title: nuxt i18n number localization
body: <p>How do you configure number localization in Nuxt?</p>
  
  <p>I have my nuxt.config like so</p>
  
  <pre><code>modules: [
      ['nuxt-i18n', {
        locales: [
          {
            code: 'en',
            iso: 'en-US',
            file: 'en-US.js'
          }
        lazy: true,
        langDir: 'lang/',
        defaultLocale: 'en',
      }]
    ],
  </code></pre>
  
  <p>but if I try to add a template like so to a page</p>
  
  <pre><code>&lt;p&gt;{{ $n(100, 'currency') }}&lt;/p&gt;
  </code></pre>
  
  <p>I get the error in my console:</p>
  
  <pre><code>[vue-i18n] Fall back to 'en-US' number formats from 'en number formats.
  </code></pre>
  
  <p>I tried searching for examples but couldn't find any in the nuxt documentation.</p>