[Solved] What will be the output if this interceptor is applied?intercept(context, next) { return next.handle().pipe(map(() => 'fixed response')); } | NestJS

NestJS - Interceptors

What will be the output if this interceptor is applied?

intercept(context, next) {
  return next.handle().pipe(map(() => 'fixed response'));
}

AEvery response will be replaced with the string 'fixed response'

BThe original response will be returned unchanged

CThe response will be an empty object

DThe response will be an error

Step-by-Step Solution

Solution:

Step 1: Analyze the map function
The map function ignores the original data and returns 'fixed response' string.
Step 2: Understand the effect on response
All responses are replaced by this fixed string.
Final Answer:
Every response will be replaced with the string 'fixed response' -> Option A
Quick Check:
map returns fixed string replacing response [OK]

Quick Trick: map(() => value) replaces all responses with value [OK]

Common Mistakes:

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