Inject Http manually in Angular 4

Question

I want to manually bootstrap an Angular 4 app (created with CLI). In main.ts I am doing this:

const injector = ReflectiveInjector.resolveAndCrea         


        

Answer 1

As another approach you can use the native browser fetch api. So you do not have to deal with angular http, etc

That is how I am doing that:

fetch(configUrl, { method: 'get' })
.then((response) => {
  response.json()
    .then((data: any) => {
      if (environment.production) {
        enableProdMode();
      };
      platformBrowserDynamic([{ provide: AppSettings, useValue: new AppSettings(data.config) }]).bootstrapModule(AppModule);
    });
});

But bare in mind that fetch didn't get much love in old browsers so you need to polyfil that with whatwg-fetch like npm install whatwg-fetch --save then import 'whatwg-fetch' in polyfills.ts in order if you want to support old browsers.

UPDATE: Yeah you can use XMLHttpRequest but you are getting same browsers support with that as fetch just a modern replacement for XMLHttpRequest.