Installing Node.js via package manager

https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager
The packages on this page are maintained and supported by their respective packagers, not the node.js core team. Please report any issues you encounter to the package maintainer. If it turns out your issue is a bug in node.js itself, the maintainer will report the issue upstream.

For Debian Wheezy, your best bet is to compile node by yourself:

sudo apt-get install python g++ make checkinstall
mkdir ~/src && cd $_
wget -N http://nodejs.org/dist/node-latest.tar.gz
tar xzvf node-latest.tar.gz && cd node-v*
./configure
checkinstall #(remove the "v" in front of the version number in the dialog)
sudo dpkg -i node_*

Uninstall:

sudo dpkg -r node

In case you get a permission denied on the node executable, an alternative path might be:

umask 0022
./configure
make
checkinstall -D --umask 0022 --reset-uids --install=no
dpkg -i node_*.deb