Identify the error in this JWT guard implementation: ```typescript import { Injectable } from '@nestjs/common'; import { AuthGuard } from '@nestjs/passport'; @Injectable() export class JwtAuthGuard implements AuthGuard('jwt') {} ```

medium📝 Debug Q6 of 15

NestJS - Guards

AAuthGuard import path is incorrect

BMissing @UseGuards decorator

CMissing constructor in JwtAuthGuard

DJwtAuthGuard should extend AuthGuard, not implement it

Step-by-Step Solution

Solution:

Step 1: Review class declaration syntax
JwtAuthGuard must extend AuthGuard, not implement it.
Step 2: Identify correct inheritance
Correct syntax: export class JwtAuthGuard extends AuthGuard('jwt') {}.
Final Answer:
JwtAuthGuard should extend AuthGuard, not implement it -> Option D
Quick Check:
Extend AuthGuard, don't implement [OK]

Quick Trick: Use extends, not implements, for AuthGuard subclass [OK]

Common Mistakes:

Using implements instead of extends
Forgetting @UseGuards is unrelated to class syntax
Incorrect import path is not the issue here

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Identify the error in this JWT guard implementation: ```typescript import { Injectable } from '@nestjs/common'; import { AuthGuard } from '@nestjs/passport'; @Injectable() export class JwtAuthGuard implements AuthGuard('jwt') {} ```

Step 1: Review class declaration syntax

Step 2: Identify correct inheritance

Final Answer:

Quick Check:

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