From ffee81ba7f523bbac0bf3836f49d19cfa313d67a Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Fri, 21 May 2021 16:34:47 -0700
Subject: [PATCH 01/11] * Add typescript deps * Port to typescript

---
 hardhat.config.js => hardhat.config.ts | 29 ++++++++++------------
 package.json                           | 13 +++++++---
 scripts/deploy.js                      | 33 --------------------------
 scripts/deploy.ts                      | 20 ++++++++++++++++
 4 files changed, 43 insertions(+), 52 deletions(-)
 rename hardhat.config.js => hardhat.config.ts (72%)
 delete mode 100644 scripts/deploy.js
 create mode 100644 scripts/deploy.ts

diff --git a/hardhat.config.js b/hardhat.config.ts
similarity index 72%
rename from hardhat.config.js
rename to hardhat.config.ts
index e974ed6..f747725 100644
--- a/hardhat.config.js
+++ b/hardhat.config.ts
@@ -1,29 +1,26 @@
-require("@nomiclabs/hardhat-waffle");
-require("@nomiclabs/hardhat-ethers");
+import { task } from "hardhat/config"
+import { SignerWithAddress } from "@nomiclabs/hardhat-ethers/signers"
+import { BigNumber } from "ethers"
+import "@nomiclabs/hardhat-waffle"
 
-// This is a sample Hardhat task. To learn how to create your own go to
-// https://hardhat.org/guides/create-task.html
-task("accounts", "Prints the list of accounts", async () => {
-  const accounts = await ethers.getSigners();
+task("accounts", "Prints the list of accounts", async (args, hre): Promise<void> => {
+  const accounts: SignerWithAddress[] = await hre.ethers.getSigners()
 
   for (const account of accounts) {
-    console.log(account.address);
+    console.log(account.address)
   }
 });
 
-task("balances", "Prints the list of AVAX account balances", async () => {
-  const accounts = await ethers.getSigners();
+task("balances", "Prints the list of AVAX account balances", async (args, hre): Promise<void> => {
+  const accounts: SignerWithAddress[] = await hre.ethers.getSigners()
 
   for (const account of accounts) {
-    balance = await ethers.provider.getBalance(account.address);
-    console.log(account.address, "has balance", balance.toString());
+    const balance: BigNumber = await hre.ethers.provider.getBalance(account.address)
+    console.log(`${account.address} has balance ${balance.toString()}`)
   }
 });
 
-/**
- * @type import('hardhat/config').HardhatUserConfig
- */
-module.exports = {
+export default {
   solidity: {
     compilers: [
       {
@@ -78,4 +75,4 @@ module.exports = {
       accounts: []
     }
   }
-};
+}
diff --git a/package.json b/package.json
index 207f315..1803077 100644
--- a/package.json
+++ b/package.json
@@ -4,12 +4,16 @@
     "@nomiclabs/hardhat-ethers": "^2.0.1",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
     "@openzeppelin/contracts": "^3.4.0",
+    "@types/chai": "^4.2.18",
+    "@types/mocha": "^8.2.2",
+    "@types/node": "^15.6.0",
     "avalanche": "3.2.0",
-    "chai": "^4.2.0",
+    "chai": "^4.3.4",
     "ethereum-waffle": "^3.2.1",
     "ethereumjs-tx": "^2.1.2",
     "ethers": "^5.0.24",
-    "hardhat": "^2.0.6",
+    "hardhat": "2.3.0",
+    "ts-node": "^9.1.1",
     "web3": "^1.3.1"
   },
   "version": "1.0.0",
@@ -27,7 +31,7 @@
     "console": "npx hardhat console",
     "pretest": "yarn compile",
     "test": "npx hardhat test",
-    "deploy": "npx hardhat run scripts/deploy.js",
+    "deploy": "npx hardhat run scripts/deploy.ts",
     "send-avax": "npx hardhat run scripts/sendAvax.js",
     "lint": "prettier ./test/**/*.ts --check",
     "prepublishOnly": "yarn test",
@@ -35,5 +39,8 @@
     "accounts": "npx hardhat accounts",
     "balances": "npx hardhat balances",
     "fund-cchain-addresses": "npx hardhat run scripts/fund-cchain-addresses.js"
+  },
+  "dependencies": {
+    "typescript": "^4.2.4"
   }
 }
diff --git a/scripts/deploy.js b/scripts/deploy.js
deleted file mode 100644
index 072f44f..0000000
--- a/scripts/deploy.js
+++ /dev/null
@@ -1,33 +0,0 @@
-// We require the Hardhat Runtime Environment explicitly here. This is optional 
-// but useful for running the script in a standalone fashion through `node <script>`.
-//
-// When running the script with `hardhat run <script>` you'll find the Hardhat
-// Runtime Environment's members available in the global scope.
-const hre = require("hardhat");
-
-async function main() {
-  // Hardhat always runs the compile task when running scripts with its command
-  // line interface.
-  //
-  // If this script is run directly using `node` you may want to call compile 
-  // manually to make sure everything is compiled
-  // await hre.run('compile');
-
-  // We get the contract to deploy
-  const Coin = await hre.ethers.getContractFactory("CustomCoin");
-  const coin = await Coin.deploy();
-
-  await coin.deployed();
-
-  console.log("Coin deployed to:", coin.address);
-  
-}
-
-// We recommend this pattern to be able to use async/await everywhere
-// and properly handle errors.
-main()
-  .then(() => process.exit(0))
-  .catch(error => {
-    console.error(error);
-    process.exit(1);
-  });
diff --git a/scripts/deploy.ts b/scripts/deploy.ts
new file mode 100644
index 0000000..069686a
--- /dev/null
+++ b/scripts/deploy.ts
@@ -0,0 +1,20 @@
+import { 
+  Contract, 
+  ContractFactory 
+} from "ethers"
+import { ethers } from "hardhat"
+
+const main = async(): Promise<any> => {
+  const Coin: ContractFactory = await ethers.getContractFactory("CustomCoin")
+  const coin: Contract = await Coin.deploy()
+
+  await coin.deployed()
+  console.log(`Coin deployed to: ${coin.address}`)
+}
+
+main()
+.then(() => process.exit(0))
+.catch(error => {
+  console.error(error)
+  process.exit(1)
+})

