[Solved] What is the main purpose of NestJS built-in pipes like ParseIntPipe and ParseBoolPipe? — Ans: To automatically convert and validate input types like numbers and booleans | NestJS

NestJS - Pipes

What is the main purpose of NestJS built-in pipes like ParseIntPipe and ParseBoolPipe?

ATo create new HTTP routes in the application

BTo format output data before sending it to the client

CTo handle database connections automatically

DTo automatically convert and validate input types like numbers and booleans

Step-by-Step Solution

Solution:

Step 1: Understand the role of pipes in NestJS
Pipes transform and validate incoming data before it reaches the route handler.
Step 2: Identify what ParseIntPipe and ParseBoolPipe do
They convert string inputs to integer and boolean types respectively, ensuring correct data types.
Final Answer:
To automatically convert and validate input types like numbers and booleans -> Option D
Quick Check:
Pipe purpose = convert and validate input [OK]

Quick Trick: Pipes transform inputs before controller methods run [OK]

Common Mistakes:

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What is the main purpose of NestJS built-in pipes like ParseIntPipe and ParseBoolPipe?