truffle-config.js

/**
 * 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 PRIVATE_KEY - 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');
require('dotenv').config();

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: {
    mainnet: {
      provider: () => new HDWalletProvider(process.env.PRIVATE_KEY, `https://mainnet.infura.io/v3/${process.env.INFURA_API_KEY}`),
      network_id: 1,
    },
    ropsten: {
      provider: () => new HDWalletProvider(process.env.PRIVATE_KEY, `https://ropsten.infura.io/v3/${process.env.INFURA_API_KEY}`),
      network_id: 3,
    },
    rinkeby: {
      provider: () => new HDWalletProvider(process.env.PRIVATE_KEY, `https://rinkeby.infura.io/v3/${process.env.INFURA_API_KEY}`),
      network_id: 4,
    },
    kovan: {
      provider: () => new HDWalletProvider(process.env.PRIVATE_KEY, `https://kovan.infura.io/v3/${process.env.INFURA_API_KEY}`),
      network_id: 42,
    },
    // bsc
    bsc: {
      provider: () => new HDWalletProvider(process.env.PRIVATE_KEY, `https://bsc-dataseed.binance.org`),
      network_id: 56,
    },
    testnet: {
      provider: () => new HDWalletProvider(process.env.PRIVATE_KEY, `https://data-seed-prebsc-1-s1.binance.org:8545`),
      network_id: 97,
      timeoutBlocks: 200,
    },
    // selendra
    indraTest: {
      provider: () => new HDWalletProvider(process.env.PRIVATE_KEY, `https://indranet-rpc.selendra.org/`),
      network_id: 222,
      timeoutBlocks: 300,
      skipDryRun: true
    }
  },

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

  // Configure your compilers
  compilers: {
    solc: {
      version: "0.7.6",    // 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: true,
          runs: 200
        },
        //  evmVersion: "byzantium"
      }
    }
  },

  // Truffle DB is currently disabled by default; to enable it, change enabled: false to enabled: true
  //
  // Note: if you migrated your contracts prior to enabling this field in your Truffle project and want
  // those previously migrated contracts available in the .db directory, you will need to run the following:
  // $ truffle migrate --reset --compile-all

  db: {
    enabled: false
  },

  plugins: [
    'truffle-plugin-verify',
    "truffle-contract-size"
  ],

  api_keys: {
    bscscan: process.env.BSC_API_KEY,
    etherscan: process.env.ETH_API_KEY
  }
};