Add an answer to Angular Q55

[masoudk1990]

Q55. What is the purpose of the preloadingStrategy property configuration in this router code?

RouterModule.forRoot (
	...
	{
	preloadingStrategy: PreloadAllModules
	}
)

• [ ] It enables the option to flag individual routes for preloading.
• [ ] It preloads all dependencies for routes, creating instances of services when the app first starts up
• [ ] It ensures all modules get built into a single app module bundle file.
• [ ] It configures the router to immediately load all routes that have a loadChildren property (routes that are typically loaded when requested)

---

How angular.io official documentation described PreloadAllModules: Provides a preloading strategy that preloads all modules as quickly as possible.

How PreloadAllModules explained in this document: Angular provides built-in PreloadAllModules strategy that loads all feature modules as quickly as possible configured with loadChildren in application routing module.

Therefore I have a doubt which option is the answer.

[nateonmission]

Hey,

I've look over all these articles. I believe the answer is D "It configures the router to immediately load all routes that have a loadChildren property (routes that are typically loaded when requested)"

Because, The default behavior is Load on Demand (as stated in the parenthetical on the response); It does, in fact, load all the routes that have configured with the loadChildren statement; It do not find anything indicating that instances of services are automatically created.

• https://angular.io/api/router/PreloadAllModules
• https://www.tektutorialshub.com/angular/angular-preloading-strategy/
• https://web.dev/route-preloading-in-angular/
• https://www.concretepage.com/angular-2/angular-custom-preloading-strategy#Preloading
• https://www.johnpapa.net/preload-all-angular-bundles/
• https://medium.com/geekculture/preloading-strategy-in-angularsave-loading-time-ca791074fe28

PS: I sent a PR. Please let me know if I need to change how I did anything. Peace!