ens.ts•1.58 kB
import { normalize } from 'viem/ens';
import { getPublicClient } from './clients.js';
import { type Address } from 'viem';
/**
* Resolves an ENS name to an Ethereum address or returns the original address if it's already valid
* @param addressOrEns An Ethereum address or ENS name
* @param network The network to use for ENS resolution (defaults to Ethereum mainnet)
* @returns The resolved Ethereum address
*/
export async function resolveAddress(
addressOrEns: string,
network = 'ethereum'
): Promise<Address> {
// If it's already a valid Ethereum address (0x followed by 40 hex chars), return it
if (/^0x[a-fA-F0-9]{40}$/.test(addressOrEns)) {
return addressOrEns as Address;
}
// If it looks like an ENS name (contains a dot), try to resolve it
if (addressOrEns.includes('.')) {
try {
// Normalize the ENS name first
const normalizedEns = normalize(addressOrEns);
// Get the public client for the network
const publicClient = getPublicClient(network);
// Resolve the ENS name to an address
const address = await publicClient.getEnsAddress({
name: normalizedEns,
});
if (!address) {
throw new Error(`ENS name ${addressOrEns} could not be resolved to an address`);
}
return address;
} catch (error: any) {
throw new Error(`Failed to resolve ENS name ${addressOrEns}: ${error.message}`);
}
}
// If it's neither a valid address nor an ENS name, throw an error
throw new Error(`Invalid address or ENS name: ${addressOrEns}`);
}