import { createDraggable, utils } from 'animejs';

const [ $value ] = utils.$('.value');

let resizes = 0;

createDraggable('.square', {
  container: '.grid',
  onResize: self => {
    $value.textContent = ++resizes;
  }
});

<div class="iframe-content resizable">
  <div class="large padded grid square-grid">
    <pre class="large log row">
      <span class="label">resizes</span>
      <span class="value">0</span>
    </pre>
    <div class="square draggable"></div>
  </div>
</div>