Refactor start and start:prod scripts to set NODE_ENV to production

Author: tacxou

package.json

@@ -9,10 +9,10 @@
     "prebuild": "cpr README.md dist/README.md && cpr LICENSE dist/LICENSE && cpr package.json dist/package.json",
     "build": "nest build",
     "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
-    "start": "nest start",
+    "start": "NODE_ENV=production nest start",
     "start:dev": "nest start --watch",
     "start:debug": "nest start --debug 0.0.0.0 --watch",
-    "start:prod": "node dist/main",
+    "start:prod": "NODE_ENV=production node dist/main",
     "lint": "eslint \"{src,apps,libs,test}/**/*.ts\"",
     "lint:fix": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
     "test": "jest",
@@ -85,4 +85,4 @@
   "pkg": {
     "assets": "package.json"
   }
-}
+}

src/backend-runner/backend-config.service.ts

@@ -17,7 +17,7 @@ export class BackendConfigService implements OnModuleInit {
     return this._backendsConfigData;
   }
 
-  public constructor(private readonly config: ConfigService) {}
+  public constructor(private readonly config: ConfigService) { }
 
   public async onModuleInit() {
     await this.initialize();
@@ -51,7 +51,7 @@ export class BackendConfigService implements OnModuleInit {
       }
     }
 
-    this.logger.verbose(backendsConfigData);
+    this.logger.verbose(JSON.stringify(backendsConfigData));
     this._backendsConfigData = backendsConfigData;
   }
 }

src/backend-runner/backend-runner.service.ts

@@ -69,7 +69,14 @@ export class BackendRunnerService implements OnApplicationBootstrap, OnModuleIni
     this.redis.on('connecting', () => this.logger.verbose(`Redis connecting... 🟡`));
     this.redis.on('connect', () => this.logger.log(`Redis connected 🟢`));
     this.redis.on('ready', () => this.logger.debug(`Redis ready to listen jobs 🟣`));
-    this.redis.on('close', () => this.logger.fatal(`Redis connection closed 🟥`));
+    this.redis.on('close', () => {
+      this.logger.fatal(`Redis connection closed 🟥`);
+
+      if (process.env.NODE_ENV === 'production') {
+        this.logger.fatal(`Closing application...`);
+        process.exit(1);
+      }
+    });
 
     this.logger.log('OnModuleInit initialized 🔴');
   }
@@ -121,7 +128,11 @@ export class BackendRunnerService implements OnApplicationBootstrap, OnModuleIni
     worker.on('error', (err) => this.logger.error(err));
     worker.on('closed', () => {
       this.logger.fatal(`Worker closed 🟥`);
-      process.exit(1);
+      
+      if (process.env.NODE_ENV === 'production') {
+        this.logger.fatal(`Closing application...`);
+        process.exit(1);
+      }
     });
 
     await worker.run();

src/main.ts

@@ -9,6 +9,7 @@ declare const module: any;
   const app = await NestFactory.createApplicationContext(AppModule, {
     logger: getLogLevel(cfg?.application?.logLevel),
   });
+  app.enableShutdownHooks();
   await app.init();
 
   if (module.hot) {