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useRef + forwardRef での型解決

Last updated at Posted at 2021-10-22

forwardRefを使って作成したコンポーネントのrefをいい感じにexportしたい。

調べたけどわざわざコンポーネントとRefの2つに分けてexportする方法しか調べられなかったけど、ひとまずはこれでワークするのでメモしておく。

// my-button.tsx
import { Button } from "@3rd-party-lib";
export { Button as MyButtonRef };
export const MyButton = React.forwardRef<Button, Props>((props, ref) => {
  //...
  return <Button ref={ref}>{...}</Button>
});

// app.tsx
import { MyButton, MyButtonRef } from "~/MuButton";
const App = () => {
  const ref = useRef<MyButtonRef>(null);
  // ...
  return(
    <div>
      <MyButton ref={ref}>Awesome</MyButton>
    </div>
  )
}

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