Starknet Redux Multicall

React + Redux library to fetch starknet state at each new block through batched and cached calls.

Setup

yarn add @rulesorg/starknet-redux-multicall or npm install @rulesorg/starknet-redux-multicall

Usage

1import { combineReducers, createStore } from 'redux'
2import { createMulticall } from '@rulesorg/starknet-redux-multicall'
3
4// Create a multicall instance
5export const multicall = createMulticall({ reducerPath: 'multicall' })
6
7// Create multicall redux store
8const reducer = combineReducers({ [multicall.reducerPath]: multicall.reducer })
9export const store = createStore(reducer)
10
11// Multicall hooks must be called inside the Multicall Updater
12export function MulticallUpdater() {
13  const latestBlockNumber = useLatestBlockNumber()
14  const contract = useMulticallContract()
15
16  return <multicall.Updater latestBlockNumber={latestBlockNumber} contract={contract} />
17}

Hooks

useMultipleContractSingleData

1const ETH_TOKEN_ADDRESS = '0x049d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7'
2const DAI_TOKEN_ADDRESS = '0x03e85bfbb8e2a42b7bead9e88e9a1b19dbccf661471061807292120462396ec9'
3
4const results = multicall.hooks.useMultipleContractSingleData(
5  latestBlockNumber,
6  [ETH_TOKEN_ADDRESS, DAI_TOKEN_ADDRESS],
7  ERC20ABI as Abi,
8  'balanceOf',
9  { address }
10)
11
12console.log(results[0]?.result?.balance) // ETH balance as Uint256
13console.log(results[1]?.result?.balance) // DAI balance as Uint256

Disclaimer ⚠️

This repo contains highly experimental code. Use at your own risk.

Credits

This library is inspired by @uniswap/redux-multicall.