Boilerplate creation algorithm:

1. Create npm project by 'npm init'
2. Add ESLint linter support by 'npm init @eslint/config'. Crediting Timur Shemsedinov for ESLint config example
3. Add Git by 'sudo apt-get install git'. Then create remote repo in GitHub. Then use this GitHub guide
4. Add .gitignore file to ignore all unnecessary files/folders which need not to be in the version control. Crediting Timur Shemsedinov for .gitignore config example
5. Add .travis.yml Travis CI file to let it know what to do in repository. Configure it as you wish or take my [example]
6. After successfull build you can add the Travis build resulsts icon from https://travis-ci.org/{username or org}/{repository} like this: