title: same helper for different template
body: <p>as the <a href="https://github.com/meteor/meteor/wiki/Handlebars" rel="nofollow noreferrer">official meteor wiki about handlebars</a> said:</p>
  
  <blockquote>
    <p>The only way to make a helper visible to multiple templates is to assign the same function to each one, or to declare a global helper.</p>
  </blockquote>
  
  <p>I am using the <a href="https://github.com/SachaG/Telescope" rel="nofollow noreferrer">telescope</a> to build an app and the problem is the value of "member since" in user-profile is missing like the follow image.<br>
  <img src="https://i.stack.imgur.com/6VFo7.png" alt="enter image description here"><br>
  as the source code  in /client/views/users/user_profile.js
  <code>Template.user_profile.createdAtFormatted = Template.user_item.createdAtFormatted;</code>
  does not work well.</p>
  
  <p>and here is the helper in /client/views/users/user_item.js <code>Template.user_item</code></p>
  
  <pre><code>Template.user_item.helpers({
   createdAtFormatted: function(){
     return this.createdAt ? moment(this.createdAt).fromNow() : '–';
  })
  </code></pre>
  
  <p>,when I change the code in  /client/views/users/user_profile.js like this:</p>
  
  <pre><code>Template.user_profile.createdAtFormatted = function() {
       return this.createdAt ? moment(this.createdAt).fromNow() : '–';
  }
  </code></pre>
  
  <p>or make a Global helpers like this </p>
  
  <pre><code>Handlebars.registerHelper("createdAtFormatted", function(){
       return this.createdAt ? moment(this.createdAt).fromNow() : '–';
  });
  </code></pre>
  
  <p>then, everything is ok like this<br>
  <img src="https://i.stack.imgur.com/FUtEd.png" alt="enter image description here">  </p>
  
  <p>all I wonder is why the assignment <code>Template.user_profile.createdAtFormatted = Template.user_item.createdAtFormatted;</code> did not work as the way I or the author wish?</p>