console.log('List base - ' + JSON.stringify(this.listBase));

const getCircularReplacer = () => {
      const seen = new WeakSet();
      return (key, value) => {
        if (typeof value === "object" && value !== null) {
          if (seen.has(value)) {
            return;
          }
          seen.add(value);
        }
        return value;
      };
    };

      console.log(JSON.stringify(this.listBase, getCircularReplacer()));
}