From 3841b23a747b6f87aaee066580cd31eaf3b51731 Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Fri, 21 May 2021 16:40:09 -0700
Subject: [PATCH 02/11] Update docs.

---
 README.md    | 14 +++++++-------
 package.json |  3 +++
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/README.md b/README.md
index ba01698..795d0f6 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ The goal of this guide is to lay out a best-practices regarding writing, testing
 
 ### NodeJS and Yarn
 
-First install the LTS of [nodejs](https://nodejs.org/en) which is `14.15.4` at the time of writing. NodeJS bundles `npm`.
+First install the LTS of [nodejs](https://nodejs.org/en) which is `14.17.0` at the time of writing. NodeJS bundles `npm`.
 
 Next install [yarn](https://yarnpkg.com):
 
@@ -54,14 +54,14 @@ Run `yarn compile` to make sure your project compiles.
 
 ## Prepare to Deploy
 
-Edit the deployment script in `scripts/deploy.js`
+Edit the deployment script in `scripts/deploy.ts`
 
 ## Deploy
 
 Hardhat enables deploying to multiple environments. In [`package.json`](./package.json) there is a script for deploying.
 
 ```json
-"deploy": "npx hardhat run scripts/deploy.js",
+"deploy": "npx hardhat run scripts/deploy.ts",
 ```
 
 You can chose which environment that you want to deploy to by passing in the `--network` flag with `avash`, `fuji`, or `mainnet` for each respective environment. If you don't pass in `--network` then it will default to the hardhat network.  For example, if you want to deploy to mainnet
@@ -74,7 +74,7 @@ When you deploy to `avash`, `fuji` or `mainnet` you can add your private key(s)
 
 ## Hardhat Tasks
 
-You can define custom hardhat tasks in [hardhat.config.js](./hardhat.config.js). There are two tasks included as examples&mdash;`accounts` and `balances` both of which have scripts in [package.json](./package.json).
+You can define custom hardhat tasks in [hardhat.config.ts](./hardhat.config.ts). There are two tasks included as examples&mdash;`accounts` and `balances` both of which have scripts in [package.json](./package.json).
 
 ```json
 "accounts": "npx hardhat accounts",
@@ -206,7 +206,7 @@ RunScript: Running scripts/five_node_staking.lua
 RunScript: Successfully ran scripts/five_node_staking.lua
 ```
 
-Now you have a local avalanche network with 5 staking nodes. Next transfer 1000 AVAX from the X-Chain to each of the 10 avash accounts in `hardhat.config.js`.
+Now you have a local avalanche network with 5 staking nodes. Next transfer 1000 AVAX from the X-Chain to each of the 10 avash accounts in `hardhat.config.ts`.
 
 ```zsh
 cd /path/to/avalanche-smart-contract-quickstart
@@ -284,12 +284,12 @@ Deploy the contract to the `avash` local network
 ```zsh
 yarn deploy --network avash
 yarn run v1.22.4
-$ npx hardhat run scripts/deploy.js --network avash
+$ npx hardhat run scripts/deploy.ts --network avash
 Coin deployed to: 0x789a5FDac2b37FCD290fb2924382297A6AE65860
 ✨  Done in 1.28s.
 ```
 
-We now have a token deployed at `0x789a5FDac2b37FCD290fb2924382297A6AE65860`. The `constructor` function of [this token](contracts/Coin.sol#L15) `mint`s the `TOTAL_BALANCE` to the account which called the contract which is the first address in the `avash` `accounts` array in [hardhat.config.js](./hardhat.config.js).
+We now have a token deployed at `0x789a5FDac2b37FCD290fb2924382297A6AE65860`. The `constructor` function of [this token](contracts/Coin.sol#L15) `mint`s the `TOTAL_BALANCE` to the account which called the contract which is the first address in the `avash` `accounts` array in [hardhat.config.ts](./hardhat.config.ts).
 
