Put object in Amazon S3. Note: can only upload one file at a time

put-object-aws

const aws = require('aws-sdk');
const s3 = new aws.S3();

var params = {
  Bucket: 'bucket_name',
  Key: 'file.png', // if you want to put in a directory, the key would be: 'directory_name/file_name.ext'
  ACL: 'public-read', // to allow to access the file 
  Body: data // the data of the file
};
s3.putObject(params, (err, data) => {
  if (err) {
    console.error('Error uploading image: ', err);
  } else {
    console.log(data);
  }
});