import type { PrimitiveAtom } from 'jotai-expose-store';
declare type Unsubscribe = () => void;
declare type Storage<Value> = {
    getItem: (key: string) => Value | Promise<Value>;
    setItem: (key: string, newValue: Value) => void | Promise<void>;
    delayInit?: boolean;
    subscribe?: (key: string, callback: (value: Value) => void) => Unsubscribe;
};
declare type StringStorage = {
    getItem: (key: string) => string | null | Promise<string | null>;
    setItem: (key: string, newValue: string) => void | Promise<void>;
};
export declare const createJSONStorage: (getStringStorage: () => StringStorage) => Storage<unknown>;
export declare function atomWithStorage<Value>(key: string, initialValue: Value, storage?: Storage<Value>): PrimitiveAtom<Value>;
export declare function atomWithHash<Value>(key: string, initialValue: Value, serialize?: (val: Value) => string, deserialize?: (str: string) => Value): PrimitiveAtom<Value>;
export {};