@walletconnect/core

What is @walletconnect/core?

@walletconnect/core is a core library for WalletConnect, a protocol for connecting decentralized applications (dApps) to mobile wallets with QR code scanning or deep linking. It allows developers to integrate WalletConnect functionality into their applications, enabling secure and seamless interactions between dApps and wallets.

What are @walletconnect/core's main functionalities?

Initialize WalletConnect

This code initializes a WalletConnect connector with a specified bridge server and QR code modal. The connector is the main interface for establishing a connection between a dApp and a wallet.

const WalletConnect = require('@walletconnect/core');
const connector = new WalletConnect({
  bridge: 'https://bridge.walletconnect.org',
  qrcodeModal: QRCodeModal,
});

Create Session

This code creates a new WalletConnect session and generates a URI that can be displayed as a QR code. The QR code allows users to scan and connect their wallet to the dApp.

connector.createSession().then(() => {
  const uri = connector.uri;
  QRCodeModal.open(uri, () => {
    console.log('QR Code Modal closed');
  });
});

Send Transaction

This code listens for a successful connection event and then sends a transaction from the connected wallet. The transaction details such as recipient address, amount, and gas limit are specified in the `tx` object.

connector.on('connect', (error, payload) => {
  if (error) {
    throw error;
  }
  const { accounts } = payload.params[0];
  const tx = {
    from: accounts[0],
    to: '0xRecipientAddress',
    value: '0xAmountInWei',
    gas: '0xGasLimit',
  };
  connector.sendTransaction(tx).then((result) => {
    console.log('Transaction sent:', result);
  }).catch((error) => {
    console.error('Transaction error:', error);
  });
});

Other packages similar to @walletconnect/core

web3

Web3.js is a collection of libraries that allow you to interact with a local or remote Ethereum node using HTTP, IPC, or WebSocket. It provides functionalities for sending transactions, interacting with smart contracts, and more. Unlike @walletconnect/core, Web3.js does not focus on connecting dApps to mobile wallets via QR codes but provides a broader range of Ethereum-related functionalities.

ethers

Ethers.js is a library for interacting with the Ethereum blockchain and its ecosystem. It provides a concise and consistent interface for sending transactions, interacting with smart contracts, and more. Similar to Web3.js, Ethers.js does not specifically focus on WalletConnect functionalities but offers a comprehensive set of tools for Ethereum development.

web3modal

Web3Modal is a library that allows developers to easily integrate multiple wallet providers into their dApps. It supports WalletConnect, MetaMask, and other popular wallets. While Web3Modal includes WalletConnect as one of its options, it provides a more generalized solution for connecting to various wallet providers.

README

WalletConnect Core

Core Library for WalletConnect

This library is shared with the Browser Client and React-Native Client

For more details, read the documentation