@onsol/tldparser

TLD Parser

A library to parse top-level domain (TLD) names on the Solana blockchain via the Alternative Name Service (ANS) and on EVM-compatible chains (e.g., Monad). This library provides tools to interact with domain names, retrieve ownership details, and manage domain records across supported blockchains.

Overview

The TLD Parser supports two primary implementations:

• Solana (SVM): Parses domains on the Solana Virtual Machine using the ANS system.
• EVM: Parses domains on Ethereum Virtual Machine-compatible chains (currently Monad).
• The library operates on mainnet for both chains, with devnet values available in the constants.ts file for Solana.

Supported Chains

• Solana (SVM)
• Eclipse (SVM)
• Monad Testnet (EVM)

Installation

Add @onsol/tld-parser to package.json or yarn add @onsol/tld-parser

Usage Examples

Below are examples demonstrating key functions for both Solana and EVM implementations. These mirror the test cases provided.

Solana (SVM) Examples

import { Connection, PublicKey } from '@solana/web3.js';
import { TldParser, getDomainKey, Record, NameRecordHeader } from '@onsol/tldparser';

// Constants
const RPC_URL = 'https://mainnet.rpcpool.com/';
const OWNER = new PublicKey('2EGGxj2qbNAJNgLCPKca8sxZYetyTjnoRspTPjzN2D67');
const TLD = 'poor';
const DOMAIN = 'miester.poor';

// Initialize
const connection = new Connection(RPC_URL);
const parser = new TldParser(connection);

// Get all domains owned by a user
const ownerDomains = await parser.getAllUserDomains(OWNER);
// => [PublicKey("6iE5btnTaan1eqfnwChLdVAyFERdn5uCVnp5GiXVg1aB")]

// Get domains for a specific TLD
const tldDomains = await parser.getAllUserDomainsFromTld(OWNER, TLD);
// => [PublicKey("6iE5btnTaan1eqfnwChLdVAyFERdn5uCVnp5GiXVg1aB")]

// Get domain owner
const domainOwner = await parser.getOwnerFromDomainTld(DOMAIN);
// => PublicKey("2EGGxj2qbNAJNgLCPKca8sxZYetyTjnoRspTPjzN2D67")

// Get NameRecordHeader for a domain
const nameRecord = await parser.getNameRecordFromDomainTld(DOMAIN);
// => NameRecordHeader { parentName, owner, nclass, expiresAt, isValid, data }

// Get TLD from parent account
const parentAccount = new PublicKey('8err4ThuTiZo9LbozHAvMrzXUmyPWj9urnMo38vC6FdQ');
const tld = await parser.getTldFromParentAccount(parentAccount);
// => ".poor"

// Reverse lookup domain from name account
const nameAccount = new PublicKey('6iE5btnTaan1eqfnwChLdVAyFERdn5uCVnp5GiXVg1aB');
const parentOwner = new PublicKey('ANgPRMKQHgH5Snx2K3VHCvHqFmrABcjTZUrqZBzDCtfA');
const domainName = await parser.reverseLookupNameAccount(nameAccount, parentOwner);
// => "miester"

// Get DNS record (e.g., IPFS)
const recordPubkey = (await getDomainKey(Record.IPFS + '.' + DOMAIN, true)).pubkey;
const dnsRecord = await NameRecordHeader.fromAccountAddress(connection, recordPubkey);
// => ipfs://...

// Get all TLDs
const allTlds = await getAllTlds(connection);
// => [{ tld: '.bonk', parentAccount: "2j6gC6MMrnw4JJpAKR5FyyUFdxxvdZdG2sg4FrqfyWi5" }, ...]

EVM (Monad) Examples

import { TldParser, NetworkWithRpc } from '@onsol/tldparser';
import { getAddress } from 'ethers';

// Constants
const RPC_URL = 'https://testnet-rpc.monad.xyz';
const PUBLIC_KEY = getAddress('0x94Bfb92da83B27B39370550CA038Af96d182462f');
const settings = new NetworkWithRpc('monad', 10143, RPC_URL);

// Initialize
const parser = new TldParser(settings, 'monad');

// Get all user domains
const allDomains = await parser.getAllUserDomains(PUBLIC_KEY);
// => [NameRecord { domain_name: "miester", tld: ".mon", ... }]

// Get domains for a specific TLD
const tldDomains = await parser.getAllUserDomainsFromTld(PUBLIC_KEY, '.mon');
// => [NameRecord { domain_name: "miester", tld: ".mon", ... }]

// Get domain owner
const owner = await parser.getOwnerFromDomainTld('miester.mon');
// => "0x94Bfb92da83B27B39370550CA038Af96d182462f"

// Get name record
const nameRecord = await parser.getNameRecordFromDomainTld('miester.mon');
// => NameRecord { created_at, domain_name, expires_at, main_domain_address, tld, transferrable }

API Reference

Core Methods (Available on Both Chains)

• getAllUserDomains(userAccount): Retrieves all domains owned by a user.

• getAllUserDomainsFromTld(userAccount, tld): Retrieves domains for a specific TLD.

• getOwnerFromDomainTld(domainTld): Retrieves the owner of a domain.

• getNameRecordFromDomainTld(domainTld): Retrieves detailed record data for a domain.

• getMainDomain(userAddress): Retrieves the user's main domain.

Solana-Specific Methods

• getTldFromParentAccount(parentAccount): Retrieves the TLD from a parent account key.

• reverseLookupNameAccount(nameAccount, parentAccountOwner): Performs a reverse lookup to get the domain name.

• getParsedAllUserDomains(userAccount): Retrieves all domains (including NFTs) with parsed names.

• getParsedAllUserDomainsFromTld(userAccount, tld): Retrieves parsed domains for a specific TLD.

States

Solana: NameRecordHeader

Represents the state of an ANS account on Solana:

• parentName: PublicKey: Parent name account key.
• owner: PublicKey | undefined: Owner of the name account (undefined if expired).
• nclass: PublicKey: Class of the name account (e.g., main domain, DNS) or PublicKey.default.
• expiresAt: Date: Expiration date (0 for non-expirable domains).
• isValid: boolean: Validity status for expirable domains.
• data: Buffer | undefined: Additional data stored in the account.

EVM: NameRecord

Represents domain data on EVM chains:

• created_at: string: Creation timestamp.
• domain_name: string: Domain name (e.g., "miester").
• expires_at: string: Expiration timestamp.
• main_domain_address: string: Owner address.
• tld: string: Top-level domain (e.g., ".mon").
• transferrable: boolean: Whether the domain can be transferred.

Notes

Backwards Compatibility: The TldParser class ensures compatibility with previous versions while supporting multi-chain expansion.