provideEnvironmentInitializer

This function is used to provide initialization functions that will be executed upon construction of an environment injector.

Note that the provided initializer is run in the injection context.

Previously, this was achieved using the ENVIRONMENT_INITIALIZER token which is now deprecated.

The following example illustrates how to configure an initialization function using provideEnvironmentInitializer()

          
createEnvironmentInjector(  [    provideEnvironmentInitializer(() => {      console.log('environment initialized');    }),  ],  parentInjector);