/** Tells us which form fields are valid. */
export interface FieldValidity {
    [name: string]: boolean;
}
/**
 * Like [[`useFieldValidity`]], but lets you pass in whatever
 * `fieldValidityIsValid` function you want.
 *
 * Usually you'll want to use [[`useFieldValidity`]].
 */
export declare function useFieldValidityCore({ onValidChange, defaultValue, fieldValidityIsValid, }: {
    onValidChange: ((valid: boolean) => void) | undefined;
    defaultValue: FieldValidity | undefined;
    fieldValidityIsValid: (fieldValidity: FieldValidity) => boolean;
}): {
    onChildValidChange: (fieldName: string, valid: boolean) => void;
    allFieldsValid: boolean;
    fieldValidity: FieldValidity;
};
/**
 * Keep tracks of a [[`FieldValidity`]] and returns a function to update the
 * the `FieldValidty`.
 *
 * You don't need to use this if there is only one validated input. In that case,
 * a simple `const [valid, setValid] = useState(false)` is sufficient.
 *
 * Top-level usage (e.g. when using `EasyFormDialog`):
 *
 * ```
 * const { onChildValidChange, allFieldsValid } = useFieldValidity()
 * ```
 *
 * Usage with `onValidChange` from props:
 *
 * ```
 * const { onChildValidChange } = useFieldValidity({ onValidChange })
 * ```
 */
export declare function useFieldValidity(options?: {
    onValidChange?: (valid: boolean) => void;
    defaultValue?: FieldValidity;
}): ReturnType<typeof useFieldValidityCore>;