First:
lsbom -f -l -s -pf /var/db/receipts/org.nodejs.pkg.bom | while read f; do sudo rm /usr/local/${f}; done
sudo rm -rf /usr/local/lib/node /usr/local/lib/node_modules /var/db/receipts/org.nodejs.*
To recap, the best way (I've found) to completely uninstall node + npm is to do the following:
go to /usr/local/lib and delete any node and node_modules
cd /usr/local/lib
sudo rm -rf node*
go to /usr/local/include and delete any node and node_modules directory
cd /usr/local/include
sudo rm -rf node*
if you installed with brew install node, then run brew uninstall node in your terminal
brew uninstall node
check your Home directory for any "local" or "lib" or "include" folders, and delete any "node" or "node_modules" from there
go to /usr/local/bin and delete any node executable
cd /usr/local/bin
sudo rm -rf /usr/local/bin/npm
ls -las
You may need to do the additional instructions as well:
sudo rm -rf /usr/local/share/man/man1/node.1
sudo rm -rf /usr/local/lib/dtrace/node.d
sudo rm -rf ~/.npm
Source: tonyMtz