jcc-ethereum-utils
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Toolkit of crossing chain from Ethereum to SWTC chain
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# jcc-ethereum-utils
Toolkit of crossing chain from EVM networks to SWTC chain.
[](https://travis-ci.com/JCCDex/jcc-ethereum-utils)
[](https://coveralls.io/github/JCCDex/jcc-ethereum-utils?branch=master)
[](https://david-dm.org/JCCDex/jcc-ethereum-utils)
[](http://npm-stat.com/charts.html?package=jcc-ethereum-utils)
[](http://makeapullrequest.com)
## Description
Transfer token automatically from [Ethereum](https://www.ethereum.org/) to [SWTC](http://swtc.top/index.html#/) chain. Support ether and erc20 tokens.
e.g. you transfer 1 `eth` to [Ethereum Fingate](https://etherscan.io/address/0x3907acb4c1818adf72d965c08e0a79af16e7ffb8) from your ethereum address, If success the contract will automatically transfer 1 `jeth` to your swtc address from [Jingtum Fingate](https://swtcscan.jccdex.cn/#/wallet/?wallet=jsk45ksJZUB7durZrLt5e86Eu2gtiXNRN4) in a few minutes.
## Support token list of erc20
- [USDT](https://etherscan.io/address/0xdAC17F958D2ee523a2206206994597C13D831ec7)
- [JCC](https://etherscan.io/address/0x9BD4810a407812042F938d2f69f673843301cfa6)
- [EKT](https://etherscan.io/address/0xBAb165dF9455AA0F2AeD1f2565520B91DDadB4c8)
- [DABT](https://etherscan.io/address/0x1C6890825880566dd6Ad88147E0a6acE7930b7c0)
- [BIZ](https://etherscan.io/address/0x399f9A95305114efAcB91d1d6C02CBe234dD36aF)
- [SLASH](https://etherscan.io/address/0xE222e2e3517f5AF5e3abc667adF14320C848D6dA)
- [GSGC](https://etherscan.io/address/0x0ec2a5ec6a976d6d4c101fb647595c9d8d21779e)
**_If you wanna we support other erc20 token, please contact us._**
## Installtion
```shell
npm i jcc-ethereum-utils
```
## CDN
`jcc_ethereum_utils` as a global variable.
```javascript
<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](https://github.com/JCCDex/jcc-ethereum-utils/blob/master/docs/demo_below_0.1.4.md).
```javascript
// 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);
}
```
## API
see [API.md](https://github.com/JCCDex/jcc-ethereum-utils/blob/master/docs/API.md)