How to Use Zod with Angular Signal Forms (Step-by-Step Migration)
December 11, 2025You've got a form working perfectly with Reactive Forms and Zod validation, but after migrating to Signal Forms, your validation stops working. Forms submit even when invalid, and error messages disappear. The problem? Signal Forms use a completely different validation API than Reactive Forms. Angular's validateTree() function bridges this gap by translating Zod's error map into Signal Forms' validation format. This lets you keep centralized Zod schemas while still leveraging Signal Forms’ reactive state management. This step-by-step tutorial shows exactly how to wire Zod validation into Angular Signal Forms.