hardhat.networks.ts

const networks = {};

function register(
    name: string,
    chainId: number,
    url: string | undefined,
    privateKey: string | undefined
) {
    if (url && privateKey) {
        networks[name] = {
            url,
            chainId,
            accounts: [privateKey],
        };
        console.log(`Network '${name}' registered`);
    } else {
        console.log(`Network '${name}' not registered`);
    }
}

register(
    "mainnet",
    1,
    process.env.MAINNET_RPC_URL,
    process.env.MAINNET_PRIVATE_KEY
);
register("bsc", 56, process.env.BSC_RPC_URL, process.env.BSC_PRIVATE_KEY);
register("kovan", 42, process.env.KOVAN_RPC_URL, process.env.KOVAN_PRIVATE_KEY);
register(
    "optimistic",
    10,
    process.env.OPTIMISTIC_RPC_URL,
    process.env.OPTIMISTIC_PRIVATE_KEY
);
register(
    "kovan-optimistic",
    69,
    process.env.KOVAN_OPTIMISTIC_RPC_URL,
    process.env.KOVAN_OPTIMISTIC_PRIVATE_KEY
);
register(
    "matic",
    137,
    process.env.MATIC_RPC_URL,
    process.env.MATIC_PRIVATE_KEY
);
register(
    "arbitrum",
    42161,
    process.env.ARBITRUM_RPC_URL,
    process.env.ARBITRUM_PRIVATE_KEY
);
register(
    "ropsten",
    3,
    process.env.ROPSTEN_RPC_URL,
    process.env.ROPSTEN_PRIVATE_KEY
);
register(
    "rinkeby",
    4,
    process.env.RINKEBY_RPC_URL,
    process.env.RINKEBY_PRIVATE_KEY
);
register("xdai", 100, process.env.XDAI_RPC_URL, process.env.XDAI_PRIVATE_KEY);
register("avax", 43114, process.env.AVAX_RPC_URL, process.env.AVAX_PRIVATE_KEY);

export default networks;