# Configuration build.extend is throwing deprecation warnings when using isDev, isClient, and isServer
Discussion: Removal of Vuex store "classic mode"
discussionpending triage2.x❌ won't do
Warning is shown in built bundle (Classic mode for store/ is deprecated and will be removed in Nuxt 3).
good first issuepending triage2.x
Lot's of deprecation warning after fresh create-nuxt-app
pending triage2.x