Api References NestJS

NestInterceptor

interface

Interface describing implementation of an interceptor.


interface NestInterceptor<T = any, R = any> {
  intercept(context: ExecutionContext, next: CallHandler<T>): Observable<R> | Promise<Observable<R>>
}

Method to implement a custom interceptor.


intercept(context: ExecutionContext, next: CallHandler<T>): Observable<R> | Promise<Observable<R>>

Option	Type	Description
`context`	`ExecutionContext`	an `ExecutionContext` object providing methods to access the route handler and class about to be invoked.
`next`	`CallHandler`	a reference to the `CallHandler`, which provides access to an `Observable` representing the response stream from the route handler.

Observable<R> | Promise<Observable<R>>