Nano Stores I18n

Tiny and flexible JS library to make your web application translatable. Uses Nano Stores state manager and JS Internationalization API.

• Small. Around 1 KB (minified and brotlied). Zero dependencies.
• Works with React, Preact, Vue, Svelte, and plain JS.
• Supports tree-shaking and translation on-demand download.
• Plain flat JSON translations compatible with online translation services like Weblate.
• Out of the box TypeScript support for translations.
• Flexible variable translations. You can change translation, for instance, depends on screen size.

// components/post.jsx
import { params, count } from '@nanostores/i18n' // You can use own functions
import { useStore } from '@nanostores/react'
import { i18n, format } from '../stores/i18n.js'

export const messages = i18n('post', {
  title: 'Post details',
  published: params('Was published at {at}'), // TypeScript will get `at` type
  comments: count({
    one: '{count} comment',
    many: '{count} comments'
  })
})

export const Post = ({ author, comments, publishedAt }) => {
  const t = useStore(messages)
  const { time } = useStore(format)
  return <article>
    <h1>{t.title}</h1>
    <p>{t.published({ at: time(publishedAt) })}</p>
    <p>{t.comments(comments.length)}</p>
  </article>
}

// stores/i18n.js
import { createI18n, localeFrom, browser, formatter } from '@nanostores/i18n'
import { persistentAtom } from '@nanostores/persistent'

export const setting = persistentAtom<string | undefined>('locale', undefined)

export const locale = localeFrom(
  setting,  // User’s locale from localStorage
  browser({ // or browser’s locale auto-detect
    available: ['en', 'fr', 'ru'],
    fallback: 'en'
  })
)

export const format = formatter(locale)

export const i18n = createI18n(locale, {
  get (code) {
    return fetchJSON(`/translations/${code}.json`)
  }
})

// public/translations/ru.json
{
  "post": {
    "title": "Данные о публикации",
    "published": "Опубликован {at}",
    "comments": {
      "one": "{count} комментарий",
      "few": "{count} комментария",
      "many": "{count} комментариев",
    }
  },
  // Translations for all other components
}

Made in Evil Martians, product consulting for developer tools.

Docs

Read full docs here.