import { StorageAdapter } from './urql-exchange-graphcache-chunk.js';




interface StorageOptions {
    /** Name of the IndexedDB database that will be used.
     * @defaultValue `'graphcache-v4'`
     */
    idbName?: string;
    /** Maximum age of cache entries (in days) after which data is discarded.
     * @defaultValue `7` days
     */
    maxAge?: number;
    /** Gets Called when the exchange has hydrated the data from storage. */
    onCacheHydrated?: () => void;
}
/** Sample storage adapter persisting to IndexedDB. */
interface DefaultStorage extends StorageAdapter {
    /** Clears the entire IndexedDB storage. */
    clear(): Promise<any>;
}
/** Creates a default {@link StorageAdapter} which uses IndexedDB for storage.
 *
 * @param opts - A {@link StorageOptions} configuration object.
 * @returns the created {@link StorageAdapter}.
 *
 * @remarks
 * The default storage uses IndexedDB to persist the normalized cache for
 * offline use. It demonstrates that the cache can be chunked by timestamps.
 *
 * Note: We have no data on stability of this storage and our Offline Support
 * for large APIs or longterm use. Proceed with caution.
 */
declare const makeDefaultStorage: (opts?: StorageOptions) => DefaultStorage;

export { DefaultStorage, StorageOptions, makeDefaultStorage };