BitrixVue 3

Baseline: main 23.0+ · Verified: main 26.800.0, ui 26.687.0

ui.vue3 = Vue 3 + the BitrixVue plugin ($Bitrix), one shared Vue for the whole page. Runtime template compilation; no SFC .vue, no SSR. Vue 2 (ui.vue, global BX.BitrixVue) is legacy — don't start new code on it.

In an extension (preferred)

import { BitrixVue, ref } from 'ui.vue3';