Question

export function traceChildNode(id, data, pidName = 'parentId', idName = 'id', childrenName = 'children') {
  let arr = [];
  foreachTree(data, childrenName, (node) => {
    if (node[pidName] == id) {
      arr.push(node);
      arr = arr.concat(traceChildNode(node[idName], data, pidName, idName, childrenName));
    }
  });
  return arr;
}