Auto-loading .nvmrc in JetBrains Junie terminal

I've been using JetBrains's Junie product for agentic AI coding since it went public in April 2025. It's been an overall great experience.

I noted it was struggling with a React/TypeScript project. When running yarn commands it wasn't honoring the .nvmrc file, so it didn't load the correct node version. This caused issues for files generated/built against different NodeJS versions.

My setup is slightly strange: because NVM takes a while to load, and I'm impatient, I don't load it automatically in my shell. Whereas the usual setup would be,

[ -s "/opt/homebrew/opt/nvm/nvm.sh" ] && \. "/opt/homebrew/opt/nvm/nvm.sh"

my .zsh-local-mac (included from .zshrc) sets up an alias:

alias load-nvm='[ -s "/opt/homebrew/opt/nvm/nvm.sh" ] && \. "/opt/homebrew/opt/nvm/nvm.sh"'

Without that line, Junie doesn't have NVM enabled in its terminal. But just loading NVM isn't enough, we need to also load the .nvmrc file.

Junie helpfully sets the $TERMINAL_EMULATOR to JetBrains-JediTerm. So I added this to my shell config:

if [[ "$TERMINAL_EMULATOR" == "JetBrains-JediTerm" ]]; then
  load-nvm

  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
fi

After making this change, Junie terminals honor .nvmrc files. This is vital to run tests, e.g., yarn jest src/file.test.tsx, allowing the agent to iterate more intelligently on its progress.