refactor

src/components/thread/Post.jsx

@@ -130,11 +130,7 @@ export default function Post(props) {
         <div className="likeSection">
           {loggedIn && (
             <button className="likeButton" onClick={handleLike}>
-              {isLiked ? (
-                <i className="far fa-thumbs-up active" />
-              ) : (
-                <i className="far fa-thumbs-up inactive" />
-              )}
+              <i className={`far fa-thumbs-up ${isLiked ? 'active' : 'inactive'}`} />
             </button>
           )}
           <div className="pointContainer">

src/components/topic/CreateTopicForm.jsx

+/* eslint-disable eqeqeq */
 import axios from 'axios';
 import React, { useState } from 'react';
 import { useInput } from '../../helpers/hooks/input-hook';

src/components/topic/Topic.jsx

+/* eslint-disable eqeqeq */
 import React, { useEffect, useState } from 'react';
 import axios from 'axios';
 import ThreadList from '../thread/ThreadList';

src/components/topic/TopicList.jsx

+/* eslint-disable eqeqeq */
 import React, { useEffect, useState } from 'react';
 import axios from 'axios';
 import { Link } from 'react-router-dom';