Google continues to enhance Angular which led to the creation of numerous versions in a span of five years. With its rapid growth, the latest version has become one of the most widely used frameworks with over a million developers using it.
The 8.0.0 release of Angular is here! This is a major release spanning the entire platform, such as framework, Angular Material, and the CLI with major versions. This release improves application startup time on modern browsers, provides new APIs for tapping into the CLI, and aligns Angular to the ecosystem and more web standards.
New Angular 8.0 Features
- Legacy (ES5) and modern (ES2015+) will now be included in the Command Line Interface (CLI) as part of the build process.
- Differential loading is a strategy allowing the CLI build two separate bundles according to deployed application.
- Modern bundle contains modern syntax leverages built-in support in modern browsers, ships less.
- These will be differentially loaded to improve the loading speed and Time to Interactive (TTI) for modern browsers.
Angular Router Backwards Compatibility
Latest version of Angular ensures backward compatibility. This means the latest version will still work with older versions of the framework, making it easier to migrate and transition to the newest Angular version. By allowing lazy loading on parts of AngularJS apps using $route APIs, it simplifies the upgrade and transferring of large projects.
Ivy Rendering Engine
The most important features of Angular 8 is IVY render engine.
- Google introduced a preview version of Ivy with the objective to receive feedback from the Angular Developer community related to Ivy. It is currently in the production environment right now.
- Ivy is the new and latest Angular Compiler as well as a tool serving as a new rendering pipeline.
- Generates significantly small bundles and can perform incremental compilation in simple manner.
- Ivy forms the foundation of future innovations in the Angular world.
- Many sections in the Angular have been changed, after switching to Ivy, the existing application will just work same as earlier. But this will help reduce the size of the bundles.
In Angular 8, Google introduced another build tool called Bazel as open source. This tool has been used at Google internally since long time. Bazel for Angular 8 is yet not ready and is introduced as an opt-in option. Expected to be included in the Angular CLI in version 9, Bazel offers several features.
- Faster build takes time (while first build is time-consuming the concurrent builds take less time).
- Use for incremental build and deploy only what has been changed rather than change the entire app.
- Eject the Bazel file which is normally hidden.
- Incremental Build: Ability to build and deploy only what has changed rather than the entire App.You can eject the Bazel files, they are hidden by default.
- Web worker support is added in Angular 8.
- Add web workers and delegate tedious and time-consuming processes which you want to run in the background to a web worker.
- Run the below command to generate a new web worker using the Angular CLI
- Web workers help run scripts in background without interfering with the user interface.
- In order to increase efficiency, bundling support will be integrated into the CLI for web workers.
- By moving the tasks off the main thread, it enhances the application’s speed.
Opt-In Usage Sharing
- Opt-In telemetry will be added to the CLI allowing gathering useful data to analyze and possibly apply for the next update.
- Upon developer’s consent, the telemetry will collect information such as commands used and build speed.
- Opt-in metric will provide Angular team more insight on how developers are using Angular and what can be done to further improve it.
The Angular Team is also implementing routine dependency updates on tools like TypeScript, RxJS, and Node to keep in sync with the rest of the system.
Future Plans of Angular
- The Angular team plans to release the Beta Version of Angular in April 2019 and release the final 8.0 version by May.
- Ivy’s full roll out is expected in version 9 of Angular.
How to update to version 8
Visit update.angular.io for detailed information and guidance. For most developers, one command should take care of this update:
ng update @angular/cli @angular/core
Angular 8 aims to make the lives of web developers easy and smooth. These new features and updates aim to make Angular a robust development platform.
Originally published at https://www.hiddenbrains.com on July 8, 2019.