Method reduce

packages/shell/src/model/node-children.ts:199–203

* 类似数组的 reduce * @param fn

(fn: (acc: any, cur: IPublicModelNode) => any, initialValue: any)

   * @param fn
   */
  reduce(fn: (acc: any, cur: IPublicModelNode) => any, initialValue: any): void {
    return this[nodeChildrenSymbol].reduce((acc: any, cur: InnerNode) => {
      return fn(acc, ShellNode.create(cur)!);
    }, initialValue);
  }

  /**
   * 导入 schema