Ethers.js Extension for kaia

Ethers.js Extension for kaia offers:

• Drop-in replacement to ethers.Wallet that handles both Ethereum and kaia transaction types involving AccountKey and TxTypes.
• Drop-in replacement to ethers.providers.JsonRpcProvider that provides accesses to both Ethereum RPCs and kaia-specific RPCs.
• Drop-in replacement to ethers.Web3Provider to work with both MetaMask (window.ethereum) and Kaia Wallet (window.klaytn)

Note for ethers v6

@kaiachain/ethers-ext was developed based on ethers v5. As a result, ethers v6 classes are incompatible with ethers-ext classes. If you are using ethers v6 in your codebase, do not mix ethers v6 classes and ethers-ext classes. e.g. ethers v6 JsonRpcProvider cannot be supplied to ethers-ext Wallet.

• Don't: mix ethers v6 and ethers-ext
  
  

  const ethers = require("ethers");

  const { Wallet } = require("@kaiachain/ethers-ext");

  const provider = new ethers.JsonRpcProvider("https://public-en-kairos.node.kaia.io");

  const wallet = new Wallet("<private key>", provider);

  
  
• Do: mix ethers v5 and ethers-ext
  
  

  const ethers = require("ethers");

  const { Wallet } = require("@kaiachain/ethers-ext");

  const provider = new ethers.providers.JsonRpcProvider("https://public-en-kairos.node.kaia.io");

  const wallet = new Wallet("<private key>", provider);

  
  
• Do: ethers-ext only
  
  

  const { Wallet, JsonRpcProvider } = require("@kaiachain/ethers-ext");

  const provider = new JsonRpcProvider("https://public-en-kairos.node.kaia.io");

  const wallet = new Wallet("<private key>", provider);

  
  

Install

Node.js

• Install
  
  

  npm install --save @kaiachain/ethers-ext ethers@5

  
  
• ESM or TypeScript
  
  

  import { Wallet, JsonRpcProvider } from "@kaiachain/ethers-ext";

  const provider = new JsonRpcProvider("https://public-en-kairos.node.kaia.io");

  const wallet = new Wallet("<private key>", provider);

  
  
• CommonJS
  
  

  const { Wallet, JsonRpcProvider } = require("@kaiachain/ethers-ext");

  const provider = new JsonRpcProvider("https://public-en-kairos.node.kaia.io");

  const wallet = new Wallet("<private key>", provider);

  
  

Browser

It is not recommended to use CDNs in production, But you can use below for quick prototyping.

<script src="https://cdn.jsdelivr.net/npm/@kaiachain/ethers-ext@latest/dist/ethers-ext.bundle.js"></script>

<script>

const provider = new ethers_ext.providers.Web3Provider(window.klaytn);

</script>

Usage

See example and test.