Angular CLI (latest)

This is project reproduces this issue: storybookjs/storybook#22674

Testing in Storybook

These steps demonstrate APP_INITIALIZER not running in Storybook.

1. Install and start Storybook: yarn && yarn storybook
2. Open Storybook in a browser.
3. Open console in web developer tools.
4. Note that Hello from useFactory is not logged.

Testing outside Storybook

These steps demonstrate APP_INITIALIZER running as expected outside Storybook.

1. Install Angular CLI (version 16 or later)
2. Create a new app: ng new --standalone
3. Update app.config.ts as shown below.
4. Open the application in a browser.
5. Open console in web developoer tools.
6. Note that Hello from useFactory is logged.

// app.config.ts
import { APP_INITIALIZER, ApplicationConfig } from '@angular/core';

export const appConfig: ApplicationConfig = {
  providers: [
    {
      provide: APP_INITIALIZER,
      useFactory: () => () => {
        console.log('Hello from useFactory');
      },
      multi: true,
    },
  ],
};