The type 'NestMiddleware<any, any>' cannot be assigned to the parameter of type 'Function | Type<any>'

Currently, I am including a middleware into a module.

Encountering a type error while invoking consumer.apply(middleware):

Snippet of Code:

@Module({
  ...
})
export class FooModule implements NestModule {

  @Inject(FOO_MIDDLEWARE)
  private middleware: NestMiddleware;

  public configure(consumer: MiddlewareConsumer) {
    consumer
      .apply(this.middleware)
      .forRoutes('foo');
  }
}

Error Message:

TS2345: Argument 'NestMiddleware<any, any>' cannot be assigned to parameter 'Function | Type<any>'. The properties apply, call, bind, prototype, and few others are missing in type 'NestMiddleware<any, any>' compared to 'Type<any>'.

Answer №1

I discovered a solution to the issue by making the following adjustment:

  • private middleware: Type<any>

Instead of using:

  • private middleware: NestMiddleware

This change involved importing Type from @nestjs/common.

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