Boost Your Angular Application with AOT Compilation

· 319 words · 2 minute read

Optimize your Angular application’s performance and improve its loading speed. In this post, we’ll explore how you can boost your Angular application with Ahead-of-Time (AOT) compilation.

Ahead-of-Time (AOT) compilation is a powerful technique introduced in Angular version 2 to pre-compile an application’s templates and code during the build process. By eliminating the need for Just-in-Time (JIT) compilation at runtime, AOT compilation achieves faster application startup times, smaller bundle sizes, and improved performance. It has been available since its introduction and continues to be a valuable optimization tool in Angular development.

Since JIT is the default compiler, to build your Angular application with AOT compilation, you should use the flag --aot In the terminal, run the following command:

ng build --aot

This command will trigger the AOT compilation process and generate optimized JavaScript code that is ready for deployment.

Once your application is built with AOT compilation, you can start reaping the benefits. Here are some advantages of using AOT compilation in your Angular application:

Faster Startup Times: The browser can load your application more quickly since there is no need for JIT compilation. This results in a snappier user experience and improved perceived performance.

Smaller Bundle Sizes: AOT eliminates the need to ship the Angular compiler to the client, reducing the bundle size. Smaller bundle sizes mean faster downloads and improved network performance.

Detect Template Errors: AOT catches template errors during the build process, preventing runtime errors.

Better Security: Since AOT compilation eliminates the need for dynamic template evaluation, it helps mitigate potential security vulnerabilities, such as cross-site scripting (XSS) attacks.

Optimized Change Detection: AOT-compiled applications benefit from optimized change detection, resulting in faster rendering and improved performance when data changes.

In conclusion, if you want to boost your Angular application’s performance, give AOT compilation a try. Enable AOT, build your application, and enjoy the benefits of faster startup times, smaller bundle sizes, improved security, and optimized change detection.