Material-ui: withTheme not working with REACT 16

[leantide]

• [x] I have searched the issues of this repository and believe that this is not a duplicate, although https://github.com/callemall/material-ui/issues/8580 is certainly related and could be the same root cause.

Expected Behavior

Am able to use withTheme in my React 16 application

Current Behavior

When using withTheme from [email protected] with React 16, React gives the following warning, which is fatal to the execution of my app.

Warning: Functions are not valid as a React child. This may happen if you return a Component instead of from render. Or maybe you meant to call this function rather than return it.

Steps to Reproduce

Here is an example of how I am using withTheme:

const MyComponent = props => {
// use props.theme.palette.text.primary
};
export default withTheme(MyComponent);

Environment

Issue did not exist when using withTheme with React 15. Issue occurs post-upgrade of React.

| Tech | Version |
|--------------|---------|
| Material-UI | 1.0.0-beta.16 |
| React | [email protected], [email protected] |
| browser | Chrome Version 61.0.3163.100 |

[oliviertassinari]

The signature changed:

-export default withTheme(MyComponent);
+export default withTheme()(MyComponent);

[leantide]

Thank you. Must have been brought in with my npm update. Sorry I missed it.