init

src/main.ts

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+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app.module';
+import { ConfigService } from '@nestjs/config';
+import { Logger, ValidationPipe } from '@nestjs/common';
+import { getSwaggerConfig } from './config/swagger.config';
+import multipart from '@fastify/multipart';
+import fastifyCookie from '@fastify/cookie';
+
+// 👈 Import the Fastify application type
+import { type NestFastifyApplication, FastifyAdapter } from '@nestjs/platform-fastify';
+import { HttpExceptionFilter } from './core/exceptions/http.exceptions';
+import { ResponseInterceptor } from './core/interceptors/response.interceptor';
+// import { PaginationInterceptor } from './core/interceptors/pagination.interceptor';
+
+async function bootstrap() {
+  const logger = new Logger('APP');
+
+  // 1. Create the application using the Fastify adapter
+  const app = await NestFactory.create<NestFastifyApplication>(
+    AppModule,
+    new FastifyAdapter(), // Instantiate the FastifyAdapter
+    // Optional: Pass the custom logger (like your 'APP' logger) to NestFactory
+    { logger: ['error', 'warn', 'log', 'debug', 'verbose'] },
+  );
+
+  await app.register(fastifyCookie);
+
+  await app.register(multipart);
+  app.useGlobalPipes(new ValidationPipe());
+
+  app.useGlobalInterceptors(
+    new ResponseInterceptor(),
+    // , new PaginationInterceptor()
+  );
+  app.useGlobalFilters(new HttpExceptionFilter());
+
+  const configService = app.get<ConfigService>(ConfigService);
+  // Ensure the port is handled correctly, use 4000 as fallback if needed
+  const APP_PORT = configService.getOrThrow<number>('APP_PORT') ?? 4000;
+
+  // 2. Swagger Integration Note
+  // Since you are using platform-fastify, you must ensure your getSwaggerConfig
+  // function is configured to use the Fastify platform option if necessary.
+  getSwaggerConfig(app);
+
+  app.enableCors({
+    origin: true,
+    methods: ['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'],
+    credentials: true,
+    optionsSuccessStatus: 204,
+  });
+
+  // 3. Listen on port using Fastify's listen method
+  // '0.0.0.0' is recommended for Docker/containerized environments
+  await app.listen(APP_PORT, '0.0.0.0', () => {
+    logger.log(`Application is running on: http://localhost:${APP_PORT}`);
+    logger.log(`Swagger documentation: http://localhost:${APP_PORT}/docs`);
+  });
+}
+
+bootstrap();