Unveiling Angular 16: A Paradigm Shift in Front-End Development

Angular v16 has arrived, bringing with it a host of new features and enhancements that will excite developers and tech enthusiasts alike.

Angular is a popular open-source framework for building web applications, and version 16 signifies a major update or release in the framework’s development. It promises to unlock the framework’s full potential, empowering developers to create impressive web applications that leave a lasting impact.

Here, you’ll discover the key improvements and optimizations that make Angular v16 a must-have for web application development.

Key Takeaways

  • Angular v16 includes several performance improvements, such as faster compilation times, faster startup times, and improved change detection.
  • Angular v16 includes improvements to the Angular CLI, such as faster builds, improved error messages, and better support for web workers.
  • Angular v16 includes updated and improved documentation, making it easier for developers to get started with Angular and find the information they need.
  • Angular v16 includes improved compatibility with TypeScript 4.4 and higher, as well as other dependencies such as Node.js.
  • Angular v16 also includes some new features, such as support for custom element tags and improved support for internationalization (i18n).

What is Angular?

Angular is a popular open-source web development framework created by Google. It is used for building dynamic, single-page applications (SPAs) and is based on the Model-View-Controller (MVC) architectural pattern.

Angular provides a comprehensive set of tools and features that simplify the development process and enhance the overall efficiency of web applications. It utilizes HTML as a template language and extends it with additional syntax and directives to create interactive user interfaces.

Key features of Angular include data binding, which allows for automatic synchronization between the model and the view; dependency injection, which facilitates efficient management of components and their dependencies; and routing, which enables navigation between different views and sections of an application.

Drive Business Growth With AngularJS Development Company

Hire AngularJS developers from the best Angular development company who has expertise in building robust single-page applications for your business.

Contact Us

New Upgrades of Angular 16

It’s time to highlight the essential features of Angular 16.

  1. Brand New Reactivity Model For Angular

    We are excited to announce that with the Angular version 16 release, a developer preview of an innovative reactivity model for Angular is a hot topic. This model brings significant improvements to performance and the overall experience for Angular developers.

    The new model is fully backward compatible and interoperable with the current system. It offers the following benefits:

    • By minimizing the number of computations during change detection, you’ll find significantly enhanced runtime performance. As we progress with the implementation of Angular Signals, the developers working with Angular development company will experience a notable enhancement in the INP Core Web Vital metric for applications developed with signals.
    • Angular 16 comes up with a simpler mental model for reactivity, clarifying the dependencies of the view and the flow of data throughout the Angular web application development.
    • Fine-grained reactivity (fine-grained code loading) is the new feature of Angular 16 that enables precise reactivity, enabling upcoming releases to detect changes exclusively in the relevant standalone components.
    • Makes Zone.js optional in upcoming releases by utilizing signals to notify the framework when the model has changed.
    • Provides computed properties without the need for recomputation in every change detection cycle.
    • To improve interoperability with RxJS, we have devised a plan to introduce reactive inputs, thereby enhancing the compatibility between Angular and RxJS.

    In v16, you’ll find a new signals library as part of @angular/core, along with an RxJS interop package called @angular/core/rxjs-interop.. The complete integration of signals into the framework is planned for later this year.

  2. Introducing Angular Signals

    Signals, which draw inspiration from Solid.js, introduce a fresh approach to managing state modifications within Angular standalone apps. In this paradigm, signals take the form of functions that can be modified by invoking them with a new value (set()), while also returning a value (get()).

    In addition, Angular signals library can establish dependencies on each other, forming a dynamic value graph that automatically updates whenever a dependency undergoes a change.

    The Angular Signals package enables developers to define reactive primitive values and establish communication dependencies between them. As part of Angular 16, developers will have the convenience of easily converting signals to observables using the @angular/core/rxjs-interop. This feature is currently available in the developer preview.

    Angular v16 continues to support RxJS observables, which can be combined with signals to create powerful and flexible data flows, allowing for the construction of resilient and expressive systems.

    Here’s a simple example how to use it with Angular 16:

      selector: 'my-app',
      standalone: true,
      template: `
        {{ fullName() }} 
    export class App {
      firstName = signal('Mr Angular’);
      lastName = signal('Dev');
      fullName = computed(() => `${this.firstName()} ${this.lastName()}`);
      constructor() {
        effect(() => console.log('Name changed:', this.fullName()));
      setName(newName: string) {

    The code segment presented generates a computed value called “fullName” that relies on the signals “firstName” and “lastName”. Additionally, we define an effect that triggers a callback each time any of the signals it utilizes are altered. In this scenario, the “fullName” signal is indirectly dependent on “firstName” and “lastName”.

