import { SubscriptionCallback, Selector, Store, Middleware } from './types';
/**
 * Create a store.
 *
 * @param initialState - The initial value of the state.
 * @param middleware - Middleware to use for this store. You can compose multiple
 * middlewares with `composeMiddlewares` and `pipeMiddlewares`.
 *
 * @public
 */
export declare function of<S>(initialState: S, middleware?: Middleware<S>): Store<S>;
/**
 * Return the current state of a store.
 *
 * @param store - The store you want to get the current state from.
 *
 * @throws `TypeError` if the store is not a correct `Store` instance.
 *
 * @public
 */
export declare function deref<S>(store: Store<S>): S;
/**
 * Change the state of a store using a function.
 *
 * @param store - The store of which you want to change the state.
 * @param mutationFn - The function used to compute the value of the future state.
 *
 * @throws `TypeError` if the store is not a correct `Store` instance.
 *
 * @public
 */
export declare function swap<S>(store: Store<S>, mutationFn: (current: S) => S): void;
/**
 * Change the state of a store with a new one.
 *
 * @param store - The store of which you want to change the state.
 * @param current - The new state.
 *
 * @throws `TypeError` if the store is not a correct `Store` instance.
 *
 * @public
 */
export declare function set<S>(store: Store<S>, current: S): void;
/**
 * Subscribe to state changes.
 *
 * @param store - The store you want to subscribe to.
 * @param callback - The function to call when the state changes.
 *
 * @returns An unsubscribe function for this specific subscription.
 *
 * @throws `TypeError` if the store is not a correct `Store` instance.
 *
 * @public
 */
export declare function subscribe<S>(store: Store<S>, callback: SubscriptionCallback<S>): () => void;
/**
 * Subscribe to state changes.
 *
 * @param store - The store you want to subscribe to.
 * @param callback - The function to call when the state changes.
 * @param selector - The selector function, narrowing down the part of the state you want to subscribe to.
 *
 * @returns An unsubscribe function for this specific subscription.
 *
 * @throws `TypeError` if the store is not a correct `Store` instance.
 *
 * @public
 */
export declare function subscribe<S, R>(store: Store<S>, callback: SubscriptionCallback<S>, selector: Selector<S, R>): () => void;
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