ng-register-vitest

Migrating Angular tests to Vitest involves removing Karma and Jasmine, adding Vitest configuration and setup files, updating tsconfig and angular.json, and applying API changes for spies, timers, and DOM testing to achieve a Vitest-based unit testing workflow.

Vitest migration requires Angular v20.2 or later, TypeScript 5.7 or later, and Node.js 20 or higher. These prerequisites ensure compatibility with the Vitest configuration and align with zoneless or OnPush testing patterns.

When switching to Vitest, you update Jasmine spies and timers to their Vitest equivalents. The migration provides guidance for these API changes to ensure your component and service tests maintain compatibility in the Vitest environment.

Yes, migrating Angular to Vitest supports large codebases with multiple test suites. It provides practical step-by-step migration guidance for dependency management and test compatibility across components and services to reduce setup frictions.

Angular Vitest setup requires modifying angular.json and tsconfig files, alongside adding a new Vitest configuration file and a test setup file. These updates remove Karma dependencies and establish the Vitest testing workflow.