* Use className utility

components/post_view/floating_timestamp/floating_timestamp.jsx

@@ -3,6 +3,7 @@
 
 import PropTypes from 'prop-types';
 import React from 'react';
+import classNames from 'classnames';
 
 import RecentDate from 'components/recent_date';
 
@@ -21,11 +22,7 @@ export default class FloatingTimestamp extends React.PureComponent {
  render() {
  const {isMobile, createAt, isScrolling, isRhsPost, toastPresent} = this.props;
 
- if (!isMobile) {
- return null;
- }
-
- if (createAt === 0) {
+ if (!isMobile || createAt === 0) {
  return null;
  }
 
@@ -39,22 +36,15 @@ export default class FloatingTimestamp extends React.PureComponent {
  />
  );
 
- let className = 'post-list__timestamp';
- if (isScrolling) {
- className += ' scrolling';
- }
-
- if (isRhsPost) {
- className += ' rhs';
- }
-
- if (toastPresent) {
- className += ' toastAdjustment';
- }
+ const classes = classNames('post-list__timestamp', {
+ scrolling: isScrolling,
+ rhs: isRhsPost,
+ toastAdjustment: toastPresent,
+ });
 
  return (
  <div
- className={className}
+ className={classes}
  data-testid='floatingTimestamp'
  >
  <div>