Node.js Analytics API challenge

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I’m working on this coding exercise from Hackerrank called the Analytics API (Intermediate Node.js).

The ask is to implement the router method to make this test pass. I’m stuck at it:

Starting code

router.post('/', (req, res) => {
 const { body } = req;

 // Implement method here

res.status(201).send(/* send body */);
})

  it("should ingest click events only once per user every 3 seconds", async () => {
    await setup(event_set_3);
    const response1 = await chai
      .request(server)
      .post("/analytics")
      .send(event_set_1);
    response1.body.ingested.should.eql(1);
    clock.tick(3010);
    const response2 = await chai
      .request(server)
      .post("/analytics")
      .send(event_set_1);
    response2.body.ingested.should.eql(2);
  });

Here’s the test setup:

const setup = (...sets) => {
  return BlueBird.mapSeries(sets, (data) => {
    return chai
      .request(server)
      .post("/analytics")
      .send(data)
      .then((response) => {
        return response.body;
      });
  });
};
describe("analytics_api_medium", () => {
  const event_set_1 = [
    {
      user: 1,
      eventType: "click",
    },
    {
      user: 2,
      eventType: "click",
    },
    {
      user: 1,
      eventType: "pageView",
    },
  ];

  const event_set_2 = [
    {
      user: 2,
      eventType: "pageView",
    },
    {
      user: 1,
      eventType: "pageView",
    },
    {
      user: 1,
      eventType: "pageView",
    },
    {
      user: 2,
      eventType: "click",
    },
    {
      user: 2,
      eventType: "pageView",
    },
  ];

  const event_set_3 = [
    {
      user: 1,
      eventType: "click",
    },
    {
      user: 2,
      eventType: "pageView",
    },
    {
      user: 1,
      eventType: "pageView",
    },
  ];

How I handle the timer in the post method?