Quick Sample Usage for Warden Swap SDK

wardenswapSdkSample.js

// npm install @wardenswap/bestrate-sdk ethers
const { WardenBestRate } = require('@wardenswap/bestrate-sdk')
const { ethers } = require('ethers')

// WardenRouter_2_0.abi.json can be found here: https://gist.github.com/AncientWarden/4aeae54509dd21020ab29a13c804cb57
// or BSCScan: https://bscscan.com/address/0x451ef8D6B645a60115EB8b8bEa76B39C0C761004#code
const wardenRouterAbi = require('./WardenRouter_2_0.abi.json')

const WARDEN_ROUTER_ADDRESS = '0x451ef8D6B645a60115EB8b8bEa76B39C0C761004'

const src = '0xe9e7cea3dedca5984780bafc599bd69add087d56' // source Token Address: BUSD
const dest = '0x0feadcc3824e7f3c12f40e324a60c23ca51627fc' // destination Token Address: WAD
const amountIn = ethers.utils.parseUnits('10', 18) // 10 BUSD in BigNumber
const gasFee = ethers.BigNumber.from('5000000000') // default BSC gas fee for rate calculation
const options = { enableSplit: false } // calculate without using split trades

// initialize provider, requires version of ether.js >= 5.4.0
const provider = new ethers.providers.JsonRpcProvider('https://bsc-dataseed.binance.org')

async function getQuote() {
    // initialize the warden client
    const wardenClient = new WardenBestRate(provider, 'bsc')

    // get the quote detail with warden client
    const quote = await wardenClient.getQuote(src, dest, amountIn, gasFee, options)
    console.log('quote:', quote)

    return quote
}

async function swap(quote) {
    // add the acceptable slippage of 1% to amountOut
    // since the actual amount can be lower or higher.
    const minAmountOut = ethers.BigNumber.from(quote.amountOut).mul(99).div(100)

    // Get the signer with private key
    // For using with Metamask, see: https://docs.ethers.io/v5/getting-started/#getting-started--connecting
    const signer = new ethers.Wallet(YOUR_PRIVATE_KEY, provider)
    const wardenContract = new ethers.Contract(WARDEN_ROUTER_ADDRESS, wardenRouterAbi, signer)

    // send a swap transaction to warden contract
    const swapTx = await wardenContract.swap(
        quote.swapAddress,
        quote.data,
        quote.depositAddress,
        src,
        amountIn,
        dest,
        minAmountOut,
        signer.address, // dest token receiver
        0, // Partner ID for profit sharing, default to 0
        0) // metadata, reserved for future use

    console.log(`swap tx successfully submitted, tx hash: ${swapTx.hash}`)
}

getQuote().then(quote => swap(quote))