[Solved] What is the main purpose of a custom pipe in NestJS? — Ans: To transform or validate data before it reaches the route handler | NestJS

NestJS - Pipes

What is the main purpose of a custom pipe in NestJS?

ATo transform or validate data before it reaches the route handler

BTo handle database connections automatically

CTo manage user sessions and cookies

DTo style the frontend components

Step-by-Step Solution

Solution:

Step 1: Understand the role of pipes in NestJS
Pipes are used to transform or validate incoming data before it reaches the controller methods.
Step 2: Identify what custom pipes specifically do
Custom pipes allow developers to create their own logic for data transformation or validation to ensure data safety and correctness.
Final Answer:
To transform or validate data before it reaches the route handler -> Option A
Quick Check:
Custom pipes = data validation/transformation [OK]

Quick Trick: Pipes act on data before controller uses it [OK]

Common Mistakes:

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What is the main purpose of a custom pipe in NestJS?