Update npm to @angular 2 is not available
<p>I want to upgrade from angular 2 Beta 15 to <strong>angular 2 RC1.</strong></p>

<p>I am using Visual Studio 2015.</p>

<p>In my npm package.json inside Visual Studio I do:</p>

<pre><code> "dependencies": {
    "@angular/core": "Unavailable",
}
</code></pre>

<p>but I get unavailable.</p>

<p>Then I did some updates:</p>

<pre><code>I updated my nodejs to v6.1.0.
I updated my npm to v3.8.9.
</code></pre>

<p>It still shows unavailable in Visual Studio 2015.</p>

<p>What can I still try to make it work?</p>

<p>UPDATE</p>

<p>After doing what @David Pine suggested I got this error:</p>

<pre><code>====Executing command 'npm install'====


npm WARN package.json ASP.NET@0.0.0 No description
npm WARN package.json ASP.NET@0.0.0 No repository field.
npm WARN package.json ASP.NET@0.0.0 No README data
npm http GET https://registry.npmjs.org/angular/core
npm http 404 https://registry.npmjs.org/angular/core
npm ERR! 404 Not Found
npm ERR! 404 
npm ERR! 404 'angular/core' is not in the npm registry.
npm ERR! 404 You should bug the author to publish it
npm ERR! 404 It was specified as a dependency of 'ASP.NET'
npm ERR! 404 
npm ERR! 404 Note that you can also install from a
npm ERR! 404 tarball, folder, or http url, or git url.
npm ERR! System Windows_NT 6.2.9200
npm ERR! command "C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\Common7\\IDE\\Extensions\\Microsoft\\Web Tools\\External\\\\node\\node" "C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\Common7\\IDE\\Extensions\\Microsoft\\Web Tools\\External\\npm\\node_modules\\npm\\bin\\npm-cli.js" "install"
npm ERR! cwd C:\TGB.2016\TGB.Web
npm ERR! node -v v0.10.31
npm ERR! npm -v 1.4.9
npm ERR! code E404

====npm command completed with exit code 1====
</code></pre>

<p><strong>UPDATE 2</strong></p>

<p>I also added the correct path to nodejs in my Visual Studio options see:</p>

<p><a href="http://ryanhayes.net/synchronize-node-js-install-version-with-visual-studio-2015/" rel="noreferrer">http://ryanhayes.net/synchronize-node-js-install-version-with-visual-studio-2015/</a></p>