Package version

21.6.1

Describe the bug

If you call .merge() with object that has property with undefined value, it will actually update the attribute. It should instead skip the property.

Example

type UpdateUserProps = {
  email?: string
  password?: string
  currentPassword?: string
}

export class UserService {
  async update(user: User, payload: UpdateUserProps) {
    user.merge({
      email: payload.email,
      password: payload.password,
    }) 

    return await user.save()
  }
}

Calling userService.update(user, { password: 'test' }) would set email to undefined.

Reproduction repo

No response