Hardhat

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Welcome to Loop Network !
Basic Knowledge
What is Blockchain ?
Getting Started with Loop Network
Hardhat
Using Hardhat
What is Hardhat
Hardhat is a development environment to compile, deploy, test, and debug your smart contract.
Setting up the development environment
There are a few technical requirements before we start. Please install the following: Requirements:
Installing
There are a few technical requirements before we start. Please install the following: Requirements:
Windows, Linux or Mac OS X
​Node.js v8.9.4 LTS or later​
​Git​
First, you need to create an empty project npm init --yes
Once your project is ready, you should run
npm install --save-dev hardhat
It's recommeded to install some dependencies.
npm install --save-dev @nomiclabs/hardhat-waffle ethereum-waffle chai @nomiclabs/hardhat-ethers ethers
To use your local installation of Hardhat, you need to use npx to run it (i.e. npx hardhat).
Create A Project
To create your Hardhat project run npx hardhat in your project folder:
mkdir DogeLoop
cd DogeLoop
Intialize your project:
$ npx hardhat
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888    888                      888 888               888
888    888                      888 888               888
8888888888  8888b.  888d888 .d88888 88888b.   8888b.  888888
888    888     "88b 888P"  d88" 888 888 "88b     "88b 888
888    888 .d888888 888    888  888 888  888 .d888888 888
888    888 888  888 888    Y88b 888 888  888 888  888 Y88b.
888    888 "Y888888 888     "Y88888 888  888 "Y888888  "Y888
​
Welcome to Hardhat v2.0.8
​
? What do you want to do? …
❯ Create a sample project
  Create an empty hardhat.config.js
  Quit
Once this project is initialized, you'll now have a project structure with the following items:
contracts/: Directory for Solidity contracts
scripts/: Directory for scriptable deployment files
test/: Directory for test files for testing your application and contracts
hardhat-config.js: Hardhat configuration file
Create Contract
You can write your own smart contract or download the LRC20 token smart contract template.
Config Hardhat for TC
Go to hardhat.config.js
Update the config with nc-network-crendentials.
require("@nomiclabs/hardhat-waffle");
require('@nomiclabs/hardhat-ethers');
const { mnemonic } = require('./secrets.json');
​
// 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();
​
  for (const account of accounts) {
    console.log(account.address);
  }
});
​
// You need to export an object to set up your config
// Go to https://hardhat.org/config/ to learn more
​
/**
 * @type import('hardhat/config').HardhatUserConfig
 */
module.exports = {
  defaultNetwork: "mainnet",
  networks: {
    localhost: {
      url: "http://127.0.0.1:8545"
    },
    hardhat: {
    },
    testnet: {
      url: "https://api.testnetloop.com",
      chainId: 14441,
      gasPrice: 20000000000,
      accounts: {mnemonic: mnemonic}
    },
    mainnet: {
      url: "https://api.mainnetloop.com/",
      chainId: 155551,
      gasPrice: 20000000000,
      accounts: {mnemonic: mnemonic}
    }
  },
  solidity: {
  version: "0.5.16",
  settings: {
    optimizer: {
      enabled: true
    }
   }
  },
  paths: {
    sources: "./contracts",
    tests: "./test",
    cache: "./cache",
    artifacts: "./artifacts"
  },
  mocha: {
    timeout: 20000
  }
};
Note
It requires mnemonic to be passed in for Provider, this is the seed phrase for the account you'd like to deploy from. Create a new .secret file in root directory and enter your 12 word mnemonic seed phrase to get started. To get the seedwords from metamask wallet you can go to Metamask Settings, then from the menu choose Security and Privacy where you will see a button that says reveal seed words.
Compile Contract
To compile a Hardhat project, change to the root of the directory where the project is located and then type the following into a terminal:
npx hardhat compile
Deploying on LOOP Network
Run this command in root of the project directory:
$  npx hardhat run --network testnet scripts/deploy.js
Remember your address, transaction_hash and other details provided would differ, Above is just to provide an idea of structure.
Congratulations! You have successfully deployed LRC20 Smart Contract. Now you can interact with the Smart Contract.
You can check the deployment status here: https://explorer.testnetloop.com or https://explorer.mainnetloop.com/​
Truffle
LRC20 Token
Last modified 4mo ago
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Outline
Using Hardhat
What is Hardhat
Setting up the development environment
Installing
Create A Project
Deploying on LOOP Network