truffle-config.js

require('dotenv').config();

const HDWalletProvider = require('truffle-hdwallet-provider');

const providerWithMnemonic = (mnemonic, rpcEndpoint) =>
  new HDWalletProvider(mnemonic, rpcEndpoint);

const infuraProvider = network => {
  process.env.SOLIDITY_COVERAGE ? undefined : providerWithMnemonic(
    process.env.MNEMONIC || '',
    `https://${network}.infura.io/${process.env.INFURA_API_KEY}`
  );
}


module.exports = {
  networks: {
    development: {
      host: 'localhost',
      port: 8545,
      network_id: '*', // eslint-disable-line camelcase
    },
    ropsten: {
      provider: infuraProvider('ropsten'),
      network_id: 3, // eslint-disable-line camelcase
    },
    rinkeby: {
      provider: infuraProvider('rinkeby'),
      network_id: 4, // eslint-disable-line camelcase
    },
    coverage: {
      host: 'localhost',
      network_id: '*', // eslint-disable-line camelcase
      port: 8555,
      gas: 0xfffffffffff,
      gasPrice: 0x01,
    },
    ganache: {
      host: 'localhost',
      port: 8545,
      network_id: '*', // eslint-disable-line camelcase
    },
  },
};