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NextJS + Web3 Starter

This is a frontend starter repository for decentralized application (dApp) development. It uses my contract playground code as a submodule. To retrieve those, you can:

git clone <this repo>
git submodule init
git submodule update

or you can clone this repo with --recurse-submodules option instead of the extra submodule steps.

Usage

Here is the workflow you should follow for development:

  1. Write your contract under the contract playground folder, which is a submodule specifically for writing contracts.
  2. Compile with yarn compile or test with yarn test. To use the contract typings from here, run migrate-types.sh at the root directory.
  3. This will allow you to access contract types and factories from frontend, without having the need to manually write any ABI-related code.
  4. On a separate terminal, start a node with npx hardhat node, or equivalent yarn node:start.
  5. Deploy the compiled contract to your localhost with npx hardhat run --network localhost <your-script>, or equivalent yarn node:run <your-script>.
  6. Write the contract address in your frontend code, and run the app with yarn run dev.
  7. You are ready to interact with the contract!

To connect to the localhost from MetaMask, change the chainId of localhost to be 31337. You can then import one of the public accounts (with known private keys) to your MetaMask, and interact with the contract using the ETH there. If you get internal errors from MetaMask such as different block number or nonce too high, reset your account from Settings > Advanced > Reset Account. This will make your injected wallet use local hardhat information instead of the cached one from your previous session.

There are pre-deployed contracts on Goerli testnet, see the addresses at addresses.ts.

Deployment

Project is deployed via Vercel CLI from the root directory with vercel .. In the project settings, the root directory is shown to be frontend and the preset settings are set for NextJS. I prefer this as otherwise TypeChain generated files wont be visible there, and if you try to compile stuff with Hardhat you will get an error for trying to use Hardhat non-locally.

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