What is “pre-commit” Package?

Framework for managing multi-language pre-commit hooks
For more details: http://pre-commit.com/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install pre-commit.

  brew install pre-commit

Now, use pre-commit!