Thank you for your prompt reply. I am trying to implement the above solution since yesterday. But I am running into some issues.
As mentioned in the documentation in NPM section, download the bonus zip file and in the "npm-install-this" directory, copy the "gsap-bonus.tgz"
file and drop it in the project directory and simply hit "npm install ./gsap-bonus.tgz" command
Please find attached the screenshots below.
I even tried the second solution by creating a new custom library and pointing this directory https://github.com/greensock/GSAP/