Nuxt/examples/other/locale/composables/locale.ts

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import type { Ref } from 'vue'
export const useLocale = () => useState<string>('locale', () => useDefaultLocale().value)
export const useDefaultLocale = (fallback = 'en-US') => {
const locale = ref(fallback)
if (process.server) {
// Learn more about the nuxtApp interface on https://v3.nuxtjs.org/docs/usage/nuxt-app#nuxtapp-interface-advanced
const nuxtApp = useNuxtApp()
const reqLocale = nuxtApp.ssrContext?.req.headers['accept-language']?.split(',')[0]
if (reqLocale) {
locale.value = reqLocale
}
} else if (process.client) {
const navLang = navigator.language
if (navLang) {
locale.value = navLang
}
}
return locale
}
export const useLocales = () => {
const locale = useLocale()
const locales = ref([
'en-US',
'en-GB',
'ko-KR',
'zh-CN',
'ar-EG',
'fa-IR',
'ja-JP-u-ca-japanese'
])
if (!locales.value.includes(locale.value)) {
locales.value.unshift(locale.value)
}
return locales
}
// Using Intl.DateTimeFormat for language-sensitive date and time formatting
// Learn more: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat
export const useLocaleDate = (date: Ref<Date> | Date, locale = useLocale()) => {
return computed(() => new Intl.DateTimeFormat(locale.value, { dateStyle: 'full' }).format(unref(date)))
}