truffle-config.js

require('babel-register');
require('babel-polyfill');

const HDWalletProvider = require('@truffle/hdwallet-provider');
const secrets = require("./secrets.json")

module.exports = {
  networks: {
    // locally running network (e.g. via Ganache)
    development: {
      host: "127.0.0.1",
      port: 7545,
      network_id: "*" // Match any network id
    },
    // public networks
    ropsten: {
      provider: () => new HDWalletProvider(secrets.mnemonic, secrets.endpoint),
      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)
    }
  },
  contracts_directory: './src/contracts/',
  contracts_build_directory: './src/abis/',
  compilers: {
    solc: {
      version: "^0.8.0",
      optimizer: {
        enabled: true,
        runs: 200
      }
    }
  }
}