helper-hardhat-config.js

const { ethers } = require("hardhat")

const networkConfig = {
    4: {
        name: "rinkeby",
        ethUsdPriceFeed: "0x8A753747A1Fa494EC906cE90E9f37563A8AF630e",
        vrfCoordinatorV2: "0x6168499c0cFfCaCD319c818142124B7A15E857ab", // specific for Rinkeby testnets
        entranceFee: ethers.utils.parseEther("0.01"),
        gasLane:
            "0xd89b2bf150e3b9e13446986e571fb9cab24b13cea0a43ea20a6049a85cc807cc",
        subscriptionId: "0",
        callbackGasLimit: "500000", // 500 thousands
        interval: "30",
    },
    137: {
        name: "polygon",
        vrfCoordinatorV2: "0xAE975071Be8F8eE67addBC1A82488F1C24858067",
        ethUsdPriceFeed: "0xF9680D99D6C9589e2a93a78A04A279e509205945",
    },
    31337: {
        name: "localhost",
        entranceFee: ethers.utils.parseEther("0.01"),
        gasLane:
            "0xd89b2bf150e3b9e13446986e571fb9cab24b13cea0a43ea20a6049a85cc807cc",
        callbackGasLimit: "500000", // 500 thousands
        interval: "30",
    },
    1: {
        name: "mainnet",
        vrfCoordinatorV2: "0x271682DEB8C4E0901D1a1550aD2e64D568E69909",
        ethUsdPriceFeed: "0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419",
        entranceFee: ethers.utils.parseEther("0.01"),
        gasLane:
            "0xd89b2bf150e3b9e13446986e571fb9cab24b13cea0a43ea20a6049a85cc807cc",
        subscriptionId: "0",
        callbackGasLimit: "500000", // 500 thousands
        interval: "30",
    },
}

const developmentChains = ["hardhat", "localhost"]
const decimals = 8
const initial_answer = 200000000000

module.exports = {
    networkConfig,
    initial_answer,
    decimals,
    developmentChains,
}