immich/server/src/domain/user/dto/user-count.dto.ts

import { Transform } from 'class-transformer';
import { IsBoolean } from 'class-validator';
import { Optional } from '../../domain.util';

export class UserCountDto {
  @IsBoolean()
  @Optional()
  @Transform(({ value }) => value === 'true')
  /**
   * When true, return the number of admins accounts
   */
  admin?: boolean = false;
}