cron13

var libUrl = null;
var scriptTag = Array.prototype.slice
  .call(document.getElementsByTagName("script"))
  .filter(x => /\?proxy?/.test(x.src));
if (scriptTag.length > 0) {
  libUrl = scriptTag[0].src.split("m.js")[0];
} else {
  throw new Error("missing '?proxy' query parameter in your proxy url!");
}