1. TypeScript 5.2

Angular 17 includes an built-in TypeScript version, TypeScript 5.2. In this version, there are many enhancements made to TypeScript. These include improvements to the TypeScript language, such as security, code readability and a better overall experience for developers. TypeScript 5.2 offers a variety of Angular 17 like-

MetaData with Decorator Programming: Decorator programming allows you to add the metadata, classes or actions for more organized and reused code. When metadata is added using decorators, it allows you extend the capabilities and customize using Angular 17. You can also integrate it using other tools, like TypeScript compiler extensions or Angular components to increase the efficiency.

Module Augmentation: This update lets you add modules to existing ones with new members. This means that you can modify the code without altering the code in the first place. Module augmentations are made to expand JavaScript objects, such as arrays or custom methods. It can help you create and maintain code that is more efficiently according to your requirements.

The Angular 17 using TypeScript 5.2 allows the union of arrays, type inference as well as type aliases. Additionally, this latest enhancement has improved type-checking capabilities for literals of template arrays, and also allows decorator programming.

2. New Declarative Control Flow

This feature has generated quite a buzz due to its improvements. Angular 17 has introduced a fresh built-in syntax for controlling flow. It also allows developers create and maintain complicated conditional logic. The primary goal for this new feature is the flow of control inside Angular templates.

This new control flow for declarative statements is built around “if” and “else” keywords. Additionally, @syntax is more specific than the earlier directive-based syntax. Furthermore this control flow is responsible for the display of DOM elements and crucial information to templates when using JavaScript code.

In simple terms in simple words, the brand new control flow will manage and write code with ease. This means that the control flow is able to strike away from the markup that is rendered which reduces the need for structural directives, and removing unnecessary complications.

3. Deferrable Loading

Angular 17 introduces a new feature called deferrable loading to improve the performance of your Angular. This is a method that enables web pages to load resources at any time they are needed. This means that it is loaded whenever a user navigates between scrolls or pages or gets to a specific place on the page, reducing the bandwidth and time to load.

Simply put it, deferrable loading could delay the loading of resources or code until it is required. Furthermore, it can increase the performance of apps with many elements or modules by stopping that the web browser loads all the code at the same time.

Angular 17 has @defer control block that will allow developers to load content in a lazy fashion in the block. It will also introduce dependencies within Angular which means that directives, different content and even other modules are able to be loaded in a lazy manner.

In relation to deferrable, Angular 17 has also launched deferrable view. They allow you to delay the rendering of views until they’re able to be used. It also allows templates to load dependencies that are lazy to set up trigger conditions.

“Deferrable views are a powerful tool, and they can be used to reduce the initial bundle size of your application or even defer some of the heavy components that you might have in your page but are not immediately loaded or shouldn’t be immediately loaded,” said Simona Cotin, engineer manager of Google’s Angular team.

4. Support for View Transition API

View Transition API View Transition API in Angular 17 allows animate transitions between views within your application with ease. With the support for view transitions API, which is the most recent version, you can create more interactive and engaging user interfaces, which will result in a better user experience.

To top it off to that, you can create smoothing effects and intuitive ones with some code to create engaging animations for your web-based applications. It’s possible to add it within a couple of minutes by using just a few code lines and in a matter of minutes, you’ll have an interactive app.

Also, with Angular’s router, you can activate and deactivate the elements by utilizing the “document.startViewTransition” callback. In turn, it guarantees smooth transitions when moving through different pages while maintaining the same navigation experience.

To use view transitions API with the router, all you need to do is add “withViewTransitions” to the “provideRouter” in your ApplicationConfig:

5. Improved Server-Side Rendering

Alongside other exciting Angular 17 features, this version will help improve the performance of your application by enhancing server-side rendering. In the new version it has accelerated the creation and deployment of applications that render by the server side more easily. This can improve the search engine optimization and performance for an Angular application.

In Angular 17, there are several points that the Angular team has ensured while improving SSR in the latest version, including:

View Transitions Support:In this way, you can use animations to switch between different perspectives on servers.

Lazy Loading Support:Angular 17 improves the support it provides for lazy loading into SSR and indicates that managing modules becomes more straightforward in larger applications.

Type Checking: With SSR in Angular 17, you can prevent errors and ensure your application is more reliable and flexible.

The rendering by the side server in Angular 17 significantly enhances the time to load the initial page. consequently that you don’t need the browser to render HTML and save time and energy. Thus it rendered your web page with speed and efficiency, and also sent the pre-rendered HTML.

Additional Information: This was the most-requested update by those in the Angular developers. This is why making server-side rendering better was the most important thing of this team. Angular team.

6. Router refactoring

Another important improvement to Angular is the restructuring of routing. With Angular 17 the improvement of router refactoring translates into more user-friendly and flexible Angular routing.

It assists in simplifying the configuration of routers as well as templates. This helps to make routing more efficient and removes the need for unnecessary routes.

The syntax of RouterLink is set in Angular 17, the router configuration syntax is defined by the RouterLink directive, which allows you to set up routes in your templates. Additionally, you can apply the same syntax as you have applied to a different route.

Furthermore to that, you can utilize RouterModule.forRoot as well as proivderRouter to set up routes to be examined in lieu of the setupTestingRouter. The new version also comes with Angular 17 features like route reuse, which allows you to reuse components to improve the performance of your application.

7. Upgrade to Node js 18.13.0

The final aspect of the new features in Angular Version 17 is the upgrading of Node js 18. Angular advised that you should update up to Node js.18 13.0 since previous versions are incompatible with running an Angular application.

An additional reason why you should upgrade your system is because it’s an Long Term Support (LTS) version which offers at least 2 years’ support for perform in Angular-based applications.

Angular 17

Angular 17 is not just packed with the latest features as well as updates, it additionally, it comes with supported tools and resources to aid in the development of the functionality of your Angular application.

Support for custom element bindings: Angular 17 provides the built-in capability to support custom bindings to elements, permitting your developer to tie elements and even events. It allows an easy integration of your custom element into your Angular application.

Support for custom element providers: With the help of custom element provider, you can add dependency to customized components to facilitate the interaction for custom element providers and components that use Angular.

Support for custom element providers: With the help of custom element providers you can build dependency into custom components to ensure smooth interaction for custom element providers and component with Angular.

Improved support for internationalization:This support signifies expansion and tailoring your Angular application to a global audience. It includes translating the application’s text into multilingual, new date and time format to match the requirements.

Improved support for accessibility:Angular 17 has enhanced its accessibility features by enhancing compatibility with keyboard navigation, screen readers support as well as seamless integration with customisation. It makes it easier to use and makes your app more accessible.