Added #

• ✨ Initial release of web3dart_get_fee_data package
• 🎯 getFeeData() function to retrieve current Ethereum fee data
• 📊 FeeData class supporting both legacy and EIP-1559 transactions
• 🔄 Automatic detection of EIP-1559 vs legacy network support
• 🛡️ Comprehensive error handling for network and RPC errors
• 📚 Full API documentation with dartdoc comments
• ✅ Comprehensive test suite with real network integration tests
• 🎨 ethers.js compatible API design
• 🌐 Support for all Ethereum-compatible networks (Mainnet, Polygon, Arbitrum, etc.)

Features #

• EIP-1559 Support: Returns maxFeePerGas and maxPriorityFeePerGas for supported networks
• Legacy Compatibility: Automatic fallback to traditional gasPrice for older networks
• Type Safety: Full Dart type safety with nullable types for optional parameters
• Network Agnostic: Works with any Ethereum-compatible network via Web3Client

Dependencies #

• web3dart: ^3.0.1 - Core Ethereum client functionality
• http: ^1.4.0 - HTTP client for RPC calls

Example Usage #

final client = Web3Client('https://eth.llamarpc.com', Client());
final feeData = await getFeeData(client);

if (feeData.maxFeePerGas != null) {
  // EIP-1559 network
  print('Max Fee: ${feeData.maxFeePerGas} wei');
  print('Priority Fee: ${feeData.maxPriorityFeePerGas} wei');
} else {
  // Legacy network
  print('Gas Price: ${feeData.gasPrice} wei');
}

[Unreleased] #

Planned #

• 🔧 Add gas estimation helpers
• 📈 Add fee history analysis
• ⚡ Add caching mechanism for fee data
• 🎯 Add network-specific optimizations

Release Notes #

1.0.0 - Initial Public Release #

This is the first stable release of web3dart_get_fee_data. The package provides a simple, reliable way to get current Ethereum fee data with full support for both EIP-1559 and legacy transactions.

Key Features:

• Simple API mirroring ethers.js getFeeData()
• Automatic EIP-1559 detection and fallback
• Comprehensive documentation and examples
• Well-tested with real network integration

Compatibility:

• Dart SDK: ^3.8.1
• All Ethereum-compatible networks
• Both EIP-1559 and legacy transaction types

For more information, see the README.md and API documentation.