improvement: flow coverage

src/components/Post/Meta/Meta.js

@@ -1,8 +1,13 @@
+// @flow
 import React from 'react';
 import moment from 'moment';
 import styles from './Meta.module.scss';
 
-const Meta = ({ date }) => (
+type Props = {
+  date: string
+};
+
+const Meta = ({ date }: Props) => (
   <div className={styles['meta']}>
     <p className={styles['meta__date']}>Published {moment(date).format('D MMM YYYY')}</p>
   </div>

src/components/Post/Meta/Meta.test.js

@@ -1,3 +1,4 @@
+// @flow
 import React from 'react';
 import renderer from 'react-test-renderer';
 import Meta from './Meta';

src/components/Post/Meta/index.js

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