How to upload files to AWS S3 with NodeJS SDK

AWS_S3_File_Upload.js

var AWS = require("aws-sdk");
var fs = require('fs');
s3 = new AWS.S3();

// For dev purposes only
AWS.config.update({ accessKeyId: '...', secretAccessKey: '...' });

// Read in the file, convert it to base64, store to S3
fs.readFile('del.txt', function (err, data) {
  if (err) { throw err; }

  var base64data = new Buffer(data, 'binary');
    
  s3.createBucket({Bucket: 'malgate-bucket-dev'}, function(err, data) {
    var data = {Bucket: 'malgate-bucket-dev', Key: 'spiral.json', Body: base64data};
    s3.putObject(data, function(err,data) {
      if(err) return console.log(err);
      console.log("Successfully uploaded data to myBucket/myKey");
    });
  });

});