Duane Scarlett duanescarlett

I have a deep passion for all things related to Information Technology. I am a Full-Stack Software Engineer.

duanescarlett / index.js

Last active April 10, 2022 00:37

Send Ether to another wallet

	ethers = require('ethers')
	require('dotenv').config()

	async function main () {
	// Connect to an EVM network
	const provider = new ethers.providers.JsonRpcProvider(`https://polygon-mainnet.g.alchemy.com/v2/${process.env.RPC_KEY}`)
	// Get the gas price
	const gasPrice = provider.getGasPrice()
	// Create a wallet object from private key
	const wallet = new ethers.Wallet(`${process.env.PRIVATE_KEY}`)

duanescarlett / main.js

Created March 10, 2022 02:11

Create a new wallet with Ethers JS

	ethers = require('ethers')
	require('dotenv').config()

	const main = async () => {
	// Create a wallet
	const wallet = ethers.Wallet.createRandom()

	console.log('Address: ', wallet.address) // Wallet Address
	console.log('Mnemonic: ', wallet.mnemonic.phrase) // Wallet Mnemonic Phrase
	console.log('Private Key: ', wallet.privateKey) // Wallet Private Key

duanescarlett / main.js

Created March 10, 2022 19:51

Import Wallet from private keys - Ethers

	ethers = require('ethers')
	require('dotenv').config()

	const main = async () => {
	// Import a wallet
	const wallet = new ethers.Wallet(process.env.PRIVATE_KEY)

	console.log('Address: ', wallet.address) // Wallet Address
	console.log('Private Key: ', wallet.privateKey) // Wallet Private Key

duanescarlett / main.js

Created March 10, 2022 19:57

Import Wallet from Mnemonic - Ethers JS

	ethers = require('ethers')
	require('dotenv').config()

	const main = async () => {
	// Import a wallet
	const wallet = new ethers.Wallet.fromMnemonic(process.env.MNEMONIC)

	console.log('Address: ', wallet.address) // Wallet Address
	console.log('Private Key: ', wallet.privateKey) // Wallet Private Key

duanescarlett / main.js

Created March 17, 2022 17:39

Convert from number to wei

	const Web3 = require('web3')
	require('dotenv').config()

	const main = async () => {
	// Connect to an EVM blockchain
	const web3 = new Web3(Web3.givenProvider \|\| process.env.INFURA_URL)

	// Convert from a decimal number to a wei number
	let amt = web3.utils.toWei('0.1', 'ether')
	console.log(amt)

duanescarlett / main.js

Created March 21, 2022 16:42

Get ether and erc-20 token balances in a wallet

	const ethers = require('ethers')
	const { toChecksumAddress } = require('ethereum-checksum-address')
	require('dotenv').config()

	const main = async () => {
	// Connect to an EVM network
	const provider = new ethers.providers.JsonRpcProvider(`https://polygon-mainnet.g.alchemy.com/v2/${process.env.RPC_KEY}`)
	// Create a wallet
	const wallet = new ethers.Wallet(process.env.PRIVATE_KEY)
	// Get a signer

duanescarlett / main.js

Created March 31, 2022 15:13

This converts from decimal to wei then from wei to decimal

	const Web3 = require('web3')
	require('dotenv').config()

	const main = async () => {
	// Connect to a EVM blockchain
	const web3 = new Web3(Web3.givenProvider \|\| process.env.INFURA_URL)

	// Convert from a decimal number to a wei number
	let amt = web3.utils.toWei('0.1', 'ether')
	console.log('Convert from a decimal number to a wei number', amt)

duanescarlett / main.js

Last active January 5, 2023 23:49

Send ERC-20 tokens to another wallet

	const ethers = require('ethers')
	const { toChecksumAddress } = require('ethereum-checksum-address')
	require('dotenv').config()

	const main = async () => {
	// Connect to an EVM network
	const provider = new ethers.providers.JsonRpcProvider(`https://polygon-mainnet.g.alchemy.com/v2/${process.env.RPC_KEY}`)
	// Create a wallet
	const wallet = new ethers.Wallet(process.env.PRIVATE_KEY)
	// Get a signer

duanescarlett / main.js

Last active June 16, 2022 15:36

Get Liquidity Pool address

	const ethers = require('ethers')
	const { toChecksumAddress } = require('ethereum-checksum-address')
	require('dotenv').config()

	const main = async () => {
	// Connect to an EVM network
	const provider = new ethers.providers.JsonRpcProvider(`https://rpc.ankr.com/bsc`)

	// Create a Factory contract abi
	const IPair = [

duanescarlett / DataTypesTutorial.sol

Created February 28, 2023 01:14

This is for a tutorial that teaches datatypes

	// SPDX-License-Identifier: GPL-3.0
	pragma solidity ^0.8.17;

	contract VariablesAndDataTypes {
	// State Variables
	int256 public oneIng = 1;
	uint256 public oneUint = 1;

	// Local Variable
	function getValue() public pure returns(uint256) {