Jcc-ethereum-utils NPM

jcc-ethereum-utils

Toolkit of crossing chain from EVM networks to SWTC chain.

npm

Description

Transfer token automatically from Ethereum to SWTC chain. Support ether and erc20 tokens.

e.g. you transfer 1 eth to Ethereum Fingate from your ethereum address, If success the contract will automatically transfer 1 jeth to your swtc address from Jingtum Fingate in a few minutes.

Support token list of erc20

If you wanna we support other erc20 token, please contact us.

Installtion

npm i jcc-ethereum-utils

CDN

jcc_ethereum_utils as a global variable.

<script src="https://unpkg.com/jcc-ethereum-utils/dist/jcc-ethereum-utils.min.js"></script>

Usage

Breaking changes since 0.1.4, if you used 0.1.3 see this demo.

// demo
import { Fingate, Ethereum, ERC20 } from "jcc-ethereum-utils";

// Ethereum node
const node = "https://eth626892d.jccdex.cn";

// Your ethereum secret
const ethereumSecret = "";

// Your ethereum address
const ethereumAddress = "";

// Your swtc address
const swtcAddress = "";

// Deposit amount
const amount = "1";

// Ethereum fingate contract address, don't change it.
const scAddress = "0x3907acb4c1818adf72d965c08e0a79af16e7ffb8";

try {
  // deposit 1 ETH
  const ethereumInstance = new Ethereum(node);
  ethereumInstance.initWeb3();

  const fingateInstance = new Fingate();
  fingateInstance.init(scAddress, ethereumInstance);

  // Check if has pending order, if has don't call the next deposit api
  const state = await fingateInstance.depositState(ethereumAddress);

  if (fingateInstance.isPending(state)) {
    return;
  }

  // start to transfer 1 ETH to fingate address
  const hash = await fingateInstance.deposit(ethereumSecret, swtcAddress, amount);
  console.log(hash);
} catch (error) {
  console.log(error);
}

// deposit erc20 token

try {
  // deposit 1 JCC

  // JCC contract address
  const jccContractAddress = "0x9BD4810a407812042F938d2f69f673843301cfa6";

  const ethereumInstance = new Ethereum(node);
  ethereumInstance.initWeb3();

  const erc20Instance = new ERC20();
  erc20Instance.init(jccContractAddress, ethereumInstance);

  const fingateInstance = new Fingate();
  fingateInstance.init(scAddress, ethereumInstance);

  fingateInstance.initErc20(erc20Instance);

  // Check if has pending order, if has don't call depositErc20 api
  const state = await fingateInstance.depositState(address, jccContractAddress);

  if (fingateInstance.isPending(state)) {
    return;
  }

  const amount = "1";

  const receipts = await fingateInstance.depositErc20(ethereumSecret, swtcAddress, amount);
  console.log(receipts);
} catch (error) {
  console.log(error);
}