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:
 *
 * truffleframework.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 Web3 = require("web3");
const web3 = new Web3();
const HDWalletProvider = require('truffle-hdwallet-provider');
require('dotenv').config();
const infuraKey = process.env.INFURAKEY;

const fs = require('fs');
const mnemonic = fs.readFileSync(".secret").toString().trim();
const gasapi = "https://api.etherscan.io/api?module=gastracker&action=gasoracle&apikey=YourApiKeyToken";

const LedgerWalletProvider = require('@umaprotocol/truffle-ledger-provider');
 
const ledgerOptions = {
      networkId: 1, // mainnet
      path: "44'/60'/0'/0/0", // ledger default derivation path
      askConfirm: true,
      accountsLength: 1,
      accountsOffset: 0
};
 

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: "192.168.68.58",     // Localhost (default: none)
      port: 7545,            // Standard Ethereum port (default: none)
      network_id: "*",       // Any network (default: none)
      networkCheckTimeout: 1000
     },

    main: {
       provider: () => new LedgerWalletProvider(ledgerOptions, "https://mainnet.infura.io/v3/" + infuraKey),
       network_id: 1,       // mainnet
       gasPrice: web3.utils.toWei('250', 'gwei'), 
       confirmations: 2,    // # of confs to wait between deployments. (default: 0)
       timeoutBlocks: 1000,  // # of blocks before a deployment times out  (minimum/default: 50)
       networkCheckTimeout: 5000,
       skipDryRun: false    // Skip dry run before migrations? (default: false for public nets )
     },
    // 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 LedgerWalletProvider(ledgerOptions, "https://ropsten.infura.io/v3/" + infuraKey),
       provider: () => new HDWalletProvider(mnemonic, "https://ropsten.infura.io/v3/" + infuraKey),
       network_id: 3,       // Ropsten's id
       //gas: 5500000,        // Ropsten has a lower block limit than mainnet
       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 )
     },

    // Useful for private networks
    // private: {
      // provider: () => new HDWalletProvider(mnemonic, `https://network.io`),
      // network_id: 2111,   // This network is yours, in the cloud.
      // production: true    // Treats this network as if it was a public net. (default: false)
    // }
  },

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

  // Configure your compilers
  compilers: {
    solc: {
       version: "0.5.16",    // 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"
       }
    }
  },
}