fix: @typescript-eslint/explicit-function-return-type

src/components/NotFound/NotFound.tsx

@@ -12,15 +12,15 @@ export const NOT_FOUND_TEXT = "Sorry, we couldn't find it...";
 export type NotFoundProps = RouteComponentProps & { width: any; history: any };
 
 const NotFound: React.FC<NotFoundProps> = ({ history, width }) => {
-  const handleGoTo = (to: string) => () => {
+  const handleGoTo = (to: string): (() => void | undefined) => () => {
     history.push(to);
   };
 
-  const handleGoBack = () => () => {
+  const handleGoBack = (): ((e: React.MouseEvent<HTMLElement, MouseEvent>) => void | undefined) => () => {
     history.goBack();
   };
 
-  const renderList = () => (
+  const renderList = (): JSX.Element => (
     <List>
       <ListItem button={true} divider={true} onClick={handleGoTo('/')}>
         {'Home'}
@@ -31,7 +31,7 @@ const NotFound: React.FC<NotFoundProps> = ({ history, width }) => {
     </List>
   );
 
-  const renderSubTitle = () => (
+  const renderSubTitle = (): JSX.Element => (
     <Typography variant="subtitle1">
       <div>{"The page you're looking for doesn't exist."}</div>
       <div>{'Perhaps these links will help find what you are looking for:'}</div>