hardhat.config.ts

import { config as dotEnvConfig } from 'dotenv';
dotEnvConfig();

import { HardhatUserConfig } from 'hardhat/types';

import '@nomiclabs/hardhat-ethers';
import '@nomiclabs/hardhat-waffle';
import 'solidity-coverage';
import 'hardhat-gas-reporter';

const INFURA_API_KEY = process.env.INFURA_API_KEY || '';
const RINKEBY_PRIVATE_KEY = process.env.RINKEBY_PRIVATE_KEY! || '0xc87509a1c067bbde78beb793e6fa76530b6382a4c0241e5e4a9ec0a0f44dc0d3'; // well known private key

const config: HardhatUserConfig = {
    defaultNetwork: 'hardhat',
    solidity: {
        version: '0.8.15',
        settings: {
            evmVersion: 'london',
            optimizer: {
                enabled: true,
                runs: 200,
                details: {
                    peephole: true,
                    inliner: true,
                    jumpdestRemover: true,
                    orderLiterals: true,
                    deduplicate: true,
                    cse: true,
                    constantOptimizer: true,
                    yul: true,
                    yulDetails: {
                        stackAllocation: true,
                    },
                },
            },
            metadata: {
                bytecodeHash: 'none',
            },
        },
    },
    networks: {
        hardhat: {},
        localhost: {
            url: process.env.RPC_SERVER ?? 'http://127.0.0.1:7545',
        },
        rinkeby: {
            url: `https://rinkeby.infura.io/v3/${INFURA_API_KEY}`,
            accounts: [RINKEBY_PRIVATE_KEY],
        },
        coverage: {
            url: 'http://127.0.0.1:8555', // Coverage launches its own ganache-cli client
        },
    },
};

export default config;