Angular Tree Shaking: Optimize Your Application’s Size 🌳

As web applications grow in complexity, optimizing their size becomes crucial for improving performance and user experience. One technique that Angular provides to achieve this is called “tree shaking.” In this article, we will explore what tree shaking is, how it works in Angular, and how you can leverage it to optimize your application’s size. We will also provide a practical example to illustrate the concept.

What is Tree Shaking?

Tree shaking is a process that eliminates unused code from your application bundle. It is a form of dead code elimination that aims to reduce the size of the final JavaScript bundle sent to the browser. By removing unused code, tree shaking helps to minimize the amount of data that needs to be transferred over the network, resulting in faster loading times.

How Does Tree Shaking Work in Angular?

Angular leverages the underlying capabilities of the JavaScript module system, specifically the ES2015 module syntax (import/export), to perform tree shaking. When you build an Angular application using the Angular CLI, it automatically applies tree shaking to optimize the generated bundles.

During the build process, Angular analyzes the import statements in your code to determine which parts of your application are actually…