    If we modify the value of “firstName” to “David”, the console in the browser will display a log.
    “Name changed: Mr Angular David”

  3. Improved Server-Side Rendering with Enhanced Speed

    The Angular team has identified server-side rendering as the primary area for enhancing Angular.

    With the introduction of the new app non-destructive hydration technique called “whole app non-destructive or partial hydration,” the application no longer requires a complete re-rendering by Angular.

    Rather than starting from scratch, the Angular framework leverages existing DOM nodes for building internal data structures and binds event listeners to those nodes.

    Angular developers can take advantage of various benefits, including:

    • Elimination of content flickering on web pages, resulting in a smoother user experience.
    • Enhanced Web Core Vitals, improving metrics related to page load speed and user interaction.
    • Future-proof architecture that employs primitives, enabling precise code loading. This capability is currently evident in progressive lazy route hydration.
    • Simple integration with existing apps requiring only a few lines of code.
    • Gradual adoption of hydration for components that perform manual DOM manipulation through the use of the ngSkipHydration property in templates.
    • Angular has observed up to a 45% improvement in Largest Contentful Paint (LCP) with full standalone app hydration.

    Several applications have already implemented hydration in their production environments and have reported improvements in Core Web Vitals (CWV).

    To begin, a few additional lines need to be added to your main.ts file in order to get started.

    import {
    } from '@angular/platform-browser';
    bootstrapApplication(RootCmp, {
    providers: [provideClientHydration()]

    Another notable enhancement in Angular 16 is the inclusion of non-destructive hydration support, which enhances the speed and smoothness of server-side rendering (SSR).

    This technique allows you to add server-side rendering of your application on the server and transmitting the HTML content to the browser. Subsequently, JavaScript behavior and event listeners are attached to transform the page into a fully interactive and functional web page.

    Angular 16 introduces a built-in feature called Server Side Rendering (SSR), which significantly enhances the performance and quality of SSR applications.

    This feature provides several advantages, such as improved SEO, accessibility, and reduced time-to-interactive (TTI). While SSR has been a long-standing feature in frameworks like React or Next.js, implementing it in Angular posed its own set of challenges.

    During the hydration process, the browser employs a non-destructive technique that ensures existing HTML content and attributes remain untouched and unaffected.

    This means that any modifications or optimizations made to the HTML content on the server side are preserved.

    Moreover, non-destructive hydration serves as a safeguard against potential conflicts or errors arising from inconsistencies between the HTML content on the client and server sides.

  4. In Angular 16, the elimination of ngcc is observed

    Angular made a significant change in version 9 by transitioning from its previous view engine to Ivy. To facilitate the support of libraries that still relied on the older view engine, the Angular Compatibility Compiler (ngcc) was introduced.

    However, starting from version 16, ngcc has been removed, along with all other view engine-related code. Consequently, Angular View Engine libraries cannot be used in v16 and beyond, and the Angular bundle size should be reduced.

    Although this represents a compatibility break, it is important to note that these libraries were not officially supported.
    Required Inputs
    Prior to Angular 16, it was not feasible to designate inputs as mandatory, which was a highly anticipated feature. However, a widely used workaround involved employing a component selector.

     selector: 'app-test-component[title]', // note attribute selector here
     template: '{{ title }}',
    export class TestComponent {
     title!: string;

    Regrettably, this approach falls short of being optimal. Firstly, it leads to cluttering of the component selector. Each required input name must be included in the selector, which poses difficulties, particularly during refactoring processes.

    Furthermore, it disrupts the functionality of auto-import mechanisms in Integrated Development Environments (IDEs). Secondly, if we overlook providing a value for an input labeled in this manner, the resulting error message lacks precision, as there is no exact match for such an “incomplete” selector.

    Error Message in Angular-16

    The newly introduced feature addresses this issue by enabling us to explicitly indicate that an input is required, either through the @Input decorator.

