bash - override cd to test for .nvmrc and instruct nvm to change node versions if present

.bashrc

# hook into the cd command to test for the presence
# of .npmrc and then switch node versions based on that
cd() {     
  builtin cd "$@" 
  if [ -d $NVM_DIR ]
  then
    if [ -f ./.nvmrc ]
    then
      # cat ./.nvmrc
      LOCAL_NODE_VERSION=`cat .nvmrc`
      nvm use $LOCAL_NODE_VERSION
    fi
  fi
}