proxy npm to call pnpm

npm

#!/bin/bash
set -e
set -o pipefail
case "$1" in
  i|install)
    shift
    case "$1" in
      -g|--global)
        shift
        npx --no npm i -g $@
        exit $?
        ;;
    esac
    echo >&2 original: npm $@
    echo >&2 mapto: pnpm install $@
    pnpm install $@
    exit $?
    ;;
esac
npx --no npm "$@"