This repository has been deprecated in favor of zksync-ethers@^6.0.0!!!
In order to provide easy access to all the features of zkSync Era, the zksync2-js
JavaScript SDK was created,
which is made in a way that has an interface very similar to those of ethers. In
fact, ethers
is a peer dependency of our library and most of the objects exported by zksync2-js
(
e.g. Wallet
, Provider
etc.) inherit from the corresponding ethers
objects and override only the fields that need
to be changed.
While most of the existing SDKs should work out of the box, deploying smart contracts or using unique zkSync features, like account abstraction, requires providing additional fields to those that Ethereum transactions have by default.
The library is made in such a way that after replacing ethers
with zksync2-js
most client apps will work out of
box.
π For a detailed walkthrough, refer to the official documentation.
To begin, it is useful to have a basic understanding of the types of objects available and what they are responsible for, at a high level:
Provider
provides connection to the zkSync Era blockchain, which allows querying the blockchain state, such as account, block or transaction details,
querying event logs or evaluating read-only code using call. Additionally, the client facilitates writing to the blockchain by sending
transactions.Wallet
wraps all operations that interact with an account. An account generally has a private key, which can be used to sign a variety of
types of payloads. It provides easy usage of the most common features.node: >= 18
(installation guide)ethers: ^6.7.1
yarn add zksync2-js
yarn add ethers@6 # ethers is a peer dependency of zksync2-js
The complete examples with various use cases are available here.
import { Provider, utils, types } from "zksync2-js";
import { ethers } from "ethers";
const provider = Provider.getDefaultProvider(types.Network.Goerli); // zkSync Era testnet (L2)
const ethProvider = ethers.getDefaultProvider("goerli"); // goerli testnet (L1)
const blockNumber = await provider.getBlockNumber();
const block = await provider.getBlock("latest");
const PRIVATE_KEY = process.env.PRIVATE_KEY;
const wallet = new Wallet(PRIVATE_KEY, provider, ethProvider);
const ethBalance = await wallet.getBalance(); // balance on zkSync Era network
const ethBalanceL1 = await wallet.getBalanceL1(); // balance on goerli network
Transfer funds among accounts on L2 network.
const receiver = Wallet.createRandom();
const transfer = await wallet.transfer({
to: receiver,
token: utils.ETH_ADDRESS,
amount: ethers.parseEther("1.0"),
});
Transfer funds from L1 to L2 network.
const deposit = await wallet.deposit({
token: utils.ETH_ADDRESS,
amount: ethers.parseEther("1.0"),
});
Transfer funds from L2 to L1 network.
const withdrawal = await wallet.withdraw({
token: utils.ETH_ADDRESS,
amount: ethers.parseEther("1.0"),
});
We welcome contributions from the community! If you're interested in contributing to the zksync2-js JavaScript SDK, please take a look at our CONTRIBUTING.md for guidelines and details on the process.
Thank you for making zksync2-js JavaScript SDK better! π