[Solved] Identify the error in this LoggingInterceptor code: intercept(context, next) { const now = Date.now(); next.handle().pipe( tap(() => console.log(`Request took ${Date.now() - now}ms`)) ); } | NestJS

NestJS - Interceptors

Identify the error in this LoggingInterceptor code:

intercept(context, next) {
  const now = Date.now();
  next.handle().pipe(
    tap(() => console.log(`Request took ${Date.now() - now}ms`))
  );
}

Atap operator is not imported

BIncorrect use of Date.now()

CMissing context parameter

DMissing return statement before next.handle()

Step-by-Step Solution

Solution:

Step 1: Check the intercept method return
The intercept method must return the observable from next.handle() to continue the request lifecycle.
Step 2: Identify missing return
The code calls next.handle().pipe(...) but does not return it, so the request will not proceed properly.
Final Answer:
Missing return statement before next.handle() -> Option D
Quick Check:
intercept must return next.handle() observable [OK]

Quick Trick: Always return next.handle() in intercept method [OK]

Common Mistakes:

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