Lottie, automatically fixing SVG scaling issue on Internet Explorer 11, but it's actually runnable on Internet Explorer 11 and no jQuery

app.js

function lottieIeFixer (el, perspective) {
  if (typeof perspective === 'undefined') {
    perspective = 'width';
  }

  if (!window.navigator.userAgent.indexOf('Windows') > -1 && 
      !window.navigator.userAgent.indexOf('rv:11.0') > -1) {
    return;
  }

  
  var width = el.clientWidth;
  var height = el.clientHeight;
  var svg = el.querySelector('svg');

  if (perspective === 'width') {
    var ratio = width / svg.width;
    svg.width = width;
    svg.height = svg.height * ratio;
  } else if (perspective === 'height') {
    var ratio = height / svg.height;
    svg.height = height;
    svg.width = svg.width * ratio;    
  }
}
// Usage

var el = document.querySelector('.lottie-animation');

var animation = lottie.loadAnimation({
  container: el,
  renderer: 'svg',
  autoplay: true,
  loop: true,
  path: el.getAttribute('data-source')
});

animation.addEventListener('DOMLoaded', function () {
  lottieIeFixer(el);
});

there's still jquery on line 35 m8

tank ya m8, fixd dat