[Vue] Vue-router 네비게이션 가드

방법 1

router.beforeEach(async (to, from) => {
    const dir = to.path.split("/")[2];
    if (dir != "login" && !session.isLoggedIn()) {
        alert('로그인을 해주세요')
        await router.push("/m/login")
    }
})

방법 2

router.beforeEach(async (to, from) => {
    if (!to.path.startsWith("/m/login") && !session.isLoggedIn()) {
        alert('로그인을 해주세요')
        await router.push("/m/login")
    }
})