ontaining what we'll be inserted in the evaluated template where the helper was called.
 }
</code></pre>

<p>As you can see, the helper implementation blocks receive an single argument of class HBHelperCallingInfo which holds all the contextual information usable by the helper at calling time:</p>

<ul>
<li>Handlebars context</li>
<li>Private data set by other helpers in parent scopes</li>
<li>Parameters passed to the helpers in template expression</li>
<li>Template block passed to the helper (Block helpers