Cannot read properties of undefined (reading 'ethUsdPriceFeed')

[AjayAsnani]

code

// function deployFunc() {
// console.log("Hello")
// }

// module.exports.default = deployFunc

// module.exports = async (hre) => {
// const { getNamedAccounts, deployments } = hre
// }SAME
const { network } = require("hardhat")
const { networkConfig, developementChain } = require("../helper-hardhat-config")

module.exports = async ({ getNamedAccounts, deployments }) => {
const { deploy, log } = deployments
const { deployer } = await getNamedAccounts()
const chainId = network.config.chainId

let ethusdPriceFeedAddress
if (developementChain.includes(network.name)) {
    const ethUsdAggregaator = await deployments.get(
        "AggregatorValidatorMock"
    )
    ethusdPriceFeedAddress = ethUsdAggregaator.address
} else {
    ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"]
}

const fundMe = await deploy("fundMe", {
    from: deployer,
    args: [ethusdPriceFeedAddress], //pricefeed address
    log: true,
})
console.log(
    "----------------------------------------------------------------------"
)

}

module.exports.tags = ["all", "fundMe"]

ERROR=== Cannot read properties of undefined (reading 'ethUsdPriceFeed')

[buikhacnam]

can you show the file helper-hardhat-config.js. It should look like this:

const networkConfig = {
  31337: {
    name: "localhost",
  },
  // Price Feed Address, values can be obtained at https://docs.chain.link/docs/reference-contracts
  // Default one is ETH/USD contract on Kovan
  42: {
    name: "kovan",
    ethUsdPriceFeed: "0x9326BFA02ADD2366b30bacB125260Af641031331",
  },
}

const developmentChains = ["hardhat", "localhost"]

module.exports = {
  networkConfig,
  developmentChains,
}

https://github.com/PatrickAlphaC/hardhat-fund-me-fcc/blob/main/helper-hardhat-config.js

[AjayAsnani]

can you show the file helper-hardhat-config.js. It should look like this:

const networkConfig = {
  31337: {
    name: "localhost",
  },
  // Price Feed Address, values can be obtained at https://docs.chain.link/docs/reference-contracts
  // Default one is ETH/USD contract on Kovan
  42: {
    name: "kovan",
    ethUsdPriceFeed: "0x9326BFA02ADD2366b30bacB125260Af641031331",
  },
}

const developmentChains = ["hardhat", "localhost"]

module.exports = {
  networkConfig,
  developmentChains,
}

https://github.com/PatrickAlphaC/hardhat-fund-me-fcc/blob/main/helper-hardhat-config.js

MY CODE
const networkConfig = {
4: {
name: "rinkeby",
ethUsdPriceFeed: "0x8A753747A1Fa494EC906cE90E9f37563A8AF630e",
},
137: {
name: "polygon",
ethUsdPriceFeed: " 0xF9680D99D6C9589e2a93a78A04A279e509205945",
},
31337: {
name: "localhost",
},
}

const developementChain = ["hardhat,localhost"]
const DECIMAL = 8
const INITIAL_ANSWER = 20000000000

module.exports = {
networkConfig,
developementChain,
DECIMAL,
INITIAL_ANSWER,
}

[coinfeigm]

This line:
ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"];
should be
ethusdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"];