- Migrate the i18n plugin to the Vue 3 plugin API, and remove Vue.use( i18n )
- Remove our own compatibility code for new Vue()
- Remove our own compatibility code for Vue.createMwApp( { store: store } )
- Switch our version of Vue from the migration build to the regular build
Vue 2 reaches EOL at the end of 2023 – after that point I assume the compatibility build is no longer supported: https://v2.vuejs.org/lts/