Connect React to Web3
Build decentralized applications with the complete tech stack. From wallet connection to smart contract deployment.
Overview
Master the essential tools and technologies to seamlessly integrate Web3 functionality into your React applications.
Complete Web3 Integration
Everything you need to build, test, and deploy React apps with Web3 capabilities.
Core Features
- • Wallet connection management
- • Smart contract interaction
- • Transaction handling
- • Real-time blockchain updates
Tech Stack
- • React + TypeScript
- • Web3.js / Ethers.js
- • Hardhat / Truffle
- • Testing frameworks
Developer Experience
Streamlined setup with hot reload, debugging tools, and comprehensive documentation.
Production Ready
Battle-tested patterns for secure, scalable Web3 applications in production.
Core Libraries
Essential JavaScript libraries for React-Web3 integration
Web3.js / Ethers.js
Ethereum interaction libraries for smart contract calls and blockchain queries.
- • Contract interaction
- • Wallet connection
- • Transaction management
wagmi
React hooks library for Ethereum with built-in wallet support and caching.
- • React hooks
- • Auto-caching
- • TypeScript support
viem
TypeScript-first alternative to web3.js with better performance and tree-shaking.
- • TypeScript-first
- • Lightweight & fast
- • ABI encoding
Development Tools
Essential tools and frameworks for building, testing, and deploying Web3 applications
Build Tools
- • Vite / Webpack 5
- • TypeScript compiler
- • ESLint & Prettier
- • Babel transpilation
Testing Framework
- • Jest & React Testing Library
- • Hardhat testing environment
- • Local blockchain (Hardhat)
- • Contract testing utilities
Deployment & DevOps
- • IPFS for frontend hosting
- • CI/CD with GitHub Actions
- • Contract verification tools
- • Monitoring & analytics
Smart Contract Development
Languages
- • Solidity
- • Vyper
- • Rust (Solana)
Frameworks
- • Hardhat
- • Truffle
- • Foundry
Development Environment
Wallet Integration
Seamlessly connect and manage Web3 wallets in your React applications
MetaMask Integration
- • Browser extension detection
- • Account connection & switching
- • Transaction signing
- • Network switching
WalletConnect
- • Mobile wallet support
- • QR code scanning
- • Deep linking
- • Multi-chain support
Multi-Wallet Support
- • Coinbase Wallet
- • Trust Wallet
- • Phantom (Solana)
- • Custom wallet adapters
Integration Code Example
// wagmi setup
import { configureChains, createClient } from 'wagmi'
import { mainnet } from 'wagmi/chains'
import { MetaMaskConnector } from 'wagmi/connectors/metaMask'
const { chains, provider } = configureChains(
[mainnet],
[publicProvider()]
)
const client = createClient({
autoConnect: true,
connectors: [new MetaMaskConnector({ chains })],
provider,
})Smart Contracts
Interact seamlessly with blockchain smart contracts from React
Read Operations
- • Fetch contract state
- • Query balance
- • Get transaction history
Write Operations
- • Execute contract functions
- • Send transactions
- • Handle gas estimation
Contract Integration Example
// useContract hook example
const contract = useContract({
address: '0x123...',
abi: contractABI,
})
// Read data
const { data: balance } = useContractRead({
...contract,
functionName: 'getBalance',
})
// Write transaction
const { write } = useContractWrite({
...contract,
functionName: 'transfer',
})
Key Features
- • ABI auto-generation
- • Type-safe contracts
- • Event listeners
- • Error handling
- • Gas optimization
- • Multi-chain support
Testing Framework
Comprehensive testing tools and strategies for rock-solid Web3 applications
Test Categories
- • Unit tests for smart contracts
- • Integration tests for UI components
- • E2E tests for full flows
- • Security & gas optimization tests
Testing Tools
- • Jest & React Testing Library
- • Hardhat local blockchain
- • Chai matchers for contracts
- • Ethers mocking utilities
Test Suite Example
// Hardhat test example
import { expect } from "chai"
import { ethers } from "hardhat"
describe("Token", function () {
it("Should transfer tokens", async function () {
const [owner, addr1] = await ethers.getSigners()
const Token = await ethers.getContractFactory("Token")
const token = await Token.deploy()
await token.deployed()
await token.transfer(addr1.address, 50)
expect(await token.balanceOf(addr1.address)).to.equal(50)
})
})
Testing Stack
- • Jest for unit tests
- • Hardhat for blockchain
- • Chai for assertions
- • React Testing Library
- • Ethers.js mocking
- • Local blockchain
Testing Workflow
Unit Tests
Smart contract functions
Integration
Contract + UI testing
E2E Tests
Full user journey
Deployment Stack
Deploy your React Web3 apps with confidence using proven cloud infrastructure
Frontend Deployment
- • Vercel / Netlify
- • IPFS (Pinata / Infura)
- • Cloudflare Pages
- • AWS S3 + CloudFront
Smart Contract Deployment
- • Hardhat deploy scripts
- • Truffle migrations
- • Foundry deployment
- • Contract verification
Monitoring & Analytics
- • Tenderly / Etherscan
- • Sentry error tracking
- • Vercel analytics
- • Blockchain explorers
Deployment Pipeline
Test
Automated testing suite
Build
Production build creation
Deploy
Live deployment