Ionic 3 - network-information plugin - Object(…) is not a function(…)

Question

I need to implement network information plugin in an ionic 3 angular 4 project. I have installed a network plugin using

$ ionic cordova plugin add cordova-plugin         


        

Answer 1

Since the release of Ionic 4, Installing Ionic Native for Ionic 3 requires you to add @4 to get the latest compatible version. In this case, and all others involving Ionic 3, you should do it like this

npm install @ionic-native/network@4

for network,

npm install --save @ionic-native/barcode-scanner@4 

for Barcode Scanner,

npm install --save @ionic-native/network@4, 
npm install --save @ionic-native/bluetooth-le@4 

for BluetoothLE.

Answer 2

The problem is that you are using the /ngx import which is for Ionic version 4. If you go read the changelog you will see that version 5 and up Requires Angular 7.1 and TypeScript 3.1.

Try to downgrade plugin to 4.20.0 like this :

npm uninstall @ionic-native/network

then npm install @ionic-native/network@4.20.0

And remove ngx in import like this : import { Network } from '@ionic-native/network';