What is the recommended way to install Node.js, nvm and npm on MacOS X?

Question

Using homebrew install nvm:
```
brew update
brew install nvm
source $(brew --prefix nvm)/nvm.sh
```
Add the last command to the .profile, .bashrc or .zshrc file to not run it again on every terminal start. So for example to add it to the .profile run:
```
echo "source $(brew --prefix nvm)/nvm.sh" >> ~/.profile
```
If you have trouble with installing nvm using brew you can install it manually (see here)
Using nvm install node or iojs (you can install any version you want):
```
nvm install 0.10
# or
nvm install iojs-1.2.0
```
npm is shipping with node (or iojs), so it will be available after installing node (or iojs). You may want to upgrade it to the latest version:
```
$ npm install -g npm@latest
```
UPD Previous version was ~~npm update -g npm~~. Thanks to @Metallica for pointing to the correct way (look at the comment bellow).
Using npm install ionic:
```
npm install -g ionic
```
What about ngCordova: you can install it using npm or bower. I don’t know what variant is more fit for you, it depends on the package manager you want to use for the client side. So I’ll describe them both:
1. Using npm: Go to your project folder and install ng-cordova in it:
```
npm install --save ng-cordova
```
2. Using bower: Install bower:
```
 npm install -g bower
```
  And then go to your project folder and install ngCordova in it:
```
 bower install --save ngCordova
```

PS