ztl8702

class Node {
  constructor(state, node) {
    if (arguments.length === 1) {
      this.state = state;
      this.parent;
      this.childArray = [];
    } else if (arguments.length === 2) {
      this.state = new State(null, node.state);
      if (node.parent !== (null || undefined)) {
        this.parent = node.parent;