Change nvm version using RVM hooks (place in ~/.rvm/hooks/after_cd_nvm)

after_cd_nvm

#!/usr/bin/env bash

# Requirements:
# brew install jq node
# nvm use system; npm -g install semver

if [ -f package.json ]; then
  requested_node_version=$(jq -r '.engines.node' package.json)
  if [ "$requested_node_version" != "" ]; then
    node_version=$(nvm_ls | xargs env NODE_VERSION=system ~/.nvm/nvm-exec semver -r "$requested_node_version")
    [ "$node_version" != "" ] && [ $(nvm current) != "v$node_version" ] && nvm use "$node_version"
  fi
fi