children.type === Target may not reliable

[yuxuan]

According to this issue gaearon/react-hot-loader#304, tools/libs such as react-hot-loader that returns proxy components instead of original ones, using children.type === Target would result false. We can use:

const TargetType = <Target />.type;
...
children.type === TargetType; 

to record proxy component type and compare with that.

The problem of this solution is if there are required props in Target component, there will be warnings.

There are also other proposed fixes, such as gaearon/react-proxy#68

[yuxuan]

You can't use children.type.name === 'Target' either. Even thought the component is not been proxied, minify would change function.name.