 ```json
   "0x56289e99c94b6912bfc12adc093c9b51124f0dc54ac7a766b2bc5ccf558d8027", 
diff --git a/package.json b/package.json
index 1803077..ab11a25 100644
--- a/package.json
+++ b/package.json
@@ -42,5 +42,8 @@
   },
   "dependencies": {
     "typescript": "^4.2.4"
+  },  
+  "engines": {
+    "node": ">=14.17.0"
   }
 }

From cad8fe07c34959561ae6fe572d241b83bc425537 Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Fri, 21 May 2021 17:02:01 -0700
Subject: [PATCH 03/11] Syntax.

---
 hardhat.config.ts | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/hardhat.config.ts b/hardhat.config.ts
index f747725..19714c0 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -5,20 +5,18 @@ import "@nomiclabs/hardhat-waffle"
 
 task("accounts", "Prints the list of accounts", async (args, hre): Promise<void> => {
   const accounts: SignerWithAddress[] = await hre.ethers.getSigners()
-
-  for (const account of accounts) {
+  accounts.forEach((account: SignerWithAddress): void => {
     console.log(account.address)
-  }
-});
+  })
+})
 
 task("balances", "Prints the list of AVAX account balances", async (args, hre): Promise<void> => {
   const accounts: SignerWithAddress[] = await hre.ethers.getSigners()
-
-  for (const account of accounts) {
+  accounts.forEach(async (account: SignerWithAddress): Promise<void> => {
     const balance: BigNumber = await hre.ethers.provider.getBalance(account.address)
     console.log(`${account.address} has balance ${balance.toString()}`)
-  }
-});
+  })
+})
 
 export default {
   solidity: {

From 7b2cda3afccc5d06b8f1abb0081d08c732b7ccf7 Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Fri, 21 May 2021 17:25:49 -0700
Subject: [PATCH 04/11] Add ERC20 script.

---
 package.json     |  1 +
 scripts/erc20.ts | 45 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 scripts/erc20.ts

diff --git a/package.json b/package.json
index ab11a25..b279565 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,7 @@
     "pretest": "yarn compile",
     "test": "npx hardhat test",
     "deploy": "npx hardhat run scripts/deploy.ts",
+    "erc20": "npx hardhat run scripts/erc20.ts",
     "send-avax": "npx hardhat run scripts/sendAvax.js",
     "lint": "prettier ./test/**/*.ts --check",
     "prepublishOnly": "yarn test",
diff --git a/scripts/erc20.ts b/scripts/erc20.ts
new file mode 100644
index 0000000..6de97e6
--- /dev/null
+++ b/scripts/erc20.ts
@@ -0,0 +1,45 @@
+import { 
+    BigNumber,
+    Contract 
+} from "ethers"
+import { ethers } from "hardhat"
+
+const coinName: string = "CustomCoin"
+const coinAddr: string = "0x52C84043CD9c865236f11d9Fc9F56aa003c1f922"
+const walletAddress: string = "0x8db97C7cEcE249c2b98bDC0226Cc4C2A57BF52FC"
+
+const main = async(): Promise<any> => {
+  const contract: Contract = await ethers.getContractAt(coinName, coinAddr)
+  const contractAddress: string = contract.address 
+  console.log(`Address: ${contractAddress}`)
+
+  const name: string = await contract.name() 
+  console.log(`Name: ${name}`)
+
+  const symbol: string = await contract.symbol() 
+  console.log(`Symbol: ${symbol}`)
+
+  const decimals: string = await contract.decimals() 
+  console.log(`Decimals: ${decimals}`)
+
+  const balance: BigNumber = await contract.balanceOf(walletAddress)
+  console.log(`Balance of ${walletAddress}: ${balance.toString()}`)
+
+  const totalSupply: BigNumber = await contract.totalSupply()
+  console.log(`Total supply: ${totalSupply.toString()}`)
+
+  const tx = await contract.transfer(walletAddress, balance)
+  console.log("--TX--")
+  console.log(tx)
+  console.log("--TX RECEIPT--")
+
+  const txReceipt = await tx.wait()
+  console.log(txReceipt)
+}
+
+main()
+.then(() => process.exit(0))
+.catch(error => {
+  console.error(error)
+  process.exit(1)
+})
\ No newline at end of file

From 8fe0d5875f74eb7a308b7a5f39a5ae9de50a9e4f Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Fri, 21 May 2021 17:27:14 -0700
Subject: [PATCH 05/11] Formatting.

