ethers-multicall

This package is deprecated in favor of ethers-multicall-provider which enables better debugging and independent contract calls!

⚡🚀 Call multiple view functions, from multiple Smart Contracts, in a single RPC query!

Querying an RPC endpoint can be very costly (100+ queries) when loading data from multiple smart contracts. With multicall, batch these queries into a single, on-chain query, without additional over-head!

This is the standalone package of the library formerly created & used by Zapper.

Install

npm install @morpho-labs/ethers-multicall

yarn add @morpho-labs/ethers-multicall

Usage

import { ethers } from "ethers";

import { EthersMulticall } from "@morpho-labs/ethers-multicall";

const provider = new ethers.providers.JsonRpcBatchProvider("...");
const multicall = new EthersMulticall(provider);

const uni = multicall.wrap(
  new ethers.Contract("0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984", UniswapAbi)
); // make sure to always wrap contracts to benefit from multicalls

Promise.all([
  uni.name(),
  uni.symbol(),
  uni.decimals(),
  uni.inexistantFunction().catch(() => "default value"),
]).then(console.log);