npm install
Then
npm run build
Create dw.json file in the root of the project(SFCC folder).
{
"hostname": "your-sandbox-hostname.demandware.net", //(find it in the swagger sandbox information)
"username": "AM username like me.myself@company.com", //(your sfcc login id)
"password": "your_webdav_access_key", //(your passowrd)
"code-version": "version_to_upload_to" //(find it in Administration > Site development > Code Deployment )
}
Upload the configuration using the Prophet Debugger and VS Code.