var file = require('fs').createWriteStream('/tmp/data.csv');
s3.getObject({Bucket: 'your-bucket', Key: 'path/to/file.zip/data.csv'}).
    on('build', function(req) { req.httpRequest.headers['X-Minio-Extract'] = 'true'; }).
    on('httpData', function(chunk) { file.write(chunk); }).
    on('httpDone', function() { file.end(); }).