helper-hardhat-config.js

const networkConfig = {
    31337: {
        name: "hardhat",
        // ethUsdPriceFeed: "0x694AA1769357215DE4FAC081bf1f309aDC325306",
        gasLane: "0x787d74caea10b2b357790d5b5247c2f63d1d91572a9846f780606e4d953677ae", // 30 gwei
        mintFee: "10000000000000000", // 0.01 ETH
        callbackGasLimit: "500000", // 500,000 gas
        interval: "30",
    },
    // Price Feed Address, values can be obtained at https://docs.chain.link/data-feeds/price-feeds/addresses
    11155111: {
        name: "sepolia",
        ethUsdPriceFeed: "0x694AA1769357215DE4FAC081bf1f309aDC325306", // 见https://docs.chain.link/data-feeds/price-feeds/addresses?network=ethereum&page=1
        vrfCoordinatorV2plus: "0x9ddfaca8183c41ad55329bdeed9f6a8d53168b1b",
        gasLane: "0x787d74caea10b2b357790d5b5247c2f63d1d91572a9846f780606e4d953677ae",
        callbackGasLimit: "500000", // 500,000 gas
        mintFee: "10000000000000000", // 0.01 ETH
        subscriptionId:
            "102764618357577415192321788315192347422620231223760019320611939924705533878226", // add your ID here!
    },
}

const DECIMALS = "18"
const INITIAL_PRICE = "200000000000000000000" // ethers.utils.parseUnits("2000","ether") 感觉2000和这里的数字200对不上
const developmentChains = ["hardhat", "localhost"]

module.exports = {
    networkConfig,
    developmentChains,
    DECIMALS,
    INITIAL_PRICE,
}