Enable Flow Strict

src/components/Sidebar/Contacts/Contacts.js

@@ -1,4 +1,4 @@
-// @flow
+// @flow strict
 import React from 'react';
 import { getContactHref, getIcon } from '../../../utils';
 import Icon from '../../Icon';

src/components/Sidebar/Contacts/Contacts.test.js

@@ -1,5 +1,5 @@
 
-// @flow
+// @flow strict
 import React from 'react';
 import renderer from 'react-test-renderer';
 import Contacts from './Contacts';

src/components/Sidebar/Contacts/index.js

@@ -1,2 +1,2 @@
-// @flow
+// @flow strict
 export { default } from './Contacts';