[nestjs] How can I use this inside mapProfile method in some profile class

[micalevisk]

Hey!

Let's say I've this profile:

@Injectable()
export class UserProfile extends AutomapperProfile {
  constructor(@InjectMapper() mapper: Mapper) {
    super(mapper)
  }

  mapProfile() {
    return (mapper) => {
      mapper.createMap(User, UserDto)
    }
  }
}

Since I can inject dependencies via constructor like:

  constructor(@InjectMapper() mapper: Mapper, @Inject(token) appConfig: AppConfig) {
    super(mapper)
    console.assert(this.appConfig !== undefined) // ✅
  }

What is the proper way (if any) to use my this.appConfig prop in mapProfile while creating mappings? (AKA how to create mappings dynamically(?))

I'm trying to create a mapping only if it is in development mode (this.appConfig.isDev), but inside mapProfile method, this.appConfig is undefined 😕

  mapProfile() {
    return (mapper) => {
      console.assert(this.appConfig !== undefined) // ❌
      mapper.createMap(User, UserDto)
    }
  }

I understand that mapProfile is called by AutomapperProfile (when doing super(mapper))

[nartc]

You can assign it to a variable in mapProfile.

mapProfile() {
   const appConfig = this.appConfig;
   return mapper => {
      console.assert(appConfig !== undefined)
   }
}

[micalevisk]

I'm still getting undefined

I've reproduced this here

[nartc]

@micalevisk Check out 3.0.7
I have to delay the addProfile() call to the micro task queue. Tbh, I'm not sure if it affects anything :) So please give it a try and lemme know. Thanks

[micalevisk]

It works now, ty :)

---

btw you could use process.nextTick as well

[nartc]

@micalevisk feel free to submit a PR to change it :D