What are tree shakeable providers?

When we register providers in @NgModule(), angular internally includes all those related classes in the final bundle, irrespective of their actual use in the application. To overcome this, it is recommended to use @Injectable() decorator when creating a service as below:

  providedIn: 'root'
export class MyShakeableService {
  // some logic

This enables the Angular to inspect which services are actually being used in the application and 'exclude' unused service classes from the final bundle - there by reducing the bundle size. These kind of providers are called as 'tree shakeable'. This was introduced in Angular 6.

Angular •  Added 3 months ago

What are the different lifecycle hooks available to Components in Angular?

The below are the lifecycle hooks available in Angular. These are added by implementing the respective interface on the component. 1. ngOnChange - ...

What are the different types of Subjects available in Angular?

* A subject is a special type of Observable which shares a single execution path among the observers which results in a multicast (one to many). * Th ...

How to create Routing in Angular?

1. Import and add RouterModule to the modules in NgModule 2. Declare a routes array which contains all the routes and their endpoints and then pass t ...

How can you create a transient service in Angular?

* When you register a service into DI in Angular, the services are marked Singleton. * Alternatively to create a transient service (a new instance o ...

What is the difference between parseInt() and number()?

parseInt() and Number() are both used to convert a string into a number. * parseInt() parses the value of the string and converts to number till th ...

We use cookies to provide you with a great user experience, analyze traffic and serve targeted promotions.   Learn More   Accept