An example Node script which uploads a file to AWS S3.

uploadFile.js

const fs = require('fs');
const AWS = require('aws-sdk');
const zlib = require('zlib');
const stream = require('stream');

AWS.config["credentials"] = new AWS.SharedIniFileCredentials({profile: 'some-test-profile'});

AWS.config["logger"] = console;

const s3Obj = new AWS.S3();

const uploadFile = (fileName) => {

    const fileStream = fs.createReadStream(fileName).pipe(zlib.createGzip());

    fileStream.on('error', function(err) {
        console.log('fileStream.createReadStream error.', err);
    });

    fileStream.on('data', (chunk) => {
        console.log(`Received ${chunk.length} bytes of data.`);
    });

    const params = {
        'Bucket': 'some-bucket',
        'Key': 'someFile.gzip',
        'Body': fileStream
    };

    /**
     * https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/S3/ManagedUpload.html
     *
     * "The managed uploader allows for easy and efficient uploading of buffers, blobs, or streams, using a configurable
     * amount of concurrency to perform multipart uploads where possible. This abstraction also enables uploading
     * streams of unknown size due to the use of multipart uploads."
     */
    s3Obj.upload(
        params,
        function (err, data) {

            if (err) {
                throw err;
            } else if (data) {
                console.log("Upload Success; data: ", data);
            }

            console.log(`File uploaded successfully to ${data.Location}`);
        }
    ).promise()
    .then(
        function(data) {
            console.log("Successfully uploaded.");
        },
        function(err) {
            console.log("There was an error while uploading.", err);
        }
    );
};

/**
 * The example.mp4 file is ~ 265.5MB.
 */
uploadFile('example.mp4');

console.log ('...done!');

// WARNING: Do this and the upload won't happen.
//
//          process.exit();
//