Put it to `.zshrc`

ni.sh

ni() {
  # Add packages
  if [ "${1:-}" != "" ]; then
    if [ -f pnpm-lock.yaml ] || [ -f ../../pnpm-lock.yaml ]; then
      pnpm install $@
    else
      npm install $@
    fi
    return
  fi

  # Prefer installing using the lock file to avoid faker.js like issue.
  # Just call the original command manually when need to update the lock
  if [ -f pnpm-lock.yaml ] || [ -f ../../pnpm-lock.yaml ]; then
    pnpm install --frozen-lockfile
  elif [ -f package-lock.json ] ; then
    npm ci
  else
    npm install
  fi
}