Unable to access static properties of a component imported using React.lazy

Question

i have a react functional component in a file like this -

const Slot: React.ElementType = () => null;
const Component = ({ children }): JSX.Element | null => {
  const childrenArr = React.Children.toArray(children) as React.ReactElement[];
  const slot = childrenArr.find(child => child.type === Slot);

  return (
    <div>
      <div>Hi</div>
      {slot && slot.props.children}
    </div>
  );
};

Component.Slot = Slot;
export default Component;

And i am using this compont by importing it in another using React.lazy

const Comp = React.lazy(() => import(/* webpackChunkName: "comp" */ './Component'))

I am rendering this component under React.Suspense, like this

 <Suspense fallback={null}>
   <Comp>
     Welcome
     <Comp.Slot>Robert</Comp.Slot>
   </Comp>
 </Suspense>

But Robert is not rendering. Also, i am getting Typescript error for Comp.Slot, saying

Property 'Slot' does not exist on type 'LazyExoticComponent<{ (): Element | null; Slot: FunctionComponent<any>;}>'.

What will be the best way to fix this? Please help.

score 1 · Answer 1 · answered Jun 26 '20 at 09:44

I believe lazy only works with default export and only with exact component being exported as it creates some sort of HOC around it.

What you can do is make this part

   <Comp>
     Welcome
     <Comp.Slot>Robert</Comp.Slot>
   </Comp>

standalone component and use lazy on it.

Unable to access static properties of a component imported using React.lazy

1 Answers1