IONIC 2 - Runtime error. Cannot find module "ionic"

The problem might be due to ionic package update. Delete the node_modules folder.

Ionic packs changed from Ionic 2.x to 3.x. You need to make the following changes.

1. Remove link to ionic-native
   
   from package.json
   
   .
   
   
2. Install custom ionic 3.x packages using the following commands

npm install @ ionic-native / core --save

npm install @ ionic-native / splash screen --save

npm install @ ionic-native / @ ionic-native / status bar --save

3. Change the links to the native ionic 2.x package from app.module.ts

.

import {SplashScreen} from '@ ionic-native / splash-screen';

import {StatusBar} from '@ ionic-native / status-bar';

4. Add StatusBar
   
   also SplashScreen
   
   to the array of providersapp.module.ts
   
   
   

5. Update imports in StatusBar
   
   and SplashScreen
   
   in app.component.ts
   
   (same as step # 3)

6. Add the following to the constructor app.component.ts
   
   

statusBar: StatusBar, splash screen: splash screen

7. If you are using a service http

, import it app.module.ts

as app.module.ts

below:

import {HttpModule} from '@ angular / http';

Add HttpModule

to array HttpModule

.

Note. You may need to do the same for other similar packages.