@looksrare/contracts-libs

This repository contains a set of Solidity contracts that can be used across contracts for purposes such as verifying signatures, protecting contracts against reentrancy attacks, low-level call functions, and a library for managing the ownership of a contract.

It also contains generic contract interfaces (for EIP/ERC) that can be used.

Installation

# Yarn
yarn add @looksrare/contracts-libs

# NPM
npm install @looksrare/contracts-libs

NPM package

The NPM package contains the following:

• Solidity smart contracts (".sol")
• ABIs (".json")

Current contracts

Name	Description	Type	Latest version	Audited?
OwnableTwoSteps	Contract for managing ownership of a smart contract. The transfer of ownership is done in a 2-step process.	Contract	2.5.0	Yes
SignatureCheckerCalldata	Contract for verifying the validity of a (calldata) signature for EOA (64-byte, 65-byte signatures) and EIP-1271.	Contract	3.0.0	Yes
SignatureCheckerMemory	Contract for verifying the validity of a (memory) signature for EOA (64-byte, 65-byte signatures) and EIP-1271.	Contract	3.0.0	Yes
ReentrancyGuard	Contract with a modifier to prevent reentrancy calls.	Contract	2.4.4	Yes
PackedReentrancyGuard	Contract with a modifier to prevent reentrancy calls. Adapted from ReentrancyGuard.	Contract	2.5.1	Yes
LowLevelETHTransfer	Low-level call function to transfer ETH	Contract	2.4.4	Yes
LowLevelETHReturnETHIfAny	Low-level call function to return all ETH left	Contract	2.4.4	Yes
LowLevelETHReturnETHIfAnyExceptOneWei	Low-level call function to return all ETH left except one wei	Contract	2.4.4	Yes
LowLevelWETH	Low-level call functions to transfer ETH with an option to wrap to WETH if the original ETH transfer fails within a gas limit	Contract	2.4.4	Yes
LowLevelERC20Approve	Low-level call functions for ERC20 approve functions	Contract	2.4.4	Yes
LowLevelERC20Transfer	Low-level call functions for ERC20 transfer functions	Contract	2.4.4	Yes
LowLevelERC721Transfer	Low-level call functions for ERC721 functions	Contract	2.4.4	Yes
LowLevelERC1155Transfer	Low-level call functions for ERC1155 functions	Contract	2.4.4	Yes
ProtocolFee	Contract for defining protocol fee recipient and basis points	Contract	3.2.0	No

About this repo

Structure

It is a hybrid Hardhat repo that also requires Foundry to run Solidity tests powered by the ds-test library.

To install Foundry, please follow the instructions here.

Run tests

• Solidity tests are included in the foundry folder in the test folder.

Example of Foundry/Forge commands

forge build
forge test
forge test -vv
forge tree

Example of other commands

npx eslint '**/*.{js,ts}'
npx eslint '**/*.{js,ts}' --fix
npx prettier '**/*.{json,sol,md}' --check
npx prettier '**/*.{json,sol,md}' --write
npx solhint 'contracts/**/*.sol'
npx solhint 'contracts/**/*.sol' --fix

Coverage

It is required to install lcov.

brew install lcov

To run the coverage report, the below command can be executed.

forge coverage --report lcov
LCOV_EXCLUDE=("test/*" "contracts/interfaces/*" "contracts/errors/*.sol")
echo $LCOV_EXCLUDE | xargs lcov --output-file lcov-filtered.info --remove lcov.info
genhtml lcov-filtered.info --output-directory out
open out/index.html