diff --git a/.eslintrc.js b/.eslintrc.js
index d42b0bc..e7a6371 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -1,4 +1,8 @@
 module.exports = {
+    parserOptions: {
+        ecmaVersion: 2021,
+        sourceType: 'module'
+    },
     plugins: [
         'react',
         'react-hooks'
diff --git a/package.json b/package.json
index 72850ce..9d474b7 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,7 @@
   "scripts": {
     "build": "vite build",
     "test": "vitest",
-    "dev": "vite"
+    "dev": "vite",
+    "lint": "eslint src/**/*.{js,jsx}"
   }
 }
diff --git a/src/components/main/Main.js b/src/components/main/Main.js
index 182891a..447f04a 100644
--- a/src/components/main/Main.js
+++ b/src/components/main/Main.js
@@ -1,12 +1,7 @@
-import React, {useEffect, useState} from 'react'
+import React from 'react'
 import '../../css/main.css'
 
 export function MainPage() {
-    let n = 5;
-    useEffect(() => {
-        n++;
-    }, []);
-
     return (<>
         <header>
             <div className="header-left">