Upgrade with-flow example to Flow version 0.53.0

[nwshane]

Flow now has better support for React. We should upgrade the with-flow example to use the new version of flow.

Also, I don't know much about adding flow type support to libraries, but it doesn't seem like Next JS has flow types built in... would this be something worth adding?

• [ x] I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior

In examples/with-flow/components/layout.js, we can change the children prop to be a required property, and change the value to React.Node. There are likely other changes that could be made - we can run flow-upgrade as described here to see what changes need to be made.

Current Behavior

with-flow example uses old flow version.

[timneutkens]

Also, I don't know much about adding flow type support to libraries, but it doesn't seem like Next JS has flow types built in... would this be something worth adding?

The flow types are held in flow-typed. We're not planning to add them to next in the short term.

[matiasfha]

I want to take this issue.

[timneutkens]

Feel free to @matiasfh 🙏