import type { CacheBackend, CacheReadOptions } from "./backend.js";
interface PendingRequest {
    key: string;
    resolve: (value: string | null) => void;
    reject: (error: Error) => void;
    /** See {@link CacheReadOptions}; forwarded to the flush that serves this key. */
    onAuthority?: CacheReadOptions["onAuthority"];
}
interface RequestCacheContext {
    cache: Map<string, string | null>;
    pending: Map<string, Promise<string | null>>;
    mutationVersions: Map<string, number>;
    batchQueue: PendingRequest[];
    batchTimer: ReturnType<typeof setTimeout> | null;
}
export declare function runWithCacheBatching<T>(fn: () => Promise<T>): Promise<T>;
export declare function getRequestCacheContext(): RequestCacheContext | undefined;
export declare function getCachedWithBatching(backend: CacheBackend, key: string, options?: CacheReadOptions): Promise<string | null>;
export declare function setInRequestCache(key: string, value: string | null): void;
export declare function getRequestCacheStats(): {
    hits: number;
    stored: number;
} | null;
export {};
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