可组合以获取vuetify示例：

// useVuetify.ts
import { getCurrentInstance } from 'vue'

export function useVuetify() {
  const instance = getCurrentInstance()
  if (!instance) {
    throw new Error(`useVuetify should be called in setup().`)
  }
  return instance.proxy.$vuetify
}

将其导入到组件中：

<!-- MyComponent.vue -->
<script lang="ts">
import { useVuetify } from './useVuetify'
import { computed } from 'vue'

/*...*/
  setup() {
    const vuetify = useVuetify()
    const isDesktop = computed(()=>vuetify.breakpoints.mdAndUp)
    return { isDesktop }
  },
/*...*/
</script>

如果使用Vue〈= 2.6.14 + @vue/composition-api而不是Vue 2.7，请将'vue'替换为'@vue/composition-api'

正如@Lagamura在评论中提到的，这可以通过使用useDisplay()的Vuetify 3来实现。
例如

const display = useDisplay();

console.log(display.mobile.value);