A binstub to seamlessly alias @npm to @pnpm.

pnpm.zsh

#! /bin/zsh -f
disable which # builtin
alias -g i=install

pnpm () { command pnpm $@ --config ${NPM_CONFIG_USERCONFIG:-~/.npmrc} }

if (which -s pnpm) npm () {
  NODE_BIN=`brew --prefix node`/bin
  export PATH=$PATH:$NODE_BIN

  case $@ in
    -g*) npm $2 -g ${@[3,#]};;
    install*)
      pnpm $@ &
      if (which -s npm-install-peers) npm-install-peers;;
    (rm|un)*-g*)
      pnpm $@
      rm $NODE_BIN/$@[#];;
    *) pnpm $@;;
  esac
}

[ $ZSH_EVAL_CONTEXT = toplevel ] && npm $@