import { type Slice } from 'ton-core';
import { type BuilderWriter } from './writer';
export type OnChainContent = {
    hashes: Map<bigint, string>;
};
export declare const ON_CHAIN_FIRST_BYTE = 0;
/**
 * @see https://github.com/ton-blockchain/TEPs/blob/master/text/0064-token-data-standard.md#nft-metadata-attributes
 */
export declare const NFT_METADATA_ATTRIBUTES: string[];
export declare function storeOnChainContent(source: OnChainContent): BuilderWriter;
export declare function storeOnChainDictionary(source: Map<bigint, string>): BuilderWriter;
/**
 * Convert string attributes keys to SHA256 bigint keys
 * @param attributes Example:
 *   Map(1) { 'uri' => 'abc' }
 * @return Example:
 *   Map(1) { 51065135818459385347574250312853146822620586594996463797054414300406918686668n => 'abc' }
 */
export declare function attributesToHashes(attributes: Map<string, string>): Map<bigint, string>;
/**
 * Convert string to SHA256 bigint
 * @param string Any string e.g. `name`
 * @return SHA256 hash of string e.g. `59089242681608890680090686026688704441792375738894456860693970539822503415433n`
 */
export declare function stringToHash(string: string): bigint;
export declare function loadOnChainContent(slice: Slice): OnChainContent;
export declare function loadOnChainDictionary(slice: Slice): Map<bigint, string>;
/**
 * Read first prefix byte. If prefix is `0x00` load snake string. If prefix is `0x01` load chunked string
 * snake#00 data:(SnakeData ~n) = ContentData;
 * chunks#01 data:ChunkedData = ContentData;
 */
export declare function loadContentData(slice: Slice): string;
/**
 * Convert replace SHA256 bigint keys to string attributes
 * @param hashes Example:
 *   Map(1) { 51065135818459385347574250312853146822620586594996463797054414300406918686668n => 'abc' }
 * @param attributes Example:
 *   [ 'uri' ]
 * @return Example:
 *   Map(1) { 'uri' => 'abc' }
 */
export declare function hashesToAttributes(hashes: Map<bigint, string>, attributes?: string[]): Map<string, string>;
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