Questions
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1How do you implement content negotiation so an endpoint returns JSON or CSV based on the Accept header in NestJS?
2How do you implement discriminated union body validation where the DTO shape depends on a type field in NestJS?
3How do you set a default version so unversioned requests are handled by a specific version in NestJS?
4How do you handle a route where the param can be either a numeric ID or the literal string 'me' in NestJS?
5How do you handle multi-value query parameters (arrays) in NestJS?
6How do you implement a standard paginated response envelope across all list endpoints in NestJS?
7How do you document DTO properties for Swagger and handle optional vs required fields in NestJS?
8What decorators does NestJS provide for route parameters and how do they differ from query params?
9How do you set HTTP status codes, response headers, and redirects in NestJS without using @Res()?
10What versioning strategies does NestJS support and how do you enable versioning?
11How do you apply versioning at controller and method level in NestJS and how do you mark a route as version-neutral?
12What is the difference between @Param('id') and @Param() with no argument in NestJS?
13How do you set up Swagger in a NestJS application and annotate your controllers?
14What is the difference between @Body(), @Body('field'), and using a full DTO class in NestJS?
15How do you extract and type query parameters in NestJS including optional ones with defaults?
16How do you handle HATEOAS hypermedia links in NestJS REST responses?
17How do wildcard and optional route segments work in NestJS?
18How do you stream a large file or dataset as a response without loading it fully into memory in NestJS?
19How do you handle raw body access for webhook signature verification in NestJS?
20How do you implement API rate limiting per user or per IP in NestJS?
21How do you build a reusable pagination and sorting query DTO that can be extended by feature-specific DTOs in NestJS?
22How do you implement idempotency keys for POST requests to prevent duplicate operations in NestJS?
23What is the recommended file structure for versioned controllers in a NestJS project?
24How do you implement a PATCH endpoint correctly with partial validation using PartialType in NestJS?
25How do you use ClassSerializerInterceptor with @Exclude() and @Expose() to control response shape in NestJS?
