Saving the Aggregate with Sequelize

// users/repos/implementations/sequelizeUserRepo.ts

import { UserMap } from '../mappers/userMap'

export class SequelizeUserRepo implements IUserRepo {
  private models: any;

  constructor(models: any) {
    this.models = models;
  }

  async exists(userEmail: UserEmail): Promise<boolean> {
    ...
  }

  async save(user: User): Promise<void> {
    const UserModel = this.models.BaseUser;
    const exists = await this.exists(user.email);

    if (!exists) {
      // Create a JSON representation { username, password, userId, email }
      const rawSequelizeUser = await UserMap.toPersistence(user);
      // Save the user model
      await UserModel.create(rawSequelizeUser);
    } else {
      // Update logic
      ...
    }

    return;
  }
}