Error when I try to run npm install - angularjs

Question

I'm just trying to do the first angular.js tutorial on the official website. When I try to run npm install from my project directory I get the following error.
My package.json file is given below.
{
"version": "0.0.0",
"private": true,
"name": "angular-phonecat",
"description": "A tutorial application for AngularJS",
"repository": "https://github.com/angular/angular-phonecat",
"license": "MIT",
"devDependencies": {
"karma": "^0.12.16",
"karma-chrome-launcher": "^0.1.4",
"karma-jasmine": "^0.1.5",
"protractor": "~1.0.0",
"http-server": "^0.6.1",
"tmp": "0.0.23",
"bower": "^1.3.1",
"shelljs": "^0.2.6"
},
"scripts": {
"postinstall": "bower install",
"prestart": "npm install",
"start": "http-server -a 0.0.0.0 -p 8000",
"pretest": "npm install",
"test": "node node_modules/karma/bin/karma start test/karma.conf.js",
"test-single-run": "node node_modules/karma/bin/karma start test/karma.conf.js --single-run",
"preupdate-webdriver": "npm install",
"update-webdriver": "webdriver-manager update",
"preprotractor": "npm run update-webdriver",
"protractor": "protractor test/protractor-conf.js",
"update-index-async": "node -e \"require('shelljs/global'); sed('-i', /\\/\\/##NG_LOADER_START##[\\s\\S]*\\/\\/##NG_LOADER_END##/, '//##NG_LOADER_START##\\n' + cat('bower_components/angular-loader/angular-loader.min.js') + '\\n//##NG_LOADER_END##', 'app/index-async.html');\""
}
}
Can someone help me to solve this problem. Thanks.

Answer 1

The messages are warnings, sometimes that just happens, and they often are uneeded anyway.
As long as the main components, Bower, Protractor, Karma etc are working, then I would try just carry on with the tutorial.
You can test they are working by running their commands, e.g.
./node_modules/.bin/bower help
But
I think one issue I had with npm and running those commands is that they dont just run like the angular tutorial says.
So where the tutorial says, run this:
protractor test/protractor-conf.js
You might have to modify the command to this
./node_modules/.bin/protractor test/protractor-conf.js
Same with bower, karma etc
e.g.
put this in front of the commands
./node_modules./bin
the ./ says run this as a script and the path is so you access the scripts in the node_modules/.bin directories
Update
If you want to run a karma test:
First, make sure you are in the root directory of the project
./node_modules/.bin/karma start test/karma.conf.js --single-run