Angular 18 Zoneless Change Detection

Angular 18 Zoneless Change Detection

Transitioning to zoneless change detection in Angular 18 represents a significant leap forward for developers. It promises not only immediate performance enhancements and streamlined development processes but also opens doors to greater efficiency and improved user experiences within Angular applications.

The move away from Zone.js introduces a paradigm shift in how change detection is managed within Angular. Developers can anticipate a smoother and faster operation of their applications, with fewer overheads and bottlenecks. This means that tasks such as updating the UI in response to user interactions or data changes will be executed more swiftly, resulting in a more responsive and seamless user experience.

Moreover, the benefits extend beyond just the reduction in payload size, although that alone is a considerable advantage. By minimizing the amount of code needed to be loaded initially, applications can start up more quickly and consume fewer system resources, leading to improved performance and user satisfaction.

To enable it, we just need to add provideExperimentalZonelessChangeDetection() in our providers array in the src/main.ts file:

bootstrapApplication(AppComponent, {
  providers: [
    // 👇 Add this line to enable Zoneless Change Detection
    provideExperimentalZonelessChangeDetection(),
  ],
});

Next, in your angular.json file remove Zone.js from your polyfills:

{
  "projects": {
    "app": {
      "architect": {
        "build": {
          "options": {
            "polyfills": [
              "zone.js" // <- This has to be removed
            ],
          }
        }
      }
    }
  }
}

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