:tropical_drink: intljulep

Super lightweight yet powerful i18n library

Why

Only 20 lines of code to get i18n with internal references (translations in your translations) and simple plurals such as in English or in French. No dependencies.

NodeJS

Installation

npm install intljulep

Import

import { i18n } from 'intljulep'

Browser

Intljulep uses ES modules, widely supported in browsers nowadays. Import the i18n function from the intljulep.min.js file. This file can be located in a CDN (example below) or copied in any directory of your website (for better performance and to be GDPR compliant, since you don’t have to connect to a third party server).

<script type="module">
  import { i18n } from 'https://cdn.jsdelivr.net/npm/[email protected]/intljulep.min.js'
</script>

Usage

i18n.addLocale('en', {
  foo: "the bar",
  plurals: {
    msg: ["message", "messages"],
    man: ["man", "men"],
    woman: ["woman", "women"]
  },
  email: {
    hey: "Hey!",
    // Note the `@` prefix to use other translations in your translation
    info: "Hi {name}. {@email.hey} You have {number} {@plurals.msg(number)}."
  }
})
i18n.setLocale('en')

i18n('foo') // "the bar"
i18n('email.baz') // "email.baz"
i18n('plurals.msg', 0) // "messages"
i18n('plurals.msg', 1) // "message"
i18n('plurals.msg', 2) // "messages"
i18n('plurals.msg', 3) // "messages"
i18n('email.info', { name: "Laurent", number: 0 }) // "Hi Laurent. Hey! You have 0 messages."
i18n('email.info', { name: "Laurent", number: 1 }) // "Hi Laurent. Hey! You have 1 message."
i18n('email.info', { name: "Laurent", number: 2 }) // "Hi Laurent. Hey! You have 2 messages."
i18n('email.info', { name: "Laurent", number: 3 }) // "Hi Laurent. Hey! You have 3 messages."

i18n.addLocale('fr', {
  foo: "le bar"
})
i18n.setLocale('fr')
i18n('foo') // "le bar"

i18n.setLocale('en')
i18n('foo') // "the bar"

Note that you don’t have to use the plurals key specifically as nothing is hardcoded. You could use a single character key like s for convenience:

i18n.addLocale('en', {
  s: {
    msg: ["message", "messages"],
    man: ["man", "men"],
    woman: ["woman", "women"]
  },
})
i18n.setLocale('en')

i18n('s.man', 3) // "men"

License

MIT