title: Cannot install Webpack with NPM
body: <p>npm install --save-dev webpack gives me the following error:</p>
  
  <pre><code>$ npm install --save-dev webpack
  
  &gt; uglifyjs-webpack-plugin@0.4.6 postinstall C:\Users\Martin\Desktop\JS\React\Mi-config\node_modules\uglifyjs-webpack-plugin
  &gt; node lib/post_install.js
  
  npm ERR! path C:\Users\Martin\Desktop\JS\React\Mi-config\node_modules\fsevents\node_modules\ansi-regex\package.json
  npm ERR! code EPERM
  npm ERR! errno -4048
  npm ERR! syscall unlink
  npm ERR! Error: EPERM: operation not permitted, unlink 'C:\Users\Martin\Desktop\JS\React\Mi-config\node_modules\fsevents\node_modules\ansi-regex\package.json'
  npm ERR!     at Error (native)
  npm ERR!  { Error: EPERM: operation not permitted, unlink 'C:\Users\Martin\Desktop\JS\React\Mi-config\node_modules\fsevents\node_modules\ansi-regex\package.json'
  npm ERR!     at Error (native)
  npm ERR!   stack: 'Error: EPERM: operation not permitted, unlink \'C:\\Users\\Martin\\Desktop\\JS\\React\\Mi-config\\node_modules\\fsevents\\node_modules\\ansi-regex\
  \package.json\'\n    at Error (native)',
  npm ERR!   errno: -4048,
  npm ERR!   code: 'EPERM',
  npm ERR!   syscall: 'unlink',
  npm ERR!   path: 'C:\\Users\\Martin\\Desktop\\JS\\React\\Mi-config\\node_modules\\fsevents\\node_modules\\ansi-regex\\package.json' }
  npm ERR!
  npm ERR! Please try running this command again as root/Administrator.
  
  npm ERR! A complete log of this run can be found in:
  npm ERR!     C:\Users\Martin\AppData\Roaming\npm-cache\_logs\2017-09-11T13_53_27_111Z-debug.log
  </code></pre>
  
  <p>It doesn't get added to package.json either </p>
  
  <p>Can anyone help me please? I've reinstalled latest stable node version but still doesn't work.</p>