klaytn-multicall v1.1.3

import Mutlicall from 'klaytn-multicall';

const caver = new Caver(...);
const staking = new caver.klay.Contract(...);
const calls = [
  staking.methods.balanceOf(
    '0x7777777141f111cf9f0308a63dbd9d0cad3010c4',
  ),
  staking.methods.rewardsOf(
    '0x7777777141f111cf9f0308a63dbd9d0cad3010c4',
  ),
];

const multicall = new Multicall({ provider });
await multicall.aggregate(calls)
  .then((console.log));

new Multicall({
  provider,
  multicallV2Address: '0xd11dfc2ab34abd3e1abfba80b99aefbd6255c4b8',
});

multicallV2Address defaults to 0xd11dfc2ab34abd3e1abfba80b99aefbd6255c4b8(Multicall2 deployed in Cypress).