How to install/update/run npm, gem, and bundler for Jekyll-based minimal mistake management in macOS

As a minimal mistake Jekyll theme user, I use the following commands to set up and use npm, gem, and bundler for macOS.

npm

Installation / Update

• Install npm

  $ brew install node
  

  Note: Type node -v and npm -v to validate the installation.

Usage

• Install packages (based on package.json)

  $ sudo npm install
  

• Run scripts

  $ sudo npm run build:js
  

Gem and Bundler

Installation

• Install rbenv and ruby-build

  $ brew install rbenv
  $ brew install ruby-build
  $ brew install ruby-install
  $ ruby-install ruby
  

• Set environment path

  $ vim ~/.zshrc
  
  ...
  ## rbenv
  export PATH="$HOME/.rbenv/shim:$PATH"
  if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi
  ...
  

• Install ruby

  # check ruby versions
  $ rbenv install -l
  
  # install ruby
  $ rbenv install 3.1.2
  
  # select ruby
  $ rbenv global 3.1.2
  $ rbenv rehash
  
  # check ruby
  $ rbenv versions
  
  # reload zsh
  $ exec zsh -l
  

• Install bundler

  $ gem install bundler
  

• Install dependencies using bundler (based on Gemfile)

  $ bundle install
  

• Run local jekyll server

  $ bundle exec jekyll serve --host .. --port .. --livereload
  

References

1. How to install/update/run npm, gem, and bundler for Jekyll-based minimal mistake management)
2. You don’t have write permissions for the /Library/Ruby/Gems/2.3.0 directory. (mac user))