autoload-nvmrc.sh

# @see https://stackoverflow.com/questions/57110542/how-to-write-a-nvmrc-file-which-automatically-change-node-version
#
# To autoload the specified node version
# You need to add something else to your shell configuration depending on what you use bash or zsh
# To get the exact configuration for each of them, please follow the instructions in the corresponding shell config section.
# In my case I'm using zsh so I do need to add this at the end of my .zshrc file:

# place this after nvm initialization!
autoload -U add-zsh-hook
load-nvmrc() {
  local node_version="$(nvm version)"
  local nvmrc_path="$(nvm_find_nvmrc)"

  if [ -n "$nvmrc_path" ]; then
    local nvmrc_node_version=$(nvm version "$(cat "${nvmrc_path}")")

    if [ "$nvmrc_node_version" = "N/A" ]; then
      nvm install
    elif [ "$nvmrc_node_version" != "$node_version" ]; then
      nvm use
    fi
  elif [ "$node_version" != "$(nvm version default)" ]; then
    echo "Reverting to nvm default version"
    nvm use default
  fi
}
add-zsh-hook chpwd load-nvmrc
load-nvmrc