truffle-config.js

const HDWalletProvider = require('@truffle/hdwallet-provider'),
      helper= require("./scripts/helper");
/*
 * Use this file to configure your truffle project. It's seeded with some
 * common settings for different networks and features like migrations,
 * compilation and testing. Uncomment the ones you need or modify
 * them to suit your project as necessary.
 *
 * More information about configuration can be found at:
 *
 * trufflesuite.com/docs/advanced/configuration
 *
 * To deploy via Infura you'll need a wallet provider (like @truffle/hdwallet-provider)
 * to sign your transactions before they're sent to a remote public node. Infura accounts
 * are available for free at: infura.io/register.
 *
 * You'll also need a mnemonic - the twelve word phrase the wallet uses to generate
 * public/private key pairs. If you're publishing your code to GitHub make sure you load this
 * phrase from a file you've .gitignored so it doesn't accidentally become public.
 *
 */

//const HDWalletProvider = require('@truffle/hdwallet-provider');
// let passphrase = prompt("Please enter passphrase of account ");


// const keyStore = fs.readFileSync("./AccountKeyStore.json"),
// owner = web3.eth.accounts.decrypt(JSON.parse(keyStore), passphrase);
const owner = helper.getWallet(),
      sPrivateKey = owner.privateKey;


module.exports = {
  /**
   * Networks define how you connect to your ethereum client and let you set the
   * defaults web3 uses to send transactions. If you don't specify one truffle
   * will spin up a development blockchain for you on port 9545 when you
   * run `develop` or `test`. You can ask a truffle command to use a specific
   * network from the command line, e.g
   *
   * $ truffle test --network <network-name>
   */

  networks: {
    // Useful for testing. The `development` name is special - truffle uses it by default
    // if it's defined here and no other network is specified at the command line.
    // You should run a client (like ganache-cli, geth or parity) in a separate terminal
    // tab if you use this network and you must also set the `host`, `port` and `network_id`
    // options below to some value.
    //
    // development: {
    //  host: "127.0.0.1",     // Localhost (default: none)
    //  port: 7545,            // Standard Ethereum port (default: none)
    //  network_id: "5777",       // Any network (default: none)
    // },
    // Another network with more advanced options...
    // advanced: {
    // port: 8777,             // Custom port
    // network_id: 1342,       // Custom network
    // gas: 8500000,           // Gas sent with each transaction (default: ~6700000)
    // gasPrice: 20000000000,  // 20 gwei (in wei) (default: 100 gwei)
    // from: <address>,        // Account to send txs from (default: accounts[0])
    // websockets: true        // Enable EventEmitter interface for web3 (default: false)
    // },
    // Useful for deploying to a public network.
    // NB: It's important to wrap the provider as a function.
    
    ropsten: {
      provider: () => new HDWalletProvider(
        {
          privateKeys: [sPrivateKey], 
          providerOrUrl: 'https://ropsten.infura.io/v3/49c09db3360d4665a9c0fdbd99b11bb8',
          addressIndex: 0
        }
      ),
      networkCheckTimeout: 1000000,
      network_id: 3, //rinkeby
      skipDryRun: true
    },
    bscTestnet: {
      provider: () => new HDWalletProvider(
        {
          privateKeys: [sPrivateKey], 
          providerOrUrl: 'https://data-seed-prebsc-1-s3.binance.org:8545/'
        }
      ),
      network_id: 97,
      skipDryRun: true
    },

  },

  // Set default mocha options here, use special reporters etc.
  mocha: {
    // timeout: 100000
  },

  // Configure your compilers
  compilers: {
    solc: {
      version: "0.8.0",    // Fetch exact version from solc-bin (default: truffle's version)
      // docker: true,        // Use "0.5.1" you've installed locally with docker (default: false)
      // settings: {          // See the solidity docs for advice about optimization and evmVersion
      //  optimizer: {
      //    enabled: false,
      //    runs: 200
      //  },
      //  evmVersion: "byzantium"
      // }
    }
  }
};