Undefined Rants

Code, Ramen and Avocado

NPM Installation Issues + AngularJS Set Up

Package manager is tool for software developer to install, publish and manage dependecies. Just like other widely used programming languages, nodejs has its own package manager – npm. In this blog, I’m going to set up AngularJS develoment environment with

  • Yeoman
  • Grunt
  • Bower

But before that I have to set up npm on my machine. Setting up npm can be as easy as grabbing package from nodejs. However there are other ways to install. For instance, command line or other package managers. After npm is successfully installed, we can check it.

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node -v
npm -v

Yes, npm is included in the latest node package. Next, we want to install Yeoman, Grunt and Bower by using npm. But before that, I need to alter permission of some files on my system to prevent the infamous Please try running this command again as root/Administrator error.

Of course I can avoid this error by using sudo npm install package but this is not the recommended way. Instead, I’ll just use chown to change permission of /usr/local files.

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sudo chown -R $USER /usr/local

By this way some error will be eliminated BUT this might not be enough. In some case, there will be other permission issue of other directory. This is the error I get when I first install npm.

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npm ERR! Error: EACCES, open '/Users/username/.npm/-/all/.cache.json'
npm ERR!  { [Error: EACCES, open '/Users/username/.npm/-/all/.cache.json']
npm ERR!   errno: 3,
npm ERR!   code: 'EACCES',
npm ERR!   path: '/Users/username/.npm/-/all/.cache.json' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.

Yes, I do not have ownership permission on my /.npm/ folder which is located in my home directory. Here is a solution from stack overflow.

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sudo chown -R `whoami` ~/.npm

In this case system will automatically substitude username into the whomi. Also the ~ indicates home directory path. After this we should be fine to set up Angular JS environment. I’ll install Yeoman, Grunt and Bower globally by this command.

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npm install -g yo grunt-cli bower

Ok let’s get Angular JS set up. This can be done easily by using Yeoman.

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npm install -g generator-angular
mkdir angularapp
cd angularapp
yo angular

This will create a new folder angularapp and scaffold a new AngularJS application in current folder. Ok, done for environment. We can start to ng right now.

Other issues

To use grunt as server, we also have to install the latest version of Grunt in project folder, and add it to devDependencies.

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npm install grunt --save-dev

Also we need to do the same thing to enable karma.

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npm install grunt-karma --save-dev
npm install karma-jasmine --save-dev
npm install karma-chrome-launcher --save-dev

Note that jasmine is my testing framework and I am using chrome browser.

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