Upgrade to Angular 21

org.openrewrite.angular.UpgradeToAngular21

Migrates Angular 20.x applications to Angular 21. This includes running the Angular 20 migration first, flagging Karma test runner usage for Vitest migration, deprecated NgClass, zone.js-dependent test helpers, and upgrading TypeScript to 5.9.x.

Recipe source

This recipe is only available to users of Moderne.

This recipe is available under the Moderne Proprietary License.

Usage

In order to run JavaScript recipes, you will need to use the Moderne CLI. For JavaScript specific configuration instructions, please see our configuring JavaScript guide.

Once the CLI is installed, you can install this JavaScript recipe package by running the following command:

Install the recipe package

mod config recipes npm install @openrewrite/recipes-angular

Then, you can run the recipe via:

Run the recipe

mod run . --recipe org.openrewrite.angular.UpgradeToAngular21