truffle-config.js

/*
 * NB: since truffle-hdwallet-provider 0.0.5 you must wrap HDWallet providers in a 
 * function when declaring them. Failure to do so will cause commands to hang. ex:
 * ```
 * mainnet: {
 *     provider: function() { 
 *       return new HDWalletProvider(mnemonic, 'https://mainnet.infura.io/<infura-key>') 
 *     },
 *     network_id: '1',
 *     gas: 4500000,
 *     gasPrice: 10000000000,
 *   },
 */

module.exports = {
  // See <http://truffleframework.com/docs/advanced/configuration>
  // to customize your Truffle configuration!
  
    plugins: ["solidity-coverage"],

    // Set default mocha options here, use special reporters etc.
    mocha: {
        reporter: 'eth-gas-reporter'
        // timeout: 100000
    },

    // Configure your compilers
    compilers: {
        solc: {
            version: "0.6.12",
            settings: {
                optimizer: {
                    enabled: false,
                    runs: 200
                },
                evmVersion: "constantinople"
            }
        }
    }
};