Dealer smart contract

This repository contains a smart contract called "Dealer" with some test cases. Read description and purposes here.

Install and run instructions

Clone this repository

git clone https://github.com/flashbots/dealer-smart-contract

Install dependencies. From /dealer-smart-contract run

npm install

Patch Uniswap v2.

Note: when running the tests, Uniswap may throw an error that can be fixed with this patch. The patched code seems to hurt the intention of the original code but it is good enough for testing the Dealer contract. The original code can be read as commented code at the function pairFor in the patched file.

Replace the file

node_modules/@uniswap/v2-periphery/contracts/libraries/UniswapV2Library.sol

by the file

contracts/patched/UniswapV2Library.solx

The extension .solx prevents compilation. The replacement has to be renamed to .sol.

To run tests:

npx hardhat test

or

REPORT_GAS=true npx hardhat test

to display gas costs.