Built for inevitable-dao/bento
Inspired by makerdao/multicall and dopex-io/web3-multicall
# Yarn
yarn add klaytn-multicall
# NPM
npm install klaytn-multicallimport { Multicall } from 'klaytn-multicall';
const provider = new Caver(...);
const multicall = new Multicall({ provider });
const staking = new caver.klay.Contract(...);
const calls = [
staking.methods.balanceOf(
'0x7777777141f111cf9f0308a63dbd9d0cad3010c4',
),
staking.methods.rewardsOf(
'0x7777777141f111cf9f0308a63dbd9d0cad3010c4',
),
];
await multicall.aggregate(calls)
.then((console.log));From version 1.1.1, you can also use web3 (to unify the interface or for other chains) as well.
const ethereumProvider = new Web3(...); // Ethereum
const klaytnProvider = new Caver(...); // Klaytn
const multicall = new Multicall({
provider: Config.CHAIN === 'klaytn'
? klaytnProvider
: ethereumProvider
});-
getEthBalance: Gets theETHKLAY balance of an address -
getBlockHash: Gets the block hash -
getLastBlockHash: Gets the last blocks hash -
getCurrentBlockTimestamp: Gets the current block timestamp -
getCurrentBlockDifficulty: Gets the current block difficulty -
getCurrentBlockGasLimit: Gets the current block gas limit -
getCurrentBlockCoinbase: Gets the current block coinbase
const multicall = new Multicall({ provider });
const calls = [
staking.methods.balanceOf('0x7777777141f111cf9f0308a63dbd9d0cad3010c4'),
staking.methods.rewardsOf('0x7777777141f111cf9f0308a63dbd9d0cad3010c4'),
// Queries KLAY balance of address
multicall.contract.methods.getEthBalance(
'0x7777777141f111cf9f0308a63dbd9d0cad3010c4',
),
multicall.contract.methods.getBlockHash(103742609),
multicall.contract.methods.getLastBlockHash(),
];
await multicall.aggregate(calls).then(console.log);You can inject contract address of your custom implementation, too:
new Multicall({
provider,
multicallV2Address: '0xd11dfc2ab34abd3e1abfba80b99aefbd6255c4b8',
});multicallV2Address defaults to 0xd11dfc2ab34abd3e1abfba80b99aefbd6255c4b8(Multicall2 deployed in Cypress).