Which of the following is the correct syntax to implement the intercept method in a NestJS interceptor?

easy📝 Syntax Q3 of 15

NestJS - Interceptors

Aintercept(next: CallHandler, context: ExecutionContext): Promise<any> { return next.handle(); }

Bintercept(context: ExecutionContext, next: CallHandler): Observable<any> { return next.handle(); }

Cintercept(context: ExecutionContext): Observable<any> { return context.handle(); }

Dintercept(): void { console.log('Intercepted'); }

Step-by-Step Solution

Solution:

Step 1: Recall the intercept method signature
It takes ExecutionContext and CallHandler as parameters and returns an Observable.
Step 2: Check each option's signature and return type
Only intercept(context: ExecutionContext, next: CallHandler): Observable { return next.handle(); } matches the correct signature and returns next.handle() properly.
Final Answer:
intercept(context: ExecutionContext, next: CallHandler): Observable { return next.handle(); } -> Option B
Quick Check:
Correct intercept signature = intercept(context: ExecutionContext, next: CallHandler): Observable { return next.handle(); } [OK]

Quick Trick: intercept(context, next) returns next.handle() Observable [OK]

Common Mistakes:

Master "Interceptors" in NestJS

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More NestJS Quizzes