Config.instanceOf is not validating

[AngeloYoun]

Setting config.instanceOf on a component state or prop doesn't properly validate. When adding logs to the function, the returned function is never ran.

Class Component extends JSXComponent{}

Component.PROPS = {
    foo: Config.instanceOf(class Foo{})
}

<Component foo={'hello'} />

does not throw an error.

[AngeloYoun]

Thanks :)