`npm install` or `yarn` depending on which lock file is present

node_i

node_i() {
  [ -f package-lock.json ] && NPM_I=true;
  [ -f yarn.lock ] && YARN=true;
  if [[ $NPM_I = true && $YARN = true ]]; then
    echo -ne "\033[0;31myou have a package-lock.json and a yarn.lock, you should pick up only one!\033[0m"
    echo ""
  else
    if [ $NPM_I ]; then
      npm i
    fi

    if [ $YARN ]; then
      yarn
    fi
  fi
}