solidity-development

name	solidity-development
description	Solidity smart contract development workflow. Use when modifying smart contracts in apps/eth-contracts/contracts/.

Solidity Development Workflow

Workflow for Solidity smart contract changes in the apps/eth-contracts/ Foundry project.

Prerequisites

Use git-workflow Skill for branch management, commit conventions, and PR creation.

Applicable Directories

Path	Description
apps/eth-contracts/contracts/	Smart contract source files
apps/eth-contracts/script/	Foundry deployment scripts
apps/eth-contracts/test/	Foundry test files (*.t.sol)

Toolchain

Tool	Version	Role
Foundry (forge)	1.6.0-nightly	Compile, test, deploy
Solidity	^0.8.34	Smart contract language
OpenZeppelin Contracts	^5.6.1	ERC-20 / standard base contracts
bun	primary	npm package manager
solhint	^6.0.3	Solidity linter
dprint	^0.52.0	JS/TS formatter

Note: forge is installed at ~/.foundry/bin/forge (may not be in PATH). Run with full path or add ~/.foundry/bin to PATH.

Setup (first time)

cd apps/eth-contracts

# 1. Install forge-std (Foundry testing/scripting library)
forge install foundry-rs/forge-std

# 2. Install npm dependencies (@openzeppelin/contracts, solhint, dprint)
bun install

Verification Commands

cd apps/eth-contracts

forge build          # Compile all contracts (artifacts → out/)
forge test -v        # Run Foundry unit tests
bun run lint         # Solidity lint via solhint (must exit 0, zero errors)
bun run fmt          # Format JS/TS files via dprint (must exit 0)

Deployment (local)

cd apps/eth-contracts
export PRIVATE_KEY=0x<deployer-private-key>
forge script script/DeployHYC.s.sol --rpc-url http://localhost:8545 --broadcast
# → outputs contract address, tx hash, gas usage

Compatible with both anvil and geth nodes at http://localhost:8545.

Self-Review Checklist

Code Quality

• Named imports used (import {Foo} from "...") — no global imports
• NatSpec tags present (@title, @author, @notice, @param) on contracts and public functions
• Explicit visibility on all functions (constructors exempt in Solidity ≥0.8)
• Gas optimization considered
• Events emitted for state changes

Security

• No reentrancy vulnerabilities
• No hardcoded private keys or sensitive values — use env vars
• .env added to .gitignore
• Access control properly implemented
• Integer overflow protection (Solidity ≥0.8 has built-in checks)

Testing

• Foundry test file (test/*.t.sol) covers all acceptance criteria
• forge test passes with zero failures
• bun run lint exits 0 with zero solhint errors

ABI / Go Bindings

After contract changes, if Go bindings are needed:

# 1. Compile
cd apps/eth-contracts
forge build

# 2. Regenerate Go bindings (if target ABI changed)
make gen-abi

Related Chain Context

• ETH (Ethereum)
• ERC-20 token standard
• Local nodes: anvil, geth at http://localhost:8545

Related Skills

• git-workflow - Branch, commit, PR workflow
• github-issue-creation - Task classification