Web3 Multicall3

Multicall3 is a library for batching contract calls. Web3-multicall3 is a type-safe multicall3 contract wrapper

• Installation
• Usage
  • createContractCall
  • Examples
  • Demo code
    • NodeJS
    • Browser
    • React TypeScript
    • React JavaScript
• Tests

Installation

yarn add web3-multicall3

Usage

const multicall = new Web3Multicall3({
  web3: web3Instance, // Web3 v4.*
  address: '0xcA11bde05977b3631167028862bE2a173976CA11', // constant address
});

const [someFunctionResponse] = await multicall.aggregate3([
  createContractlCall(
    contract, // some contract
    'someFunctionName', // function name, types are automatically obtained from contract
    [arg1, arg2] // someFunction parameters, types validated by web3
  )
]);

createContractCall

A utility that provides type support for proper use of web3 contract

Demo

• NodeJS
• Browser
• React TypeScript
• React JavaScript

Parameters

• contract - web3.eth.contract
• fnName - function name (obtained from provided contract)
• args - arguments of selected function (types are validated)

Examples

• USDC example - fetching USDC contract owner and balance of zero address
• USDC example (plugin) - Web3Multicall3Pluge usage

Tests

• Only very base tests are implemented