NPM failover in bash

functions.sh

# description:
#   implement npmjs registry failover in your shell
#
# setup:
#   npm install -g npm-delegate 
#
# usage:
#   npms install through
#   npms i through async
#

npms() {
  PORT=5983
  REGLIST="http://registry.npmjs.org http://registry.nodejitsu.com http://registry.npmjs.eu"
  (npm-delegate $REGLIST &)
  # wait for the delegate server
  while ! nc -vz localhost $PORT &> /dev/null ; do sleep 1; done
  # shadow npm command with registry argument
  npm --registry http://localhost:$PORT "$@"
  kill $(ps aux | grep 'npm-delegate' | awk '{print $2}')
}

i think im just going to go with trying all of them and using an install command

cd module && npmi

export NPM_REGS="http://registry.npmjs.org http://registry.nodejitsu.com http://registry.npmjs.eu http://npm.nodejs.org.au:5984"

npmi(){
  for reg in $NPM_REGS
  do
    npm install --registry $reg
    if [ "$?" -eq "0" ]; then
      echo "install from $reg successful!"  
      break  
    else
      echo "npm install from $reg failed. =("
    fi
  done
}