Lazy Load Homebrew NVM but still have default aliased Node in PATH

.zshrc

# Based on https://gist.github.com/gfguthrie/9f9e3908745694c81330c01111a9d642#gistcomment-3143229


(...)

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"

DEFAULT_NODE_VER='default';
while [ -s "$NVM_DIR/alias/$DEFAULT_NODE_VER" ]; do
  DEFAULT_NODE_VER="$(<$NVM_DIR/alias/$DEFAULT_NODE_VER)"
done;

export PATH="$NVM_DIR/versions/node/v${DEFAULT_NODE_VER#v}/bin:$PATH"
alias nvm='unalias nvm; [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" --no-use; nvm'