Knex object cannot be correctly formatted

[krzkaczor]

expect(processRangeMock).toHaveBeenCalledExactlyWith([
        [0, 1, expect.anything()], // here anything is knex transaction
        [2, 3, expect.anything()],
        [4, 5, expect.anything()],
        [6, 7, expect.anything()],
      ])

[31mAssertionError: Mock was not called exactly with [4 entries] but was expected to�[0m
      �[32m+ expected�[0m �[31m- actual�[0m

             withSchema: function [anonymous]()
           }
         ]
         [
      �[31m-    5�[0m
           6
      �[31m-    function knex() & {�[0m
      �[31m-      _events: [custom prototype] {}�[0m
      �[31m-      _eventsCount: 0�[0m
      �[31m-      _internalListeners: [�[0m
      �[31m-        {�[0m
      �[31m-          eventName: "start"�[0m
      �[31m-          listener: function [anonymous]()�[0m
      �[31m-        }�[0m
      �[31m-        {�[0m
      �[31m-          eventName: "query"�[0m
      �[31m-          listener: function [anonymous]()�[0m
      �[31m-        }�[0m
      �[31m-        {�[0m
      �[31m-          eventName: "query-error"�[0m
      �[31m-          listener: function [anonymous]()�[0m
      �[31m-        }�[0m

[sz-piotr]

I tested this with knex 2.4.2. Cannot reproduce.