React Typescript

class R<P,S> {
    state:S;
    props:P;

    static instance;
    refs:{ [ref: string]: React.ReactComponent<any, any>; };

    getDOMNode():Element {
        return null
    }

    setProps(nextProps:P, callback?:() => void):void {
        return null
    }

    replaceProps(nextProps:P, callback?:() => void):void {
        return null
    }

    transferPropsTo<C extends React.ReactComponent<P, any>>(target:C):C {
        return null
    }

    setState(nextState:S, callback?:() => void):void {
        return null
    }

    replaceState(nextState:S, callback?:() => void):void {
        return null
    }

    forceUpdate(callback?:() => void):void {
        return null
    }

    constructor(props:P, ...children:any[]) {
        var proto = this.constructor.prototype;
        if (!this.constructor["component"]) {
            proto.displayName = proto.constructor.name;
            delete proto.constructor.prototype.constructor;
            this.constructor["component"] = React["create" + "Class"](proto);
            proto._isReactDescriptor = true;
        }

        var c = this.constructor["component"](props, children);
        this["_context"] = c._context;
        this["_owner"] = c._owner;
        this["_store"] = c._store;
        this["key"] = c.key;
        this["ref"] = c.ref;
        this["type"] = c.type;
        this["props"] = c.props;
        //console.log(this);
    }
}

class A extends R <{name: string; test: boolean; children?}, {secondsElapsed: number}> {
    interval;

    getInitialState() {
        return {secondsElapsed: 0};
    }

    componentDidMount() {
        this.interval = setInterval(this.tick, 1000);
    }

    componentWillUnmount() {
        clearInterval(this.interval);
    }

    tick() {
        this.setState({secondsElapsed: this.state.secondsElapsed + 1});
    }

    render() {
        console.log("Render A");

        return (
            React.DOM.div(null, "Seconds Elapsed: ", this.state.secondsElapsed, new B({ap: Math.random().toString()}))
        );
    }
}

React.renderComponent(new A({name: "Good", test: true}), document.getElementById('test'));