---
 scripts/erc20.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/erc20.ts b/scripts/erc20.ts
index 6de97e6..2470372 100644
--- a/scripts/erc20.ts
+++ b/scripts/erc20.ts
@@ -31,9 +31,9 @@ const main = async(): Promise<any> => {
   const tx = await contract.transfer(walletAddress, balance)
   console.log("--TX--")
   console.log(tx)
-  console.log("--TX RECEIPT--")
 
   const txReceipt = await tx.wait()
+  console.log("--TX RECEIPT--")
   console.log(txReceipt)
 }
 

From fb8d3021bd7cb0edbf9363325a073eff7a568413 Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Sat, 22 May 2021 10:43:50 -0700
Subject: [PATCH 06/11] * Rename Coin.sol -> ERC20.sol * Update ERC20.sol   *
 Build against Solidity v0.8.0   * Import Open Zeppelin Access Control   *
 Setup `DEFAULT_ADMIN_ROLE` for the creator of the contract   * Use `decimals`
 function   * Add mint and burn functionality     * Ensure that only contract
 creator can mint/burn * Update ERC721 syntax * Bump @openzeppelin/contracts
 dep * Add example script to send AVAX from ethers wallet signer * Add example
 script to send AVAX from JSONRPC provider * Update deploy script * Add
 example script demoing how to interact w/ ERC20 contract

---
 contracts/Coin.sol              | 17 --------------
 contracts/ERC20.sol             | 29 +++++++++++++++++++++++
 contracts/ERC721.sol            |  2 +-
 package.json                    |  5 ++--
 scripts/deploy.ts               |  2 +-
 scripts/erc20.ts                | 22 ++++++++++++++----
 scripts/sendAvax.js             | 38 ------------------------------
 scripts/sendAvaxJSONProvider.ts | 27 ++++++++++++++++++++++
 scripts/sendAvaxWalletSigner.ts | 41 +++++++++++++++++++++++++++++++++
 9 files changed, 120 insertions(+), 63 deletions(-)
 delete mode 100644 contracts/Coin.sol
 create mode 100644 contracts/ERC20.sol
 delete mode 100644 scripts/sendAvax.js
 create mode 100644 scripts/sendAvaxJSONProvider.ts
 create mode 100644 scripts/sendAvaxWalletSigner.ts

diff --git a/contracts/Coin.sol b/contracts/Coin.sol
deleted file mode 100644
index e3eba2b..0000000
--- a/contracts/Coin.sol
+++ /dev/null
@@ -1,17 +0,0 @@
-//SPDX-License-Identifier: mit
-pragma solidity >= 0.6.2 < 0.8.0;
-
-import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
-
-contract CustomCoin is ERC20 {
-    string private TOKEN_NAME = "My ERC-20 Token";
-    string private TOKEN_SYMBOL = "SYM";
-
-    uint8 private constant TOKEN_DECIMALS = 2;
-    uint private constant TOTAL_SUPPLY = 1000000 * (10 ** TOKEN_DECIMALS);
-
-    constructor() ERC20(TOKEN_NAME, TOKEN_SYMBOL) {
-        _setupDecimals(TOKEN_DECIMALS);
-        _mint(msg.sender, TOTAL_SUPPLY);
-    }
-}
\ No newline at end of file
diff --git a/contracts/ERC20.sol b/contracts/ERC20.sol
new file mode 100644
index 0000000..5f9ad69
--- /dev/null
+++ b/contracts/ERC20.sol
@@ -0,0 +1,29 @@
+//SPDX-License-Identifier: mit
+pragma solidity ^0.8.0;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/access/AccessControl.sol";
+
+contract ExampleERC20 is ERC20, AccessControl {
+  string private TOKEN_NAME = "Example ERC20 Token";
+  string private TOKEN_SYMBOL = "XMPL";
+
+  uint private constant TOTAL_SUPPLY = 123456789;
+
+  constructor() ERC20(TOKEN_NAME, TOKEN_SYMBOL) {
+    _mint(msg.sender, TOTAL_SUPPLY);
+    _setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
+  }
+
+  function decimals() public view virtual override returns (uint8) {
+   return 6;
+  }
+
+  function mint(address to, uint256 amount) public onlyRole(DEFAULT_ADMIN_ROLE) {
+    _mint(to, amount);
+  }
+
+  function burn(address from, uint256 amount) public onlyRole(DEFAULT_ADMIN_ROLE) {
+    _burn(from, amount);
+  }
+}
\ No newline at end of file
diff --git a/contracts/ERC721.sol b/contracts/ERC721.sol
index a1c2f7e..9f58bb0 100644
--- a/contracts/ERC721.sol
+++ b/contracts/ERC721.sol
@@ -19,7 +19,7 @@ contract GameItem is ERC721 {
 
         uint256 newItemId = _tokenIds.current();
         _mint(player, newItemId);
-        _setTokenURI(newItemId, tokenURI);
+        // _setTokenURI(newItemId, tokenURI);
 
