NestJS - Interceptors
Which NestJS feature is best suited to apply a global response transformation?
Which NestJS feature is best suited to apply a global response transformation?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall the purpose of global interceptors
Global interceptors can modify all responses across the app.Step 2: Differentiate from other features
Middleware runs before controllers, pipes transform inputs, guards handle authorization, so they don't transform responses globally.Final Answer:
Global interceptor -> Option DQuick Check:
Global response transform = Global interceptor [OK]
Quick Trick: Use global interceptors for app-wide response changes [OK]
Common Mistakes:
- Confusing middleware with interceptors
- Using pipes for response transformation
- Thinking guards modify responses
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