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What is the main purpose of response transformation in NestJS?

easy📝 Conceptual Q11 of 15
NestJS - Interceptors
What is the main purpose of response transformation in NestJS?
ATo modify data before sending it to the client
BTo handle database connections
CTo manage user authentication
DTo log server errors
Step-by-Step Solution
Solution:

  1. Step 1: Understand response transformation concept

    Response transformation means changing the data before it is sent to the user.

  2. Step 2: Identify the correct purpose in NestJS context

    In NestJS, response transformation is used to modify or format the response data.

  3. Final Answer:

    To modify data before sending it to the client -> Option A

  4. Quick Check:

    Response transformation = modify data before sending [OK]
Quick Trick: Response transformation changes output data before sending [OK]
Common Mistakes:
  • Confusing response transformation with authentication
  • Thinking it manages database connections
  • Assuming it logs errors

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