Function isNestedJSON

frontend/src/hooks/stream/useStreamingJSONParser.ts:28–45

(json: any)

   * Determine if a JSON structure has nested objects/arrays
   */
  const isNestedJSON = (json: any): boolean => {
    if (Array.isArray(json)) {
      if (json.length === 0) return false;
      const firstItem = json[0];
      return typeof firstItem === 'object' && firstItem !== null && (
        Object.values(firstItem).some(val => 
          typeof val === 'object' && val !== null && 
          (Array.isArray(val) || Object.keys(val).length > 0)
        )
      );
    } else if (json && typeof json === 'object') {
      return Object.values(json).some(val => 
        typeof val === 'object' && val !== null &&
        (Array.isArray(val) || Object.keys(val).length > 0)
      );
    }
    return false;
  };

  /**
   * Detect property types from JSON data