import { Field, PluginInjector, PluginOf, Subscriber, Unsubscribe, ValueOf } from 'roqueform';
/**
 * The plugin added to fields by the {@link resetPlugin}.
 */
export interface ResetPlugin {
    /**
     * `true` if the field value is different from its initial value.
     */
    readonly isDirty: boolean;
    /**
     * Sets the initial value of the field and notifies ancestors and descendants.
     *
     * @param value The initial value to set.
     */
    setInitialValue(value: ValueOf<this>): void;
    /**
     * Reverts the field to its initial value.
     */
    reset(): void;
    /**
     * Returns all fields that have {@link roqueform!BareField.value a value} that is different from
     * {@link roqueform!BareField.initialValue an initial value}.
     *
     * @see {@link isDirty}
     */
    getDirtyFields(): Field<any, PluginOf<this>>[];
    /**
     * Subscribes to changes of {@link roqueform!BareField.initialValue the initial value}.
     *
     * @param eventType The type of the event.
     * @param subscriber The subscriber that would be triggered.
     * @returns The callback to unsubscribe the subscriber.
     */
    on(eventType: 'change:initialValue', subscriber: Subscriber<any, PluginOf<this>>): Unsubscribe;
}
/**
 * Enhances fields with methods that manage the initial value.
 *
 * @param equalityChecker The callback that compares initial value and the current value of the field. By default, the
 * deep comparison is used.
 */
export declare function resetPlugin(equalityChecker?: (initialValue: any, value: any) => boolean): PluginInjector<ResetPlugin>;