         return newItemId;
     }
diff --git a/package.json b/package.json
index b279565..c7c0fe0 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "devDependencies": {
     "@nomiclabs/hardhat-ethers": "^2.0.1",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
-    "@openzeppelin/contracts": "^3.4.0",
+    "@openzeppelin/contracts": "4.1.0",
     "@types/chai": "^4.2.18",
     "@types/mocha": "^8.2.2",
     "@types/node": "^15.6.0",
@@ -33,7 +33,8 @@
     "test": "npx hardhat test",
     "deploy": "npx hardhat run scripts/deploy.ts",
     "erc20": "npx hardhat run scripts/erc20.ts",
-    "send-avax": "npx hardhat run scripts/sendAvax.js",
+    "send-avax-wallet-signer": "npx hardhat run scripts/sendAvaxWalletSigner.ts",
+    "send-avax-json-provider": "npx hardhat run scripts/sendAvaxJSONProvider.ts",
     "lint": "prettier ./test/**/*.ts --check",
     "prepublishOnly": "yarn test",
     "hardhat": "npx hardhat",
diff --git a/scripts/deploy.ts b/scripts/deploy.ts
index 069686a..6975d9e 100644
--- a/scripts/deploy.ts
+++ b/scripts/deploy.ts
@@ -5,7 +5,7 @@ import {
 import { ethers } from "hardhat"
 
 const main = async(): Promise<any> => {
-  const Coin: ContractFactory = await ethers.getContractFactory("CustomCoin")
+  const Coin: ContractFactory = await ethers.getContractFactory("ExampleERC20")
   const coin: Contract = await Coin.deploy()
 
   await coin.deployed()
diff --git a/scripts/erc20.ts b/scripts/erc20.ts
index 2470372..08f28fa 100644
--- a/scripts/erc20.ts
+++ b/scripts/erc20.ts
@@ -1,11 +1,13 @@
 import { 
     BigNumber,
-    Contract 
+    Contract, 
+    ContractFactory
 } from "ethers"
 import { ethers } from "hardhat"
+import { ContractType } from "hardhat/internal/hardhat-network/stack-traces/model"
 
-const coinName: string = "CustomCoin"
-const coinAddr: string = "0x52C84043CD9c865236f11d9Fc9F56aa003c1f922"
+const coinName: string = "AVASHStable"
+const coinAddr: string = "0x5aa01B3b5877255cE50cc55e8986a7a5fe29C70e"
 const walletAddress: string = "0x8db97C7cEcE249c2b98bDC0226Cc4C2A57BF52FC"
 
 const main = async(): Promise<any> => {
@@ -25,7 +27,19 @@ const main = async(): Promise<any> => {
   const balance: BigNumber = await contract.balanceOf(walletAddress)
   console.log(`Balance of ${walletAddress}: ${balance.toString()}`)
 
-  const totalSupply: BigNumber = await contract.totalSupply()
+  let totalSupply: BigNumber = await contract.totalSupply()
+  console.log(`Total supply: ${totalSupply.toString()}`)
+
+  console.log(`-----MINTING-----`)
+  await contract.mint(walletAddress, totalSupply)
+
+  totalSupply = await contract.totalSupply()
+  console.log(`Total supply: ${totalSupply.toString()}`)
+
+  console.log(`-----BURNING-----`)
+  await contract.burn(walletAddress, totalSupply)
+
+  totalSupply = await contract.totalSupply()
   console.log(`Total supply: ${totalSupply.toString()}`)
 
