Lesson 9

[LeoFranklin015]

This is the deploy script

const { network, ethers } = require("hardhat");
const { developmentChain, networkConfig } = require("../helper-hardhat-config");
const { verify } = require("../utils/verify");
const VRF_SUBSCRIPTION_FUND_AMOUNT = ethers.parseEther("1");
require("dotenv").config();

module.exports = async ({ getNamedAccounts, deployments }) => {
  const { deploy, log } = deployments;
  const { deployer } = await getNamedAccounts();
  const chainId = network.config.chainId;
  let vrfCoordinatorV2Address, subscriptionId;
  if (developmentChain.includes(network.name)) {
    try {
      const vrfCoordinatorV2Mock = await ethers.getContract(
        "VRFCoordinatorV2Mock"
      );
      vrfCoordinatorV2Address = vrfCoordinatorV2Mock.target;
      const transactionResponse =
        await vrfCoordinatorV2Mock.createSubscription();
      const transactionReceipt = await transactionResponse.wait(1);
      subscriptionId = transactionReceipt.events[0].args.subId;
      await vrfCoordinatorV2Mock.fundSubscription(
        subscriptionId,
        VRF_SUBSCRIPTION_FUND_AMOUNT
      );
    } catch (error) {
      console.error(
        "Error while interacting with VRFCoordinatorV2Mock:",
        error
      );
      throw error; // Rethrow the error to stop deployment
    }
  } else {
    vrfCoordinatorV2Address = networkConfig[chainId]["vrfCoordinatorV2"];
    subscriptionId = networkConfig[chainId]["subscriptionId"];
  }

  const entranceFee = networkConfig[chainId]["entranceFee"];
  const gasLane = networkConfig[chainId]["gasLane"];
  const callBackGasLimit = networkConfig[chainId]["callBackGasLimit"];
  const interval = networkConfig[chainId]["interval"];

  console.log("Address :", vrfCoordinatorV2Address);
  console.log("entranceFee:", entranceFee);
  console.log("gasLane:", gasLane);
  console.log("VRF_SUBSCRIPTION_FUND_AMOUNT:", VRF_SUBSCRIPTION_FUND_AMOUNT);
  console.log("callBackGasLimit:", callBackGasLimit);
  console.log("interval:", interval);

  const args = [
    vrfCoordinatorV2Address,
    entranceFee,
    gasLane,
    subscriptionId,
    callBackGasLimit,
    interval,
  ];

  console.log(args);
  try {
    const lottery = await deploy("Lottery", {
      from: deployer,
      args: args,
      log: true,
      waitConfirmations: network.config.blockConfirmations || 1,
    });

    if (!developmentChain.includes(network.name) && process.env.ETHERSCAN_KEY) {
      log("Verifying...... ");
      await verify(lottery.address, args);
    }

    log("-------------------------------------");
  } catch (error) {
    console.error("Error while deploying the Lottery contract:", error);
    throw error; // Rethrow the error to stop deployment
  }
};

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

the error I get is

Nothing to compile
LOCAL NETWORK detected ... Deploying Mocks
deploying "VRFCoordinatorV2Mock" (tx: 0xf50670372fe601f04f6469a19634012866cc208bc3ed8f1c902ef2b2fb6bb71f)...: deployed at 0x5FbDB2315678afecb367f032d93F642f64180aa3 with 2540078 gas
Mocks Deployed
---------------------------------------------------------------------------------
Error while interacting with VRFCoordinatorV2Mock: TypeError: Cannot read properties of undefined (reading '0')
    at Object.module.exports [as func] (/Users/untitled folder/BlockChain/Lottery/deploy/01-deploy-Lottery.js:21:49)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at runNextTicks (node:internal/process/task_queues:64:3)
    at listOnTimeout (node:internal/timers:533:9)
    at processTimers (node:internal/timers:507:7)
    at DeploymentsManager.executeDeployScripts (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1226:22)
    at DeploymentsManager.runDeploy (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1059:5)
    at SimpleTaskDefinition.action (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat-deploy/src/index.ts:438:5)
    at Environment._runTaskDefinition (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat/src/internal/core/runtime-environment.ts:333:14)
    at Environment.run (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat/src/internal/core/runtime-environment.ts:166:14)
An unexpected error occurred:

Error: ERROR processing /Users/untitled folder/BlockChain/Lottery/deploy/01-deploy-Lottery.js:
TypeError: Cannot read properties of undefined (reading '0')
    at Object.module.exports [as func] (/Users/untitled folder/BlockChain/Lottery/deploy/01-deploy-Lottery.js:21:49)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at runNextTicks (node:internal/process/task_queues:64:3)
    at listOnTimeout (node:internal/timers:533:9)
    at processTimers (node:internal/timers:507:7)
    at DeploymentsManager.executeDeployScripts (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1226:22)
    at DeploymentsManager.runDeploy (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1059:5)
    at SimpleTaskDefinition.action (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat-deploy/src/index.ts:438:5)
    at Environment._runTaskDefinition (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat/src/internal/core/runtime-environment.ts:333:14)
    at Environment.run (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat/src/internal/core/runtime-environment.ts:166:14)
    at DeploymentsManager.executeDeployScripts (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1229:19)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at runNextTicks (node:internal/process/task_queues:64:3)
    at listOnTimeout (node:internal/timers:533:9)
    at processTimers (node:internal/timers:507:7)
    at DeploymentsManager.runDeploy (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1059:5)
    at SimpleTaskDefinition.action (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat-deploy/src/index.ts:438:5)
    at Environment._runTaskDefinition (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat/src/internal/core/runtime-environment.ts:333:14)
    at Environment.run (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat/src/internal/core/runtime-environment.ts:166:14)
    at SimpleTaskDefinition.action (/Users/untitled folder/BlockChain/Lottery/node_modules/hardhat-deploy/src/index.ts:584:32)
error Command failed with exit code 1.

[alfaqi]

Please paste 01-deploy-Lottery.js file

[AmitKochar1]

I think you are missing the parameters in your VRFCoordinatorV2Mock file. Even though it's a mock file, you still need to satisfy the construction arguments.

[Adelani10]

check #5779

[Astronaut828]

try to change it to logs

subscriptionId = transactionReceipt.events[0].args.subId;

subscriptionId = transactionReceipt.logs[0].args.subId