Ahmed Castro Turupawn

Swap Tokens on Sushi (Uniswap V2 Fork)

SushiSwap is a popular Uniswap V2 fork that allows for simple token swaps using the ISushiRouter interface. Below is an example of swapping an ERC20 token for ETH on Scroll Mainnet.

Learn more at UniV2 Docs.

        _approve(address(this), address(router), amountToSwap);
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amountToSwap,

import Aside from "../../../../../components/Aside.astro" import ClickToZoom from "../../../../../components/ClickToZoom.astro" import ToggleElement from "../../../../../components/ToggleElement.astro" import paymentDApp from "../../../../../assets/images/developers/stablecoin-payments-tutorial/payment-dapp.png" import nftRecipt from "../../../../../assets/images/developers/stablecoin-payments-tutorial/nft-recipt.png"

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Install the dependencies

curl -L https://raw.githubusercontent.com/noir-lang/noirup/refs/heads/main/install | bash
noirup
curl -L https://raw.githubusercontent.com/AztecProtocol/aztec-packages/refs/heads/master/barretenberg/bbup/install | bash
bbup

	irenee@fedora:~/Projects/borrame/testi$ cat Cargo.toml
	[package]
	name = "testi"
	version = "0.1.0"
	edition = "2024"

	[dependencies]
	ghost-crab = "0.10.1"
	irenee@fedora:~/Projects/borrame/testi$ cargo build
	Compiling zstd-sys v2.0.15+zstd.1.5.7

	// SPDX-License-Identifier: MIT
	pragma solidity ^0.8.20;

	// IERC20 interface needed to interact with USDC and WETH
	interface IERC20 {
	function approve(address spender, uint256 amount) external returns (bool);
	function balanceOf(address account) external view returns (uint256);
	function transfer(address recipient, uint256 amount) external returns (bool);
	function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
	}

	import { useAccount, useConnect, useDisconnect, useWriteContract, useConfig } from 'wagmi'
	import { parseEther } from 'viem'
	import { createPublicClient, http } from 'viem'
	import { scrollSepolia } from 'viem/chains'
	import { useEffect, useState } from 'react'
	import { waitForTransactionReceipt } from '@wagmi/core'

	export const publicClient = createPublicClient({
	chain: scrollSepolia,
	transport: http()

	require('dotenv').config();
	const express = require('express');
	const Web3 = require('web3');
	const app = express();
	const port = process.env.PORT \|\| 3000;

	// Initialize Web3 with WebSocket provider
	const web3 = new Web3(new Web3.providers.WebsocketProvider(process.env.WSS_URL));
	const contractAddress = process.env.CONTRACT_ADDRESS;
	const contractABI = require('../json_abi/MyContract.json');

	$ ~/Projects/fe/fe-v2/target/debug/fe check .
	error: unexpected token while parsing field definition
	┌─ /home/irenee/Projects/fe-token-demos/master/src/ERC20.fe:5:35
	│
	5 │ pub balance: solidity::Mapping<evm::Address, u256>,
	│ ^ unexpected token
	│
	= expected a newline; found symbol `<` instead

	error: unexpected token while parsing field definition

	// SPDX-License-Identifier: MIT
	pragma solidity ^0.8.0;

	contract P256Verifier {
	address constant P256_PRECOMPILE = address(0x0100);

	/// @notice Verifies a secp256r1 signature using the EIP-7212 precompile.
	/// @param hash The 32-byte message hash that was signed.
	/// @param r The 32-byte r component of the signature.
	/// @param s The 32-byte s component of the signature.

	use ingot::evm
	use ingot::codec::{ Cursor, Encode, Decode }
	use ingot::evm::{ MemBuffer }
	use ingot::mydefault::{ MyDefault }
	use ingot::option::{ Option }

	// Constants for the hash table
	const TABLE_SIZE: usize = 32 // Fixed size table
	const EMPTY: u256 = 0
	const DELETED: u256 = 1

Ahmed Castro Turupawn

Swap Tokens on Sushi (Uniswap V2 Fork)

Install the dependencies

Create a new project