   const tx = await contract.transfer(walletAddress, balance)
diff --git a/scripts/sendAvax.js b/scripts/sendAvax.js
deleted file mode 100644
index d22559f..0000000
--- a/scripts/sendAvax.js
+++ /dev/null
@@ -1,38 +0,0 @@
-const hre = require("hardhat");
-
-const AMOUNT_TO_SEND = '0.01'
-
-/**
- * Sends an amount of AVAX from the first address in the private key pool to the 
- * rest of the addresses in the set.
- */
-async function main() {
-    console.log("Seeding addresses with AVAX")
-    const addresses = await ethers.getSigners();
-
-    for (i = 1; i < addresses.length; i++) {
-        await sendAvax(addresses[0].address, addresses[i].address, AMOUNT_TO_SEND)
-    }
-}
-
-/**
- * Send AVAX from one address in the private key set to another in the set.
- * @param {Signer} from address to send from
- * @param {Signer} to address to send to
- * @param {string} amount amount to send in AVAX (not wei)
- */
-async function sendAvax(from, to, amount) {
-    const params = [{
-        from: from,
-        to: to,
-        value: hre.ethers.utils.parseUnits(amount, 'ether').toHexString()
-    }];
-    await hre.ethers.provider.send('eth_sendTransaction', params)
-}
-
-main()
-  .then(() => process.exit(0))
-  .catch(error => {
-    console.error(error);
-    process.exit(1);
-  });
\ No newline at end of file
diff --git a/scripts/sendAvaxJSONProvider.ts b/scripts/sendAvaxJSONProvider.ts
new file mode 100644
index 0000000..56216ae
--- /dev/null
+++ b/scripts/sendAvaxJSONProvider.ts
@@ -0,0 +1,27 @@
+import { utils } from "ethers"
+import { ethers } from "hardhat"
+interface Param {
+  from: string
+  to: string 
+  value: string
+}
+
+const main = async(): Promise<any> => {
+  const from: string = "0x8db97C7cEcE249c2b98bDC0226Cc4C2A57BF52FC"
+  const to: string = "0xDd1749831fbF70d88AB7bB07ef7CD9c53D054a57"
+  const amount: string = "0.01"
+  const params: Param[] = [{
+    from: from,
+    to: to,
+    value: utils.parseUnits(amount, "ether").toHexString()
+  }]
+  const tx: any = await ethers.provider.send("eth_sendTransaction", params)
+  console.log(tx)
+}
+
+main()
+.then(() => process.exit(0))
+.catch(error => {
+  console.error(error)
+  process.exit(1)
+})
\ No newline at end of file
diff --git a/scripts/sendAvaxWalletSigner.ts b/scripts/sendAvaxWalletSigner.ts
new file mode 100644
index 0000000..4de9ca5
--- /dev/null
+++ b/scripts/sendAvaxWalletSigner.ts
@@ -0,0 +1,41 @@
+import { 
+  BigNumber,
+  providers,
+  utils,
+  Wallet
+} from "ethers"
+
+const walletAddress: string = "0xDd1749831fbF70d88AB7bB07ef7CD9c53D054a57"
+const pk: string = "0x56289e99c94b6912bfc12adc093c9b51124f0dc54ac7a766b2bc5ccf558d8027"
+const protocol: string = "http"
+const host: string = "localhost"
+const port: number = 9650
+
+const main = async(): Promise<any> => {
+  const provider: providers.JsonRpcProvider = new providers.JsonRpcProvider(`${protocol}://${host}:${port}/ext/bc/C/rpc`)
+  const num: number = await provider.getBlockNumber()
+  console.log(num)
+
+  const balance: BigNumber = await provider.getBalance(walletAddress)
+  console.log(balance)
+
+  const formatted: string = utils.formatEther(balance)
+  console.log(formatted)
+
+  const parsed: BigNumber = utils.parseEther("1.0")
+  console.log(parsed)
+
+  const wallet: Wallet = new Wallet(pk, provider)
+  const tx: providers.TransactionResponse = await wallet.sendTransaction({ 
+    to: walletAddress, 
+    value: parsed
+  });
+  console.log(tx)
+}
+
+main()
+.then(() => process.exit(0))
+.catch(error => {
+  console.error(error)
+  process.exit(1)
+})
\ No newline at end of file

From 1aa873cb86b0768c119cf1e7d6c012a7523141c1 Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Sat, 22 May 2021 11:02:09 -0700
Subject: [PATCH 07/11] Cleanup

---
 scripts/erc20.ts | 1 -
 1 file changed, 1 deletion(-)

diff --git a/scripts/erc20.ts b/scripts/erc20.ts
index 08f28fa..11c514c 100644
--- a/scripts/erc20.ts
+++ b/scripts/erc20.ts
@@ -4,7 +4,6 @@ import {
     ContractFactory
 } from "ethers"
 import { ethers } from "hardhat"
-import { ContractType } from "hardhat/internal/hardhat-network/stack-traces/model"
 
 const coinName: string = "AVASHStable"
 const coinAddr: string = "0x5aa01B3b5877255cE50cc55e8986a7a5fe29C70e"

From 87aa31586a2b9fec65389d69622de58d66cf8aea Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Sun, 23 May 2021 06:56:09 -0700
Subject: [PATCH 08/11] Add Storage.sol and storage.ts.

---
 contracts/Storage.sol | 14 ++++++++++++++
 package.json          |  1 +
 scripts/erc20.ts      |  3 +--
 scripts/storage.ts    | 19 +++++++++++++++++++
 4 files changed, 35 insertions(+), 2 deletions(-)
 create mode 100644 contracts/Storage.sol
 create mode 100644 scripts/storage.ts

