Features #

• ✨ EIP-7702 Core Implementation (4b290f5)

  • Full Dart implementation of EIP-7702 typed transactions (type 0x04).
  • Support for constructing:
    • Unsigned7702Tx
    • Signed7702Tx
    • EIP-7702 authorization tuples.
  • RLP encoding for:
    • EIP-1559 base fields
    • AccessLists (EIP-2930 compatible)
    • authorizationList (EIP-7702-specific)
  • Signer Abstractions:
    • Signer.raw(Uint8List) for raw private keys.
    • Signer.eth(EthPrivateKey) for web3dart private keys.
  • Automatic v/yParity normalization for ECDSA:
    • yParity stored as 0/1 for EIP-7702.
    • v normalized to 27/28 for compatibility with ecRecover.

• 🧰 Builder Layer (37b4746)

  • AuthorizationBuilder
    • Builds unsigned authorization messages with resolved chain ID + nonce.
    • Produces signed authorization tuples.
    • buildAndSignIfNeeded automatically avoids redundant delegation.
  • SetCodeTxBuilder
    • Builds full 0x04 typed transactions including: Nonce resolution, EIP-1559 gas estimation, AccessList, AuthorizationList
  • Delegation Detection
    • Implements correct parsing of EIP-7702 delegation stubs:
      • Detects 0xef0100 || <impl> prefix.
      • Extracts delegated implementation address.

• 🚀 High-Level Client (53237ff)

  • Eip7702Client provides simple entrypoints:
    • delegateAndCall → Builds + signs + broadcasts a 7702 transaction, performing delegation if needed.
    • revokeDelegation → Clears delegation using 7702 SetCode flow.

• 🔌 4337 Integration Helpers : canonicalizeUserOp for binding 7702 authorization with ERC-4337 user operations. (7234636)

• docs: add comprehensive documentation (c5d0cfa)

• test: add comprehensive test suite for EIP-7702 implementation (d369b3f)