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hardhat.config.ts
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import '@nomicfoundation/hardhat-toolbox'
import '@nomiclabs/hardhat-etherscan'
import { config as dotenvConfig } from 'dotenv'
import type { HardhatUserConfig } from 'hardhat/config'
import type { NetworkUserConfig } from 'hardhat/types'
import { resolve } from 'path'
import './tasks/accounts'
import './tasks/deploy'
const dotenvConfigPath: string = process.env.DOTENV_CONFIG_PATH || './.env'
dotenvConfig({ path: resolve(__dirname, dotenvConfigPath) })
// Ensure that we have all the environment variables we need.
const mnemonic: string | undefined = process.env.MNEMONIC
if (!mnemonic) {
throw new Error('Please set your MNEMONIC in a .env file')
}
const infuraApiKey: string | undefined = process.env.INFURA_API_KEY
if (!infuraApiKey) {
throw new Error('Please set your INFURA_API_KEY in a .env file')
}
const chainIds = {
'arbitrum-mainnet': 42161,
avalanche: 43114,
'bsc-mainnet': 56,
bsc: 97, // testnet
goerli: 5,
hardhat: 31337,
mainnet: 1,
'optimism-mainnet': 10,
'polygon-mainnet': 137,
'polygon-mumbai': 80001,
}
function getChainConfig(chain: keyof typeof chainIds): NetworkUserConfig {
let jsonRpcUrl: string
switch (chain) {
case 'avalanche':
jsonRpcUrl = 'https://api.avax.network/ext/bc/C/rpc'
break
case 'bsc':
jsonRpcUrl = 'https://data-seed-prebsc-1-s1.binance.org:8545/'
break
case 'bsc-mainnet':
jsonRpcUrl = 'https://bsc-dataseed1.binance.org'
break
default:
jsonRpcUrl = `https://${chain}.infura.io/v3/${infuraApiKey as string}`
}
return {
accounts: {
count: 10,
mnemonic,
path: "m/44'/60'/0'/0",
},
chainId: chainIds[chain],
url: jsonRpcUrl,
}
}
const config: HardhatUserConfig = {
defaultNetwork: 'hardhat',
etherscan: {
apiKey: {
arbitrumOne: process.env.ARBISCAN_API_KEY || '',
avalanche: process.env.SNOWTRACE_API_KEY || '',
bsc: process.env.BSCSCAN_API_KEY || '',
bscTestnet: process.env.BSCSCAN_API_KEY || '',
goerli: process.env.ETHERSCAN_API_KEY || '',
mainnet: process.env.ETHERSCAN_API_KEY || '',
optimisticEthereum: process.env.OPTIMISM_API_KEY || '',
polygon: process.env.POLYGONSCAN_API_KEY || '',
polygonMumbai: process.env.POLYGONSCAN_API_KEY || '',
},
},
gasReporter: {
currency: 'USD',
enabled: process.env.REPORT_GAS ? true : false,
excludeContracts: [],
src: './contracts',
},
networks: {
hardhat: {
accounts: {
mnemonic,
},
chainId: chainIds.hardhat,
},
arbitrum: getChainConfig('arbitrum-mainnet'),
avalanche: getChainConfig('avalanche'),
bsc: getChainConfig('bsc'), // NOTE: testnet
'bsc-mainnet': getChainConfig('bsc-mainnet'),
goerli: getChainConfig('goerli'),
mainnet: getChainConfig('mainnet'),
optimism: getChainConfig('optimism-mainnet'),
'polygon-mainnet': getChainConfig('polygon-mainnet'),
'polygon-mumbai': getChainConfig('polygon-mumbai'),
},
paths: {
artifacts: './artifacts',
cache: './cache',
sources: './contracts',
tests: './test',
},
solidity: {
version: '0.8.15',
settings: {
metadata: {
// Not including the metadata hash
// https://github.com/paulrberg/hardhat-template/issues/31
bytecodeHash: 'none',
},
// Disable the optimizer when debugging
// https://hardhat.org/hardhat-network/#solidity-optimizer-support
optimizer: {
enabled: true,
runs: 800,
},
},
},
typechain: {
outDir: 'types',
target: 'ethers-v5',
},
}
export default config