import StateChangeKind from "./StateChangeKind";
/**
 * Represents a single state mutation ready for persistence.
 *
 * ActorStateChange encapsulates a state modification that is ready to be sent to the
 * state provider for persistence. It combines the state key, the new value, and the
 * type of modification (add, update, or remove).
 *
 * These objects are created during the transactional batch process by ActorStateManager
 * and are sent to StateProvider for atomic persistence through the Dapr state management API.
 *
 * @typeParam T - The type of the state value.
 *
 * @internal Used by ActorStateManager and StateProvider for transactional persistence.
 */
export default class ActorStateChange<T> {
    private readonly stateName;
    private readonly value;
    private readonly changeKind;
    /**
     * Constructs an ActorStateChange.
     *
     * @param stateName - The key identifying this state item.
     * @param value - The new value to persist (or null for removes).
     * @param changeKind - The type of modification ({@link StateChangeKind}).
     */
    constructor(stateName: string, value: T, changeKind: StateChangeKind);
    /**
     * Retrieves the state key.
     *
     * @returns The key identifying this state item.
     */
    getStateName(): string;
    /**
     * Retrieves the state value to be persisted.
     *
     * @returns The new state value (or null for removes).
     */
    getValue(): T;
    /**
     * Retrieves the kind of modification.
     *
     * @returns The {@link StateChangeKind} (ADD, UPDATE, or REMOVE).
     */
    getChangeKind(): StateChangeKind;
}