export interface IAsyncStorage {
    /**
     * Get the value for the given key.
     */
    getItem(key: string): Promise<string | null>;
    /**
     * Set the value for the given key.
     */
    setItem(key: string, value: string): Promise<void>;
    /**
     * Remove the value for the given key.
     */
    removeItem(key: string): Promise<void>;
    /**
     * Clear all data for this storage.
     */
    clear(): Promise<void>;
}
/**
 * Error thrown when AsyncStorage fails to get/set/remove/clear the storage.
 */
export declare class AsyncStorageError extends Error {
    constructor(message: string);
}
/**
 * A wrapper class for AsyncStorage for strict typing and inbuilt JSON serialization.
 *
 * TODO: add support for custom JSON serializer if needed
 */
export declare class AsyncStorage<T> {
    private storage;
    private keyPrefix;
    /**
     * Create a new AsyncStorage instance. The keyPrefix is used to namespace the keys in the
     * underlying storage layer. It's optional, but recommended to avoid key collisions.
     */
    constructor(storage: IAsyncStorage, keyPrefix?: string);
    /**
     * Create a new AsyncStorage instance with initial data.
     */
    static withInitialData<T>(storage: IAsyncStorage, initialData: Record<string, T>, keyPrefix?: string): Promise<AsyncStorage<T>>;
    /**
     * Get the value for the given key.
     */
    getItem(key: string): Promise<T | null>;
    /**
     * Set the value for the given key.
     */
    setItem(key: string, value: T): Promise<void>;
    /**
     * Remove the value for the given key.
     */
    removeItem(key: string): Promise<void>;
    /**
     * Calling this method will clear all data for the given storage layer.
     *
     * It might lead to unexpected behavior and/or data loss if other modules are using the same storage layer.
     */
    clear(): Promise<void>;
}
/**
 * A class to manage the storage layer.
 */
declare class StorageLayer {
    private storage;
    isInitialized(): boolean;
    initialize(storage: IAsyncStorage): void;
    getStorage(): IAsyncStorage;
}
/**
 * The global storage layer instance.
 */
export declare const storageLayer: StorageLayer;
export {};