I just started with NestJS and wanted to know if it is possible to dynamically render a response either as JSON or HBS template based on the header Accept value.

I have a backend built using NestJS serving pure REST APIs, now I also want to render HBS templates for the same controller methods. Something like the following, but with a better, cleaner approach.

@Get()
async getAll(@Headers() headers, @Res() res: Response): Promise<Pattern[]> {
  const products = await this.productsService.getAll();
  if(headers.accept === "accept/json"){
    return products;
  }
  return res.render(
    this.appService.getViewName(),
    { products },
  );
}