title: ngrx, How to have a starting state from an api?
body: <p>I have my reducer with a starting state of an empty array:</p>
  
  <pre><code>folderReducer(state:Array&lt;Folder&gt; = [], action: Action)
  </code></pre>
  
  <p>I'd like to populate the starting state, so when I do</p>
  
  <pre><code>store.subscribe(s =&gt; ..)
  </code></pre>
  
  <p>The first item I get comes from the database. I assume the way of doing this is with ngrx/effects, but I'm not sure how.</p>