Typings cleanup and improvements

frontend/src/Components/withScrollPosition.tsx

@@ -1,24 +1,30 @@
-import PropTypes from 'prop-types';
 import React from 'react';
+import { RouteComponentProps } from 'react-router-dom';
 import scrollPositions from 'Store/scrollPositions';
 
-function withScrollPosition(WrappedComponent, scrollPositionKey) {
-  function ScrollPosition(props) {
+interface WrappedComponentProps {
+  initialScrollTop: number;
+}
+
+interface ScrollPositionProps {
+  history: RouteComponentProps['history'];
+  location: RouteComponentProps['location'];
+  match: RouteComponentProps['match'];
+}
+
+function withScrollPosition(
+  WrappedComponent: React.FC<WrappedComponentProps>,
+  scrollPositionKey: string
+) {
+  function ScrollPosition(props: ScrollPositionProps) {
     const { history } = props;
 
     const initialScrollTop =
-      history.action === 'POP' ||
-      (history.location.state && history.location.state.restoreScrollPosition)
-        ? scrollPositions[scrollPositionKey]
-        : 0;
+      history.action === 'POP' ? scrollPositions[scrollPositionKey] : 0;
 
     return <WrappedComponent {...props} initialScrollTop={initialScrollTop} />;
   }
 
-  ScrollPosition.propTypes = {
-    history: PropTypes.object.isRequired,
-  };
-
   return ScrollPosition;
 }