code: function gestureMove(ev) {
      if (!pointer || !typesMatch(ev, pointer)) return;
  
      updatePointerState(ev, pointer);
      runHandlers('move', ev);
    }
docs: /*
  If a move event happens of the right type, update the pointer and run all the move handlers.
  "of the right type": if a mousemove happens but our pointer started with a touch event, do nothing.