Simple TraceRoute Thing made in Node.JS

TraceRoute.js

const tr = require("nodejs-traceroute");

var HopLog = [];

const EventParse = (objInputTraceData) =>
{
        if (objInputTraceData.ip == undefined) return;
        HopLog.push(objInputTraceData);
        if (objInputTraceData.ip == 'Request timed out.' || objInputTraceData.rtt1 == '*')
        {
                console.log(`${objInputTraceData.hop}: Trace Timed Out!`);
        } else {
                let AvgPing = parseInt(objInputTraceData.rtt1)+parseInt(objInputTraceData.rtt2)+parseInt(objInputTraceData.rtt3);
                AvgPing = parseFloat(AvgPing/3).toFixed(2);
                console.log(`${objInputTraceData.hop}: ${AvgPing}ms | ${HopLog[HopLog.length - 2] == undefined ? '127.0.0.1' : HopLog[HopLog.length - 2].ip || '127.0.0.1'} -> ${objInputTraceData.ip}`);
        }
}

const tracer = new tr();
var DestinationAddress = process.argv[2] || 'dariox.club';
tracer.on('destination',d => DestinationAddress);
tracer.on('hop',EventParse);
tracer.on('close',()=>{
        //console.log(HopLog);
        if (process.argv[3] == 'true')
        {
                require("fs").writeFileSync(`${Date.now()}-${DestinationAddress}.json`,JSON.stringify(HopLog,null,'\t'));
        }
});
tracer.trace(DestinationAddress);