README.md

Starter Kits

An Polygon Starter Kit Tutorial containing React, @web3-react, Alchemy.

0. Environment Setup

Install fundamental environments, including node, web3, react, truffle, etc

\0. Environment Setup

Install Ganache、Truffle

Use Starter Kits build your DAPP right away!

An Polygon Starter Kit Tutorial containing React, @web3-react, Alchemy.

Developer Docs - A Polygon Starter Kit tutorial from Alchemy

Install ganache

Download Package from https://www.trufflesuite.com/ganache

Ganache Screenshot

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granache is needed for dapp development on local blockchain, its capable of viewing txns informations, create workspace folder, deploy smart contracts and tracking its interface.

Install truffle

npm install -g truffle 

truflle is used for develop, test, and deploy smart contracts.

More tutorials about truffle: https://learnblockchain.cn/docs/truffle/

\0. Environment Setup

Create your DAPP using Starter Kits Template

Quick Start

npx create-react-app {YOUR_PROJECT_NAME} --template polygon-starter-kit
cd {YOUR_PROJECT_NAME}
npm run start 

(npx comes from npm 5.2+ or later)

Then fireup your browser and go to http://localhost:3000/ to check your application.

When you are preparing to deploy your project to production settings, use npm run build to create a compressed bundle and deploy.

Immediate Configuration

There is no need for you to install or configurate tools like Webpack or Babel. They comes pre-configurated and hiddened, therefore you are provided with the full environment pack where you only need to worry about coding part.

Just create a project with the template, then you are good to go!

Create Application

You will need to use Node that is higher or equal to version 6 on your local computer(on server you don't have to). There is nvm(macOS/Linux) or nvm-windows to help you eaily switch between different Node versions.

Create a new application

npx create-react-app {YOUR_PROJECT_NAME} --template polygon-starter-kit

Then a new folder named {YOUR_PROJECT_NAME} will be created under current folder location. The File structures under this new folder is as below:

{YOUR_PROJECT_NAME}
├── README.md
├── node_modules
├── package.json
├── migrations 
├── .gitignore
├── public
│   ├── favicon.ico
│   ├── index.html
│   └── manifest.json
└── src
	├── App.css
	├── App.js
	├── App.test.js
	├── assets
	│   ├── icon-devx.svg
	│   ├── logo512.png
	│   └── polygon-logo.svg
	├── components
	│   ├── Contents
	│   │   └── index.js
	│   ├── Footer
	│   │   ├── footer.css
	│   │   └── index.js
	│   ├── Headers
	│   │   └── index.js
	│   └── Wallet
	│       ├── ConnectWallet.js
	│       └── WalletInfo.js
	├── contracts
	│   └── Migrations.sol
	├── hooks
	│   └── index.js
	├── index.css
	├── index.js
	├── lib
	│   └── connectors
	│       └── index.js
	├── reportWebVitals.js
	└── setupTests.js
└── truffle-config.js

\0. Environment Setup

Truffle Environment Configuration

truffle-config.js

const mnemonic = process.env.MNEMONIC;
const HDWalletProvider = require("@truffle/hdwallet-provider");


module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",
      port: 8545,     
      network_id: "*" // Match any network id
    },
    polygon: {
      provider: new HDWalletProvider(mnemonic, process.env.POLYGON_RPC),
      network_id: 137,
      confirmations: 2,
      timeoutBlocks: 200,
      skipDryRun: true
    },
    mumbai: {
      provider: new HDWalletProvider(mnemonic, process.env.POLYGON_MUMBAI_RPC),
      network_id: 80001,
      confirmations: 2,
      timeoutBlocks: 200,
      skipDryRun: true
    }

Create .env File under root folder

vim .env
MNEMONIC=" {YOUR_MNEMONIC OR YOUR_PRIVATE_KEY} "
POLYGON_RPC = " {PUBLIC_POLYGON_RPC} OR https://rpc-mainnet.matic.network"
POLYGON_MUMBAI_RPC = " {PUBLIC_POLYGON_MUMBAI_RPC} or https://rpc-mumbai.maticvigil.com/"

More about PUBLIC_RPC please reference on：Development Docs

1.Project Structure

Polygon-Starter-Kit Project Template Introduction, and how to utilize different modules in it.

1.Project Structure

Project Structure

Polygon-Starter-Kit Project Structure is as below

{YOUR_PROJECT_NAME}
├── README.md
├── node_modules
├── package.json
├── migrations 
├── .gitignore
├── public
│   ├── favicon.ico
│   ├── index.html
│   └── manifest.json
└── src
	├── App.css
	├── App.js
	├── App.test.js
	├── assets
	│   ├── icon-devx.svg
	│   ├── logo512.png
	│   └── polygon-logo.svg
	├── components
	│   ├── Contents
	│   │   └── index.js
	│   ├── Footer
	│   │   ├── footer.css
	│   │   └── index.js
	│   ├── Headers
	│   │   └── index.js
	│   └── Wallet
	│       ├── ConnectWallet.js
	│       └── WalletInfo.js
	├── contracts
	│   └── Migrations.sol
	├── hooks
	│   └── index.js
	├── index.css
	├── index.js
	├── lib
	│   └── connectors
	│       └── index.js
	├── reportWebVitals.js
	└── setupTests.js
└── truffle-config.js

• migrations is used to contain JS scripts for smart contract migration and deployment
• src DAPP Client source code
• src/contracts For containing smart contract，and its also the contract location pointer in the truffle configuration
• src/abis for containing abi files after Truffle Compilation
• hooks/index.js initialize Provider‘s request hook in @web3-react