[Fixed] How can I find the oldest folder in a node directory?

Issue

I am trying to find the oldest folder in a directory of my nodejs app.
Right now I get the folder names by fs.readdirSync and the I try to run through the mtime in a for-loop with the fs.stat function. But it does not return any values.

cron.schedule('* * * * *', () => {
  folders = fs.readdirSync(__dirname + '/uploads/');
  var oldestTime;
  var oldest;

  for (var i = 0; i < folders.length; i++) {
    let stats = fs.statSync(folders[i]);
    if (oldestTime == undefined || stats.mtime < oldestTime) {
      oldestTime = stats.mtime;
      oldest = folders[i];
    }
  }
  console.log("oldest folder name is:", oldest)
}

Is there a better way?
Thank you so much!

Solution

folders = fs.readdirSync(__dirname + "/uploads");
var oldestTime;
var oldest;

for (var i = 0; i < folders.length; i++) {
    let stats = fs.statSync(__dirname + "/uploads/" + folders[i]);
    if (oldestTime == undefined || stats.mtime < oldestTime) {
        oldestTime = stats.mtime;
        oldest = folders[i];
    }
}
console.log("oldest folder name is:", oldest)

or use sort to get the oldest one:

const fs = require('fs');
const cron = require("cron");
var job = new cron.CronJob('* * * * * *', function () {
    const folders = fs.readdirSync(__dirname + "/uploads");
    var oldest = folders.sort((a, b) => fs.statSync(__dirname + '/uploads/' + a).mtime - fs.statSync(__dirname + '/uploads/' + b).mtime)[0];
    console.log("oldest folder name is:", oldest)
});
job.start();