Refactor the getWeb3, getAccount and getBalance functions

App.js

getWeb3 = () => new Promise((resolve, reject) => {

    try{

      if(typeof window.web3 !== undefined){

        resolve(new Web3(Web3.givenProvider))

      }else{
        this.setState({errorMsg:'web3 not found'})
      }
    }catch(error){
      
      this.setState({errorMsg:'An error occurred trying to connect to web3'})
    }

  })

  getAccount = async (web3) => {
    //Get logged in MetaMask ETH address
    const accounts = await web3.eth.getAccounts()
    if(accounts.length < 1){
      
      this.setState({loading: false,errorMsg:'Could not connect to Metamask. Please unlock your metamask'})

    }else{

      this.setState({loading: false, account:accounts[0], errorMsg:''})
      await this.getBalance(web3, accounts)

    }

  }

  getBalance = async (web3, accounts) => {

    //Instantiate the polyToken smart contract
    const polyFaucet = new web3.eth.Contract(PolyTokenFaucet.abi, '0xB06d72a24df50D4E2cAC133B320c5E7DE3ef94cB')
    //Get account's POLY balance
    const polyBalance = await polyFaucet.methods.balanceOf(accounts[0]).call({ from: accounts[0] })
    //We use web3.utils.fromWei to display the units of the balance from wei to ether
    this.setState({ loading: false, errorMsg:'', web3: web3, account: accounts[0], balance: web3.utils.fromWei(polyBalance, "ether"), polyFaucet: polyFaucet })

  }