akjfal

에러 발생 코드 //useAlert.ts return [{sentence, isOpen}, {open, close}] //useLogin.ts const [alertData, alertAction] = useAlert(); ... alertAction.open("로그인 성공"); // error 발생 발생 에러 Cannot invoke an object which is possibly 'undefined'.ts(2722) Cannot invoke an object which is possibly 'undefined'.ts(2722) const alertAction: { sentence: any; isOpen: any; open?: undefined; close?: undefined; } | { open:..