import type { BundlerCTXMap, BunextPageLastmodRecord } from "../types";
/**
 * # Path of the page last-modified record
 */
export declare function grabPageLastmodFile(lastmod_file?: string): string;
export declare function readPageLastmodRecord(lastmod_file?: string): BunextPageLastmodRecord | undefined;
/**
 * # Record when each page's client bundle last changed
 * A page's bundle hash covers its whole client import graph (including
 * the root layout), so a component edit re-dates every page that uses it.
 * Unchanged pages keep their previous date; removed pages are dropped.
 */
export declare function updatePageLastmodRecord({ ctx_map, build_date, lastmod_file, }: {
    ctx_map: {
        [local_path: string]: BundlerCTXMap;
    };
    build_date?: Date;
    lastmod_file?: string;
}): BunextPageLastmodRecord;