Node.js – How to install jasmine-node (without using ‘sudo’ ideally)

So I'm a pretty spoiled rubyist and basically never have to install anything using sudo anymore. I've installed node.js and npm (granted, using the Mac 64-bit .pkg, which could have done gosh knows what on my system) and they work fine.

Now, executing the following:
npm install jasmine-node -g

Doesn't work and says, "Please try running this command again as root/Administrator." which I take to mean sudo npm install jasmine-node -g

Doing: npm install jasmine-node (not globally) works fine, but doesn't setup my path correctly, doesn't run from the command line, etc.

How should I install jasmine-node? cd to /usr/local/bin and install it (without the '-g' option) there? Use homebrew? Or use the sudo ... command I listed above?

Thanks.

/UPDATE: As mentioned above, I installed node.js & npm on my Lion OS X Mac (64-bit) using the universal installer and here are my node/npm listings in /usr/local/bin, in case they're of help:

-rwxr-xr-x  1 24561  wheel       355 Apr 11  2012 /usr/local/bin/node-waf
-rwxr-xr-x  1 24561  wheel  18930304 Oct 25 14:07 /usr/local/bin/node
lrwxr-xr-x  1 root   admin        38 Nov 12 10:00 /usr/local/bin/npm -> ../lib/node_modules/npm/bin/npm-cli.js

Also, I found this answer, which is one other option (in addition to the three I presented above).

Please let me know which method is recommended (again, ideally without using 'sudo' is my preference).

/END UPDATE

Here is what doing it with -g (globally) returns (not using sudo):

npm http GET https://registry.npmjs.org/jasmine-node
npm http 200 https://registry.npmjs.org/jasmine-node
npm http GET https://registry.npmjs.org/jasmine-node/-/jasmine-node-1.0.26.tgz
npm http 200 https://registry.npmjs.org/jasmine-node/-/jasmine-node-1.0.26.tgz
npm ERR! Error: EACCES, mkdir '/usr/local/lib/node_modules/jasmine-node'
npm ERR!  { [Error: EACCES, mkdir '/usr/local/lib/node_modules/jasmine-node']
npm ERR!   errno: 3,
npm ERR!   code: 'EACCES',
npm ERR!   path: '/usr/local/lib/node_modules/jasmine-node',
npm ERR!   fstream_type: 'Directory',
npm ERR!   fstream_path: '/usr/local/lib/node_modules/jasmine-node',
npm ERR!   fstream_class: 'DirWriter',
npm ERR!   fstream_stack: 
npm ERR!    [ 'DirWriter._create (/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23)',
npm ERR!      '/usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:37:53',
npm ERR!      'Object.oncomplete (fs.js:297:15)' ] }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! System Darwin 11.4.2
npm ERR! command "node" "/usr/local/bin/npm" "install" "jasmine-node" "-g"
npm ERR! cwd /Users/brad/play/troles
npm ERR! node -v v0.8.14
npm ERR! npm -v 1.1.65
npm ERR! path /usr/local/lib/node_modules/jasmine-node
npm ERR! fstream_path /usr/local/lib/node_modules/jasmine-node
npm ERR! fstream_type Directory
npm ERR! fstream_class DirWriter
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, mkdir '/usr/local/lib/node_modules/jasmine-node'
npm ERR! fstream_stack DirWriter._create (/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23)
npm ERR! fstream_stack /usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:37:53
npm ERR! fstream_stack Object.oncomplete (fs.js:297:15)
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /Users/brad/play/troles/npm-debug.log
npm ERR! not ok code 0