Async await vs promises

asyncawait.js

export const getSubdomains = async name => {
  let namehash = await getNamehash(name)
  let logs = await getENSEvent('NewOwner', {node: namehash}, {fromBlock: 900000, toBlock: 'latest'})
  let labels = await decryptHashes(...logs.map(log => log.args.label))
  let ownerPromises = labels.map(label => getOwner(`${label}.${name}`))

  return Promise.all(ownerPromises).then(owners => {
    let subdomains = labels.map((value, index) => {
      //if(label === false)
      // TODO add check for labels that haven't been found
      return {
        label: value,
        node: name,
        owner: owners[index],
        name: value + '.' + name,
        nodes: []
      }
    })

    return subdomains
  })
}

export const getSubdomains = name => {
  return namehash(name).then(namehash =>
    getENSEvent('NewOwner', {node: namehash}, {fromBlock: 900000, toBlock: 'latest'}).then(logs => {
      let labelsPromise = decryptHashes(...logs.map(log => log.args.label))
      return labelsPromise.then(labels => {
        let ownerPromises = labels.map(label => getOwner(`${label}.${name}`))

        return Promise.all(ownerPromises).then(owners => {
          let subdomains = labels.map((value, index) => {
            //if(label === false)
            // TODO add check for labels that haven't been found
            return {
              label: value,
              node: name,
              owner: owners[index],
              name: value + '.' + name,
              nodes: []
            }
          })

          return subdomains
        })
      })
    })
  )
}