agsola-react-ens-address/src/utils/address.js

React ENS address component

import { getAddress } from 'viem'
import { normalize } from '@ensdomains/eth-ens-namehash'

export const ETH_ADDRESS_TYPE = {
  name: 'name',
  address: 'address',
  error: 'error'
}

export function isAddress(address) {
  try {
    getAddress(address)
  } catch (e) {
    return false
  }
  return true
}

function isEncodedLabelhash(hash) {
  return hash.startsWith('[') && hash.endsWith(']') && hash.length === 66
}


function validateName(name) {
  const nameArray = name.split('.')
  const hasEmptyLabels = nameArray.some((label) => label.length == 0)
  if (hasEmptyLabels) throw new Error('Domain cannot have empty labels')
  const normalizedArray = nameArray.map((label) => {
    if (label === '[root]') {
      return label
    } else {
      return isEncodedLabelhash(label) ? label : normalize(label)
    }
  })
  try {
    return normalizedArray.join('.')
  } catch (e) {
    throw e
  }
}



export function getEthAddressType(address) {
  if (!address) return ETH_ADDRESS_TYPE.error

  if (isAddress(address)) {
    return ETH_ADDRESS_TYPE.address
  }

  try {
    const validated = validateName(address)
    //console.log("validaname", validated)
    return ETH_ADDRESS_TYPE.name
  } catch (e) {
    //console.error("no valida el name", address)
    return ETH_ADDRESS_TYPE.error
  }
}