title: ionic 2 - watch fail
body: <p>I'm using ionic 2 framework on ubuntu with node v6.9.4 and npm 3.10.10, and after the last upgrade i've gotting the error when i run "ionic serve":</p>
  
  <pre>
  
      [11:46:06]  ionic-app-scripts 1.0.0 
      [11:46:06]  watch started ... 
      [11:46:06]  build dev started ... 
      [11:46:06]  clean started ... 
      [11:46:06]  clean finished in 59 ms 
      [11:46:06]  copy started ... 
      [11:46:06]  transpile started ... 
      [11:46:57]  transpile finished in 50.84 s 
      [11:46:57]  webpack started ... 
      [11:47:33]  copy finished in 87.03 s 
      [11:48:16]  webpack finished in 78.91 s 
      [11:48:16]  sass started ... 
      [11:48:27]  sass finished in 11.71 s 
      [11:48:27]  build dev finished in 141.78 s 
      [11:48:30]  watch failed: A watch configured to watch the following paths failed to start. It likely that a file 
                  referenced does not exist: /home/te/PhpstormProjects/smarTrip-ionic/src/assets/**/*, 
                  /home/te/PhpstormProjects/smarTrip-ionic/src/index.html, 
                  /home/te/PhpstormProjects/smarTrip-ionic/src/manifest.json, 
                  /home/te/PhpstormProjects/smarTrip-ionic/src/service-worker.js, 
                  /home/te/PhpstormProjects/smarTrip-ionic/node_modules/ionicons/dist/fonts/**/*, 
                  /home/te/PhpstormProjects/smarTrip-ionic/node_modules/ionic-angular/fonts/**/*, 
                  /home/te/PhpstormProjects/smarTrip-ionic/node_modules/ionic-angular/polyfills/polyfills.js, 
                  /home/te/PhpstormProjects/smarTrip-ionic/node_modules/sw-toolbox/sw-toolbox.js 
      [11:48:30]  ionic-app-script task: "watch" 
      [11:48:30]  Error: A watch configured to watch the following paths failed to start. It likely that a file referenced 
                  does not exist: /home/te/PhpstormProjects/smarTrip-ionic/src/assets/**/*, 
                  /home/te/PhpstormProjects/smarTrip-ionic/src/index.html, 
                  /home/te/PhpstormProjects/smarTrip-ionic/src/manifest.json, 
                  /home/te/PhpstormProjects/smarTrip-ionic/src/service-worker.js, 
                  /home/te/PhpstormProjects/smarTrip-ionic/node_modules/ionicons/dist/fonts/**/*, 
                  /home/te/PhpstormProjects/smarTrip-ionic/node_modules/ionic-angular/fonts/**/*, 
                  /home/te/PhpstormProjects/smarTrip-ionic/node_modules/ionic-angular/polyfills/polyfills.js, 
                  /home/te/PhpstormProjects/smarTrip-ionic/node_modules/sw-toolbox/sw-toolbox.js 
  
      npm ERR! Linux 4.4.0-21-generic
      npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "watch"
      npm ERR! node v6.9.4
      npm ERR! npm  v3.10.10
      npm ERR! code ELIFECYCLE
      npm ERR! SmartTrip@ watch: `ionic-app-scripts watch`
      npm ERR! Exit status 1
      npm ERR! 
      npm ERR! Failed at the SmartTrip@ watch script 'ionic-app-scripts watch'.
      npm ERR! Make sure you have the latest version of node.js and npm installed.
      npm ERR! If you do, this is most likely a problem with the SmartTrip package,
      npm ERR! not with npm itself.
      npm ERR! Tell the author that this fails on your system:
      npm ERR!     ionic-app-scripts watch
      npm ERR! You can get information on how to open an issue for this project with:
      npm ERR!     npm bugs SmartTrip
      npm ERR! Or if that isn't available, you can get their info via:
      npm ERR!     npm owner ls SmartTrip
      npm ERR! There is likely additional logging output above.
  
      npm ERR! Please include the following file with any support request:
      npm ERR!     /home/te/PhpstormProjects/smarTrip-ionic/npm-debug.log
      node--v(node:4154) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): Error: channel closed
  
  </pre>
  
  <p>I already tried to remove the folder node_modules and run npm install again, force the npm cache clean, install the latest version of node.js, but didnt success...</p>
  
  <p>Can anyone please help me?
  Tks!</p>