Nodejs 11x release installation help

I have installed latest nodejs from https://nodejs.org/en/ , and now I see my project dependencies are broken with this version. I want to go back to 11.15 release. So I went to https://nodejs.org/dist/latest-v11.x/ and downloaded node-v11.15.0-darwin-x64.tar.gz and unzipped it too. But I don't see any .dmg package in it. How do I uninstall v12.7.0 and go to 11.15? Please help

Submitted July 25, 2019 at 12:36PM by arup_r