svelte-intl

Sizes (svelte-intl and format-message):

Internationalize your Svelte 3 apps using format-message.

Svelte 2

For Svelte 2 version see this branch.

Installation

npm i svelte-intl format-message # format message is a peer dependency

Usage

<script context="module">
  import { locale, translations, getBrowserLocale } from 'svelte-intl';

  // If you want to split your bundle, you can call this multiple times,
  // the dictionaries will be merged.
  translations.update({
    en: {
      hello: 'Hello, {name}',
    },
    pt: {
      hello: 'Olá, {name}',
    },
  })

  locale.set(getBrowserLocale('en')) // try to use window.navigator.language
</script>

<script>
  // use _ or translate
  import { _ } from 'svelte-intl'

  export let name = 'John'
</script>

<h1> {$_('hello', { name })} </h1>

API

translate (or "_")

Translation store

• Type: svelte.Readable<typeof formatMessage>

Example

<script>
  import { get } from 'svelte/store'
  import { translate } from 'svelte-intl'

  const title = get(translate)('title')
</script>

<h1> Title: {title} </h1>
<h1> Reactive Title: {$translate('title')} </h1>

translations

Available translations

• Type: Object
  • set(translations) => void : Replace translations (avoid this)
  • update(translations) => void : Add more translations
  • subscribe : Store subscription, avoid using this directly

locale

Current locale

• Type: like svelte.Readable<string>, but with safe update and set (logs error if locale is not found)
• Note: Set and update return a boolean indicating if the locale was found

locales

Available locales, derived from translation

• Type: svelte.Readable<string[]>

Usage

<!-- LanguageSelector.svelte -->
<script>
  import { locale, locales } from 'svelte-intl'

  const setLocale = e => locale.set(e.target.value)
</script>

<select value={$locale} on:change={setLocale}>
  {#each $locales as l}
    <option value={l}> {l} </option>
  {/each}
</select>

options

See format-message options
Just call options.set({ }) :)

• Type: svelte.Readable<formatMessage.SetupOptions> (but update merges with current config)

getBrowserLocale

Tries to match the window.navigator.language to the available dictionaries

• Params:
  • defaultLocale {string}: If no match is found, returns this