openlayers-8.x-4.x-dev/src/Plugin/Interaction/DragPan/js/dragpan.js

Drupal.openlayersPluginManager.register({
  fs: 'openlayers.Interaction:DragPan',
  init: function(data) {
    var kinetic = new ol.Kinetic(data.opt.decay, data.opt.minVelocity, data.opt.delay);
    return new ol.interaction.DragPan({kinetic: kinetic});
  }
});