.deploytoChromeStore.js

const exec = require('child_process').exec;

let zipName = 'extension.zip';

// credentials and IDs from gitlab-ci.yml file
let REFRESH_TOKEN = process.env.REFRESH_TOKEN; 
let EXTENSION_ID = process.env.EXTENSION_ID;
let CLIENT_SECRET = process.env.CLIENT_SECRET;
let CLIENT_ID = process.env.CLIENT_ID;

// to fetch it from node_modules
let webstoreLocation = './node_modules/.bin/webstore';

uploadExtension();  // This just uploads - will not publish yet.

function uploadExtension(){
let cmd = getUploadCommand();
exec(cmd, (error, stdout, stderr) => {
   // console.log(`stdout: ${stdout}`);
  //  console.log(`stderr: ${stderr}`);
    if (error !== null) {
     // console.log(`exec error: ${error}`);
      console.log("uploadExtension failed in exec error");
      process.exit(1);
    } else {
      console.log('Successfully Uploaded the zip to chrome web store');
      publishExtension(); // on successful upload, call publish 
    }
  });
}

function publishExtension() {
  let cmd = getPublishCommand();
   exec(cmd, (error, stdout, stderr) => {
    console.log(`stdout: ${stdout}`);
    console.log(`stderr: ${stderr}`);
    if (error !== null) {
      //console.log(`exec error: ${error}`);
      console.log("exec error in PublishExtension");
      process.exit(1);
    } else {
      console.log('Successfully published the newer version');
    }
  });
}

function getUploadCommand() {
  return `${webstoreLocation} upload --source ${zipName} --extension-id ${EXTENSION_ID} --client-id ${CLIENT_ID} --client-secret ${CLIENT_SECRET} --refresh-token ${REFRESH_TOKEN}`;
}

function getPublishCommand() {
  return `${webstoreLocation} publish --extension-id ${EXTENSION_ID} --client-id ${CLIENT_ID} --client-secret ${CLIENT_SECRET} --refresh-token ${REFRESH_TOKEN}`;
}