Angular AOT (Ahead-of-Time) Compilation
Angular AOT is a compilation process that converts your Angular application code into efficient JavaScript code during the build time itself, rather than during the runtime. This results in improved performance, smaller bundle sizes and eliminates the need for a compiler in the browser.
Syntax
To enable AOT compilation in Angular, you need to add the --aot flag during the build process, like so:
ng build --aot
Example
ng build --prod --aot
Output
The above example will produce a production-ready bundle of your Angular application with AOT enabled, resulting in a smaller, optimized and faster application.
Explanation
Angular AOT compilation generates optimized code that eliminates the runtime compilation step and reduces the size of the compiled bundle. This leads to faster load times for your application and improves the overall performance.
Use
You should use AOT compilation in your Angular application when:
- You want to improve the performance of your application.
- You want to reduce the size of the compiled code.
- You want to eliminate the need for a compiler in the browser.
- You want to create a faster, more optimized and production-ready application.
Important Points
- AOT compilation is done during the build process, which means that it is a one-time activity and not required during the runtime.
- AOT optimized code is smaller, faster and eliminates the need for a compiler in the browser, resulting in a better user experience.
- AOT can lead to slower development build times due to the additional compilation step, but this is outweighed by the benefits during production.
Summary
Angular AOT compilation is a process that optimizes your code during the build process itself, resulting in a smaller, faster and more optimized application. It eliminates the need for a compiler in the browser, reduces the bundle size and improves the performance of your application. Use AOT when you want to create a faster, more optimized and production-ready Angular application.