[Solved] Identify the error in this LoggingInterceptor code snippet:intercept(context: ExecutionContext, next: CallHandler): void { console.log('Request started'); next.handle(); console.log('Request ended');... | NestJS

NestJS - Interceptors

Identify the error in this LoggingInterceptor code snippet:

intercept(context: ExecutionContext, next: CallHandler): void {
  console.log('Request started');
  next.handle();
  console.log('Request ended');
}

Aintercept must return an Observable, not void

Bconsole.log statements are not allowed in interceptors

Cnext.handle() should be called before console.log

DExecutionContext parameter is missing

Step-by-Step Solution

Solution:

Step 1: Check method return type
intercept must return Observable to handle async flow.
Step 2: Identify the error in code
Here, intercept returns void, which breaks the interceptor contract.
Final Answer:
intercept must return an Observable, not void -> Option A
Quick Check:
intercept return type = Observable [OK]

Quick Trick: intercept must return Observable to work properly [OK]

Common Mistakes:

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