What's new in Angular 8

Angular 8 was released on May 28, 2019. Angular 8 provides features like Differential loading, Dynamic imports for lazy routes, Web workers, TypeScript 3.4 support and Angular Ivy & Bazel as an opt-in preview features.

Differential loading
With differential loading, the Angular production build will produce 2 separate bundle files. One ES5 bundle for legacy browsers. Another ES6 bundle for the latest browsers which support ES6 features. This helps in improving the loading speed and performance in modern browsers since this bundle file is smaller in size.

JIT vs AOT compiler in Angular

Angular applications consists of components and service classes written in TypeScript and HTML templates. Browsers cannot understand TypeScript hence they need to be compiled into JavaScript.

Angular provides 2 types of compilers for this compiling process.

1. Just-In-Time (JIT) compiler.
2. Ahead-of-Time (AOT) compiler

Angular AOT Compiler

AOT stands for Ahead of Time. AOT compiler helps pre-compile Angular applications so that they can be rendered faster in the browser.

We know that Angular applications consists of components and service classes written in TypeScript and HTML templates. Browsers cannot understand TypeScript hence they need to be compiled into JavaScript.

Angular provides 2 types of compilers for this compiling process.