Bash function to checkout and update dependencies in a Rails project

main.sh

cob() {
  git checkout $1
  git fetch origin

  update_js="$(git diff --name-only origin/$1 package.json)"
  update_sql="$(git diff --name-only origin/$1 db/structure.sql)"
  update_gem="$(git diff --name-only origin/$1 Gemfile)"

  git pull

  if [ -n "${update_js}" ]; then
     yarn install --check-files
  fi

  if [ -n "${update_sql}" ]; then
    rails db:reset
  fi

  if [ -n "${update_gem}" ]; then
    bundle
  fi
}

Example of utilisation: cob main