What is a proper way to remove the gray circle on panning the graph in cytoscape?

问题

I've looked into this and tried like,

style: [ // the stylesheet for the graph
  {
    selector: 'core',
    style: {
      'active-bg-size': 0
    }
},

on initializing the cy instance. Though it works, it gives me a compile error so I'm wondering if there's a proper or recommended way to achieve this. Would appreciate any help!

来源：https://stackoverflow.com/questions/58231913/what-is-a-proper-way-to-remove-the-gray-circle-on-panning-the-graph-in-cytoscape