Cannot pass Timestamp Microservice test, even though it does

JavaScript
1

Tell us what’s happening:
My Code passes all the test except

" Your project can handle dates that can be successfully parsed by new Date(date_string) "

However, my code clearly does this anyway. I’ve tried other users’ code and multiple different solutions but still no success. What am I missing?

Your code so far

app.get("/api/timestamp", (req, res) => {
  let now = new Date();
  res.json({
    unix: now.getTime(),
    utc: now.toUTCString(),
  });
});

app.get("/api/timestamp/:date_string", (req, res) => {
  let date_string = req.params.date_string;
  let passedInValue = new Date(date_string);

  if (parseInt(date_string) > 10000) {
    let unixTime = new Date(parseInt(date_string));
    res.json({
      unix: unixTime.getTime(),
      utc: unixTime.toUTCString(),
    });
  }

  if (passedInValue == "Invalid Date") {
    res.json({ error: "Invalid Date" });
  } else {
    res.json({
      unix: passedInValue.valueOf(),
      utc: passedInValue.toUTCString(),
    });
  }
});

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_0_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36.

Challenge: Timestamp Microservice

Link to the challenge: