[Solved] What is wrong with this code snippet?@UsePipes(ValidationPipe) @Get() getAll() { return [] } — Ans: ValidationPipe is not instantiated with 'new' | NestJS

NestJS - Pipes

What is wrong with this code snippet?

@UsePipes(ValidationPipe)
@Get()
getAll() { return [] }

AValidationPipe is not instantiated with 'new'

BPipes cannot be used on GET methods

CMissing @Param decorator for pipe binding

DgetAll method must have parameters to use pipes

Step-by-Step Solution

Solution:

Step 1: Check pipe usage syntax
Pipes must be instantiated with 'new' keyword when passed to @UsePipes.
Step 2: Identify missing instantiation
Here, ValidationPipe is passed as a class reference, not an instance.
Final Answer:
ValidationPipe is not instantiated with 'new' -> Option A
Quick Check:
Always instantiate pipes with new before binding [OK]

Quick Trick: Always use 'new' when binding pipes with @UsePipes [OK]

Common Mistakes:

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