truffle-config.js

require('@babel/polyfill');

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

function getProvider(keysFile, rpcUrl) {
  let keys = {};
  try {
    keys = require(keysFile);
    return new HDWalletProvider(keys.privKey, rpcUrl);
  } catch (err) {
    console.log(err);
    console.log('could not find ' + keysFile);
  }
}

module.exports = {
  solc: {
    optimizer: {
      enabled: true,
      runs: 200
    }
  },

  compilers: {
    solc: {
      version: '0.5.15'
    }
  },

  networks: {
    local: {
      host: 'localhost',
      port: 8545,
      network_id: '85458545'
    },

    ganache: {
      host: 'localhost',
      port: 7545,
      network_id: '5777'
    },

    kovan_infura: {
      provider: () =>
        new HDWalletProvider(
          process.env.MNENOMIC,
          'https://kovan.infura.io/v3/46919ce6487b4a8b83d0a870ad59588c'
        ),
      network_id: 42,
      gas: 6000000,
      gasPrice: 10000000000
    },
    rinkeby_infura: {
      provider: () =>
        new HDWalletProvider(
          process.env.MNENOMIC,
          'https://rinkeby.infura.io/v3/46919ce6487b4a8b83d0a870ad59588c'
        ),
      network_id: 4
    },

    mainnet_infura: {
      provider: () =>
        new HDWalletProvider(
          process.env.MNENOMIC,
          'https://mainnet.infura.io/v3/46919ce6487b4a8b83d0a870ad59588c'
        ),
      network_id: 1,
      gas: 0x2fefd5
    }
  },

  mocha: {
    useColors: true
    // Crashing since version update - no solution yet
    // reporter: 'eth-gas-reporter',
    // reporterOptions : {
    //   currency: 'CHF',
    //   gasPrice: 21
    // }
  }
};