How to use @videojs/xhr - 1 common examples

const loadTrack = function(src, track) {
  const opts = {
    uri: src
  };
  const crossOrigin = isCrossOrigin(src);

  if (crossOrigin) {
    opts.cors = crossOrigin;
  }

  XHR(opts, Fn.bind(this, function(err, response, responseBody) {
    if (err) {
      return log.error(err, response);
    }

    track.loaded_ = true;

    // Make sure that vttjs has loaded, otherwise, wait till it finished loading
    // NOTE: this is only used for the alt/video.novtt.js build
    if (typeof window.WebVTT !== 'function') {
      if (track.tech_) {
        // to prevent use before define eslint error, we define loadHandler
        // as a let here
        track.tech_.any(['vttjsloaded', 'vttjserror'], (event) => {
          if (event.type === 'vttjserror') {
            log.error(`vttjs failed to load, stopping trying to process ${track.src}`);
            return;