Using Wrapped Provider with React.createElement throws TypeError: Object [object Object] has no method 'toUpperCase'

[kevzettler]

Following the example here
https://github.com/rackt/react-redux#react-router-013
I'm using a wrapped provider on my React Router handler

 <Provider store={store}>
     {() => <Handler {...ReactProps} routerState={routerState} />}
</Provider>

If I pass this to React.renderToString it renders correctly.

if I pass it to React.createElement it throws an error
TypeError: Object [object Object] has no method 'toUpperCase'

site-0 (err): 2015-08-27 01:32 +00:00: TypeError: Object [object Object] has no method 'toUpperCase'
site-0 (err):     at autoGenerateWrapperClass (/opt/site/node_modules/react/lib/ReactDefaultInjection.js:53:19)
site-0 (err):     at Object.getComponentClassForElement (/opt/site/node_modules/react/lib/ReactNativeComponent.js:59:49)
site-0 (err):     at validatePropTypes (/opt/site/node_modules/react/lib/ReactElementValidator.js:361:45)
site-0 (err):     at Object.ReactElementValidator.createElement (/opt/site/node_modules/react/lib/ReactElementValidator.js:408:5)

I'm using some 3rd party middleware that passes the wrapped handler to
React.renderToString(React.createElement())

I suspect this is because React is trying to get a type for the anonymous function {() => }

Do I have to use an anonymous function here? can I wrap it in some other component or something?

[gaearon]

Can you please show code in some more context? It would help to see the specific failing line completely.

[gaearon]

<Provider>...</Provider> is already an element. Passing this to createElement doesn't really make sense to me.

[gaearon]

I suspect this is because React is trying to get a type for the anonymous function {() => }

This has nothing to do with what's inside <Provider> I think. Doing React.render(React.createElement(<div />)) will also fail because <div /> is already an element.

I'm using some 3rd party middleware that passes the wrapped handler to
React.renderToString(React.createElement())

Um, why? :-)