text: export const utils = (function() {
    return {
      DictIntersection: function(dictA, dictB) {
        const intersection = {};
        for (let k in dictB) {
          if (k in dictA) {
            intersection[k] = dictA[k];
          }
        }
        return intersection
      },
  
      DictDifference: function(dictA, dictB) {
        const diff = {...dictA};
        for (let k in dictB) {
          delete diff[k];
        }
        return diff;
      }
    };
  })();
  