title: How to chunk an object into smaller objects
body: <p>The goal is to break an object of unknown length and shape into small objects 3 elements each. Only vanilla JS solution; I don't want to use _.pick etc.</p>
  
  <p>Example of large object:</p>
  
  <pre><code>const data = {
      someFirstKey: 'someFirstVal',
      someSecondKey: 'someSecondVal',
      ...
      someLastKey: 'someLastVal'
  }
  </code></pre>
  
  <p>Desired chunk with 3 keys:</p>
  
  <pre><code>{someKey0: 'someVal0', someKey1: 'someVal1', someKey2, 'someVal2'}
  </code></pre>