Disabling auto-generated etags in NestJs app

Question

How can I disable auto-generated Etags in Nestjs? It's based on Express, so there something like

expressApp.set('etag', false);

should do the trick.

How can I access express app from NestJs main?

Answer 1

You can drop down to the express adapter using getHttpAdapter(), so you can do something like

const bootstrap = async () => {
  const app = await NestFactory.create<NestExpressApplication>(AppModule);
  app.getHttpAdapter().getInstance().set('etag', false);
  await app.listen(3000);
}

Docs on HttpAdapter here

Thanks rodorgas for the .getInstance() addition