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@klaytn/web3js-ext

v1.0.2

Published

web3.js extension for Klaytn blockchain

Downloads

13

Readme

Web3.js Extension for Klaytn

Web3.js Extension for Klaytn offers:

  • Drop-in replacement to new Web3(...) that supports both Ethereum and Klaytn transaction types involving AccountKey and TxTypes. See Modifications to the Web3 object section for details

Install

Node.js

  • Install
    npm install --save @klaytn/web3js-ext
  • ESM or TypeScript
    import { Web3 } from "@klaytn/web3js-ext";
    const web3 = new Web3("https://public-en-baobab.klaytn.net");
  • CommonJS
    const { Web3 } = require("@klaytn/web3js-ext");
    const web3 = new Web3("https://public-en-baobab.klaytn.net");

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/@klaytn/web3js-ext@latest/dist/web3js-ext.bundle.js"></script>
<script>
const web3 = new web3_ext.Web3(window.klaytn);
</script>

Usage

See example and test.

Modifications to the Web3 object

See DESIGN for source code organization.

Accounts

  • Following functions can handle Klaytn TxTypes. See src/account/index.ts
    // account independent functions
    web3.eth.accounts.recoverTransaction(rlp)
    web3.eth.accounts.signTransaction(obj or rlp)
    web3.eth.accounts.signTransactionAsFeePayer(obj or rlp)
    
    // account-bound functions
    var account = web3.eth.accounts.create()
    var account = web3.eth.accounts.privateKeyToAccount(priv)
    var account = web3.eth.accounts.decrypt(keystore)
    account.signTransaction(obj or rlp)
    account.signTransactionAsFeePayer(obj or rlp)
  • Following functions can handle the KIP-3 Klaytn keystore format v4
    web3.eth.accounts.decrypt(keystore)
    web3.eth.accounts.decryptList(keystore)

Eth RPC wrappers

  • Following functions calls different RPC, and handle Klaytn TxTypes. See src/eth/index.ts
    // Try klay_protocolVersion, falls back to eth_protocolVersion
    web3.eth.getProtocolVersion()
    
    // klay_sendTransaction if Klaytn TxType, otherwise eth_sendTransaction
    // Additional treatment for Kaikas compatibility
    web3.eth.sendTransaction(obj)
    
    // klay_sendRawTransaction if Klaytn TxType, otherwise eth_sendRawTransaction
    web3.eth.sendSignedTransaction(rlp)
    
    // klay_signTransaction if Klaytn TxType, otherwise eth_signTransaction
    // Additional treatment for Kaikas compatibility
    web3.eth.signTransaction(obj)

Klaytn RPCs

  • Following functions calls Klaytn RPCs. See src/web3.ts
    web3.klay.blockNumber() // klay_blockNumber
    web3.net.networkID() // net_networkID