monokh

const { Token, WETH9, CurrencyAmount, TradeType } = require('@uniswap/sdk-core')
const { Route, Trade, Pair } = require('@uniswap/v2-sdk')
const ethers = require('ethers')

;(async () => {
  const CHAIN_ID = 1
  const daiAddress = '0x6B175474E89094C44Da98b954EedeAC495271d0F'
  const tokenA = WETH9[CHAIN_ID]
  const tokenB = new Token(CHAIN_ID, daiAddress, 18, 'DAI', 'DAI')
  const pairAddress = Pair.getAddress(tokenA, tokenB)

monokh

// SPDX-License-Identifier: MIT
// optimize=true&runs=200&evmVersion=null&version=soljson-v0.7.4+commit.3f05b770.js
pragma solidity ^0.7.4;
interface ERC20 {
  function balanceOf(address tokenOwner) external view returns (uint balance);
  function transfer(address to, uint tokens) external returns (bool success);
}
contract HTLC {
  address payable recipientAddress = 0x1111111111111111111111111111111111111111;
  address payable refundAddress = 0x2222222222222222222222222222222222222222;