scaffold-eth / scaffold-eth-typescript-challenges

All of our typescript challenges ported over from the javascript world

🏗 Scaffold-ETH

🚨🚨 This repository has been archived and is now read-only 🚨🚨

You are still welcome to fork and use as a template but no more changes will be made to this repository.

🎖 Scaffold-ETH 2 is the latest version, we recommend you fork: https://github.com/scaffold-eth/scaffold-eth-2

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everything you need to build on Ethereum! 🚀

🧪 Quickly experiment with Solidity using a frontend that adapts to your smart contract:

🏄‍♂️ Quick Start

Prerequisites: Node (v18 LTS) plus Yarn (v1.x) and Git

🚨 If you are using a version < v18 you will need to remove openssl-legacy-provider from the start script in package.json

1️⃣ clone/fork 🏗 scaffold-eth:

git clone https://github.com/scaffold-eth/scaffold-eth.git

2️⃣ install and start your 👷‍ Hardhat chain:

cd scaffold-eth
yarn install
yarn chain

3️⃣ in a second terminal window, start your 📱 frontend:

🚨 if your contracts are not deployed to localhost, you will need to update the default network in App.jsx to match your default network in hardhat-config.js.

cd scaffold-eth
yarn start

4️⃣ in a third terminal window, 🛰 deploy your contract:

🚨 if you are not deploying to localhost, you will need to run yarn generate first and then fund the deployer account. To view account balances, run yarn account. You will also need to update hardhat-config.js with the correct default network.

cd scaffold-eth
yarn deploy

🔏 Edit your smart contract YourContract.sol in packages/hardhat/contracts

📝 Edit your frontend App.jsx in packages/react-app/src

💼 Edit your deployment scripts in packages/hardhat/deploy

📱 Open http://localhost:3000 to see the app

🚨📡 To deploy to a public domain, use yarn surge. You will need to have a surge account and have the surge CLI installed. There is also the option to deploy to IPFS using yarn ipfs and yarn s3 to deploy to an AWS bucket 🪣 There are scripts in the packages/react-app/src/scripts folder to help with this.`

📚 Documentation

Documentation, tutorials, challenges, and many more resources, visit: docs.scaffoldeth.io

🍦 Other Flavors

• scaffold-eth-typescript
• scaffold-eth-tailwind
• scaffold-nextjs
• scaffold-chakra
• Scaffold-ETH x Buildbear
• eth-hooks
• eth-components
• scaffold-eth-expo
• scaffold-eth-truffle

🔭 Learning Solidity

📕 Read the docs: https://docs.soliditylang.org

📚 Go through each topic from solidity by example editing YourContract.sol in 🏗 scaffold-eth

• Primitive Data Types
• Mappings
• Structs
• Modifiers
• Events
• Inheritance
• Payable
• Fallback

📧 Learn the Solidity globals and units

🛠 Buidl

Check out all the active branches, open issues, and join/fund the 🏰 BuidlGuidl!

• 🚤 Follow the full Ethereum Speed Run

• 🎟 Create your first NFT

• 🥩 Build a staking smart contract

• 🏵 Deploy a token and vendor

• 🎫 Extend the NFT example to make a "buyer mints" marketplace

• 🎲 Learn about commit/reveal

• ✍️ Learn how ecrecover works

• 👩‍👩‍👧‍👧 Build a multi-sig that uses off-chain signatures

• ⏳ Extend the multi-sig to stream ETH

• ⚖️ Learn how a simple DEX works

• 🦍 Ape into learning!

💌 P.S.

🌍 You need an RPC key for testnets and production deployments, create an Alchemy account and replace the value of ALCHEMY_KEY = xxx in packages/react-app/src/constants.js with your new key.

📣 Make sure you update the InfuraID before you go to production. Huge thanks to Infura for our special account that fields 7m req/day!

🏃💨 Speedrun Ethereum

Register as a builder here and start on some of the challenges and build a portfolio.

💬 Support Chat

Join the telegram support chat 💬 or buidlguidl discord to ask questions and find others building with 🏗 scaffold-eth!

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🙏 Please check out our Gitcoin grant too!

