NgxMonacoEditorConfig Not working in angular production build

I have the MonacoConfig in an extra file:

import { MonacoEditorModule, NgxMonacoEditorConfig } from 'ngx-monaco-editor';

const monacoConfig: NgxMonacoEditorConfig = {
  defaultOptions: {scrollBeyondLastLine: false},
  onMonacoLoad: () => {
    // Register a new language
    let monaco = (<any>window).monaco
    [...]

}
};
export default monacoConfig;

And I import it into app.module:

import monacoConfig from './editor/monaco-lang'
import { MonacoEditorModule, NgxMonacoEditorConfig } from 'ngx-monaco-editor';
...
imports: [
 MonacoEditorModule.forRoot(monacoConfig),
]

While serving and building everything acts normal, but when I build it as production the editor does not load and I am getting this error:

ERROR TypeError: Cannot read property 'defaultOptions' of null
    at e.set [as options] (main.d3395c8….bundle.js:1)
    at $r (main.d3395c8….bundle.js:1)
    at main.d3395c8….bundle.js:1
    at main.d3395c8….bundle.js:1
    at bi (main.d3395c8….bundle.js:1)
    at ro (main.d3395c8….bundle.js:1)
    at main.d3395c8….bundle.js:1
    at Object.updateDirectives (main.d3395c8….bundle.js:1)
    at Object.eo [as updateDirectives] (main.d3395c8….bundle.js:1)
    at _i (main.d3395c8….bundle.js:1)

Is my config wrong or is this a common issue?

1. If I build it without --prod it works in the browser, but not in my electron app. I get this error:

ERROR Error: Uncaught (in promise): TypeError: window.require.config is not a function
TypeError: window.require.config is not a function
    at onGotAmdLoader (base-editor.js:50)
    at base-editor.js:68
    at new ZoneAwarePromise (zone-mix.js:891)
    at EditorComponent.webpackJsonp../node_modules/ngx-monaco-editor/base-editor.js.BaseEditor.ngAfterViewInit (base-editor.js:42)
    at callProviderLifecycles (core.js:12706)

Is something wrong with the way I import my config?