truffle-config.js

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

module.exports = {
  contracts_directory: "./ethereum",
  networks: {
    development: {
      host: "127.0.0.1",     // Localhost (default: none)
      port: 7545,            // Standard Ethereum port (default: none)
      network_id: "*",       // Any network (default: none)
    },
    testnet: {
      host: "localhost",
      provider: () => new HDWalletProvider(process.env.testnet, "https://rinkeby.infura.io/v3/" + process.env.INFURA_API_KEY),
      network_id: 4,
      gas: 6700000,
      gasPrice: 10000000000
    },
    testnetsidechain: {
      host: "testnetsidechain.exokit.org",
      provider: () => new HDWalletProvider(process.env.mainnetsidechain, "http://testnetsidechain.exokit.org"),
      port: 8486,
      network_id: "1337",
    },
    testnetpolygon: {
      provider: () => new HDWalletProvider(process.env.testnetpolygon, `https://matic-mumbai.chainstacklabs.com`),
      network_id: 80001,
      confirmations: 1,
      timeoutBlocks: 4500,
      networkCheckTimeout: 320000,
      skipDryRun: true
    },
    mainnet: {
      host: "", // TODO: Add me
      provider: () => new HDWalletProvider(process.env.mainnet, ""),
      port: 8485,
      network_id: "1338",
      networkCheckTimeout: 10000,
        },
    mainnetsidechain: {
      host: "mainnetsidechain.exokit.org",
      provider: () => new HDWalletProvider(process.env.mainnetsidechain, "http://mainnetsidechain.exokit.org"),
      port: 8485,
      network_id: "1338",
      networkCheckTimeout: 10000,
    },
    polygon: {
      provider: () => new HDWalletProvider(process.env.polygon, `https://polygon-rpc.com`),
      network_id: 137,
      confirmations: 2,
      timeoutBlocks: 500,
      networkCheckTimeout: 10000,
      skipDryRun: false
    }
  },

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

  // Configure your compilers
  compilers: {
    solc: {
      version: "0.8.7",
      settings: {
        optimizer: {
          enabled: true,
          runs: 15000
        }
      }
    }
  },
  plugins: ['truffle-plugin-verify'],
  api_keys: {
    polygonscan: '16X7NBNHE9FF11P6K11HIIBBMF8KPVXW5J'
  }
}