    @Input({required: true})
    title!: string;
    or the @Component decorator inputs array:
     inputs: [
       {name: 'title', required: true}

    Nevertheless, the new solution possesses two significant limitations. Firstly, it solely functions in Ahead-of-Time (AOT) compilation and does not apply to Just-in-Time (JIT) compilation.

    Secondly, it remains affected by the strictPropertyInitialization TypeScript compilation flag, which is typically enabled by default in Angular (as it is recommended and beneficial).

    TypeScript will generate an error for this property since it is declared as non-nullable but lacks initialization in the constructor or inline declaration.

    error message in new angular version 16

    Hence, it is necessary to disable this check in order to proceed. One way to achieve this is by explicitly indicating the non-nullability of the property using the non-null assertion operator, even though it must be provided in the consumer template.

  5. Esbuild Dev Server

    Ng build and ng serve in Angular version 16 now have experimental support for esbuild. While still in the experimental phase, this feature offers faster startup times (at least twice as fast) compared to the webpack implementation. However, it requires further improvements and optimizations for better performance.

    For development server purposes, Angular now utilizes Vite in ng serve. Additionally, both development and production builds are powered by esbuild.

    To experience the benefits of Vite + esbuild, you can update your angular.json configuration.

    "architect": {
    "build": { /* Add the esbuild suffix/*
    "builder": "@angular-devkit/build-angular:browser-esbuild",

    To enable the use of “@angular-devkit/build-angular:browser-esbuild” instead of “@angular-devkit/build-angular:browser”, you should make this change here.

  6. Binding router Information to Component Inputs

    With this capability, the routing data mentioned below will be easily accessible in the dynamic component as input. As a result, we can utilize inputs to retrieve these values instead of relying on ActivatedRoute. This approach can significantly benefit our application by eliminating a significant amount of redundant code.

    Related Post: Resolver in Angular
    • Router data
    • Resolved router data
    • params
    • query Params
    // The current approach, which remains functional.
    class SomeComponent {
    route = inject(ActivatedRoute);
    data = this.route.snapshot.data['dataKey'];
    params = this.route.snapshot.params['paramKey']
    //New approach
    class SomeComponent {
    @Input() dataKey: string;
    @Input() paramKey: string;
    @Input() set dataKey(value: string){
    //react to the value
    @Input() set paramKey(value: string){
    //react to the value
  7. takeUntilDestroyed and DestroyRef

    Gradually, Angular is facilitating a more functional coding style. One step in this direction is the inclusion of the DestoryRef and takeUntilDestroyed RxJS operators. These operators serve as replacements for the ngOnDestroy component’s lifecycle hook. Previously, if we desired to use ngOnDestroy within functions, it was not possible since it relied on classes.

    class SomeComponent {
    destroyRef = inject(DestroyRef);
    store = inject(Store);
    constructor() {
    const sub = this.store.select(getUser()).subscribe((user) => {
    this.user = user
    destoryRef.onDestroy(() => {
    const sub = this.store.select(getUser()).pipe(takeUntilDestroyed())
    .subscribe((user) => {
    this.user = user

    The usage of the takeUntilDestroyed operator is restricted to the constructor context exclusively. If we intend to utilize it outside of the constructor, we need to provide destroyRef as an argument.

    In contrast to subscriptions in RxJS, this functionality is internally utilized to handle the cleanup of signal impacts. Consequently, no manual cleanup is required.

Additional features of Angular 16

  • The introduction of standalone schematics in the developer preview allows for the creation of new Angular projects as standalone entities, providing a streamlined process.
  • The Jest testing framework is being experimentally supported, indicating ongoing development and exploration of its capabilities.
  • Developers working with Angular have the ability to specify a nonce attribute for component inline styles, which Angular then includes inlined.
  • In Angular templates, self-closing tags can be utilized to create closing tags for all the affected components, resulting in a more concise syntax.
  • Angular 16 brings an enhancement to the application performance and developer experience by introducing the option to link or bind route parameters with corresponding component’s inputs for the router.
  • The notable inclusion of TypeScript 5.0 support is particularly relevant for ECMAScript decorators that extend JavaScript classes, providing expanded functionality and compatibility.
  • Several schematics have been revised to facilitate independent applications, such as ng-new and the application schematic, the Angular Universal schematic, and the app-shell schematic.
  • Angular Universal allows Angular to render an app on the server, generating static HTML contents, which represents an app state.
  • In Angular 15, Angular Material transitioned to being built on MDC (Material Design Components). In version 16, the Angular team focused on incorporating design tokens from Material Design. This enables smoother migration to Angular Material 3 in the future and empowers designers and developers to extensively customize the user interface of their applications.

