Use componentWillMount() as a before hook

webpack/routes.tsx

@@ -19,15 +19,13 @@ export const attachAppToDom: Callback = () => {
 };
 
 export class RootComponent extends React.Component<RootComponentProps, {}> {
-  render() {
-    // ==== TEMPORARY HACK. TODO: Add a before hook, if such a thing exists in
-    // React Router. Or switch routing libs.
+  componentWillMount() {
     const notLoggedIn = !Session.fetchStoredToken();
     const restrictedArea = window.location.pathname.includes("/app");
-    if (notLoggedIn && restrictedArea) {
-      Session.clear();
-    }
-    // ==== END HACK ====
+    (notLoggedIn && restrictedArea && Session.clear());
+  }
+
+  render() {
     return <Provider store={_store}>
       <Router history={history}>
         {topLevelRoutes}

webpack/tools/state_to_props.ts

@@ -20,14 +20,7 @@ export function mapStateToProps(props: Everything): Props {
   const tools = selectAllTools(props.resources.index);
 
   /** Returns sorted tool slots specific to the tool bay id passed. */
-  const getToolSlots = (/** uuid: string */) => {
-    // TODO: three things:
-    //       1. We don't support multiple bays. Therefore, no need to filter.
-    //       2. If we add an index to this resource, we don't need to perform
-    //          filtering.
-    //       3. Once we do support multiple bays, re-add the slot's UUID param.
-    return toolSlots;
-  };
+  const getToolSlots = () => toolSlots;
 
   /** Returns all tools in an <FBSelect /> compatible format. */
   const getToolOptions = () => {