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44 lines
1.5 KiB
TypeScript
44 lines
1.5 KiB
TypeScript
import 'server-only'
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import { cookies, headers } from 'next/headers'
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import Negotiator from 'negotiator'
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import { match } from '@formatjs/intl-localematcher'
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import type { Locale } from '.'
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import { i18n } from '.'
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export const getLocaleOnServer = (): Locale => {
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// @ts-expect-error locales are readonly
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const locales: string[] = i18n.locales
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let languages: string[] | undefined
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// get locale from cookie
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const localeCookie = cookies().get('locale')
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languages = localeCookie?.value ? [localeCookie.value] : []
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if (!languages.length) {
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// Negotiator expects plain object so we need to transform headers
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const negotiatorHeaders: Record<string, string> = {}
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headers().forEach((value, key) => (negotiatorHeaders[key] = value))
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// Use negotiator and intl-localematcher to get best locale
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languages = new Negotiator({ headers: negotiatorHeaders }).languages()
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}
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// match locale
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const matchedLocale = match(languages, locales, i18n.defaultLocale) as Locale
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return matchedLocale
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}
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// We enumerate all dictionaries here for better linting and typescript support
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// We also get the default import for cleaner types
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const dictionaries = {
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'en': () => import('@/dictionaries/en.json').then(module => module.default),
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'zh-Hans': () => import('@/dictionaries/zh-Hans.json').then(module => module.default),
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} as { [locale: string]: () => Promise<any> }
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export const getDictionary = async (locale: Locale = 'en') => {
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try {
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return await dictionaries[locale]()
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}
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catch (e) { console.error('locale not found', locale) }
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}
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