Easy Way to Install or Upgrade Angular 16

Angular offers multiple Angular development tools. Therefore, you just need to install Angular 16 via npm.

Execute the following command in the CLI.

npm install –global @angular/cli@next

Using this command, you can easily install Angular CLI’s latest version on your system.

Accelerate Your Application Performance with Angular 16

Following the release of Angular 15, which became a production-ready version on November 22, Angular 16 is now generating excitement for its significant enhancements and updates in terms of Angular’s reactivity and server-side rendering in the near future.

Furthermore, these forthcoming updates will empower AngularJS development companies and developers to harness improved developer experience and performance when building inclusive applications.

What’s New in Angular 15? All About New Must-Know Features & Updates

Angular is an in-demand and open-source framework that has come up with astonishing updates of the new version. Yes, you read it right.

Angular 15 is now live.

After the successful launch of Angular 14, Angular 15 is back with more and more exciting updates and allowing Angular developers in building robust applications.

Yeah, I know you all are too enthusiastic to see what’s new in Angular 15. So, let’s start to see what new updates have been introduced in the latest Angular version 15.

Key Takeaways

  • Angular, the most popular front-end framework, has officially jumped into the new version of Angular 15.
  • The Angular development team has primarily focused on stability concepts.
  • We’ve highlighted a detailed overview of the latest features of Angular 15 along with the new updates that the Angular team at Google has included in the Angular 15 release.
  • A step-by-step guide to upgrading from Angular 14 to Angular 15 is shown with an example.

What is New in Angular 15?

Angular 15 release date is 16th November 2022 and brought a big smile to Angular developers (including me) globally. The reason was quite obvious as they were expecting something big to announce and it really happened.

Angular 15 came with some limelight and interesting new features like

  • Stable standalone components API
  • Develop a multi-route application
  • Directive Composition API
  • Stable “NgOptimizedImage” Image Directive
  • Easily Reduce Boilerplate in Guards
  • Better Stack Traces For Debugging Process
  • CDK Listbox
  • ESBuild Support of Angular 15

Sounds interesting, Right. These are the major updates that are introduced in the Angular 15 version. We’ve highlighted detailed information on all such major features of Angular latest version 15. In this article, I hope that you have a clear idea of what is Angular and what it’s main used for.

Develop User-Friendly Web Applications with Angular 15

We have a team of Angular developers who are proficient in developing web and mobile apps using Angular version 15.

What are the Angular 15 Features?

Yeah! I know you all are too much excited to know about the inspiring features that are introduced in Angular 15. Let’s get a deep dive into all the technical aspects of current Angular version 15.

  1. Stable Standalone Components API

    In Angular v15, the first and most important feature that has been updated is stable standalone components API.

    You can quickly build Angular applications without any involvement of ngModules. Moreover, it is one of the best examples of gaining stability after detailed performance observation and amendments.

    If you’re entirely new to development or have a basic knowledge of JavaScript, Angular 15 is the best front–end development tool for learning Angular development practices.

    And if we talk about Angular standalone components, you can efficiently work with them across Angular applications. Moreover, they are 100% functional in Angular elements, HttpClient, Routes, and many more.

    The exciting part of Angular 15 is that you can quickly bootstrap an Angular app using only a single component.

    Throughout this article, we will demonstrate the examples taken from [Official documentation]

    How to use standalone API in Angular 15? To answer this question, please have a look at the below code.

    import {bootstrapApplication} from '@angular/platform-browser';
    import {ImageGridComponent} from'./image-grid';
     standalone: true,
     selector: 'photo-gallery',
     imports: [ImageGridComponent],
     template: `
       ... <image-grid [images]="imageList"></image-grid>
    export class PhotoGalleryComponent {
     // component logic

    In the above code, you can see that it mentions “standalone: true”. That’s an example of a standalone component API. So, you do not have to declare components, directives, and pipes into NgModule. If you do that mistake, get ready to receive a big error on your screen.

    With the help of stable Standalone APIs, you can effectively create Multi-Route Application

    • By using the new router standalone APIS, it becomes easy for you to design and build a multi-route application for your business needs.
    • Moreover, bundlers in Angular 15 are solely responsible for reducing the bundle size by reducing the unused features of the router, especially at the build time.

