test.js

const PORT = 8080;
var express = require('express');
var service = express();
service.get("/", function(request, response){
    response.send("Usage: Load this same page with either a string representing the date, or a Unix timestamp at the end</br> you will be given both the timestamp and readable date as a response.");
});
service.get("/:date", function(request, response){
    response.send(createTimestamps(request.params.date));
    // response.send("Hello")
});
service.listen(PORT);

function createTimestamps(userInput){
    //Takes userInput and returns an object containing a unix timestamp and a readable date. 
    //Here we will determine if we can turn the userInput into an integer.
    //Given that unix timestamps can be any length we only care if it is a number
    var unixTimeStamp;
    var humanTimeStamp;
    if (!isNaN(Number.parseInt(userInput))){
        //Given that we have a number
        unixTimeStamp = Number.parseInt(userInput);
    }
    else if (typeof(Date.parse(userInput) != typeof(Date.parse("Hello World")))){
        //If we are able to turn the user's input into a Date
        //We cannot skip the first if statement because parsing a date from a number doesnt work
        //Example Date.parse("715503600000") != 715503600000
        unixTimeStamp = Date.parse(userInput);
    }
    else {
        //In the event we are unable to parse the user's input into a value
        return {
            "unix": null,
            "human": null
        }
        
    }
    var dateObject = new Date(unixTimeStamp);
    var dateString = dateObject.toDateString();
    return {
        "unix": unixTimeStamp,
        "human": dateString
    }

}