Rabby Wallet's integration of EIP-7702 via its landmark PR delivers a battle-tested foundation for custom migrations, letting developers fork and tweak delegation logic for specialized wallets. This PR merge guide targets precision engineers building Rabby EIP-7702 PR implementation into trading dapps, where real-time address signing and dust sweeps prevent slippage akin to forex scalps on tight spreads.
The PR introduces utilities for delegation, revocation paths, and EOA code setting per EIP-7702 specs. Unlike vanilla EOAs, it enables session keys and batched txs without address migration, crucial for custom Rabby EIP-7702 migration. Revocation safeguards against over-delegation, a nod to security in volatile markets.
Rabby EIP-7702 PR: Core Changes Dissected
At its heart, the PR (#1371) patches wallet logic to handle type 0x04 transactions, attaching smart contract code to EOAs temporarily. Key diffs include signer updates for delegation auth and UI flows for user consent on code pointers. For forks, this means cherry-picking commits that touch transaction builders and account abstraction hooks.
Security audits from Least Authority highlight revoke paths: issues arise only if users chain delegations improperly, now mitigated with explicit nonce checks. This setup supports Rabby dust sweep support, bundling micro-transfers efficiently.
Delegation and Revocation Functions
Core Solidity logic from Rabby Wallet.sol for EIP-7702 delegation via code pointer and nonce-secured revocation:
```solidity
/// @notice Sets the delegated code address for EIP-7702 delegation
/// @param codeAddr Address whose code to delegate execution to
/// @param authNonce Authorization nonce to prevent replays
function setCodeDelegation(address codeAddr, uint256 authNonce) external {
require(msg.sender == owner, "Only owner");
require(authNonce == _nextAuthNonce, "Invalid auth nonce");
_nextAuthNonce++;
_delegatedCode = codeAddr;
emit CodeDelegationSet(codeAddr, authNonce);
}
/// @notice Revokes the current code delegation
/// @param revNonce Revocation nonce
function revokeCodeDelegation(uint256 revNonce) external {
require(msg.sender == owner, "Only owner");
require(revNonce == _nextRevNonce, "Invalid rev nonce");
_nextRevNonce++;
_delegatedCode = address(0);
emit CodeDelegationRevoked(revNonce);
}
```Nonce increments ensure replay protection; _delegatedCode storage slot drives runtime delegation.
Inspecting the diff reveals utils for EIP-7702 tx serialization, ensuring compatibility with viem and wagmi updates in RabbyKit. Developers gain EIP-7702 Rabby custom build leverage, overlaying proprietary modules like multi-timeframe trade bundlers.
Setting Up Your Fork for PR Merge
Fork Rabby's repo directly from GitHub, targeting the wallet extension branch post-PR merge. Sync upstream to pull EIP-7702 commits, then resolve any yarn. lock conflicts from viem upgrades. This prep phase ensures your wallet fork EIP-7702 address signing inherits audited code without regressions.
Merge EIP-7702 into Rabby Wallet: Fork-to-Test Guide
Post-fork, audit custom hooks: extend signer. verify for delegation sigs, validating chainId and nonce. Integrate with your dapp's RPC for testnet deploys, simulating Pectra hardfork conditions. Precision here mirrors intraday TA, aligning entries on confirmed PR diffs.
Merging PR: Handling Custom Overrides
Rebase your feature branch onto upstream/main, squashing migration-specific commits. Conflicts cluster in src/transaction and src/wallet folders; prioritize Rabby's delegation resolver. Post-merge, tweak UI for custom gas sponsors, enabling sponsored sweeps in low-balance scenarios.
Test vectors cover delegation attach/detach, batching swaps, and revocation under replay attacks. Foundry scripts from PR verify cheatcode mocks for EOA code setting. For trading dapps, layer in real-time feeds, ensuring EIP-7702 txs execute sub-second for scalps.
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