'use strict';

setupResizeListener();

///

function setupResizeListener() {
  const RESIZE_CODE = 'resize:';

  const resizeObserver = new ResizeObserver(entries => {
    setTimeout(() => {
      const height = document.body.scrollHeight;
      window.parent.postMessage(RESIZE_CODE + JSON.stringify({height}), '*');
    }, 200);
  })

  resizeObserver.observe(document.body);
}