text: class GraphNode {
      constructor(value) {
          this.data = value;
          this.children = [];
      }
  }
  
  class BinaryTreeNode {
      constructor(value) {
          this.data = value;
          this.left = null;
          this.right = null;
      }
  }
  
  module.exports = {
      GraphNode,
      BinaryTreeNode,
  }