truffle-config.js

require("dotenv").config();

require("babel-register")({
  ignore: /node_modules\/(?!zeppelin-solidity)/
});
require("babel-polyfill");

const HDWalletProvider = require("truffle-hdwallet-provider");
const path = require("path");

module.exports = {
  // build contracts in client folder
  contracts_build_directory: path.join(__dirname, "client/src/contracts"),

  networks: {
    develop: {
      provider() {
        return new HDWalletProvider(
          process.env.TRUFFLE_MNEMONIC,
          "http://localhost:9545/"
        );
      },
      host: "localhost",
      port: 9545,
      network_id: 4447
    },
    ganache: {
      provider() {
        return new HDWalletProvider(
          process.env.GANACHE_MNEMONIC,
          "http://localhost:7545"
        );
      },
      host: "localhost",
      port: 7545,
      network_id: 5777
      // gas: 1000000000,
      // gasPrice: 1000000000
    },
    mainnet: {
      provider() {
        return new HDWalletProvider(
          process.env.TESTNET_MNEMONIC,
          "https://mainnet.infura.io/v3/" + process.env.INFURA_API_KEY,
          1
        );
      },
      network_id: 1
      // gas: 5561260
    },
    kovan: {
      provider() {
        return new HDWalletProvider(
          process.env.TESTNET_MNEMONIC,
          "https://kovan.infura.io/v3/" + process.env.INFURA_API_KEY,
          1
        );
      },
      network_id: 42
      // gas: 5561260
    },
    rinkeby: {
      provider() {
        return new HDWalletProvider(
          process.env.TESTNET_MNEMONIC,
          "https://rinkeby.infura.io/v3/" + process.env.INFURA_API_KEY
        );
      },
      network_id: 4,
      // gas: 4700000,
      gasPrice: 200000000000 // 200 GWEI
    },
    ropsten: {
      provider() {
        return new HDWalletProvider(
          process.env.TESTNET_MNEMONIC,
          "https://ropsten.infura.io/v3/" + process.env.INFURA_API_KEY
        );
      },
      network_id: 3,
      gas: 4700000
    },
    sokol: {
      provider() {
        return new HDWalletProvider(
          process.env.TESTNET_MNEMONIC,
          "https://sokol.poa.network"
        );
      },
      gasPrice: 1000000000,
      network_id: 77
    },
    poa: {
      provider() {
        return new HDWalletProvider(
          process.env.TESTNET_MNEMONIC,
          "https://core.poa.network"
        );
      },
      gasPrice: 1000000000,
      network_id: 99
    }
  },

  // Set default mocha options here, use special reporters etc.
  mocha: {
    reporter: "eth-gas-reporter",
    reporterOptions: {
      currency: "USD",
      gasPrice: 1,
      showTimeSpent: true
    }
  },

  // Configure your compilers
  compilers: {
    solc: {
      version: "0.5.0",
      settings: {
        optimizer: {
          enabled: true,
          runs: 100
        }
      }
    }
  }
};