Add Git Branch Name to Terminal Prompt (MacOS Catalina zsh)

Open ~/.zshrc in your favorite editor and add the following content to the bottom.

function parse_git_branch() {
    git branch 2> /dev/null | sed -n -e 's/^\* \(.*\)/[\1]/p'
}

COLOR_DEF=$'\e[0m'
COLOR_USR=$'\e[38;5;243m'
COLOR_DIR=$'\e[38;5;197m'
COLOR_GIT=$'\e[38;5;39m'
setopt PROMPT_SUBST
export PROMPT='${COLOR_USR}%n ${COLOR_DIR}%~ ${COLOR_GIT}$(parse_git_branch)${COLOR_DEF} $ '

Original gist for Bash by Jose Quintana: https://gist.github.com/joseluisq/1e96c54fa4e1e5647940