node js read file from s3 bucket

# This function for read/download file from s3 bucketconst s3download = function (params) {    return new Promise((resolve, reject) => {        s3.createBucket({            Bucket: BUCKET_NAME        /* Put your bucket name */        }, function () {            s3.getObject(params, function (err, data) {                if (err) {                    reject(err);                } else {                    console.log("Successfully dowloaded data from  bucket");                    resolve(data);                }            });        });    });}