added global error filter

Author: clragon

packages/api/src/app/error.filter.ts

@@ -0,0 +1,41 @@
+import {
+  ArgumentsHost,
+  Catch,
+  ExceptionFilter,
+  HttpException,
+  HttpStatus,
+  Logger,
+} from '@nestjs/common';
+import { Response } from 'express';
+
+// Nest doesn't report errors in dev, so we do it ourselves.
+@Catch()
+export class ErrorFilter implements ExceptionFilter {
+  private readonly logger = new Logger(ErrorFilter.name);
+  private readonly bare = process.env['NODE_ENV'] === 'production';
+
+  catch(exception: unknown, host: ArgumentsHost): void {
+    const response = host.switchToHttp().getResponse<Response>();
+
+    if (exception instanceof HttpException) {
+      response.status(exception.getStatus()).json(exception.getResponse());
+      return;
+    }
+
+    const error = exception instanceof Error ? exception : undefined;
+
+    this.logger.error({
+      msg: 'Request failed: {error}',
+      error: error?.message ?? String(exception),
+      err: error,
+    });
+
+    response.status(HttpStatus.INTERNAL_SERVER_ERROR).json({
+      statusCode: HttpStatus.INTERNAL_SERVER_ERROR,
+      message: this.bare
+        ? 'Internal server error'
+        : (error?.message ?? String(exception)),
+      ...(this.bare ? {} : { stack: error?.stack?.split('\n') }),
+    });
+  }
+}

packages/api/src/main.ts

@@ -9,6 +9,7 @@ import 'reflect-metadata';
 import { AppModule } from './app/app.module';
 import { CorsConfigModule } from './app/cors.module';
 import { DocsModule } from './app/docs.module';
+import { ErrorFilter } from './app/error.filter';
 
 async function bootstrap() {
   process.env['TZ'] = 'UTC';
@@ -40,6 +41,8 @@ async function bootstrap() {
       transform: true,
     }),
   );
+  app.useGlobalFilters(new ErrorFilter());
+
   DocsModule.setupSwagger(app);
 
   app.enableCors(corsConfig.createCorsOptions());