import type { MMKV } from '../specs/MMKV.nitro';
/**
 * Listen for changes in the given MMKV storage instance.
 * If no instance is passed, the default instance will be used.
 * @param valueChangedListener The function to call whenever a value inside the storage instance changes
 * @param instance The instance to listen to changes to (or the default instance)
 *
 * @example
 * ```ts
 * useMMKVListener((key) => {
 *   console.log(`Value for "${key}" changed!`)
 * })
 * ```
 */
export declare function useMMKVListener(valueChangedListener: (key: string) => void, instance?: MMKV): void;