The following script installs and configure `commitlint` and `husky` into your project.

commitlint-install.sh

#!/usr/bin/env bash
#
# Author: Dmytro Borysovskyi ([email protected])
# Date : 04.09.2019
#
# Description: The following script installs and configures `commitlint` and `husky` into your project.
#
VERSION=0.0.2

# just a helper for echo
function print {
    echo -e "$1"
}

# colorize console
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
RED='\033[0;31m'
NC='\033[0m'

CWD=$0
DIR=$1

#
# Validate argument (path to repo)
#
shift $((OPTIND - 1))

if [ ! "${DIR}" ]
then
    print "${RED}Please provide the repository path."
    exit 2
fi

if [ ! -d "${DIR}" ] 
then 
    print "${RED}${DIR}: No such directory"
    exit 2
fi

cd $DIR || exit

print "${GREEN}I'm going to update your project:"
print "📂 ${PWD}${NC}\n"

# prompt whether to proceed or not
read -e -p "Are you sure you want to continue? [Y/n] " YN </dev/tty
[[ $YN != "y" && $YN != "Y" && $YN != "" ]] && exit


print "\nChecking your environment..."
print "node version $(node -v)"
print "npm version  $(npm -v)"
git --version

print "\nSeems like we are ready to proceed, so let's do it. Please fasten your seatbelt 🚀🚀🚀 \n"

npm install --save-dev --loglevel=error --unsafe-perm=true --allow-root @commitlint/cli @commitlint/config-conventional husky

COMMITLINT_CONFIG_FILENAME="commitlint.config.js"
COMMITLINT_CONFIG_CONTENT="module.exports = {
  extends: ['@commitlint/config-conventional'],
  rules:   {
    'type-enum': [
      2,
      'always',
      [
        'build',
        'chore',
        'ci',
        'docs',
        'feat',
        'fix',
        'perf',
        'refactor',
        'revert',
        'style',
        'test'
      ]
    ]
  }
}"

printf '%s' "$COMMITLINT_CONFIG_CONTENT" > "$PWD/$COMMITLINT_CONFIG_FILENAME"

HUSKY_CONFIG='husky: {"hooks": {"commit-msg": "commitlint -E HUSKY_GIT_PARAMS"}}'

node -p "JSON.stringify(
    (({ scripts: { prepush, ...scripts }, ...props }) => ({
      ...props,
      scripts,
      ...{
        husky: {
          hooks: {
            'commit-msg': 'commitlint -E HUSKY_GIT_PARAMS',
          },
        },
      },
    }))(require('./package.json')),
    null,
    2,
)" | cat > package-copy.json && mv package-copy.json package.json

print "${GREEN} Great! Everything is ready. Enjoy 😌"