Can't connect to IndexedDB in Internet Explorer 11

Question

My code:

var indexedDB = window.indexedDB || window.webkitIndexedDB || window.mozIndexedDB;
if(indexedDB) {
  const request = window.indexedDB.open("library", 1);
  let db;

  request.onupgradeneeded = function() {
    console.log("Upgrade")
  };

  request.onsuccess = function() {
    db = request.result;
    console.log(db)
  };
  request.onerror = (event) => {
    console.log('error: ',event)
  }
}

I got error in console:

How can I connet to IndexedDB in IE11 ?