Lazy load nvm to avoid slow shell start-up times

lazy-nvm.sh

# Lazy load NVM!
# Add every binary that requires nvm, npm or node to run to an array of node globals
NODE_GLOBALS=(`find ~/.nvm/versions/node -maxdepth 3 -type l -wholename '*/bin/*' | xargs -n1 basename | sort | uniq`)
NODE_GLOBALS+=("node")
NODE_GLOBALS+=("nvm")
NODE_GLOBALS+=("npx")

# Lazy-loading nvm + npm on node globals call
load_nvm () {
  export NVM_DIR=~/.nvm
  [ -s "$(brew --prefix nvm)/nvm.sh" ] && . "$(brew --prefix nvm)/nvm.sh"
  if [ -f "$(brew --prefix nvm)/bash_completion" ]; then
    [ -s "$(brew --prefix nvm)/bash_completion" ] && \. "$(brew --prefix nvm)/bash_completion"
  fi
}
 
# Making node global trigger the lazy loading
for cmd in "${NODE_GLOBALS[@]}"; do
  eval "${cmd}(){ unset -f ${cmd} >/dev/null 2>&1; load_nvm; ${cmd} \$@; }"
done
unset cmd NODE_GLOBALS