truffle-config.js

/**
 * Use this file to configure your truffle project. his
 */

// const HDWalletProvider = require('@truffle/hdwallet-provider');
// const infuraKey = "fj4jll3k.....";
//
// const fs = require('fs');
// const mnemonic = fs.readFileSync(".secret").toString().trim();

module.exports = {


  networks: {

    development: {
     host: "127.0.0.1",     // Localhost (default: none)
     port: 8545,            // Standard Ethereum port (default: none)
     network_id: "*",       // Any network (default: none)
    },


    // Useful for deploying to a public network.
    // NB: It's important to wrap the provider as a function.
    // ropsten: {
      // provider: () => new HDWalletProvider(mnemonic, `https://ropsten.infura.io/v3/YOUR-PROJECT-ID`),
      // 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: true     // Skip dry run before migrations? (default: false for public nets )
    // }
  },

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

  // Configure your compilers
  // compilers: {
  //   solc: {
  //     version: "0.5.1",    // Fetch exact version from solc-bin (default: truffle's version)
  //     docker: false,        // 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"
  //     }
  //   }
  // }
}