MobX reactivity

The form is designed for MobX applications and does not depend on React or a hook lifecycle.

Granular field state

Each registered field exposes stable observable state for its error, dirty, touched, and validating status.

The form also exposes computed dirty and valid flags, together with its disabled state.

Plain values for side effects

The submit callback receives a plain snapshot of the current values, separate from the observable form data.

Updating nested values

Nested values can be addressed with dot-separated paths. Updates can independently control dirty tracking, touched state, and validation.

When changing several values directly, use mutate() to group the changes and validate the changed paths together.