Error after migrating to automapper 8

[mhishambakr]

I am migrating my nest app to automapper 8 and I have been getting this error

node_modules/@automapper/classes/index.cjs:19
  return metadataList.reduce((result, [propertyKey, {
                      ^
TypeError: type is not a function
    at /node_modules/@automapper/classes/index.cjs:25:18
    at Array.reduce (<anonymous>)
    at getMetadataList (/node_modules/@automapper/classes/index.cjs:19:23)
    at Object.retrieveMetadata (/node_modules/@automapper/classes/index.cjs:62:52)
    at createMap (/node_modules/@automapper/core/index.cjs:1075:40)
    at Object.<anonymous> (/src/modules/user/user.profile.ts:15:16)
    at Object.addProfile (/node_modules/@automapper/core/index.cjs:1096:11)
at /node_modules/@automapper/nestjs/index.cjs:105:39

Here is the user profile

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

  override get profile(): MappingProfile {
    return (mapper) => {
      createMap(mapper, User, UserDto);
    };
  }
}

[mhishambakr]

The problem was that I was importing the User entity from another dependency that wasn't upgraded and was still using version 7.

Once I updated nest mapper in my package it worked.

The error comes specifically from mapper/classes package, and since it wasn't updated in my dependency, I got this error.