Switch to target node version of project by nvm automatically(only when .nvmrc exist in current folder)

cd-nvm.sh

# put this snippet in your shell config(ex: ~/.bashrc, ~/.zshrc, ...)
# make sure `.nvmrc` exsits in your project folder
function init-node {
  # switch node version by nvm after changing folder without AVN
  if [[ -f ".nvmrc" ]]; then
    # initialize nvm if necessary
    if [[ -z $(nvm 2>/dev/null) ]]; then
      # nvm is not initailized
      echo 'initialize nvm ...'
      source ~/.nvm/nvm.sh
    fi
    # switch to target version
    if [ $(cat "./.nvmrc") != $(node --version | sed "s/v//") ]; then
      nvm use
    fi
  fi
}
function cd {
  builtin cd "$@"
  init-node
}
init-node # check after entering shell