Function onEnter

packages/core/src/zone/ng_zone.ts:538–544

(zone: NgZonePrivate)

}

function onEnter(zone: NgZonePrivate) {
  zone._nesting++;
  if (zone.isStable) {
    zone.isStable = false;
    zone.onUnstable.emit(null);
  }
}

function onLeave(zone: NgZonePrivate) {
  zone._nesting--;