npm install script puts stuff in wrong directory

gistfile1.txt

$ brew --version
0.8

$ which node
/usr/local/bin/node

$ node -v
v0.4.12

$ ls -l `which node`
lrwxr-xr-x  1 mroth  staff  30 Oct 25 18:55 /usr/local/bin/node -> ../Cellar/node/0.4.12/bin/node

$ curl http://npmjs.org/install.sh | sh
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  7147  100  7147    0     0  19194      0 --:--:-- --:--:-- --:--:-- 82149
tar=/usr/bin/tar
version:
bsdtar 2.8.3 - libarchive 2.8.3
Installing without make. This may fail.
fetching: http://registry.npmjs.org/npm/-/npm-1.0.102.tgz
0.4.12
1.0.102
cleanup prefix=/usr/local
altprefix=/usr/local/Cellar/node/0.4.12

All clean!
/usr/local/Cellar/node/0.4.12/bin/npm -> /usr/local/Cellar/node/0.4.12/lib/node_modules/npm/bin/npm-cli.js
/usr/local/Cellar/node/0.4.12/bin/npm_g -> /usr/local/Cellar/node/0.4.12/lib/node_modules/npm/bin/npm-cli.js
/usr/local/Cellar/node/0.4.12/bin/npm-g -> /usr/local/Cellar/node/0.4.12/lib/node_modules/npm/bin/npm-cli.js
npm@1.0.102 /usr/local/Cellar/node/0.4.12/lib/node_modules/npm 
It worked