chore: migrate backend to monorepo apps and biome

apps/auth/src/auth.controller.spec.ts

@@ -0,0 +1,22 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { AuthController } from './auth.controller';
+import { AuthService } from './auth.service';
+
+describe('AuthController', () => {
+  let authController: AuthController;
+
+  beforeEach(async () => {
+    const app: TestingModule = await Test.createTestingModule({
+      controllers: [AuthController],
+      providers: [AuthService],
+    }).compile();
+
+    authController = app.get<AuthController>(AuthController);
+  });
+
+  describe('root', () => {
+    it('should return "Hello World!"', () => {
+      expect(authController.getHello()).toBe('Hello World!');
+    });
+  });
+});

apps/auth/src/auth.controller.ts

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+import { Controller, Get } from '@nestjs/common';
+import { AuthService } from './auth.service';
+
+@Controller()
+export class AuthController {
+  constructor(private readonly authService: AuthService) {}
+
+  @Get()
+  getHello(): string {
+    return this.authService.getHello();
+  }
+}

apps/auth/src/auth.module.ts

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+import { Module } from '@nestjs/common';
+import { AuthController } from './auth.controller';
+import { AuthService } from './auth.service';
+
+@Module({
+  imports: [],
+  controllers: [AuthController],
+  providers: [AuthService],
+})
+export class AuthModule {}

apps/auth/src/auth.service.ts

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+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class AuthService {
+  getHello(): string {
+    return 'Hello World!';
+  }
+}

apps/auth/src/main.ts

@@ -0,0 +1,8 @@
+import { NestFactory } from '@nestjs/core';
+import { AuthModule } from './auth.module';
+
+async function bootstrap() {
+  const app = await NestFactory.create(AuthModule);
+  await app.listen(process.env.AUTH_PORT ?? 3000);
+}
+bootstrap();