antd/es/layout/hooks/useHasSider.js

An enterprise-class UI design language and React components implementation

import toArray from "rc-util/es/Children/toArray";
import Sider from '../Sider';
export default function useHasSider(siders, children, hasSider) {
  if (typeof hasSider === 'boolean') {
    return hasSider;
  }
  if (siders.length) {
    return true;
  }
  const childNodes = toArray(children);
  return childNodes.some(node => node.type === Sider);
}