truffle-config.js

const HDWalletProvider = require('@truffle/hdwallet-provider')

module.exports = {
  networks: {
    development: {
      host: 'localhost',
      port: 7545,
      network_id: '*',
    },
    live: {
      host: 'localhost',
      port: 8545,
      network_id: '1',
    },
    ganache: {
      host: 'localhost',
      port: 7545,
      network_id: '4447',
      gas: 6721975,
    },
    devgeth: {
      host: 'localhost',
      port: 7545,
      network_id: '1337',
      gas: 4401670,
    },
    rinkeby: {
      provider: () =>
        new HDWalletProvider(
          process.env.RINKEBY_UD_PRIVATE_KEY,
          `https://rinkeby.infura.io/v3/${process.env.INFURA_TEST_KEY}`,
        ),
      network_id: '4',
    },
    coverage: {
      host: '127.0.0.1',
      port: 7555,
      network_id: '*',
      gas: 0xfffffffffff,
      gasPrice: 0x01,
    },
  },
  compilers: {
    solc: {
      version: '0.5.12',
      optimizer: {
        enabled: true,
        runs: 200,
      },
    },
  },
  contracts_build_directory: 'truffle-artifacts',
  plugins: [
    'solidity-coverage',
    'truffle-plugin-verify',
  ],
  mocha: {
    reporter: 'eth-gas-reporter',
    reporterOptions: {
      currency: 'USD',
      excludeContracts: ['Migrations', 'Simple'],
      showMethodSig: true,
      showTimeSpent: true,
    },
  },
  api_keys: {
    etherscan: process.env.ETHERSCAN_API_KEY
  },
}