[Solved] Identify the issue in this NestJS controller method:async getUser(@Query('id', DefaultValuePipe(100)) id: number) { return id; } | NestJS

NestJS - Pipes

Identify the issue in this NestJS controller method:

async getUser(@Query('id', DefaultValuePipe(100)) id: number) { return id; }

AThe parameter <code>id</code> should not have a pipe applied.

BThe default value 100 is not a valid number.

CDefaultValuePipe is not instantiated with the <code>new</code> keyword.

DThe method must be synchronous to use DefaultValuePipe.

Step-by-Step Solution

Solution:

Step 1: Check pipe instantiation
In NestJS, pipes must be instantiated using the new keyword.
Step 2: Identify the error
The code uses DefaultValuePipe(100) without new, which causes a runtime error.
Final Answer:
DefaultValuePipe is not instantiated with the new keyword. -> Option C
Quick Check:
Always instantiate pipes with new [OK]

Quick Trick: Always use 'new' when applying pipes [OK]

Common Mistakes:

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