usePreferredLanguages 
Reactive Navigator Languages. It provides web developers with information about the user's preferred languages. For example, this may be useful to adjust the language of the user interface based on the user's preferred languages in order to provide better experience.
Demo 
Usage 
js
import { usePreferredLanguages } from '@vueuse/core'
const languages = usePreferredLanguages()Component Usage 
This function also provides a renderless component version via the
@vueuse/componentspackage. Learn more about the usage.
vue
<template>
  <UsePreferredLanguages v-slot="{ languages }">
    Preferred Languages: {{ languages }}
  </UsePreferredLanguages>
</template>Type Declarations 
typescript
/**
 * Reactive Navigator Languages.
 *
 * @see https://vueuse.org/usePreferredLanguages
 * @param options
 */
export declare function usePreferredLanguages(
  options?: ConfigurableWindow,
): Ref<readonly string[]>