title: Sharing Knowledge: pushing a [key, value] to an array with the "push" Method
body: <p>The idea is to create a function, that takes an object as parameter and returns each property with its type.</p>
  <pre class="lang-js prettyprint-override"><code>const robot = {
    version: 16,
    name: 'Cleaner 3000',
    coords: [345, 12],
  };
  
  robotSchema(robot) // [['version', 'number'], ['name', 'string'], ['coords', 'object']]
  </code></pre>