NVM shell script for node projects

nvm.bash

#!/bin/bash

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

NVM_NODE_VERSION=""
NODE_VERSION=$(node --version)
IS_WSL=0
SKIP_NVM=0

if grep -q microsoft /proc/version >/dev/null 2>&1; then
  IS_WSL=1
fi

initNVM() {
  export NVM_DIR="$HOME/.nvm"
    [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
    [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
}

check_nvm () {
  if ! command -v nvm &> /dev/null
  then
      echo "Error: nvm could not be found"
      echo "Install instructions: https://github.com/nvm-sh/nvm#installing-and-updating"
      exit 1
  fi
}

get_nvm_node_version() {
  if [ ! -f .nvmrc ]; then
    echo "Error: .nvmrc file was not found"
    exit 1
  fi

  NVM_NODE_VERSION=$(head -1 .nvmrc | tr -d '[:space:]')
}

check_nvm_required_node() {
  if [ -z "${NVM_NODE_VERSION}" ]; then
    echo "Error: not able to retrive required node version"
  fi

  CURRENT_VERSION=$(nvm current)

  if [ "${CURRENT_VERSION}" != "${NVM_NODE_VERSION}"  ]; then
    if  nvm ls | grep -q "$NVM_NODE_VERSION"
    then
        nvm use "$NVM_NODE_VERSION"
    else
      nvm_ask_install "$NVM_NODE_VERSION"
    fi
  fi
}


nvm_ask_install() {
  VERSION="$1"

  echo "Node version ${VERSION} was not found in nvm."
  read -r -p "Do you want to install it (Y/n)? " answer

    case ${answer:0:1} in
      n|N )
        echo "No"
      ;;
      "")
        nvm_install_version "$VERSION"
      ;;
      y|Y)
        nvm_install_version "$VERSION"
      ;;
      * )
        nvm_ask_install "$VERSION"
      ;;
    esac
}

nvm_install_version() {
  VERSION="$1"
  if [ -z "$VERSION" ]; then
    echo "Error: Node version not informed."
    exit 1
  fi

  if nvm install "$VERSION"
  then
    check_nvm_required_node
  else
    echo "An error occurred while installing Node. Aborting."
    exit 1
  fi

  check_nvm_required_node
}

check_node_version() {
  REQUIRED_MAJOR_VERSION=${NVM_NODE_VERSION%.*.*}
  NODE_MAJOR_VERSION=${NODE_VERSION%.*.*}

  if [ "${REQUIRED_MAJOR_VERSION}" = "${NODE_MAJOR_VERSION}" ]; then
    SKIP_NVM=1
  fi
}

# -------------------------------------------------------------------------------------------------

for arg in "$@"
do
    case $arg in
        --skip-nvm)
        SKIP_NVM=1
        shift
        ;;
    esac
done

if [ $SKIP_NVM = 0 ]; then
  get_nvm_node_version
  check_node_version
fi

if [ $IS_WSL = 1 ]; then
    echo -e "Warning: You are using Windows WSL. This may be problematic if not correctly configured\n\n"
fi

if [ $SKIP_NVM = 0 ]; then
  initNVM
  check_nvm
  check_nvm_required_node
else
  echo -e "Skipping NVM configuraiton...\n\n"
fi

scripts.bash

#!/bin/bash

# For NPM Vue projects

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

. "${DIR}"/nvm.sh

SCRIPT="${1}"
ARGS=${*#"$1"}

case ${SCRIPT} in
  serve )
    npx vue-cli-service serve $ARGS
  ;;
  build )
    npx vue-cli-service build $ARGS
  ;;
  lint )
    npx vue-cli-service lint $ARGS
  ;;
  setup )
    npm install --legacy-peer-deps
  ;;
  install )
    npm install $ARGS
  ;;
  "")
    echo "Available scripts: setup, serve, build, lint"
  ;;
  * )
    echo "Error: invalid script \"${SCRIPT}\". Aborting..."
    exit 1
  ;;
esac