ethers-multicall

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

[![npm package][npm-img]][npm-url] [![Build Status][build-img]][build-url] [![Downloads][downloads-img]][downloads-url] [![Issues][issues-img]][issues-url] [![Commitizen Friendly][commitizen-img]][commitizen-url] [![Semantic Release][semantic-release-img]][semantic-release-url]

⚡🚀 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);

[build-img]: https://github.com/morpho-labs/ethers-multicall/actions/workflows/release.yml/badge.svg [build-url]: https://github.com/morpho-labs/ethers-multicall/actions/workflows/release.yml [downloads-img]: https://img.shields.io/npm/dt/@morpho-labs/ethers-multicall [downloads-url]: https://www.npmtrends.com/@morpho-labs/ethers-multicall [npm-img]: https://img.shields.io/npm/v/@morpho-labs/ethers-multicall [npm-url]: https://www.npmjs.com/package/@morpho-labs/ethers-multicall [issues-img]: https://img.shields.io/github/issues/morpho-labs/ethers-multicall [issues-url]: https://github.com/morpho-labs/ethers-multicall/issues [codecov-img]: https://codecov.io/gh/morpho-labs/ethers-multicall/branch/main/graph/badge.svg [codecov-url]: https://codecov.io/gh/morpho-labs/ethers-multicall [semantic-release-img]: https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg [semantic-release-url]: https://github.com/semantic-release/semantic-release [commitizen-img]: https://img.shields.io/badge/commitizen-friendly-brightgreen.svg [commitizen-url]: http://commitizen.github.io/cz-cli/