ERROR TypeError: Object(...) is not a function
    at ScreenOrientation.get [as type] (index.js:45)
    at JuegoPage.webpackJsonp.447.JuegoPage.ionViewDidLoad (juego.ts:14)
    at ViewController._lifecycle (view-controller.js:486)
    at ViewController._didLoad (view-controller.js:369)
    at NavControllerBase._didLoad (nav-controller-base.js:768)
    at t.invoke (polyfills.js:3)
    at Object.onInvoke (core.js:4760)
    at t.invoke (polyfills.js:3)
    at r.run (polyfills.js:3)
    at NgZone.run (core.js:4577)

ionic cordova plugin add cordova-plugin-screen-orientation
npm install @ionic-native/screen-orientation

import { ScreenOrientation } from '@ionic-native/screen-orientation/ngx';

ScreenOrientation

import { ScreenOrientation } from '@ionic-native/screen-orientation/ngx';
...
constructor(private screenOrientation: ScreenOrientation, bla bla
...
ionViewDidLoad() {
    console.log(this.screenOrientation.type);
  }