Add dependencies for lint. Remove package-lock

app.js

@@ -36,4 +36,4 @@ app.use((err, req, res, next) => {
 
 app.listen(port, () => {
     console.log(`App is running at http://localhost:${port}`);
-});
\ No newline at end of file
+});

eslint.config.mjs

+import globals from "globals";
+import pluginJs from "@eslint/js";
+
+export default [
+  {
+    files: ["**/*.js"], languageOptions: {sourceType: "commonjs"}    
+  },
+  {
+    languageOptions: { globals: globals.browser },
+    rules: {
+      "no-unused-vars": ["error", { "argsIgnorePattern": "next" }]
+    }
+  },
+  pluginJs.configs.recommended,
+];
+

package.json

 {
   "name": "<<projectName>>-api",
   "version": "1.0.0",
-  "description": "",
   "main": "app.js",
   "scripts": {
     "start": "node app.js",
     "dev": "node app.js",
+    "lint": "eslint .",
+    "lint:fix": "eslint . --fix",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
-  "keywords": [],
-  "author": "",
-  "license": "ISC",
   "dependencies": {
     "express": "^4.21.1"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.13.0",
+    "eslint": "^9.13.0",
+    "globals": "^15.11.0"
   }
 }