truffle-config.js

const HDWalletProvider = require('@truffle/hdwallet-provider')
const Web3 = require('web3');
const web3 = new Web3();
const { mnemonic, infuraKey, etherscan } = require('./config/deploy_data')

module.exports = {
  compilers: {
    solc: {
      version: '0.5.16'
    }
  },
  plugins: [
    'truffle-plugin-verify'
  ],
  api_keys: {
    etherscan,
  },
  // Uncommenting the defaults below
  // provides for an easier quick-start with Ganache.
  // You can also follow this format for other networks;
  // see <http://truffleframework.com/docs/advanced/configuration>
  // for more details on how to specify configuration options!
  //
  networks: {
    development: {
    host: "127.0.0.1",
      port: 7545,
      network_id: "*"
    },
    test: {
      host: "127.0.0.1",
      port: 7545,
      network_id: "*"
    },
     ropsten: {
       provider: () => new HDWalletProvider(mnemonic, `https://ropsten.infura.io/v3/${infuraKey}`),
       network_id: 3,       // Ropsten's id
       gas: 5500000,        // Ropsten has a lower block limit than mainnet
       confirmations: 2,    // # of confs to wait between deployments. (default: 0)
       timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
       skipDryRun: true,
     },
    rinkeby: {
       provider: () => new HDWalletProvider(mnemonic, `https://rinkeby.infura.io/v3/${infuraKey}`),
       network_id: 4,       // rinkeby 's id
       gas: 5500000,        // Ropsten has a lower block limit than mainnet
       confirmations: 2,    // # of confs to wait between deployments. (default: 0)
       timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
       skipDryRun: true,
     },
     mainnet: {
      provider: () => new HDWalletProvider(mnemonic, `https://mainnet.infura.io/v3/${infuraKey}`),
      network_id: 1,       // mainnet's id
      gas: 5500000,        // mainnet has a lower block limit than mainnet
      gasPrice: web3.utils.toWei('45', 'gwei'),
      confirmations: 2,    // # of confs to wait between deployments. (default: 0)
      timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
      skipDryRun: true,
    },
  }
};