    In case, if you want to import NgModule in your standalone component APIs of Angular application, do it by simply writing import: [module_name] and you are good to go. Often, there exist many advantages to using the Angular framework, but Angular 15 possess more functionalities as compared to previous versions.

  2. You Can Now Easily Develop a Multi-Route Application

    Yes, you read it right. Angular 15 is now ready with an essential functionality named router standalone API that makes it easy for you to build multi-route applications.

    First, let’s declare the root route for your Angular application.

    export const appRoutes: Routes = [{
     path: 'lazy',
     loadChildren: () => import('./lazy/lazy.routes')
       .then(routes => routes.lazyRoutes)

    Next, you can declare lazyRoutes as:

    import {Routes} from '@angular/router';
    import {LazyComponent} from './lazy.component';
    export const lazyRoutes: Routes = [{path: '', component: LazyComponent}];

    Remember that you have to register the appRoutes in the bootstrapApplication method and call it using the ProvideRouter API, which is tree-shakable!

    bootstrapApplication(AppComponent, {
     providers: [
  3. Angular 15 Comes With Directive Composition API

    All Angular developers working with leading AngularJS development company, including me, were waiting for a feature where we could easily reuse the directives. And that’s what the Angular team made possible for us by including Standalone Directive Composition API and made our development experience smooth.

    Want to know how? Directive Composition API makes code usability enhancement and boosts host elements with directives. However, always remember that Directive Composition works only with standalone directives.

     selector: 'mat-menu',
     hostDirectives: [HasColor, {
       directive: CdkMenu,
       inputs: ['cdkMenuDisabled: disabled'],
       outputs: ['cdkMenuClosed: closed']
    class MatMenu {}

    You can see from the above code that the “MatMenu” selector has two hostDirectives: HasColor and CdkMenu.

    It means that MatMenu can reutilize all the properties from these two directives. Simply put, it can be inherited with the inputs, outputs, and logic associated with the HasColor directive and only logic and input from CdkMenu.

  4. Stable “NgOptimizedImage” Image Directive

    In the Angular 14 version, we’ve seen that one of the best ways to load image performance was by using the NgOptimizedImage directive. But it’s good news for Angular developers that the option of Image directive has become stable now.

    With the launch of Angular 15, there are some minor updates in NgOptimizedImage

    • Automatic srcset Generation: You can now automatically generate srcset for uploading an appropriately sized image when requested. It’s going to minimize the image download time.
    • Fill Mode [experimental]: This feature of Angular 15 eliminates the need for declaring image dimensions and will fill an image to its parent container. Trust me; it’s a pretty compelling model when the i image dimensions are unknown to web developers or you need to migrate the CSS background image to use the image directive.

    Now, let’s see how we can use the standalone NgOptimizedImage directive.

    You can use NgOptimizedImage inside your Angular component or NgModule.

    import { NgOptimizedImage } from '@angular/common';
    // Include it into the necessary NgModule
     imports: [NgOptimizedImage],
    class AppModule {}
    // ... or a standalone Component
     standalone: true
     imports: [NgOptimizedImage],
    class MyStandaloneComponent {}

    You just have to replace image src with ngsrc, especially when you’re using an Angular image directive within a specified component. It plays a vital role in determining the priority attribute to optimize the speed for the LCP images.

  5. Easily Reduce Boilerplate in Guards

    It’s a practical concept. So, let’s dive deep into the example without taking much time. First, we’ve defined guards to verify whether the user has logged in.

    @Injectable({ providedIn: 'root' })
    export class MyGuardWithDependency implements CanActivate {
     constructor(private loginService: LoginService) {}
     canActivate() {
       return this.loginService.isLoggedIn();
    const route = {
     path: 'somePath',
     canActivate: [MyGuardWithDependency]

    Here, you can see that LoginService contains the main logic, wherein the guard – only isLoggedIn() is one trigger invoked. As many boilerplates are included in this code segment, need to reduce it to the maximum.

    Thanks to Functional Router Guards, you can easily refactor code into the given-below code with the necessary boilerplates.

    const route = {
     path: 'admin',
     canActivate: [() => inject(LoginService).isLoggedIn()]

    One of the excellent parts about Functional Guards is that they are purely compostable. So, it brings convenience to you in many ways, including building robust functionalities like factor-like functions, accepting a given configuration and returning a guard or function that resolves a matter.

