truffle-config.js

require('babel-register')
require('babel-polyfill')
require('dotenv').config()

const HDWalletProvider = require('@truffle/hdwallet-provider')
const privateKeys = process.env.PRIVATE_KEYS || ""

module.exports = {
  networks: {
    ganache: {
     host: "127.0.0.1",     // Localhost (default: none)
     port: 7545,            // Standard Ethereum port (default: none)
     network_id: "*",       // Any network (default: none)
    },
    development: {
      host: "127.0.0.1",     // Localhost (default: none)
      port: 8546,            // Standard Ethereum port (default: none)
      network_id: "*",       // Any network (default: none)
    },
    kovan: {
      provider: function() {
        return new HDWalletProvider(
          privateKeys.split(','),
          `https://kovan.infura.io/v3/${process.env.INFURA_API_KEY}`
        )
      },
      gas: 116625,
      gasPrice: 10000000000,
      network_id: 42,
      confirmations: 2,    // # of confs to wait between deployments. (default: 0)
      timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
      skipDryRun: true     // Skip dry run before migrations? (default: false for public nets )
    },
    rinkeby: {
      provider: function() {
        return new HDWalletProvider(
          privateKeys.split(','),
          `https://rinkeby.infura.io/v3/${process.env.INFURA_API_KEY}`
        )
      },
      gas: 116625,
      gasPrice: 10000000000,
      network_id: 4,
      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 )
    },
    goerli: {
      provider: function() {
        return new HDWalletProvider(
          privateKeys.split(','),
          `https://goerli.infura.io/v3/${process.env.INFURA_API_KEY}`
        )
      },
      // gas: 29999972,
      // gasPrice: 100000000,
      network_id: 5,
      // 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 )
    }
  },
  contracts_directory: './src/contracts/',
  contracts_build_directory: './src/abis/',
  compilers: {
    solc: {
      version: "0.8.14",      // Fetch exact version from solc-bin (default: truffle's version)
      optimizer: {
        enabled: true,
        runs: 200
      }
    }
  }
};