Shell function that runs nodejs package manager based on lockfile (npm, yarn, pnpm, bun)

pm.sh

function pm() {  
  if [ -f package-lock.json ]; then
    echo "Running with $(tput bold)npm"
    command npm "$@"
  elif [ -f yarn.lock ]; then
    echo "Running with $(tput bold)yarn"
    command yarn "$@"
  elif [ -f pnpm-lock.yaml ]; then
    echo "Running with $(tput bold)pnpm"
    command pnpm "$@"
  elif [ -f bun.lockb ]; then
    echo "Running with $(tput bold)bun"
    command bun "$@"
  else
    echo "No lockfile found for npm, yarn, pnpm or bun.\nRunning with $(tput bold)npm as the default package manager."
    command npm "$@"
  fi
}

It can also be written with case statement:

function pm() {
  case 1 in
    $(test -f package-lock.json && echo 1) )
      echo "Running with $(tput bold)npm"
      command npm "$@"
      ;;
    $(test -f yarn.lock && echo 1) )
      echo "Running with $(tput bold)yarn"
      command yarn "$@"
      ;;
    $(test -f pnpm-lock.yaml && echo 1) )
      echo "Running with $(tput bold)pnpm"
      command pnpm "$@"
      ;;
    $(test -f bun.lockb && echo 1) )
      echo "Running with $(tput bold)bun"
      command bun "$@"
      ;;
    * )
      echo "No lockfile found for npm, yarn, pnpm, or bun.\nRunning with $(tput bold)npm as the default package maneger."
      command "$DEFAULT_MANAGER" "$@"
      ;;
  esac
}