reference-signal-forms

What the skill teaches

A reference skill in the Angular repository that agents must read before changing the signal-based forms code in packages/forms/signals. It explains the idea behind the API, where a signal holds the form's data and the form is a view over it that adds validity, dirty and touched state, with nested fields reached through a lazily resolving proxy and rules such as validation and disabled state declared separately in schemas. It describes the central field node class, how synchronous, asynchronous and server errors are tracked, the directive that binds fields to inputs and custom controls, and how reads, writes and validation flow. A short example and a list of key files are included.

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