const renderComponent = (msg, cb) => { return ( <Widget src="andyh.near/widget/CallbackRenderWidget" props={{ cb, msg }} /> // <h2>{msg}</h2> ); }; console.log("[NSCOMP:CallbackRender]"); return ( <div> {/*renderComponent("i am da parent")*/} <h2>ima da parent</h2> <Widget src="andyh.near/widget/CallbackRenderChild" props={{ renderComponent, }} /> </div> );