const simulation = d3
        .forceSimulation()
        .force(
          "link",
          d3
            .forceLink()
            .id(function (d) {
              return d.name;
            })
            .strength(0.015)
            .distance(15)
        )
        .force("charge", d3.forceManyBody().strength(-400))
        .force('collide', d3.forceCollide()
          .radius(1))
        .force("center", d3.forceCenter(width / 2, height / 2));