diff --git a/contracts/Storage.sol b/contracts/Storage.sol
new file mode 100644
index 0000000..40ee639
--- /dev/null
+++ b/contracts/Storage.sol
@@ -0,0 +1,14 @@
+//SPDX-License-Identifier: mit
+pragma solidity ^0.8.0;
+
+contract Storage {
+  uint256 number;
+
+  function store(uint256 num) public {
+    number = num;
+  }
+
+  function retrieve() public view returns (uint256){
+    return number;
+  }
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index c7c0fe0..8a19de1 100644
--- a/package.json
+++ b/package.json
@@ -33,6 +33,7 @@
     "test": "npx hardhat test",
     "deploy": "npx hardhat run scripts/deploy.ts",
     "erc20": "npx hardhat run scripts/erc20.ts",
+    "storage": "npx hardhat run scripts/storage.ts",
     "send-avax-wallet-signer": "npx hardhat run scripts/sendAvaxWalletSigner.ts",
     "send-avax-json-provider": "npx hardhat run scripts/sendAvaxJSONProvider.ts",
     "lint": "prettier ./test/**/*.ts --check",
diff --git a/scripts/erc20.ts b/scripts/erc20.ts
index 11c514c..ce4569c 100644
--- a/scripts/erc20.ts
+++ b/scripts/erc20.ts
@@ -1,7 +1,6 @@
 import { 
     BigNumber,
-    Contract, 
-    ContractFactory
+    Contract
 } from "ethers"
 import { ethers } from "hardhat"
 
diff --git a/scripts/storage.ts b/scripts/storage.ts
new file mode 100644
index 0000000..37efea8
--- /dev/null
+++ b/scripts/storage.ts
@@ -0,0 +1,19 @@
+import { Contract } from "ethers"
+import { ethers } from "hardhat"
+
+const coinName: string = "Storage"
+const coinAddr: string = "0xE3573540ab8A1C4c754Fd958Dc1db39BBE81b208"
+
+const main = async(): Promise<any> => {
+  const contract: Contract = await ethers.getContractAt(coinName, coinAddr)
+  const contractAddress: string = contract.address 
+  console.log(`Address: ${contractAddress}`)
+
+  let val: string = await contract.retrieve() 
+  console.log(`Val: ${val}`)
+
+  const store: string = await contract.store(507) 
+  console.log(store)
+}
+
+main()

From 4ee5cd37374c12ab806f288d8483a7ea85dbc5b9 Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Mon, 24 May 2021 07:44:10 -0700
Subject: [PATCH 09/11] Formatting.

---
 contracts/ERC721.sol  | 24 +++++++++++-------------
 contracts/Storage.sol |  2 +-
 scripts/storage.ts    | 25 ++++++++++++-------------
 3 files changed, 24 insertions(+), 27 deletions(-)

diff --git a/contracts/ERC721.sol b/contracts/ERC721.sol
index 9f58bb0..6a82c5f 100644
--- a/contracts/ERC721.sol
+++ b/contracts/ERC721.sol
@@ -1,26 +1,24 @@
 // contracts/ERC721.sol
 // spdx-license-identifier: mit
+
 pragma solidity >= 0.6.2;
 
 import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
 import "@openzeppelin/contracts/utils/Counters.sol";
 
 contract GameItem is ERC721 {
-    using Counters for Counters.Counter;
-    Counters.Counter private _tokenIds;
+  using Counters for Counters.Counter;
+  Counters.Counter private _tokenIds;
 
-    constructor() ERC721("GameItem", "ITM") {}
+  constructor() ERC721("GameItem", "ITM") {}
 
-    function awardItem(address player, string memory tokenURI)
-        public
-        returns (uint256)
-    {
-        _tokenIds.increment();
+  function awardItem(address player, string memory tokenURI) public returns (uint256) {
+    _tokenIds.increment();
 
-        uint256 newItemId = _tokenIds.current();
-        _mint(player, newItemId);
-        // _setTokenURI(newItemId, tokenURI);
+    uint256 newItemId = _tokenIds.current();
+    _mint(player, newItemId);
+    // _setTokenURI(newItemId, tokenURI);
 
-        return newItemId;
-    }
+    return newItemId;
+  }
 }
\ No newline at end of file
diff --git a/contracts/Storage.sol b/contracts/Storage.sol
index 40ee639..8375488 100644
--- a/contracts/Storage.sol
+++ b/contracts/Storage.sol
@@ -8,7 +8,7 @@ contract Storage {
     number = num;
   }
 
-  function retrieve() public view returns (uint256){
+  function retrieve() public view returns (uint256) {
     return number;
   }
 }
\ No newline at end of file
diff --git a/scripts/storage.ts b/scripts/storage.ts
index 37efea8..d1199ac 100644
--- a/scripts/storage.ts
+++ b/scripts/storage.ts
@@ -1,19 +1,18 @@
-import { Contract } from "ethers"
+import { 
+  BigNumber,
+  Contract
+} from "ethers"
 import { ethers } from "hardhat"
 
-const coinName: string = "Storage"
-const coinAddr: string = "0xE3573540ab8A1C4c754Fd958Dc1db39BBE81b208"
+const contractName: string = "Storage"
+const contractAddress: string = "0xE3573540ab8A1C4c754Fd958Dc1db39BBE81b208"
 
 const main = async(): Promise<any> => {
-  const contract: Contract = await ethers.getContractAt(coinName, coinAddr)
-  const contractAddress: string = contract.address 
-  console.log(`Address: ${contractAddress}`)
-
-  let val: string = await contract.retrieve() 
-  console.log(`Val: ${val}`)
-
-  const store: string = await contract.store(507) 
-  console.log(store)
+  const contract: Contract = await ethers.getContractAt(contractName, contractAddress)
+  const num: BigNumber = await contract.retrieve()
+  console.log(`Number: ${num.toString()}`)
+  const tx = await contract.store(507)
+  console.log(tx)
 }
 
-main()
+main()
\ No newline at end of file

From 2f8c8f4c04703b95d013ddb9c6664cf081201ea6 Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Tue, 25 May 2021 16:59:46 -0700
Subject: [PATCH 10/11] Add PR comments.

