Listening to Solidity events using web3 1.0.0 beta

ListenToEventsWeb3-1-0-0-beta.js

const Web3 = require('web3') // Works with web3 1.0.0-beta27
const contractArtifact = require('./build/contracts/TutorialToken.json')

const web3 = new Web3()
const providerUrl = 'ws://localhost:8545' // requires # https://github.com/trufflesuite/ganache-cli/releases/tag/v7.0.0-beta.0 or https://github.com/trufflesuite/ganache/releases/tag/v1.1.0-beta.0
const provider = new Web3.providers.WebsocketProvider(providerUrl)
web3.setProvider(provider)

web3.eth.net.getId()
  .then(networkId => {
    const contractAddr = contractArtifact.networks[networkId].address
    const TutorialToken = new web3.eth.Contract(contractArtifact.abi, contractAddr)
    TutorialToken.events.Transfer({fromBlock: 0},  function(error, event){ console.log(error) })
      .on('data', (log) => {
        let { returnValues: { from, to, value }, blockNumber } = log
        console.log(`----BlockNumber (${blockNumber})----`)
        console.log(`from = ${from}`)
        console.log(`to = ${to}`)
        console.log(`value = ${value}`)
        console.log(`----BlockNumber (${blockNumber})----`)
      })
      .on('changed', (log) => {
        console.log(`Changed: ${log}`)
      })
      .on('error', (log) => {
        console.log(`error:  ${log}`)
      })
  })