@sudobility/auctions_contracts

@sudobility/auctions_contracts

Multi-chain auction system supporting Solana (Rust/Anchor) and EVM (Solidity/Hardhat). Implements Traditional, Dutch, and Penny auction types.

Installation

bun install

Usage

The package provides a TypeScript SDK with four export points:

import { OnchainAuctionClient } from '@sudobility/auctions_contracts';          // Unified client
import { EvmAuctionClient } from '@sudobility/auctions_contracts/evm';          // EVM-specific (viem)
import { SolanaAuctionClient } from '@sudobility/auctions_contracts/solana';    // Solana-specific (web3.js)
import { ... } from '@sudobility/auctions_contracts/react-native';              // React Native entry

Auction Types

• Traditional: English-style ascending bids with reserve price and minimum increment
• Dutch: Descending price from start to minimum; first buyer wins immediately
• Penny: Fixed bid increment (pay-to-bid); each bid resets a 5-minute timer

Supported Networks

• EVM: Ethereum, Sepolia, Polygon, Optimism, Base, Arbitrum
• Solana: Localnet, Devnet, Mainnet-beta

Development

bun run build              # Build everything (EVM + Solana + Unified + React Native)
bun run build:ci           # Build unified + react-native only (no EVM/Solana compile)
bun run compile:evm        # Compile Solidity contracts only
bun run test               # Run EVM tests (Hardhat + viem)
bun run test:solana        # Run Solana tests (cargo test)
bun run test:ci            # Build unified then run unified tests directly
bun run lint               # ESLint check
bun run lint:fix           # ESLint with auto-fix
bun run typecheck          # TypeScript compilation check
bun run format             # Prettier formatting
bun run clean              # Hardhat clean

Deployment

bun run deploy:evm:local       # Deploy to Hardhat localhost
bun run deploy:evm:sepolia     # Deploy to Sepolia
bun run deploy:solana:devnet   # Deploy to Solana devnet

Architecture

EVM (Solidity 0.8.24)

• UUPS Upgradeable Proxy pattern
• Storage gap (__gap) for future slot reservation
• CEI pattern, SafeERC20, reentrancy guards

Solana (Rust/Anchor 0.28.0)

• PDA-based accounting with deterministic address derivation
• Borsh serialization, saturating arithmetic

Unified Client

The OnchainAuctionClient uses dynamic import() to lazy-load platform-specific clients (EVM or Solana) on first use, keeping bundle size minimal.

Key Constants

Constant	Value
Fee Rate	0.5% (50 basis points)
Max Fee Rate	10% (1000 basis points)
Acceptance Period	24 hours
Penny Timer	5 minutes
Max Items Per Auction	255

License

BUSL-1.1