import type { VirtualFile } from "./virtual-file/index.cjs";
/**
 * Calculates checksum for a single byte array.
 *
 * @param bytes - The byte array to calculate the checksum for.
 * @returns A single sha-256 checksum.
 */
export declare function checksum(bytes: VirtualFile | Uint8Array | string): Promise<Uint8Array>;
/**
 * Calculates checksum over multiple files in a reproducible way.
 *
 * 1. Sort all the files by their paths.
 * 2. Calculate sha-256 checksum of each file separately.
 * 3. Concatenate all the checksums into one buffer and sha-256 that buffer.
 *
 * The sorting of paths is done using {@link https://tc39.es/ecma262/#sec-islessthan UTF-16 Code Units}.
 *
 * @param files - The files over which to calculate the checksum.
 * @returns A single sha-256 checksum.
 */
export declare function checksumFiles(files: VirtualFile[]): Promise<Uint8Array>;
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