import { FieldPath, FieldValues, PathValue, UseFormReturn } from 'react-hook-form';
/**
 * Minimal interface for form methods required by useOnFormValueChange.
 * This helps avoid type conflicts between react-hook-form and remix-hook-form.
 */
export interface WatchableFormMethods<TFieldValues extends FieldValues = FieldValues> {
    watch: UseFormReturn<TFieldValues>['watch'];
    getValues: UseFormReturn<TFieldValues>['getValues'];
}
export interface UseOnFormValueChangeOptions<TFieldValues extends FieldValues = FieldValues, TName extends FieldPath<TFieldValues> = FieldPath<TFieldValues>> {
    /**
     * The name of the form field to watch
     */
    name: TName;
    /**
     * Callback function that runs when the field value changes
     * @param value - The new value of the watched field
     * @param prevValue - The previous value of the watched field
     */
    onChange: (value: PathValue<TFieldValues, TName>, prevValue: PathValue<TFieldValues, TName>) => void;
    /**
     * Optional form methods if not using RemixFormProvider context
     */
    methods?: WatchableFormMethods<TFieldValues>;
    /**
     * Whether the hook is enabled (default: true)
     */
    enabled?: boolean;
}
/**
 * A hook that watches a specific form field and executes a callback when its value changes.
 * This is useful for creating reactive form behaviors where one field's value affects another field.
 *
 * @example
 * ```tsx
 * // Make a discount field appear when order total exceeds $100
 * useOnFormValueChange({
 *   name: 'orderTotal',
 *   onChange: (value) => {
 *     if (value > 100) {
 *       methods.setValue('discountCode', '');
 *     }
 *   }
 * });
 * ```
 *
 * @example
 * ```tsx
 * // Update a full name field when first or last name changes
 * useOnFormValueChange({
 *   name: 'firstName',
 *   onChange: (value) => {
 *     const lastName = methods.getValues('lastName');
 *     methods.setValue('fullName', `${value} ${lastName}`);
 *   }
 * });
 * ```
 */
export declare const useOnFormValueChange: <TFieldValues extends FieldValues = FieldValues, TName extends FieldPath<TFieldValues> = FieldPath<TFieldValues>>(options: UseOnFormValueChangeOptions<TFieldValues, TName>) => void;
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