The withdrawExitFaster method can be used to exit the withdraw process faster by using the txHash from withdrawStart method.

It is generally fast because it generates proof in the backend. You need to configure setProofAPI.

Note- withdrawStart transaction must be checkpointed in order to exit the withdraw.

import { setProofApi } from '@maticnetwork/maticjs'


const erc20RootToken = posClient.erc20(<root token address>, true);

// start withdraw process for 100 amount
const result = await erc20Token.withdrawExitFaster(<burn tx hash>);

const txHash = await result.getTransactionHash();

const txReceipt = await result.getReceipt();

Once the transaction is complete & checkpoint is completed, amount will be deposited to root chain.