@antv/f2/es/deps/d3-hierarchy/src/hierarchy/count.js

Charts for mobile visualization.

function count(node) {
  var sum = 0,
    children = node.children,
    i = children && children.length;
  if (!i) sum = 1;else while (--i >= 0) sum += children[i].value;
  node.value = sum;
}
export default function () {
  return this.eachAfter(count);
}