@nestjs/common/interfaces/features/nest-interceptor.interface.d.ts

Nest - modern, fast, powerful node.js web framework (@common)

import { Observable } from 'rxjs';
import { ExecutionContext } from './execution-context.interface';
export interface CallHandler<T = any> {
    handle(): Observable<T>;
}
export interface NestInterceptor<T = any, R = any> {
    intercept(context: ExecutionContext, next: CallHandler<T>): Observable<R> | Promise<Observable<R>>;
}