feature(components): prop-type Tag

components/common/Tag.js

@@ -1,7 +1,15 @@
 import React from 'react';
+import PropTypes from 'prop-types';
 import classNames from 'classnames';
 import styles from './Tag.module.css';
 
-export default function Tag({ className, children }) {
+function Tag({ className, children }) {
   return <span className={classNames(styles.tag, className)}>{children}</span>;
 }
+
+Tag.propTypes = {
+  className: PropTypes.string,
+  children: PropTypes.node,
+};
+
+export default Tag;