Extending Vue Components for Cleaner Code | Littlelines
Vue 2で書かれた個人プロジェクトをVue 3に書き換えてみた - dely Tech Blog
Vue 3 + Typescript + Vue Class component + Extending Vue = Uncaught TypeError: Class extends value #<Object> is not a constructor or null · Issue #602 · vuejs/vue-class-component · GitHub