import type { FileHandle } from "node:fs/promises";
export type PagedReaderOptions = {
    pageSize?: number;
    maxCachedPages?: number;
};
/**
 * Small paged reader for repeated random access against a file handle.
 *
 * Pages are cached in insertion order and the oldest page is evicted when the
 * cache grows past `maxCachedPages`.
 */
export declare class PagedReader {
    private readonly pageSize;
    private readonly maxCachedPages;
    private readonly cache;
    private readonly handle;
    constructor(handle: FileHandle, options?: PagedReaderOptions);
    read(offset: number, length: number): Promise<Buffer>;
    readByte(offset: number): Promise<number | undefined>;
    private readPage;
}
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