My personnal way of testing the Angular app loading spinner

In main.ts Replace the block :

platformBrowserDynamic().bootstrapModule(AppModule)
  .catch(err => console.error(err));

by :

(
  async () => { 
    await new Promise( resolve => setTimeout(resolve, 1000) );
      platformBrowserDynamic().bootstrapModule(AppModule)
        .catch(err => console.error(err));
  }
)();

For temporary test/demo only, don't commit this code !