change_nvm.md

Change node version for current project.

This is a little ZSH function that hooks change cwd and checks for our ./deployment.json it then uses nvm to change the current node version to the one required by the project.

Install deps

• jq
• nvm

Add this to .zshrc

function set_node_version() {
  if [ -e ./deployment.json ] 
  then
    desired_node_ver=`cat ./deployment.json | jq --raw-output '.setup.nodejs.version'`
    current_node_ver=`nvm current`
    if [ -n $desired_node_ver -a $desired_node_ver != $current_node_ver ]
    then
      nvm ls | grep -q $desired_node_ver
      if [ $? -ne 0 ]; then
          nvm install $desired_node_ver
      else
          nvm use $desired_node_ver
      fi
    fi
  fi
}

chpwd_functions=(${chpwd_functions[@]} "set_node_version")

I did change the nvm install line to below just to speed it up if no install is needed

        nvm ls | grep -q $desired_node_ver
        if [ $? -ne 0 ]; then
            nvm install $desired_node_ver
        else
            nvm use $desired_node_ver
        fi

Nice @timmyw, updated the example to include your changes :)