Lesson:11 Error loading hardhat node

[Shawon-Mandal]

I cloned the github repo in my VS Code and did accordingly the video and I am having some issues while loading hardhat node.

First of all,it keeps on loading and its stuck here for a long time.

next is the command issue.I think the hardhat node is the main reason behind this problem.

How can I solve this problem?

[shree675]

@Shawon-Mandal Regarding your second problem, make sure that your hardhat dependency is in version 2.12.4. It will be shown in your package.json file. In case yours is a different version, then just change it to 2.12.4. This may solve the problem. If that doesn't solve it, then these are my dependencies and this is working for me:

"devDependencies": {
    "@chainlink/contracts": "^0.5.1",
    "@nomicfoundation/hardhat-toolbox": "^2.0.0",
    "@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers@^0.3.0-beta.13",
    "ethers": "^5.7.2",
    "hardhat": "^2.12.4",
    "hardhat-deploy": "^0.11.22",
},

You can change yours to the above versions and try, if the main error is caused due to dependency issues.

[Shawon-Mandal]

@shree675 when I copy pasted your dependencies,I got this error

Usage error:Invalid package.json in package.json

[shree675]

@Shawon-Mandal Please make sure you replaced only your devDependencies section with mine. Keep your remaining sections as it is.
Your entire package.json file must be structured as the following:

{
  "name": "hardhat-test-project",
  "version": "1.0.0",
  "scripts": {},
  "devDependencies": {
    "@chainlink/contracts": "^0.5.1",
    "@nomicfoundation/hardhat-toolbox": "^2.0.0",
    "@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers@^0.3.0-beta.13",
    "ethers": "^5.7.2",
    "hardhat": "^2.12.4",
    "hardhat-deploy": "^0.11.22",
    "solhint": "^3.3.7",
    "solidity-coverage": "^0.8.2"
  },
  "dependencies": {
    "dotenv": "^16.0.3"
  }
}

[Shawon-Mandal]

@shree675 I did replace only my devDependencies with yours and now when I pasted your package.json file in my vs code and changed the name according to my project,I still get the same errors.

[shree675]

@Shawon-Mandal Maybe you can upload your code to github and share the repository link here, it can be tested better that way.

[Shawon-Mandal]

I cloned the whole repository from the repo associated with this course.No additional changes were made.

[alymurtazamemon]

@Shawon-Mandal Nope, these errors are not due to that, getContract is not a function error indicates that you did not have hardhat-deploy dependency installed. Further errors are due to using the console, you already mentioned the priceConsumerV3 variable and you cannot define it again.

You should install these;

npm install -D hardhat-deploy

npm install --save-dev  @nomiclabs/hardhat-ethers@npm:hardhat-deploy-ethers ethers

Add this in hardhat.config.js file

require('hardhat-deploy');

Now you should restart the node and perform the operations again and this time these will work. And make sure that console remember the old commands so if you declare anytime in the previous commands you need to work according to them.

[Shawon-Mandal]

@alymurtazamemon I've Installed all of them and still facing the same problem

[Shawon-Mandal]

Anyways,I think I should just move on to the next Lesson of this course.I'll come back again to this after some time.

Thank you for your response @alymurtazamemon @shree675

[shree675]

@Shawon-Mandal I have figured out the correct dependencies. In your package.json file, you have to change the versions of a couple of dependencies.

1. Change hardhat from 2.11.2 to 2.12.4.
2. Change @nomiclabs/hardhat-ethers from 2.1.1 to npm:hardhat-deploy-ethers@^0.3.0-beta.13.

The final package.json will contain the above modified dependencies:

"@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers@^0.3.0-beta.13",
"hardhat": "^2.12.4",

and the rest of the existing dependencies.

Don't forget to run npm install or yarn add after modifying the above two dependencies.

[Shawon-Mandal]

@shree675 When I looked into my package.json file, I found out that I already had these dependencies in my package.json.And the results were still the same

[DorianDaSilva]

@Shawon-Mandal Go to main ReadMe on the course repo, on lesson 9 you can copy/paste ALL the dependencies we need for the course.

You can also copy/paste yarn.lock and restart Vscode but I suggest you go through the video once again to make sure you modify the repo you cloned so it matches the video since there are many differences between both.

Also, make sure you have all imports in your code. Hope this helps!

[vise]

For anyone else using a more recent version of Node & Ethers.
Node v18
Ethers 5.7.2

• Run the hardhat local node
• Deploy contracts to localhost
  yarn hardhat run --network localhost scripts/deployment/main.js

ETH/USD Price Consumer deployed to 0x0165878A594ca255338adfa4d48449f69242Eb8F on localhost

• Instead of deprecated ethers.getContract() use ethers.getContractAt("name", contractAddress) in the hardhat console
  ex.

const contractAddr = "0x0165878A594ca255338adfa4d48449f69242Eb8F"
> undefined
const contract = await ethers.getContractAt("PriceConsumerV3", contractAddr)
> undefined
contract.getLatestPrice()