truffle-config.js

require("dotenv").config();
const HDWalletProvider = require("@truffle/hdwallet-provider");

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>
   */
  plugins: ["truffle-plugin-verify"],

  networks: {
    rinkeby: {
      provider: () => {
        return new HDWalletProvider({
          mnemonic: {
            phrase: process.env.MNEMONIC,
          },
          providerOrUrl: process.env.NODE,
        });
      },
      network_id: 4,
      confirmations: 2,
      timeoutBlocks: 200,
      skipDryRun: true,
    },
    kovan: {
      provider: () => {
        return new HDWalletProvider({
          mnemonic: {
            phrase: process.env.MNEMONIC,
          },
          providerOrUrl: process.env.NODE,
        });
      },
      network_id: 42,
      confirmations: 2,
      timeoutBlocks: 200,
      skipDryRun: true,
    },
    mainnet: {
      provider: () => {
        return new HDWalletProvider({
          mnemonic: {
            phrase: process.env.MNEMONIC,
          },
          providerOrUrl: process.env.NODE,
        });
      },
      network_id: 1,
      confirmations: 2,
      timeoutBlocks: 200,
      skipDryRun: true,
    },
    development: {
      host: "localhost",
      port: 8545,
      network_id: "*",
    },
  },

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

  // Configure your compilers
  compilers: {
    solc: {
      version: "0.8.6",
    },
  },
  api_keys: {
    etherscan: process.env.ETH_SCAN_API_KEY,
  },
};