truffle-config.js

require('@babel/register');
require('@babel/polyfill');

/**
 * 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');
// const infuraKey = "fj4jll3k.....";
//
// const fs = require('fs');
// const mnemonic = fs.readFileSync(".secret").toString().trim();
require('dotenv').config();
const HDWalletProvider = require('truffle-hdwallet-provider');
const privateKey = process.env.privateKey;
const mnemonic = process.env.mnemonic;
const infuraKey = process.env.infuraKey;
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: {

    bsc_test: {
      provider: function () {
        let privateKeys = [privateKey];
        return new HDWalletProvider(privateKeys, "https://data-seed-prebsc-1-s1.binance.org:8545")
      },
      network_id: 97,
      gas: 30000000, //  BSC Testnet gas limit
      confirmations: 10,
      timeoutBlocks: 200,
      skipDryRun: true
    },
    // bsc_live: {
    //   provider: () => new HDWalletProvider(mnemonic, `https://bsc-dataseed1.binance.org`),
    //   network_id: 56,
    //   confirmations: 10,
    //   timeoutBlocks: 200,
    //   skipDryRun: true
    // },
  },

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

  // Configure your compilers
  compilers: {
    solc: {
      version: "^0.6.12",    // 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"
      evmVersion: "istanbul"
      // }
    },
  },
};