import { ProviderSource } from "../types/index.ts";
export declare class Cache<T = any> {
    private storage;
    private autoCleanupInterval;
    private maxSize;
    /**
     * @param maxSize Maximum number of entries before LRU-style eviction kicks in.
     *               Defaults to 10,000. Set to `Infinity` to disable eviction.
     */
    constructor(maxSize?: number);
    set(key: string, data: T, ttl: number): void;
    get<G = T>(key: string): G | null;
    delete(key: string): void;
    clear(): void;
    get size(): number;
    has(key: string): boolean;
    isExpired(key: string): boolean;
    setMaxSize(maxSize: number): void;
    private startAutoCleanup;
    /** Stop the auto-cleanup interval. Call this when the cache is no longer needed. */
    stopAutoCleanup(): void;
    private clearExpired;
}
export declare function createSourceCacheKey(source: ProviderSource): string;
export declare const createHealthCacheKey: (source: ProviderSource) => string;
export declare function isSourceCached(source: ProviderSource): boolean;
export declare const CACHE: Cache<any>;