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scaffold-eth-typescript-challenges's Issues

bug: yarn watch is using watch.js

Hi! yarn watch is using watch.js

yarn watch

node:internal/modules/cjs/loader:936
throw err;
^

Error: Cannot find module '/home/scaffold-eth-typescript-challenges/packages/hardhat-ts/scripts/watch.js'

bug in package.json

Line 17 should end with node", instead of chain",.

Challenge 2 - USD Amount of Your Tokens

When you click to switch between the token amount and USD amount, it is multiplying the token amount * Eth price instead of the token price.

Challenge Submission

The signature request for submitting a challenge does not work with WalletConnect/Ledger Live

Challenge-2

`yarn chain` failing with typescript version

After installing all yarn package, I run yarn chain to run the local blokchain but its giving following error. (Happening on both challenge 0 and challenge 1)

PS D:\coding-learning\speedrunethereum\challenge-1-decentralized-staking> yarn chain
yarn run v1.22.19
$ yarn workspace @scaffold-eth/hardhat chain
$ hardhat node --network hardhat --no-deploy
An unexpected error occurred:

hardhat.config.ts:31:5 - error TS2717: Subsequent property declarations must have the same type.  Property 'ethers' must be of type 'typeof import("D:/coding-learning/speedrunethereum/challenge-1-decentralized-staking/node_modules/ethers/lib/ethers") & HardhatEthersHelpers', but here has type 'any'.

31     ethers: TEthers;
       ~~~~~~

  node_modules/@nomiclabs/hardhat-ethers/internal/type-extensions.d.ts:6:9
    6         ethers: typeof ethers & HardhatEthersHelpers;
              ~~~~~~
    'ethers' was also declared here.

error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
error Command failed.
Exit code: 1

I am using Windows 11, VSCode and Powershell 7.5 terminal.

test: Challenge 0 - Simple NFT Example Waiting for confirmation...

HI!

The "Challenge 0 - Simple NFT Example" test does not work for me. It does not go beyond "Waiting for confirmation...".

Do I need to do something else?

yarn test

Challenge 0: 🎟 Simple NFT Example 🤓
YourCollectible
✓ Should deploy YourCollectible (284ms)
mintItem()
🧑‍🏫 Tester Address: 0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266
⚖️ Starting balance: 0
🔨 Minting...
🏷 mint tx: 0x30672a2f684c8d8ed69e88c2661f3890a30d85d909f7b94eba62ace58f4e43d8
⏳ Waiting for confirmation...

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 21.10
Release: 21.10
Codename: impish

node -v
v16.13.2

Failing test in challenge-1 due to unnecessary contract execute call

This is the second milestone test for challenge-1: Should redeploy Staker, stake, not get enough, and withdraw.
The test calls the execute function - which is required to fail if the threshold has not been reached and therefore cannot be run in the same test as withdraw - which is required to succeed if the threshold has not been reached.
This causes the transaction to revert and the test to fail despite the contract fulfilling the criteria.
Calling execute is not mentioned in the test description so it is either there by mistake or is out of the scope of the test?

Link to relevant code

Checkpoint 3: 🔑 Rigged Contract (⚔️ Side Quest)

1. Uncomment the code in App.jsx to show a riggedRoll button and contract balance on the main UI tab. Now

Change App.jsx to App.tsx

2. Add a new comment under side quest
   [ ] Uncomment the code in 01_deploy_riggedRoll.ts to deploy riggedRoll contract.

Tests missing from hardhat workspace

Vanilla JS version of this repo has tests against your contracts but this one just has a sample-test.ts file.

Challenge-0

Test for challenge-1-decentralized-staking does not exist

In the vanilla JavaScript version of this challenge there is a file scaffold-eth-challenges/packages/hardhat/test/challenge_1.js. This file is missing in this TypeScript version of the challenge. Instead, there is only a sample test file scaffold-eth-typescript-challenges/packages/hardhat-ts/test/sample_test.ts which does not work due to chai not being installed as a package. It also does not test the challenge code.

In other words:
We need a version of challenge_1.js in this TypeScript version of the challenge. Preferably made into a TypeScript version.

cannot install packages

I cloned a repo and after switching branch, I tried to install packages with yarn install but it's giving me some weird error

Below is the exact image showing the error in my terminal

Challenge-0

Challenge-1

Challenge-1

Challenge-2