truffle-config.js

require('babel-register');
require('babel-polyfill');
require('dotenv').config();
//const HDWalletProvider = require('truffle-hdwallet-provider-privkey');
const HDWalletProvider = require("@truffle/hdwallet-provider");
const privateKeys = process.env.PRIVATE_KEYS || ""
const { mnemonic, BSCSCANAPIKEY} = require('./env.json');

module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",
      port: 7545,
      network_id: "*"
    },
  bsctest: {
      provider: function() {
        return new HDWalletProvider(
          privateKeys.split(','), // Array of account private keys
          `http://149.56.22.202:8545`// Url to an BSC Merge Testnet Node
          //`https://kovan.infura.io/v3/${process.env.INFURA_API_KEY}`// Url to an Ethereum Node
        )
      },
      gas: 5000000,
      gasPrice: 25000000000,
      network_id: 97
    },
  bscmainnet: {
      provider: function() {
        return new HDWalletProvider(
          privateKeys.split(','), // Array of account private keys
          `http://5.39.71.182:8545`// Url to an BSC Merge Testnet Node
          //`https://kovan.infura.io/v3/${process.env.INFURA_API_KEY}`// Url to an Ethereum Node
        )
      },
      gas: 5000000,
      gasPrice: 25000000000,
      network_id: 56
    },
    rinkeby: {
      provider: function() {
        return new HDWalletProvider(
          privateKeys.split(','), // Array of account private keys
          `https://rinkeby.infura.io/v3/${process.env.INFURA_API_KEY}`// Url to an Ethereum Node
        )
      },
      gas: 5000000,
      gasPrice: 25000000000,
      network_id: 4
    }
  },
  plugins: [
    'truffle-plugin-verify'
  ],
  api_keys: {
    bscscan: BSCSCANAPIKEY
  },
  contracts_directory: './src/contracts/',
  contracts_build_directory: './src/abis/',
  compilers: {
    solc: {
      version: "0.8.2",
      optimizer: {
        enabled: true,
        runs: 200
      }
    }
  }
};