angular2react method can be simplified about angular2react HOT 3 OPEN

import { angular2react } from 'angular2react';
import { module, auto, ILocationProvider } from 'angular';
import { useMemo } from 'react';
import { AngularComponent } from './components';
import { AngularService } from './services';

export const root = module('root', ['']);
let $injector: auto.IInjectorService;

export const useAngularComponent = <Props extends {}>(component: AngularComponent) => {
    if (!$injector) {
        throw new Error('Missing injector, you might have run this before angular was bootstrapped');
    }

    return useMemo(() => angular2react<Props>(component.selector, component, $injector), []);
};

export const registerAngularComponents = (components: AngularComponent[]) => {
    for (const component of components) {
        root.component(component.selector, component);
    }
};

export const registerAngularServices = (services: AngularService[]) => {
    for (const service of services) {
        root.service(service.name, service.injectable);
    }
};

export const registerAngularConstants = (constants: AngularService[]) => {
    for (const constant of constants) {
        root.constant(constant.name, constant.injectable);
    }
};

export const registerAngularRoutes = (routes: Function[]) => {
    root.config(($locationProvider: ILocationProvider) => {
        $locationProvider.html5Mode({ enabled: true, requireBase: false });
    });

    for (const route of routes) {
        root.config(route);
    }
};

export const setInjector = (_$injector: auto.IInjectorService) => {
    $injector = _$injector;
};

import { bootstrap, auto } from 'angular';
import {
    root,
    setInjector,
    registerAngularComponents,
    registerAngularServices,
    registerAngularConstants,
    registerAngularRoutes,
} from './helpers';
import constants from './constants';
import routes from './routes';
import components from './components';
import services from './services';

const bootstrapAngular = (callback: () => void) => {
    registerAngularConstants(constants);
    registerAngularRoutes(routes);
    registerAngularComponents(components);
    registerAngularServices(services);

    root.run([
        '$injector',
        (_$injector: auto.IInjectorService) => {
            setInjector(_$injector);
            callback();
        },
    ]);

    bootstrap(document.createElement('div'), [root.name]);
};

export default bootstrapAngular;

import React from 'react';
import { render } from 'react-dom';
import './index.css';
import App from './App';
import bootstrapAngular from './-angular';
import * as serviceWorker from './serviceWorker';
import { makeServer } from './tests/Mocks/Server';

if (process.env.NODE_ENV === 'development') {
    console.log('calling makeServer');
    makeServer();
}

const bootstrapReact = () => {
    render(<App />, document.getElementById('app'));
};

bootstrapAngular(bootstrapReact);

// If you want your app to work offline and load faster, you can change
// unregister() to register() below. Note this comes with some pitfalls.
// Learn more about service workers: https://bit.ly/CRA-PWA
serviceWorker.unregister();