add eslint

Author: mateogalic112

.eslintignore

@@ -0,0 +1,2 @@
+node_modules/
+dist/

.prettierignore

@@ -29,8 +29,6 @@ docker-compose.yml
 Dockerfile
 
 # Ignore configuration files for other tools or IDE-specific files
-*.config.js
-*.config.ts
 .idea/
 .vscode/
 

.prettierrc

@@ -1,5 +1,4 @@
 {
-  "singleQuote": true,
   "trailingComma": "all",
   "printWidth": 100,
   "singleAttributePerLine": true

eslint.config.mjs

@@ -0,0 +1,22 @@
+import globals from "globals";
+import pluginJs from "@eslint/js";
+import tseslint from "typescript-eslint";
+
+export default [
+  { files: ["**/*.{ts}"] },
+  { languageOptions: { globals: globals.browser } },
+  {
+    rules: {
+      "@typescript-eslint/no-unused-vars": [
+        "warn",
+        {
+          argsIgnorePattern: "^_", // Ignore unused arguments starting with an underscore
+          varsIgnorePattern: "^_", // Ignore unused variables starting with an underscore
+        },
+      ],
+      "@typescript-eslint/explicit-function-return-type": "off", // Disable explicit return type enforcement
+    },
+  },
+  pluginJs.configs.recommended,
+  ...tseslint.configs.recommended,
+];

package.json

@@ -8,7 +8,8 @@
     "start": "node dist/server.js",
     "dev": "tsup src/server.ts --watch --onSuccess \"node dist/server.js\"",
     "build": "tsup",
-    "prettier:fix": "npx prettier --write ."
+    "prettier:fix": "npx prettier --write .",
+    "lint": "eslint 'src/**/*.ts' --fix"
   },
   "keywords": [],
   "author": "",
@@ -24,13 +25,23 @@
     "zod": "^3.23.8"
   },
   "devDependencies": {
+    "@eslint/js": "^9.13.0",
     "@types/bcrypt": "^5.0.2",
     "@types/cookie-parser": "^1.4.7",
     "@types/express": "^5.0.0",
     "@types/jsonwebtoken": "^9.0.7",
     "@types/node": "^22.7.7",
     "@types/pg": "^8.11.10",
+    "@typescript-eslint/eslint-plugin": "^8.10.0",
+    "@typescript-eslint/parser": "^8.10.0",
+    "eslint": "^9.13.0",
+    "eslint-config-prettier": "^9.1.0",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-prettier": "^5.2.1",
+    "globals": "^15.11.0",
+    "prettier": "^3.3.3",
     "tsup": "^8.3.0",
-    "typescript": "^5.6.3"
+    "typescript": "^5.6.3",
+    "typescript-eslint": "^8.10.0"
   }
 }

src/app.ts

@@ -1,8 +1,8 @@
-import express from 'express';
-import { env } from 'config/env';
-import errorMiddleware from 'middleware/error.middleware';
-import { type Controller } from 'interfaces/controller.interface';
-import cookieParser from 'cookie-parser';
+import express from "express";
+import { env } from "config/env";
+import errorMiddleware from "middleware/error.middleware";
+import { type Controller } from "interfaces/controller.interface";
+import cookieParser from "cookie-parser";
 
 class App {
   private app: express.Application;
@@ -23,7 +23,7 @@ class App {
 
   private initializeControllers(controllers: Controller[]) {
     controllers.forEach((controller) => {
-      this.app.use('/api/v1', controller.router);
+      this.app.use("/api/v1", controller.router);
     });
   }
 

src/auth/auth.controller.ts

@@ -1,15 +1,15 @@
-import { Request, Response, NextFunction } from 'express';
-import validationMiddleware from 'middleware/validation.middleware';
-import { loginSchema, registerSchema } from './auth.validation';
-import { AuthService } from './auth.service';
-import { Controller } from 'interfaces/controller.interface';
-import authMiddleware from 'middleware/auth.middleware';
+import { Request, Response, NextFunction } from "express";
+import validationMiddleware from "middleware/validation.middleware";
+import { loginSchema, registerSchema } from "./auth.validation";
+import { AuthService } from "./auth.service";
+import { Controller } from "interfaces/controller.interface";
+import authMiddleware from "middleware/auth.middleware";
 
 export class AuthController extends Controller {
   private authService = new AuthService();
 
   constructor() {
-    super('/auth');
+    super("/auth");
     this.initializeRoutes();
   }
 
