can't build with Ionic2 - ionic-framework

Question

I'm developing an Ionic2 application and now I want to make a build but I get an error.
ionic info returns this:
Cordova CLI: 6.3.1
Ionic Framework Version: 2.0.0-rc.1
Ionic CLI Version: 2.1.1
Ionic App Lib Version: 2.1.1
Ionic App Scripts Version: 0.0.36
OS: Distributor ID: Ubuntu Description: Ubuntu 16.04.1 LTS
Node Version: v4.2.6
my main.prod.ts looks like this:
import { platformBrowser } from '#angular/platform-browser';
import { enableProdMode } from '#angular/core';
import { AppModuleNgFactory } from './app.module.ngfactory';
enableProdMode();
platformBrowser().bootstrapModuleFactory(AppModuleNgFactory);
Everytime I try to do ionic build android I get this:
bundle failed: Could not resolve './app.module.ngfactory' from /home/xxx/Desktop/myApp/.tmp/app/main.prod.ts
ionic-app-script task: "build"

Answer 1

Ionic2 uses the Ahead-Of-Time-Compilation of Angular2 (by using ngc). What ngc does, is creating a factory out of your normal app-module and renames this module by adding NgFactory to the modules' Name.
So for example if you have an app-module called MySuperAwesomeApp, ngc creates a file which exports a factory called MySuperAwesomeAppNgFactory. And when building your Android app, ionic will search for MySuperAwesomeAppNgFactory instead of MySuperAwesomeApp, thus throwing an error, when not finding it.
In your case I suppose that you renamed your app-module (located in ./app.module.ts) but didn't change the factory name in the main.prod.ts.
For further reading on AOT, please refer to the Angular2 AOT Doc.