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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

1.13.0 - 2024-01-02

Added

  • Add support for n-hop swaps in FlashUniswapV3.

Changed

  • Rename FlashSwapAndLiquidateBorrow event to FlashLiquidate.
  • Add dev NatSpec comments to libraries.
  • Add deployment commands to README.
  • Update Etherscan API keys in Hardhat config.
  • Update networks in Hardhat config.
  • Upgrade all package dependencies.

1.12.0 - 2023-04-20

Added

  • Add FlashUniswapV3 for Uniswap V3-based liquidations.

Changed

  • Update README to include FlashUniswapV3.
  • Polish the NatSpec comments.

1.11.0 - 2023-01-04

Changed

  • Upgrade to solidity-docgen v0.6.0-beta.8.
  • Upgrade to @hifi/protocol v1.11.0.

Fixed

  • Respond to audit finding regarding unlocked pragma (QSP-23).

1.10.0 - 2022-03-29

Changed

  • Refactor the directory trees in the generated types.
  • Refactor the ethers factories as per the latest typechain output.
  • Upgrade to the latest ethers packages.
  • Upgrade to @hifi/protocol v1.10.0.

Removed

  • Remove types for Erc20.

1.9.0 - 2022-03-16

Changed

  • Switch from @paulrberg/contracts to @prb/contracts.
  • Upgrade to @hifi/protocol v1.9.0.

1.8.0 - 2022-03-04

Changed

  • Refer to "other token" as "collateral".
  • Rewrite FlashSwapUniswapV2 to conform to latest API of the Hifi protocol.
  • Upgrade to @hifi/protocol v1.8.2.
  • Upgrade to @openzeppelin/contracts-upgradeable v4.5.2.

Removed

  • All *.d.ts type files.
  • Support for underlying-backed vaults in FlashSwapUniswapV2.

1.7.0 - 2021-11-25

Added

  • Allow collateral flash swap fee to be subsidized.
  • Emit repay and subsidy amounts in the FlashSwapCollateralAndLiquidateBorrow event.

Changed

  • Generalize the computation in getRepayAmount to account for the case when the flash swap fee is paid in the same token.
  • Order functions alphabetically.
  • Polish the NatSpec comments.
  • Remove the "internal" suffix in the internal functions names.
  • Rename FlashLiquidateBorrow to FlashSwapAndLiquidateBorrow.
  • Rename InsufficientProfit to TurnoutNotSatisfied.
  • Rename seizedCollateralAmount to seizeCollateralAmount.
  • Rename subsidizedUnderlyingAmount to subsidyUnderlyingAmount.
  • Refactor the getCollateralAndUnderlyingAmount function to getOtherTokenAndUnderlyingAmount.
  • Refactor the HifiFlashUniswapV2 contract to FlashUniswapV2.

1.6.1 - 2021-10-25

Changed

  • Load vars in struct in uniswapV2Call function in the HifiFlashUniswapV2 contract.
  • Split the mintAndLiquidateBorrow function in two functions: mintHTokensInternal and liquidateBorrowInternal.
  • Upgrade to @hifi/protocol v1.7.1.

Fixed

  • Calculation of repayAmount in liquidateBorrowInternal function in the HifiFlashUniswapV2 contract.

1.6.0 - 2021-10-20

Changed

  • Mark @ethersproject/abi, @ethersproject/bytes and @ethersproject/providers as normal deps instead of dev deps.
  • Move types from typechain directory to dist/types.
  • Ship declaration maps and source maps with the npm package.
  • Upgrade to @hifi/protocol v1.7.0.
  • Upgrade to @paulrberg/contracts v3.6.1.
  • Upgrade to ethers v5.5.1.
  • Upgrade to Solidity v0.8.9.

Fixed

  • Check mintedHTokenAmount against debtAmount in the HifiFlashUniswapV2 contract.

Removed

  • artifacts from npm package.

1.5.0 - 2021-09-24

Changed

  • Declutter README and add usage guides.
  • Polish the NatSpec comments.
  • Sync peer dependencies.
  • Update year in LICENSE.
  • Upgrade to @hifi/protocol v1.6.0.
  • Upgrade to @paulrberg/contracts v3.6.0.

1.4.0 - 2021-09-16

Added

  • Erc20 contract in npm package bundle.

Changed

  • Allow any UniswapV2Pair to call the HifiFlashUniswapV2 contract.
  • Polish NatSpec comments.
  • Upgrade to ethers v5.4.6.
  • Upgrade to @hifi/protocol v1.5.0.
  • Upgrade to @paulrberg/contracts v3.5.2.
  • Use "pre" and "post" prefixes instead of "old" and "new".
  • Use Solidity v0.8.7.

Fixed

  • Typos in NatSpec comments.

Removed

  • pairs mapping in the HifiFlashUniswapV2 contract.
  • pairs_ argument in the HifiFlashUniswapV2 contract constructor.

1.3.1 - 2021-08-13

Fixed

  • Remove test contracts from npm package bundle.

1.3.0 - 2021-08-13

Added

  • Ethers as a peer dependency.
  • TypeChain bindings for IErc20 and IUniswapV2Callee in the npm package bundle.
  • New HifiPoolRegistry.sol contract, to track deployed AMMs.
  • TypeChain factories in the npm package bundle.

Changed

  • Hardcode Uniswap v2 contracts to fix the TypeChain bindings bug.
  • Upgrade to @hifi/protocol@1.4.0.

Fixed

  • TypeChain binding for IErc20.

1.2.0 - 2021-08-03

Changed

  • Upgrade to @hifi/protocol@1.3.0.

1.1.0 - 2021-08-03

Changed

  • Disable the Solidity compiler metadata hash for the v0.8.6 contracts.
  • Upgrade to @hifi/protocol@1.2.0.

Fixed

  • Include the commons.ts file in the typechain folder shipped to the npm registry.

1.0.1 - 2021-07-30

Changed

  • Affix all dependency versions.

1.0.0 - 2021-06-30

Added

  • First release of the package.