export async function upgrade(queryFn: (query: string, values?: any[]) => Promise<Array<any>>) {
  await queryFn('ALTER TABLE `user_roles` ADD INDEX user_id (user_id);')
}

export async function downgrade(queryFn: (query: string, values?: any[]) => Promise<Array<any>>) {
  await queryFn('ALTER TABLE `user_roles` DROP INDEX `user_id`;')
}