addon-a11y uses React.Fragment without specifying react >=16.2.0

[timothymclane]

Bug or support request summary

Using @​storybook/addon-a11y with Storybook in a React 15 project throws errors as React.Fragment is undefined.

This can be fixed by specifying a minimum React version or removing the Fragment usage in ./components/Report. Given I have some React 15 projects using addon-a11y 3.4.0, I'd prefer removing it altogether.

I'd be happy to make a pull request to address the problem.

Steps to reproduce

1. Start a new React v15 project (I used CRA and installed React and ReactDOM 15.4.0)
2. add Storybook via getstorybook
3. install and enable addon-a11y
4. Storybook now errors in browser.

Repo with issue

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

@​storybook/addon-a11y 3.4.0
@​storybook/react 3.4.0

Affected platforms

• Impacts any project with a React version that doesn't support Fragments

[danielduan]

@timothymclane that'd be great if you can remove them. you're welcome to create a PR.

We do still attempt to support React 15 for the time being.

[Hypnosphi]

Yes, let's remove the Fragment usage

[timothymclane]

Sounds good. I will get my environment set up and make that request.

[Hypnosphi]

Released as 3.4.1