Lesson 7 - 11:18:00 - problem with ethers.getContract()

[MateusTuon]

When i run - yarn hardhat test - I get the following error

Here is the FundMe.test.js code

const { deployments, ethers, getNamedAccounts } = require("hardhat")
const { assert } = require("chai")

describe("FundMe", function () {
    let fundMe
    let mockV3Aggregator
    let deployer

    beforeEach(async () => {
        deployer = (await getNamedAccounts()).deployer
        console.log("---------------------------------")
        console.log(deployer)
        console.log("---------------------------------")
        await deployments.fixture(["all"])

        fundMe = await ethers.getContractAt("FundMe", deployer)
        mockV3Aggregator = await ethers.getContract(
            "MockV3Aggregator",
            deployer
        )
    })

    describe("constructor", async function () {
        it("sets the aggregator addresses correctly", async function () {
            const response = await fundMe.priceFeed()
            assert.equal(response, mockV3Aggregator.address)
        })
    })
})

It seems like this function does not exist, I tried using the function getContractAt, but get the same error

[othaime-en]

There's probably a problem with your @nomiclabs/hardhat-ethers package. Make sure you have it installed and is in your package.json file. You should have this line: "@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers" in the file

try running yarn hardhat add @nomiclabs/hardhat-ethers , reinitializing your vscode, or reinstalling all you hardhat dependencies.

[MateusTuon]

I have this line in my package.json, i have reinitiliazed , guess I'll have to reinstall the dependencies

[othaime-en]

An easy way would be getting the package.json from the lesson's repo reinstalling all the dependencies there.

[MateusTuon]

makes sense! I'll try that

[othaime-en]

Almost forgot! As @krakxn has pointed out, remember to delete the node_modules folder and cache before reinstalling the dependencies.

[MateusTuon]

I tried that , still same error

[krakxn]

The following should fix it:

-mockV3Aggregator = await ethers.getContract(
+mockV3Aggregator = await ethers.getContractAt(

[MateusTuon]

The script you mean is this one?

const { network } = require("hardhat")

const DECIMALS = "8"
const INITIAL_PRICE = "200000000000" // 2000
module.exports = async ({ getNamedAccounts, deployments }) => {
    const { deploy, log } = deployments
    const { deployer } = await getNamedAccounts()
    const chainId = network.config.chainId
    // If we are on a local development network, we need to deploy mocks!

    if (chainId == 31337) {
        log("Local network detected! Deploying mocks...")
        await deploy("MockV3Aggregator", {
            contract: "MockV3Aggregator",
            from: deployer,
            log: true,
            args: [DECIMALS, INITIAL_PRICE],
        })
        log("Mocks Deployed!")
        log("------------------------------------------------")
        log(
            "You are deploying to a local network, you'll need a local network running to interact"
        )
        log(
            "Please run `npx hardhat console` to interact with the deployed smart contracts!"
        )
        log("------------------------------------------------")
    }
}
module.exports.tags = ["all", "mocks"]

[MateusTuon]

I did all the steps to reinstall the dependencies, but I still get the same error

[krakxn]

Seems fine.

Could you make a repo? I will look into it directly.

[MateusTuon]

Sure! Just creating here.

[MateusTuon]

https://github.com/MateusTuon/hardhatIssue

[othaime-en]

How about using getContract instead of getContractAt when getting the fundMe contract in the line:
fundMe = await ethers.getContractAt("FundMe", deployer) and see if it works.

[MateusTuon]

I have this beta version because i copied from the original repo

[othaime-en]

Oh. Then try and run the above command and see if it will overwrite the initial version.

[MateusTuon]

it did overwrite but i still get the error

[othaime-en]

Okay. Let me go through your code slowly and try to deduce where the error is coming from.

[MateusTuon]

ok, thank you for helping!