truffle-config.js

require('ts-node/register')
// OPTIONAL: Allows the use of tsconfig path mappings with ts-node
//require('tsconfig-paths/register')

require('dotenv').config();
const Web3 = require("web3");
const web3 = new Web3();


let HDWalletProvider = require("@truffle/hdwallet-provider");

module.exports = {
  networks: {
      mainnet: {
            provider: () => new HDWalletProvider(process.env.KEY, process.env.PROVIDER),
            network_id: 1,       // mainnet
            gas: 2000000,
            gasPrice: 60000000000,  // check https://ethgasstation.info/
            confirmations: 2,    // # of confs to wait between deployments. (default: 0)
            timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
            skipDryRun: false     // Skip dry run before migrations? (default: false for public nets )
      },
      kovan: {
          provider: function() {
              return new HDWalletProvider(process.env.KEY, process.env.KOVANPROVIDER);
          },
          network_id: 42,
          networkCheckTimeout: 100000000
      },
      coverage: {
          host: '127.0.0.1',
          port: 8555,
          network_id: "*",
      }
  },
  plugins: ["solidity-coverage"],
  compilers: {
    solc: {
      version: "0.5.16",
      //docker: true,
      settings: {
        optimizer: {
          enabled: true,
          runs: 200
        },
      }
    }
  }
};