Is there a way to merge two built-in Record types in typescript?

Let's say we have the following Records.

var dictionary1 : Record<string, string []> ={
      'fruits' : ['apple','banana', 'cherry'],
      'vegetables' : ['cucumber','onion']
    };

    var dictionary2 : Record<string, string []> ={
      'fruits' : ['apple','banana', 'orange', 'pear'],
      'vegetables' : ['cucumber','corn'],
      'beverages' : ['soda']
    };

I would like to merge them, and see the following result:

var mergedDictionary : Record<string, string []> ={
      'fruits' : ['apple','banana', 'cherry', 'orange', 'pear'],
      'vegetables' : ['cucumber','onion', 'corn'],
      'beverages' : ['soda']
    };