@usedapp/core

useDapp

Ethereum 🤝 React

Framework for rapid Dapp development.
Simple. Robust. Extendable. Testable.

About

Introduces great features:

• 🏗️ React hooks - Uses React hooks as your primary building ingredient
• 🚅 Auto refresh - Refreshes on a new block, wallet change or network change
• 🛒 Multicall - Combines multiple blockchain calls into a single multicall

Combines the best practices:

• 🔧 Modern stack - Employs ethers.js, multicall & waffle
• 📚 Extendability - Extends easily with custom hooks
• 💡 Testability - Simple integration tests for UI and blockchain

Example

import { Mainnet } from '@usedapp/core/modal/chain/ethereum'
import { useEthers, useEtherBalance } from '@usedapp/core'

const config = {
  readOnlyChainId: Mainnet.chainId,
  readOnlyUrls: {
    [Mainnet.chainId]: 'https://mainnet.infura.io/v3/62687d1a985d4508b2b7a24827551934',
  },
}

ReactDOM.render(
  <DAppProvider config={config}>
    <App />
  </DAppProvider>,
  document.getElementById('root')
)

const STAKING_CONTRACT = '0x00000000219ab540356cBB839Cbe05303d7705Fa'

export function App() {
  const { activateBrowserWallet, deactivate, account } = useEthers()
  const userBalance = useEtherBalance(account)
  const stakingBalance = useEtherBalance(STAKING_CONTRACT)

  return (
    <div>
      {!account && <button onClick={activateBrowserWallet}> Connect </button>}
      {account && <button onClick={deactivate}> Disconnect </button>}
      {stakingBalance && <p>ETH2 staking balance: {formatEther(stakingBalance)} ETH </p>}
      {account && <p>Account: {account}</p>}
      {userBalance && <p>Ether balance: {formatEther(userBalance)} ETH </p>}
    </div>
  )
}

See application here.

Documentation

For detailed feature walkthrough checkout documentation.

Contributing

Contributions are always welcome, no matter how large or small. Before contributing, please read the code of conduct and contribution policy.

Before you issue pull request:

• Make sure all tests pass.
• Make sure linter passes.
• Make sure you have test coverage for any new features.

To install dependencies type:

npm i -g pnpm
pnpm install

To build project:

yarn build

To run tests type:

yarn test

To run linter type:

yarn lint

License

useDapp is released under the MIT License.