Vanilla JS

I'm rewriting my custom JS to interact with a map and I was hoping to remove the jQuery. I've tried many different approaches but can't get it to work. Is it possible to rewrite this example removing the jQuery?

(function getMap($, Drupal, drupalSettings) {
  $(document).bind('leaflet.map', function theBind(event, map, lMap) {
    theMap.map = map;
    theMap.lMap = lMap;
    theMap.this = this;
  });
})(jQuery, Drupal, drupalSettings);

Thank you.