  6. Better Stack Traces For Debugging Process

    With the launch of the latest version of Angular, debugging Angular applications has been simplified and is now more straightforward with stack traces. Angular’s development team strives to achieve a standard for tracing development code irrespective of displaying libraries during the entire Angular development lifecycle.

    The primary aim of developing such stack traces is to improve the display of error messages as they come by. For example, developers get a one-liner error message during the own code discovery phase if we talk about the previous versions of Angular. And a lot more to deal with the lengthy procedure to resolve that bug.

    First, let’s see the snippet for previous error indications:

    ERROR Error: Uncaught (in promise): Error
       at app.component.ts:18:11
       at Generator.next (<anonymous>)
       at asyncGeneratorStep (asyncToGenerator.js:3:1)
       at _next (asyncToGenerator.js:25:1)
       at _ZoneDelegate.invoke (zone.js:372:26)
       at Object.onInvoke (core.mjs:26378:33)
       at _ZoneDelegate.invoke (zone.js:371:52)
       at Zone.run (zone.js:134:43)
       at zone.js:1275:36
       at _ZoneDelegate.invokeTask (zone.js:406:31)
       at resolvePromise (zone.js:1211:31)
       at zone.js:1118:17
       at zone.js:1134:33

    Developers were not able to understand the ERROR snippets due the following reasons:

    • Third-party dependencies were solely responsible for such error message inputs.
    • You were not getting any information related to where such user interaction encountered this bug.
    • With an active and long collaboration with the Angular and Chrome DevTool team, it was pretty useful for the Angular community to perform integration with third-party dependencies (with the help of node_modules, zone.js, etc.); and thus, could achieve linked stack traces.

    Now, with Angular 15, you can see the improvement in the stack traces as mentioned below:

    ERROR Error: Uncaught (in promise): Error
       at app.component.ts:18:11
       at fetch (async) 
       at (anonymous) (app.component.ts:4)
       at request (app.component.ts:4)
       at (anonymous) (app.component.ts:17)
       at submit (app.component.ts:15)
       at AppComponent_click_3_listener (app.component.html:4)

    The above code shows that error message information from where it got encountered,, so developers can directly go to that code part and fix it immediately.

  7. Stable MDC-Based Components

    MDC stands for Material Design Components, which are pre-built UI components that implement the Material Design specification. Angular provides a way to use MDC-based components in your application through the Angular Material library.

    Angular Material is a UI component library for Angular that is built with Material Design principles in mind. It provides a set of building UI components that can be easily integrated into your Angular application. Angular Material design components typically uses MDC web components under the hood, which means that the components are built using the same CSS and JavaScript as the MDC components.

    Some of the Angular Material components include buttons, cards, menus, dialogs, and many others. These components are fully customizable and can be styled to fit the look and feel of your application.

    To use Angular Material in your application, you need to install the @angular/material package and automatically import components and the required modules in your application module. Here’s an example:

    import { NgModule } from '@angular/core';
    import { MatButtonModule } from '@angular/material/button';
    import { MatCardModule } from '@angular/material/card';
      imports: [
      exports: [
    export class MaterialModule { }
  8. CDK Listbox

    CDK (Component Dev Kit) offers different behavior user interface primitives that help you build UI components. The Angular v15 gets a new primitive called CDK Listbox, making it easy for the Angular developers to customize Listbox interactions drawn up by the WAI-ARIA Listbox pattern based on requirements.

    cdk-listbox -angular 15

    Here, the behavioral interactions have impressive features like keyboard interactions, bidi layout support, lazy loading, and focus management. Moreover, it does not matter what you use; every directive creates associated ARIA roles with respective host Angular elements.

  9. ESBuild Support of Angular 15

    In the previous version of the Angular framework, you can efficiently support esbuild to effectively build a faster javascript bundler, enabling quick build done by simplifying the server-side rendering pipeline.

    The Angular 15 comes up with new experimental support for the ng build –watch support, Sass, SVG template, and file replacement.

    Now, let’s see the command for upgrading the angular.json builder is:

    “builder”: “@angular-devkit/build-angular:browser-esbuild”
  10. Functional Router Guards

    The Angular development team worked hard on minimizing the boilerplate code by simply performing code refactoring. It is made possible by using the tree-shakable standalone router APIs in your business applications. Moreover, it helps you reduce the bundle size of Angular with the new Functional Router Guards; we can refactor the code.

