import type { FetchedPage } from "./browser.js";
export interface CacheOptions {
    dir: string;
    ttlMs: number;
}
export interface PageCache {
    readonly dir: string;
    readonly ttlMs: number;
    get(url: string): Promise<FetchedPage | null>;
    put(url: string, page: FetchedPage): Promise<void>;
    readonly hits: number;
    readonly misses: number;
}
export declare function createCache(opts: CacheOptions): PageCache;
export declare function cacheKey(url: string): string;
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