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vue-i18nt

A lightweight internationalization plugin for Vue.js with Typescript support

Installation

npm install vue-i18nt --save

How to use

Default use in your main.js Vue project

import * as i18nt from 'vue-i18nt'
...
createApp(App)
  .use(i18nt.plugin)
...

You can pass an optional object for options

createApp(App)
  .use(i18nt.plugin, {
    default: 'en', // force default locale to 'en'
    locales: {
      en: require('./assets/locales/en.json'),
      fr: require('./assets/locales/fr.json')
    }
  })

The JSON files consist of key-value pairs where the key is the first argument passed to the main translation function, like:

/* json */
{
  "msg1": "Message traduit en français",
  "msg2": "Ceci est un autre message",
  "greetings": "Bonjour!"
}

Basic usage

You can use the $tr translation function injected with the i18nt plugin to localize texts in the HTML template Vue file

<template>
  <div>
    <p>{{ $tr('msg1') }}</p>
  </div>
</template>

The result would be translated in the browser:

<div>
  <p>Message traduit en français</p>
</div>

Advanced usage

You can pass an optional object with the following properties:

• locale: to translate to the locale parameter
• tokens: an array to replace the %s token with the indexed string
• count: a Number to output a specific translated count

Interpolation

The i18nt plugin supports string interpolation, with %s as placeholder in your translation files

<template>
  <div>
    <p>{{ $tr('greetings', { locale: 'en', tokens: ['Vue'] }) }}</p>
  </div>
</template>

/* json */
{
  "greetings": "Hello %s !"
}

It would be rendered in the browser:

<div>
  <p>Hello Vue !</p>
</div>

Pluralization

The i18nt plugin also supports pluralization, with | as a separator for none / one / many elements

<template>
  <select>
    <option value="0">{{ $tr('crows', { count: 0 }) }}</option>
    <option value="1">{{ $tr('crows', { count: 1 }) }}</option>
    <option value="10">{{ $tr('crows', { count: 10 }) }}</option>
  </select>
</template>

{
  "crows": "None | A crow | Murder of Crows"
}

As a result:

<select>
  <option value="0">None</option>
  <option value="1">A crow</option>
  <option value="10">Murder of Crows</option>
</select>

Provide / Inject

Plugin users will now be able to inject['i18n'] into their components to access the i18n object with the following methods:

• getLocale: to access the global locale variable
• setLocale: to set the global locale variable

export default {
  name: 'MyComponent',

  inject: ['i18n'],

  computed: {
    locale() {
      return this.i18n.getLocale()
    }
  },

  methods: {
    changeLanguage(lang) {
      this.i18n.setLocale(lang)
    }
  }
}

Import

You can also import the tr from the exported module to use as a stand-alone function in other javascript files

import { tr } from 'vue-i18nt'

var text = tr('msg2')
console.log('msg2 =>', text)
// msg2 => Ceci est un autre message

License

ISC