Error message in NestJs jwt authentication global guards: Unable to access property 'secretOrKeyProvider' as it is undefined

When configuring my application, I have implemented global filters using the code snippet below.

const server = await NestFactory.create(ApplicationModule);
server.useGlobalGuards(new (AuthGuard('jwt')));

The structure of my ApplicationModule is outlined as follows.

import { Module } from '@nestjs/common';
import { JwtModule, JwtModuleOptions } from '@nestjs/jwt';
import { PassportModule } from '@nestjs/passport';
import { Strategy } from 'passport-jwt';
import { AppController } from './application.controller';
import { ConfigModule, ConfigType } from '@nestjs/config';
import jwtConfig from './config/jwt.config';

@Module({
  imports: [
    ConfigModule.forFeature(jwtConfig),
    PassportModule.register({ defaultStrategy: 'jwt' }),
    JwtModule.registerAsync({
      imports: [ConfigModule.forFeature(jwtConfig)],
      useFactory: (config: ConfigType<typeof jwtConfig>) => {
        return {
          secret: config.secretKey,
          signOptions: { expiresIn: config.expiresIn },
        } as JwtModuleOptions;
      },
      inject: [jwtConfig.KEY],
    }),
  ],
  controllers: [
    AppController
  ],
  providers: [Strategy],
})
export class ApplicationModule {}

However, I encountered the following error during execution:

TypeError: Cannot read property 'secretOrKeyProvider' of undefined

I am unsure of what may be causing this issue. I have yet to come across any examples utilizing Global auth guards in a similar manner. Any insights or guidance would be greatly appreciated.

Answer №1

Creating a custom passport strategy class like JwtStrategy is essential for handling authentication in various server applications. The implementation of this logic varies depending on the specific requirements of each application, making it impossible to provide a one-size-fits-all solution. Check out the Nest documentation for a clear example.

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