NestJs Questions

The @Query() decorator provides a clean and type-safe way to access query parameters from the request object. It allows retrieving specific parameters or the entire query object.

For type safety, define generics with the NestInterceptor interface, specifying the expected request and response types, allowing TypeScript to perform type checking.

Modules are the fundamental units of organization in NestJS. They encapsulate related components, making your application modular and easier to manage as it grows.

NestJS is a framework specifically designed for building server-side applications. It leverages the power and scalability of Node.js and provides a structured architecture for complex projects.

The value returned from a NestJS controller method forms the response sent back to the client. This can be a simple object, a string, or more complex data.

The @Interceptor() decorator from @nestjs/common is specifically designed to mark a class as an Interceptor in NestJS.

Dependency Injection in NestJS is handled by its internal injector. When a component (like a controller) has a dependency specified in its constructor, the injector automatically resolves and provides an instance of that dependency.

The /src directory is the convention for placing your application's core modules, controllers, services, and other TypeScript/JavaScript files.

In NestJS, route parameters are defined using the colon (:) followed by the parameter name. This pattern captures the value from the URL and makes it accessible within the route handler.

The useFactory property in a FactoryProvider is used to define a factory function. This function is responsible for creating and returning an instance of the provider. It can be asynchronous and can inject dependencies.