const Coin = artifacts.require('BECoin'); module.exports = async function (deployer, network, accounts) { const account = accounts[0]; console.log('current account: ', account); await deployer.deploy(Coin); const coinInstance = await Coin.deployed(); if(coinInstance) { // tmpData.writeKeyVal('coin', coinInstance.address); console.log("BECoin successfully deployed.") } };