Utilizing the configService, the NestJS JwtStrategy is configured to share the secret key

Question

Utilizing the configService, the NestJS JwtStrategy is configured to share the secret key

In the example from the NestJS documentation (https://docs.nestjs.com/techniques/authentication), I have the JwtStrategy class:

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
    constructor(
        private readonly authService: AuthService,
        private readonly configService: ConfigService,
    ) {
        super({
            jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
            secretOrKey: this.configService.getSecretKey,
        });
    }
    // ...
}

When attempting to access this before calling super(), an error is encountered. However, it is still desired to utilize the configService for obtaining the secret key.

Although utilizing an environment variable is a viable option, using the service approach seems more clear to me as a solution.

Is there a way to use the configService or retrieve a value from it and pass it to the super() call? Thank you.

typescript nestjs passport-jwt

Answer 1

Answer №1

To successfully execute the code, simply eliminate this. as demonstrated below:

secretOrKey: configService.getSecretKey

This modification will be effective because the parameter configService has already been passed.

Answer 2

To successfully execute the code, simply eliminate this. as demonstrated below:

secretOrKey: configService.getSecretKey

This modification will be effective because the parameter configService has already been passed.

Answer 3

Answer №2

To achieve this in NestJS version 10.0.0, follow these steps:

jwt.strategy.ts

Create a JwtStrategy class that extends PassportStrategy(PassportJwtStrategy) and inject the ConfigService as shown below:

export class JwtStrategy extends PassportStrategy(PassportJwtStrategy) {
  constructor(
    private readonly authService: AuthService,
    @Inject(ConfigService) private readonly configService: ConfigService, // Injected config service here
  ) {
    console.log(`${configService.get('JWT_SECRET')}`);
    super({
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      ignoreExpiration: false,
      secretOrKey: configService.getOrThrow('JWT_SECRET'), // Using config service inside the super constructor
    });
  }
}

app.module.ts

In your AppModule, import UserModule and configure ConfigModule globally by following these settings:

@Module({
  imports: [
    UserModule,
    ConfigModule.forRoot({
      validationSchema: envValidationSchema,
      isGlobal: true, // Register the config module globally
      validationOptions: {
        allowUnknown: true,
        abortEarly: true,
      },
    }),
  ],
  controllers: [],
  providers: [],
})
export class AppModule {}

Answer 4

To achieve this in NestJS version 10.0.0, follow these steps:

jwt.strategy.ts

Create a JwtStrategy class that extends PassportStrategy(PassportJwtStrategy) and inject the ConfigService as shown below:

export class JwtStrategy extends PassportStrategy(PassportJwtStrategy) {
  constructor(
    private readonly authService: AuthService,
    @Inject(ConfigService) private readonly configService: ConfigService, // Injected config service here
  ) {
    console.log(`${configService.get('JWT_SECRET')}`);
    super({
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      ignoreExpiration: false,
      secretOrKey: configService.getOrThrow('JWT_SECRET'), // Using config service inside the super constructor
    });
  }
}

app.module.ts

In your AppModule, import UserModule and configure ConfigModule globally by following these settings:

@Module({
  imports: [
    UserModule,
    ConfigModule.forRoot({
      validationSchema: envValidationSchema,
      isGlobal: true, // Register the config module globally
      validationOptions: {
        allowUnknown: true,
        abortEarly: true,
      },
    }),
  ],
  controllers: [],
  providers: [],
})
export class AppModule {}

Utilizing the configService, the NestJS JwtStrategy is configured to share the secret key

Answer №1

Answer №2

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