Related Post: Resolver in Angular

How to Install Angular 15?

Angular is one such robust framework that comes up with multiple Angular development tools. Installing Angular 15 on your system is very easy, you just need NPM installed in your system.

Command to install Angular 15: npm install – global @angular/cli@latest

How Can You Upgrade to Angular 15?

If you’re already using Angular version 14 or lower, and you want to upgrade to Angular 15, you need to type the following command.

Command: ng update @angular/cli @angular/core

Please follow Angular Update Guide

Upgrading from Angular 14 to Angular 15

  • If you want to use Angular 15, the foremost thing to perfect is updating Node.js versions to either of the 14.20.x, 16.13.x and 18.10.x.
  • Apart from Node.js updates, you need to mandatorily update the TypeScript version to 4.8 or later before approaching upgrading to Angular version 15.
  • Simply provide the command: ng update @angular/core@15 @angular/cli@15 in the application project directory to make your Angular 15 application update.
  • You can simply run ng update @angular/material@15 to update the Angular Material components.
  • For Angular version 15, the primary role of the Angular compiler is to prefix your @keyframes in CSS with the component’s scope. So, it becomes essential to update all such instances to specifically define Keyframes programmatically using Angular compiler. To do that, you just need to use global stylesheets, or simply update or make minor change in the component’s view encapsulation.
  • Removing enableIvy from the tsconfig.json file is an essential factor, as it is the only rendering engine in Angular 15, so it is not required.
  • Angular 15 developers can effectively use decorators in base classes with child classes. It will simply inherit constructors and use Dependency Injection for the Angular app. So, you need to decorate the base classes with either @Injectable or @Directive otherwise, else get ready to view the error from the compiler.
  • In Angular latest version 15, you can effectively call the setDisabledState, especially when a ControlValueAccessor is attached. It is made possible using FormsModule.withConfig or ReactiveFormsModule.withConfig.
  • You just need to ensure that all ActivatedRouteSnapshot objects have a title property in your Angular code. In v15 of Angular, ActivatedRouteSnapshot’s required property typically requires the title property.
  • In version 15 of Angular, you cannot configure relativeLinkResolution in the Router. It is primarily used to opt-out of the previous bug fix in the Angular 15 application that is now standard.
  • It’s mandatory for you to simple update instances of the DATE_PIPE_DEFAULT_TIMEZONE token to use DATE_PIPE_DEFAULT_OPTIONS for time zone configuration. The DATE_PIPE_DEFAULT_TIMEZONE token is deprecated In Angular version 15.
  • Existing instances of <iframe> may have security-sensitive attributes applied to them as an attribute or property binding. These security-sensitive attributes can appear in a template or in the host bindings of a directive. You need to such occurrences with regular updates for ensuring compliance with the new and stricter rules for <iframe> binding of the Angular 15 app.
  • Injector.get() instances that use an InjectFlags parameter should be updated to use an InjectOptions parameter. Injector.get(InjectFlags )’s parameter is deprecated in v15.
  • You need to change the instances of TestBed.inject() to use an InjectOptions parameter in Angular application. In Angular 15, the InjectFlags parameter of TestBed.inject() is deprecated.
  • In Angular 15 version, you will find deprecation in using providedIn: ngModule for an @Injectable and InjectionToken. And also in using providedIn: ‘any’ for an @Injectable or InjectionToken.
  • Likewise, you can effectively use the RouterLink directive for updating instances of the RouterLinkWithHrefdirective. In Angular 15, you’ll find deprecation with RouterLinkWithHref directive.
  • In Angular Material v15, the refactorization of many Angular web components has been performed on the official MDC. It eventually affects the DOM and CSS classes of many components available in the Angular app 15.
  • Once you upgrade your web application to Angular 15, you can quickly review your business application and its interactions to cope with the smooth functioning of all the application features including lazy loading functionality.
Related Post: Angular Best Practices


What are you waiting for? Upgrade to Angular 15 and grab the Angular 15 new features to build a robust and secure web application for your business needs.

Angular 16 is now available, and you can install it without obstructions. Still, if you find any issue in installing or planning to develop front-end development services, consult Albiorix now.