like a bug introduced in #7901 or one of its related PRs. Will fix and release in the next 12h.

[shilman]

Egads!! I just released https://github.com/storybookjs/storybook/releases/tag/v5.2.0-rc.1 containing PR #7940 that references this issue. Upgrade today to try it out!

You can find this prerelease on the @next NPM tag.

Closing this issue. Please re-open if you think there's still more to do.