---
 contracts/ERC20.sol | 15 +++++----------
 package.json        |  2 +-
 2 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/contracts/ERC20.sol b/contracts/ERC20.sol
index 5f9ad69..45a65e2 100644
--- a/contracts/ERC20.sol
+++ b/contracts/ERC20.sol
@@ -1,10 +1,10 @@
 //SPDX-License-Identifier: mit
-pragma solidity ^0.8.0;
+pragma solidity >= 0.6.2 < 0.8.0;
 
 import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
-import "@openzeppelin/contracts/access/AccessControl.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
 
-contract ExampleERC20 is ERC20, AccessControl {
+contract ExampleERC20 is ERC20, Ownable {
   string private TOKEN_NAME = "Example ERC20 Token";
   string private TOKEN_SYMBOL = "XMPL";
 
@@ -12,18 +12,13 @@ contract ExampleERC20 is ERC20, AccessControl {
 
   constructor() ERC20(TOKEN_NAME, TOKEN_SYMBOL) {
     _mint(msg.sender, TOTAL_SUPPLY);
-    _setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
   }
 
-  function decimals() public view virtual override returns (uint8) {
-   return 6;
-  }
-
-  function mint(address to, uint256 amount) public onlyRole(DEFAULT_ADMIN_ROLE) {
+  function mint(address to, uint256 amount) public onlyOwner() {
     _mint(to, amount);
   }
 
-  function burn(address from, uint256 amount) public onlyRole(DEFAULT_ADMIN_ROLE) {
+  function burn(address from, uint256 amount) public onlyOwner() {
     _burn(from, amount);
   }
 }
\ No newline at end of file
diff --git a/package.json b/package.json
index d82f607..680ad1e 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "devDependencies": {
     "@nomiclabs/hardhat-ethers": "^2.0.1",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
-    "@openzeppelin/contracts": "4.1.0",
+    "@openzeppelin/contracts": "^3.4.0",
     "@types/chai": "^4.2.18",
     "@types/mocha": "^8.2.2",
     "@types/node": "^15.6.0",

From 230df1fc880c74708b1f3612e64878305bfc4a3c Mon Sep 17 00:00:00 2001
From: Gabriel Cardona <gabriel@avalabs.org>
Date: Tue, 25 May 2021 17:02:50 -0700
Subject: [PATCH 11/11] Cleanup.

---
 scripts/erc20.ts | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/scripts/erc20.ts b/scripts/erc20.ts
index ce4569c..d2284b6 100644
--- a/scripts/erc20.ts
+++ b/scripts/erc20.ts
@@ -1,25 +1,25 @@
-import { 
-    BigNumber,
-    Contract
+import {
+  BigNumber,
+  Contract
 } from "ethers"
 import { ethers } from "hardhat"
 
-const coinName: string = "AVASHStable"
-const coinAddr: string = "0x5aa01B3b5877255cE50cc55e8986a7a5fe29C70e"
-const walletAddress: string = "0x8db97C7cEcE249c2b98bDC0226Cc4C2A57BF52FC"
+const coinName: string = ""
+const coinAddr: string = ""
+const walletAddress: string = ""
 
-const main = async(): Promise<any> => {
+const main = async (): Promise<any> => {
   const contract: Contract = await ethers.getContractAt(coinName, coinAddr)
-  const contractAddress: string = contract.address 
+  const contractAddress: string = contract.address
   console.log(`Address: ${contractAddress}`)
 
-  const name: string = await contract.name() 
+  const name: string = await contract.name()
   console.log(`Name: ${name}`)
 
-  const symbol: string = await contract.symbol() 
+  const symbol: string = await contract.symbol()
   console.log(`Symbol: ${symbol}`)
 
-  const decimals: string = await contract.decimals() 
+  const decimals: string = await contract.decimals()
   console.log(`Decimals: ${decimals}`)
 
   const balance: BigNumber = await contract.balanceOf(walletAddress)
@@ -50,8 +50,8 @@ const main = async(): Promise<any> => {
 }
 
 main()
-.then(() => process.exit(0))
-.catch(error => {
-  console.error(error)
-  process.exit(1)
-})
\ No newline at end of file
+  .then(() => process.exit(0))
+  .catch(error => {
+    console.error(error)
+    process.exit(1)
+  })
\ No newline at end of file