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< import { ENSNamehash } from "./utils/ENSNamehash.sol";
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< import { TornadoStakingRewards } from "./staking/TornadoStakingRewards.sol";
< import { IENS } from "./interfaces/IENS.sol";
---
> import { TornadoStakingRewards } from "./TornadoStakingRewards.sol";
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< import "./tornado-proxy/TornadoRouter.sol";
< import "./tornado-proxy/FeeManager.sol";
---
> interface ITornadoInstance {
>   function token() external view returns (address);
> 
>   function denomination() external view returns (uint256);
> 
>   function deposit(bytes32 commitment) external payable;
> 
>   function withdraw(
>     bytes calldata proof,
>     bytes32 root,
>     bytes32 nullifierHash,
>     address payable recipient,
>     address payable relayer,
>     uint256 fee,
>     uint256 refund
>   ) external payable;
> }
> 
> interface IENS {
>   function owner(bytes32 node) external view returns (address);
> }
> 
> /*
>  * @dev Solidity implementation of the ENS namehash algorithm.
>  *
>  * Warning! Does not normalize or validate names before hashing.
>  * Original version can be found here https://github.com/JonahGroendal/ens-namehash/
>  */
> library ENSNamehash {
>   function namehash(bytes memory domain) internal pure returns (bytes32) {
>     return namehash(domain, 0);
>   }
> 
>   function namehash(bytes memory domain, uint256 i) internal pure returns (bytes32) {
>     if (domain.length <= i) return 0x0000000000000000000000000000000000000000000000000000000000000000;
> 
>     uint256 len = labelLength(domain, i);
> 
>     return keccak256(abi.encodePacked(namehash(domain, i + len + 1), keccak(domain, i, len)));
>   }
> 
>   function labelLength(bytes memory domain, uint256 i) private pure returns (uint256) {
>     uint256 len;
>     while (i + len != domain.length && domain[i + len] != 0x2e) {
>       len++;
>     }
>     return len;
>   }
> 
>   function keccak(
>     bytes memory data,
>     uint256 offset,
>     uint256 len
>   ) private pure returns (bytes32 ret) {
>     require(offset + len <= data.length);
>     assembly {
>       ret := keccak256(add(add(data, 32), offset), len)
>     }
>   }
> }
> 
> interface IFeeManager {
>   function instanceFeeWithUpdate(ITornadoInstance _instance) external returns (uint160);
> }
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<   FeeManager public immutable feeManager;
---
>   IFeeManager public immutable feeManager;
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<     bytes32 _staking,
<     bytes32 _feeManager
---
>     address _staking,
>     address _feeManager
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<     staking = TornadoStakingRewards(resolve(_staking));
<     feeManager = FeeManager(resolve(_feeManager));
---
>     staking = TornadoStakingRewards(_staking);
>     feeManager = IFeeManager(_feeManager);