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