karma coverage install error

I cannot install karma coverage

npm WARN package.json Dependency 'requirejs' exists in both dependencies and dev
Dependencies, using 'requirejs@^2.1.18' from dependencies
npm WARN engine coffee-script-redux@2.0.0-beta4: wanted: {"node":"0.6.x || 0.8.x
"} (current: {"node":"0.12.4","npm":"2.10.1"})
npm ERR! Windows_NT 6.1.7601
npm ERR! argv "C:\Program Files\nodejs\\node.exe" "C:\Program Files\nodejs
\node_modules\npm\bin\npm-cli.js" "install"
npm ERR! node v0.12.4
npm ERR! npm v2.10.1
npm ERR! path C:\Users\jose\node\heroku\desolate-taiga-1397\node_modules\phantom
js\bin\phantomjs
npm ERR! code ENOENT
npm ERR! errno -4058

npm ERR! enoent ENOENT, chmod 'C:\Users\jose\node\heroku\desolate-taiga-1397\nod
e_modules\phantomjs\bin\phantomjs'
npm ERR! enoent This is most likely not a problem with npm itself
npm ERR! enoent and is related to npm not being able to find a file.
npm ERR! enoent

npm ERR! Please include the following file with any support request:
npm ERR! C:\Users\jose\node\heroku\desolate-taiga-1397\npm-debug.log

{
"name": "sharelinks",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node ./bin/www"
},
"dependencies": {
"body-parser": "~1.12.4",
"cookie-parser": "~1.3.5",
"crypto-js": "^3.1.5",
"debug": "~2.2.0",
"express": "~4.12.4",
"jade": "~1.9.2",
"jsonwebtoken": "^5.0.2",
"morgan": "~1.5.3",
"pg": "^4.4.0",
"pg-hstore": "^2.3.2",
"requirejs": "^2.1.18",
"sequelize": "^3.2.0",
"serve-favicon": "~2.2.1"
},
"devDependencies": {
"chai": "^1.9.1",
"grunt": "^0.4.5",
"grunt-contrib-jshint": "^0.10.0",
"grunt-karma": "^0.8.3",
"jasmine-core": "^2.3.4",
"karma": ">=0.12.8",
"karma-chai": "^0.1.0",
"karma-jasmine": "^0.3.6",
"karma-mocha": "^0.1.4",
"karma-phantomjs-launcher": "^0.1.4",
"load-grunt-tasks": "^0.6.0",
"mocha": "^1.20.1",
"requirejs": "^2.1.19"
}

}

tried everything.

Start with the posted package.json and reproduce npm install using the reported Windows, Node 0.12.4, and npm 2.10.1 environment. Trace the ENOENT failure at node_modules/phantomjs/bin/phantomjs and review the duplicate requirejs declarations; done means the Karma coverage dependencies install successfully.

Written by the indexing model from the issue text.