title: Proxy Number instance in js
body: <p>I have a task to implement expression 0..II to return [0, 1, 2] (same for all Roman numerals).</p>
  
  <p>I have looked up Proxy object concept and this works fine.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>var handler = {
   get: function(obj, prop) {
    console.log(prop);
    x = parseRomanNumeral(prop);
    if (x) {
     return Array.from(Array(x).keys());
    }
  
   },
   defineProperty: function(target, property, descriptor) {
    console.log('1');
   }
  }
  
  var target = {};
  var proxy = new Proxy(target, handler);
  console.log(proxy.II); //[0, 1]</code></pre>
  </div>
  </div>
  </p>
  
  <p>But I don't understand how to do the same with the expression 0..I as 0. is the instance of Number. What should I pass to Proxy constructor?</p>