import type { QueryCacheEntry, QueryKey, QueryOptions } from "./types.js";
export declare class QueryCache {
    private cache;
    private gcInterval;
    constructor();
    /**
     * Gets a query from the cache by key.
     */
    get<TData, TError>(queryKey: QueryKey): QueryCacheEntry<TData, TError> | undefined;
    /**
     * Finds all entries matching a query key pattern.
     */
    findAll(queryKey: QueryKey): QueryCacheEntry<unknown, unknown>[];
    /**
     * Gets or creates a query entry in the cache.
     */
    getOrCreate<TData, TError = Error>(queryKey: QueryKey, queryFn: () => Promise<TData>, options: QueryOptions<TData, TError>, defaultOptions?: Partial<Omit<QueryOptions<TData, TError>, "queryKey" | "queryFn">>): QueryCacheEntry<TData, TError>;
    /**
     * Sets query data directly in the cache.
     */
    setData<TData>(queryKey: QueryKey, data: TData): void;
    /**
     * Marks queries as stale (invalidates them).
     */
    invalidate(queryKey: QueryKey): void;
    /**
     * Removes a query from the cache.
     */
    remove(queryKey: QueryKey): void;
    /**
     * Clears all queries from the cache.
     */
    clear(): void;
    /**
     * Subscribes to query updates.
     */
    subscribe(queryKey: QueryKey, callback: () => void): () => void;
    /**
     * Notifies all subscribers of a query entry.
     */
    notifySubscribers<TData, TError>(entry: QueryCacheEntry<TData, TError>): void;
    /**
     * Checks if a query is stale.
     */
    isStale<TData, TError>(entry: QueryCacheEntry<TData, TError>): boolean;
    /**
     * Checks if a query should be garbage collected.
     */
    shouldGarbageCollect<TData, TError>(entry: QueryCacheEntry<TData, TError>): boolean;
    /**
     * Starts the garbage collection interval.
     */
    private startGarbageCollection;
    /**
     * Stops the garbage collection interval.
     */
    stopGarbageCollection(): void;
    /**
     * Garbage collects unused queries.
     */
    private garbageCollect;
    /**
     * Creates initial query state.
     */
    private createInitialState;
}
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