TypeScriptでReactを扱ってるときにReactDOM.renderで意味が分からない型エラーが起きることがあります。 TS2605: JSX element type 'GithubPicker' is not a constructor function for JSX elements. Types of property 'render' are incompatible. Type '() => ReactNode' is not assignable to type '{ (): ReactNode; (): false | Element | null; }'. Type 'ReactNode' is not assignable to type 'false | Element | null'. Type 'undefined' is not assignable