0001']],
          [secondActivityKey, ['t-00001']]
        ]);

        // THEN: Should have active typing.
        expect(currentActiveTyping).toEqual({
          'u-00001': {
            at: expect.any(Number),
            expireAt: expect.any(Number),
            name: 'Bot',
            role: 'bot',
            type: 'livestream'
          }
        });

        // ---

        // WHEN: Bot send typing message in out-of-order fashion.
        await directLine.emulateIncomingActivity({
          channel