message: fix(scheduler): fix getNow check in IE9
  fix
diff: @@ -47,10 +47,15 @@ let getNow: () => number = Date.now
  // timestamp can either be hi-res (relative to page load) or low-res
  // (relative to UNIX epoch), so in order to compare time we have to use the
  // same timestamp type when saving the flush timestamp.
  -if (inBrowser && getNow() > document.createEvent('Event').timeStamp) {
  - // if the low-res timestamp which is bigger than the event timestamp
  - // (which is evaluated AFTER) it means the event is using a hi-res timestamp,
  - // and we need to use the hi-res version for event listeners as well.
  +if (
  + inBrowser &&
  + window.performance &&
  + typeof performance.now === 'function' &&
  + getNow() > document.createEvent('Event').timeStamp
  +) {
  + // if the event timestamp is bigger than the hi-res timestamp
  + // (which is evaluated AFTER) it means the event is using a lo-res timestamp,
  + // and we need to use the lo-res version for event listeners as well.
  getNow = () => performance.now()
  }
  