@native("React.Component")
abstract class Component<P, S>() : ReactElement {
    /**
     * Warning : Object prototype will be lost
     */
    @native("setState")
    fun setState(state: dynamic):Unit

    fun setStatePartial(init: StateBuilder<S>.()->Unit):Unit {
        val builder = StateBuilder<S>()
        builder.init()
        setState(builder.toJsObject())
    }
}

class App : Component<AppProps, AppState>() {
}

fun main(...) {
	val app:App()
	
	// When I inspect app, the setStatePartial is not in parent prototype
}