title: FormattedNumber component from react-intl doesn't work
body: <p>I am trying to use the component <code>FormattedNumber</code> from the <code>react-intl</code> library but I can't make it to work.</p>
  
  <pre><code>&lt;IntlProvider
      locale="en-US"
      messages={locales['en-US']}
  &gt;
      &lt;div&gt;
          &lt;FormattedNumber value={123456} /&gt;
          &lt;FormattedNumber value="123456" /&gt;
      &lt;/div&gt;
  &lt;/IntlProvider&gt;
  </code></pre>
  
  <p>This only returns the value the way I passed it to the component, wrapped with a span, but it doesn't format the number.</p>
  
  <p>I get an error in the console:</p>
  
  <blockquote>
    <p>[React Intl] Error formatting number.
     TypeError: Bind must be called on a function</p>
  </blockquote>
  
  <p>The <code>FormattedMessage</code> component works fine for all my translations, 
  the locale is set to <code>en-US</code>, so I don't think the issue comes from the <code>IntlProvider</code> or something else.</p>
  
  <p><a href="https://i.stack.imgur.com/2OX32.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2OX32.png" alt="enter image description here"></a></p>
  
  <p>I am using the latest version of the library, <code>2.0.1</code></p>
  
  <p>Any idea?</p>