PDF.js get text layer divs bounds

pdfjs-divBoundFor.js

function divBoundsFor(pageIndex) {
  var page = document.querySelectorAll('.page')[pageIndex];
  var textLayer = page && page.querySelector('.textLayer');
  if (!textLayer) return null;
  var textLayerBounds = textLayer.getBoundingClientRect();
  var divs = textLayer.querySelectorAll('div');
  var bounds = Array.prototype.map.call(divs, function (d) {
    var r = d.getBoundingClientRect();
    return {
        left: r.left - textLayerBounds.left,
        top: r.top - textLayerBounds.top,
        right: r.right - textLayerBounds.left,
        bottom: r.bottom - textLayerBounds.top,
        width: r.width,
        height: r.height
    };
  });

  return {
      width: textLayerBounds.width,
      height: textLayerBounds.height, 
      boxes: bounds
  };
}

Hello yurydelendik,
I have a problem with this code, when I try to getBoundingClientRect() for each div inside textLayer, they give 0 value for all attributes of their DOMRect.
But it works perfectly with elements inside annotationLayer.
I get this with Firefox 56.0 and Chromium 62.0.3202.62
I'm using pdfjs-dist 1.9.602