export class JsonUtil {
  static merge(mainNode: any, updatedNode: any): any {
    if (typeof mainNode !== 'object' || typeof updatedNode !== 'object') {
      return updatedNode;
    }

    const mergedNode: any = {};

    for (const key in updatedNode) {
      if (updatedNode.hasOwnProperty(key)) {
        mergedNode[key] = this.merge(mainNode[key], updatedNode[key]);
      }
    }

    for (const key in mainNode) {
      if (mainNode.hasOwnProperty(key) && !updatedNode.hasOwnProperty(key)) {
        mergedNode[key] = mainNode[key];
      }
    }

    return mergedNode;
  }
}