Send CSV file from Google bucket to SFTP server using GCP Cloud function NodeJS

Question

I am trying to send a csv file to a SFTP server using a Google Cloud Function. This means -

Step 1 - need to Create a Connection with the SFTP Server

Step 2- Pick the csv File from the GCP Bucket

Step 3 - Push the File to SFTP Server in a certain location

This is the nodejs script I am using -

exports.helloWorld = (req, res) => {
  let Client = require('ssh2-sftp-client');
  let sftp = new Client();

sftp.connect({
  host: process.env.SFTP_SERVER,
  username: process.env.SFTP_USER,
  port: process.env.SFTP_PORT,
  password: process.env.SFTP_PASSWORD
}).then(() => {
  return sftp.list('/public');
}).then(data => {
  console.log(data, 'the data info');
}).catch(err => {
  console.log(err, 'catch error');
});
};
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And this is my Package.json file

{
  "name": "sample-http",
  "version": "0.0.1",
  "dependencies": {
    "node-fetch": "^2.6.0",
    "@google-cloud/bigquery": "5.10.0",
    "@google-cloud/storage": "5.18.0",
    "ssh2-sftp-client": "7.2.1"
    
  }
}
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Now Everything runs fine but it doesn't do anything. Can anyone point to me what script I am missing here and if there is any documentation to do the following steps??