lkt/muteRemoveliquidity.mjs

import Web3, { eth } from "web3";
import { BigNumber } from "bignumber.js";
import { Wallet, Provider } from "zksync-web3";
import { ethers } from "ethers";
import muteRouterAbi from "./muteRouterAbi.json" assert { type: "json" };
import mutePairAbi from "./mutePairAbi.json" assert { type: "json" };

const rpc = "https://zksync2-testnet.zksync.dev/";
const privateKey = "0xd768b0b3f8dedcb465ad680268453391f7da6ec4e1942a13fdfcdea8773aab3e";
const muteRouterAddress = "0x96c2Cf9edbEA24ce659EfBC9a6e3942b7895b5e8";
const usdcAddress = "0x0faF6df7054946141266420b43783387A78d82A9";

const provider = new Provider(rpc);
const wallet = new Wallet(privateKey).connect(provider);
const web3 = new Web3(new Web3.providers.HttpProvider(rpc));

const muteRouter = new web3.eth.Contract(muteRouterAbi, muteRouterAddress);
const wethAddress = await muteRouter.methods.WETH().call();
console.log(`wethAddress: ${wethAddress}`);
const pairInfo = await muteRouter.methods.getPairInfo([wethAddress, usdcAddress], false).call();
console.log(`pair: ${pairInfo.pair}`);
const pair = new web3.eth.Contract(mutePairAbi, pairInfo.pair);
const liquidity = await pair.methods.balanceOf(wallet.address).call();
console.log(`liquidity: ${liquidity}`);

const allowance = await pair.methods.allowance(wallet.address, muteRouterAddress).call();
console.log(`allowance: ${allowance}`);

if (allowance == 0) {
    const approve = pair.methods.approve(muteRouterAddress, ethers.constants.MaxUint256.toBigInt());
    await wallet.sendTransaction({
        to: pairInfo.pair,
        data: approve.encodeABI(),
        gasLimit: await approve.estimateGas({ from: wallet.address }),
    });
}

const removeLiquidity = await muteRouter.methods.removeLiquidityETHSupportingFeeOnTransferTokens(
    usdcAddress,
    ethers.BigNumber.from(liquidity).toHexString(),
    1,
    1,
    wallet.address,
    Math.floor(new Date().getTime() / 1000 + 60 * 30) + "",
    false
);
const gasLimit = await removeLiquidity.estimateGas({ from: wallet.address });
const tx = await wallet.sendTransaction({
    to: muteRouterAddress,
    data: removeLiquidity.encodeABI(),
    gasLimit: gasLimit,
});
console.log(tx);