title: I18n in ReactJs app of very large scale
body: <p>Do you have any experience with implementing internalization/localization in very large react app ?</p>
  
  <p>We are talking about thousands of strings and some ~20 languages
  Loading it all in browser is not a very good idea :) so should be done server-side. But im not sure that if even sending whole file for one language (e.g all translations for en_US )is a good idea.</p>
  
  <p>Is there an option to achieve getting server side  only <code>nestedStrings</code> from translations json like this</p>
  
  <pre><code>{
    topLevel : "a",
    topLevel2 : "b",
      nestedProperty : {
          someting : "C"
      }
  </code></pre>
  
  <p>Or should i write custom solution ?</p>