import type { DataKey, Database } from "../util/data.js";
import type { ItemQuery, Items, OptionalItem } from "../util/item.js";
import type { Sourceable } from "../util/source.js";
import type { Updates } from "../util/update.js";
import { MemoryProvider } from "./MemoryProvider.js";
import { AsyncProvider } from "./Provider.js";
/** Keep a copy of asynchronous remote data in a local synchronous cache. */
export declare class CacheProvider<T extends Database> extends AsyncProvider<T> implements Sourceable<AsyncProvider<T>> {
    readonly source: AsyncProvider<T>;
    readonly memory: MemoryProvider<T>;
    constructor(source: AsyncProvider<T>, cache?: MemoryProvider<T>);
    getItem<K extends DataKey<T>>(collection: K, id: string): Promise<OptionalItem<T[K]>>;
    getItemSequence<K extends DataKey<T>>(collection: K, id: string): AsyncIterable<OptionalItem<T[K]>>;
    addItem<K extends DataKey<T>>(collection: K, data: T[K]): Promise<string>;
    setItem<K extends DataKey<T>>(collection: K, id: string, data: T[K]): Promise<void>;
    updateItem<K extends DataKey<T>>(collection: K, id: string, updates: Updates<T[K]>): Promise<void>;
    deleteItem<K extends DataKey<T>>(collection: K, id: string): Promise<void>;
    countQuery<K extends DataKey<T>>(collection: K, query?: ItemQuery<T[K]>): Promise<number>;
    getQuery<K extends DataKey<T>>(collection: K, query?: ItemQuery<T[K]>): Promise<Items<T[K]>>;
    getQuerySequence<K extends DataKey<T>>(collection: K, query?: ItemQuery<T[K]>): AsyncIterable<Items<T[K]>>;
    setQuery<K extends DataKey<T>>(collection: K, query: ItemQuery<T[K]>, data: T[K]): Promise<void>;
    updateQuery<K extends DataKey<T>>(collection: K, query: ItemQuery<T[K]>, updates: Updates<T[K]>): Promise<void>;
    deleteQuery<K extends DataKey<T>>(collection: K, query: ItemQuery<T[K]>): Promise<void>;
}