Lesson 9 : TypeError: Cannot read properties of undefined (reading 'add')

[MrPositive0709]

This is my GitHub repo : https://github.com/MrPositive0709/hardhat-smartcontract-lottery-fcc

I can not deploy my smart contract with hh deploy
After researching I think maybe the issue is with package dependency

this is the whole bug : root@DESKTOP-D1RUUTB:~/hh-fcc/hardhat-smartcontract-lottery-fcc# hh deploy
An unexpected error occurred:

TypeError: Cannot read properties of undefined (reading 'add')
at extendEnvironment (/root/node_modules/hardhat/src/internal/core/config/config-env.ts:130:19)
at Object. (/root/node_modules/@nomicfoundation/hardhat-ethers/src/internal/index.ts:19:18)
at Module._compile (node:internal/modules/cjs/loader:1103:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1157:10)
at Module.load (node:internal/modules/cjs/loader:981:32)
at Function.Module._load (node:internal/modules/cjs/loader:822:12)
at Module.require (node:internal/modules/cjs/loader:1005:19)
at require (node:internal/modules/cjs/helpers:102:18)
at Object. (/root/node_modules/@nomicfoundation/hardhat-chai-matchers/src/index.ts:1:1)
at Module._compile (node:internal/modules/cjs/loader:1103:14)
this is the package.json :

{
"name": "hardhat-smartcontract-lottery-fcc",
"version": "1.0.0",
"main": "index.js",
"license": "MIT",
"devDependencies": {
"@chainlink/contracts": "^0.6.1",
"@nomicfoundation/hardhat-verify": "^1.0.3",
"@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers@^0.3.0-beta.13",
"@nomiclabs/hardhat-etherscan": "^3.1.7",
"@nomiclabs/hardhat-waffle": "^2.0.6",
"chai": "^4.3.7",
"dotenv": "^16.3.1",
"ethereum-waffle": "^4.0.10",
"ethers": "^5.5.2",
"hardhat": "^2.6.4",
"hardhat-contract-sizer": "^2.10.0",
"hardhat-deploy": "^0.11.34",
"hardhat-gas-reporter": "^1.0.9",
"prettier": "^2.8.8",
"prettier-plugin-solidity": "^1.1.3",
"solhint": "^3.4.1",
"solidity-coverage": "^0.8.3"
}
}

this is my hardhat-config.js :

`require("@nomiclabs/hardhat-waffle");
require("hardhat-deploy");
require("solidity-coverage");
require("hardhat-gas-reporter");
require("hardhat-contract-sizer");
require("dotenv").config();
require("@typechain/hardhat");
require("@nomiclabs/hardhat-ethers");
require("@nomicfoundation/hardhat-toolbox");
require("@nomicfoundation/hardhat-verify");
require("hardhat-gas-reporter");
require("hardhat-deploy");
require("@nomicfoundation/hardhat-ethers");
require("hardhat-deploy-ethers");

/** @type import('hardhat/config').HardhatUserConfig */

const SEPOLIA_RPC_URL = process.env.SEPOLIA_RPC_URL;
const PRIVATE_KEY = process.env.PRIVATE_KEY;

module.exports = {
defaultNetwork: "hardhat",
networks: {
hardhat: {
chainId: 31337,
blockComfirmations: 1,
},
sepolia: {
chainId: 11155111,
blockComfirmations: 6,
url: SEPOLIA_RPC_URL,
accounts: [PRIVATE_KEY],
},
},
solidity: "0.8.18",
namedAccounts: {
deployer: {
default: 0,
},
player: {
default: 1,
},
},
};
`

[shikhar229169]

In ethers v6, the add function of big numbers data type is removed.
So replace the add function you are using in your javascript and use '+' operator.
You can also refer to the ethers documentation.
I recommend you switch to ethers v5.7.2, because v6 creates so much errors and certain functions are buggy.

[MrPositive0709]

Thanks for your help !
I have already fixed the bug somehow by install 'ethers' besides 'hardhat-ethers' with npm install --save-dev ethers
However , I do not see that I use "add" function in my code

[MrPositive0709]

@shikhar229169 I have run into the same problem again but npm install --save-dev ethers doesn't work anymore and my ethers version is 5.7.2 already

[shikhar229169]

Actually there is again a package dependency issue.
I think it will be better to switch to new versions now.
Can you push your code to GitHub and provide the repo link.

[MrPositive0709]

@shikhar229169 here it is : https://github.com/MrPositive0709/hardhat-smartcontract-lottery-fcc

It has been 3 days since I run into this problem , after tinkering all the google , github , stackoverflow and chatgpt I still couldn't fix that:(

[alfaqi]

you're missing a lot of things.
1- package.json
Add and replace these lines, use npm i --force to install packages

    "@nomicfoundation/hardhat-verify": "^1.0.3",
    "@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers@^0.3.0-beta.13",

2- 00-deploy-mocks.js
Add this line

module.exports.tags = ["all", "mocks"];

3- 01-deploy-raffle.js
Change keepersUpdateInterval to interval and raffleEntranceFee to entranceFee

4- helper-hardhat-config.js
Add value to gasLane like this 0x474e34a077df58807dbe9c96d3c009b23b3c6d0cce433e59bbf5b34f823bc56c

5- And there are some issues with your test, try to figure out by your own.

[MrPositive0709]

Thanks for remind me about my missing !

I have tried to updated the @nomiclabs/hardhat-ethers and @nomicfoundation/hardhat-verify like you told but it does not solve the problem .

I have recognized that the bug report only report error at TypeScript files in node_modules folder , maybe it's a point that should be noticed

[alfaqi]

I forgot to tell you to add these requirements only into hardhat.config.js file

require("@nomiclabs/hardhat-waffle");
require("hardhat-deploy");
require("dotenv").config();
require("@nomicfoundation/hardhat-verify");

[MrPositive0709]

I have added those already , I hope that you can go into my Github Repo to help me because I have modified a lot of things compared with the code above

[MrPositive0709]

Here it is : https://github.com/MrPositive0709/hardhat-smartcontract-lottery-fcc

[MrPositive0709]

@alfaqi your solution works , it my bad because misunderstood that just add them instead of remove others requirements and add those only