@@ -23,10 +23,10 @@ export class AuthController extends Controller {
   private register = async (request: Request, response: Response, next: NextFunction) => {
     try {
       const createdUser = await this.authService.registerUser(request.body);
-      if (!createdUser) return next('No user created');
+      if (!createdUser) return next("No user created");
 
       response.cookie(
-        'Authentication',
+        "Authentication",
         this.authService.createToken(createdUser.id),
         this.authService.createCookieOptions(),
       );
@@ -40,10 +40,10 @@ export class AuthController extends Controller {
   private login = async (request: Request, response: Response, next: NextFunction) => {
     try {
       const user = await this.authService.login(request.body);
-      if (!user) return next('No user found');
+      if (!user) return next("No user found");
 
       response.cookie(
-        'Authentication',
+        "Authentication",
         this.authService.createToken(user.id),
         this.authService.createCookieOptions(),
       );
@@ -67,7 +67,7 @@ export class AuthController extends Controller {
 
   private logout = (_: Request, response: Response) => {
     response
-      .setHeader('Set-Cookie', ['Authentication=; Max-Age=0; Path=/; HttpOnly'])
+      .setHeader("Set-Cookie", ["Authentication=; Max-Age=0; Path=/; HttpOnly"])
       .status(204)
       .end();
   };

src/auth/auth.repository.ts

@@ -1,23 +1,23 @@
-import pool from 'config/database';
-import { RegisterPayload } from './auth.validation';
-import { User } from 'users/users.model';
+import pool from "config/database";
+import { RegisterPayload } from "./auth.validation";
+import { User } from "users/users.model";
 
 export class AuthRepository {
   public async createUser(payload: RegisterPayload) {
     const result = await pool.query<User>(
-      'INSERT INTO users (username, email, password) VALUES ($1, $2, $3) RETURNING *',
+      "INSERT INTO users (username, email, password) VALUES ($1, $2, $3) RETURNING *",
       [payload.username, payload.email, payload.password],
     );
     return result.rows[0];
   }
 
   public async findUserById(id: number) {
-    const result = await pool.query<User>('SELECT * FROM users WHERE id = $1', [id]);
+    const result = await pool.query<User>("SELECT * FROM users WHERE id = $1", [id]);
     return result.rows[0];
   }
 
   public async findUserByEmail(email: string) {
-    const result = await pool.query<User>('SELECT * FROM users WHERE email = $1', [email]);
+    const result = await pool.query<User>("SELECT * FROM users WHERE email = $1", [email]);
     return result.rows[0];
   }
 }

src/auth/auth.service.ts

@@ -1,11 +1,11 @@
-import jwt from 'jsonwebtoken';
-import bcrypt from 'bcrypt';
-import { LoginPayload, RegisterPayload } from './auth.validation';
-import { AuthRepository } from './auth.repository';
-import { env } from 'config/env';
-import { BadRequestError } from 'errors/bad-request.error';
-import { CookieOptions } from 'express';
-import { User } from 'users/users.model';
+import jwt from "jsonwebtoken";
+import bcrypt from "bcrypt";
+import { LoginPayload, RegisterPayload } from "./auth.validation";
+import { AuthRepository } from "./auth.repository";
+import { env } from "config/env";
+import { BadRequestError } from "errors/bad-request.error";
+import { CookieOptions } from "express";
+import { User } from "users/users.model";
 
 export class AuthService {
   private authRepository = new AuthRepository();
@@ -14,15 +14,15 @@ export class AuthService {
     // Check if email already exists
     const foundUser = await this.authRepository.findUserByEmail(payload.email);
     if (foundUser) {
-      throw new BadRequestError('User with that email already exists');
+      throw new BadRequestError("User with that email already exists");
     }
 
     const user = await this.authRepository.createUser({
       ...payload,
       password: await bcrypt.hash(payload.password, 10), // Hash password
     });
     if (!user) {
-      throw new BadRequestError('Failed to create user');
+      throw new BadRequestError("Failed to create user");
     }
 
     return this.removePassword(user);
@@ -31,12 +31,12 @@ export class AuthService {
   public async login(payload: LoginPayload) {
     const user = await this.authRepository.findUserByEmail(payload.email);
     if (!user) {
-      throw new BadRequestError('Invalid email or password');
+      throw new BadRequestError("Invalid email or password");
     }
 
     const isPasswordCorrect = await bcrypt.compare(payload.password, user.password);
     if (!isPasswordCorrect) {
-      throw new BadRequestError('Invalid email or password');
+      throw new BadRequestError("Invalid email or password");
     }
 
     return this.removePassword(user);
@@ -55,13 +55,13 @@ export class AuthService {
     return {
       maxAge: 5 * 60 * 60 * 1000, // 5 hours
       httpOnly: true,
-      sameSite: 'lax',
-      secure: process.env.NODE_ENV === 'production',
+      sameSite: "lax",
+      secure: process.env.NODE_ENV === "production",
     };
   }
 
   private removePassword(user: User) {
-    const { password, ...userWithoutPassword } = user;
+    const { password: _password, ...userWithoutPassword } = user;
     return userWithoutPassword;
   }
 }

src/auth/auth.validation.ts

@@ -1,4 +1,4 @@
-import { z } from 'zod';
+import { z } from "zod";
 
 export const registerSchema = z.object({
   body: z.object({
@@ -8,7 +8,7 @@ export const registerSchema = z.object({
   }),
 });
 
-export type RegisterPayload = z.infer<typeof registerSchema>['body'];
+export type RegisterPayload = z.infer<typeof registerSchema>["body"];
 
 export const loginSchema = z.object({
   body: z.object({
@@ -17,4 +17,4 @@ export const loginSchema = z.object({
   }),
 });
 
-export type LoginPayload = z.infer<typeof loginSchema>['body'];
+export type LoginPayload = z.infer<typeof loginSchema>["body"];