withdrawERC721

Withdraw ERC-721 token from one user and returns a Voucher to the recipient on L1. The voucher still need to be created through a createVoucher call.

Usage

The following example withdraws the token 1 of the user who is submitting an input to the application.

import { createApp } from "@deroll/app";
import { createWallet } from "@deroll/wallet";
 
// create app
const app = createApp({ url: "http://127.0.0.1:5004" });
 
// create wallet
const wallet = createWallet();
 
app.addAdvanceHandler(wallet.handler);
 
const token = "0xc6582A9b48F211Fa8c2B5b16CB615eC39bcA653B"; // NFT address
app.addAdvanceHandler(async ({ metadata }) => {
    const user = metadata.msg_sender;
    const hasOne = wallet.erc721Has(token, user, 1n);
    if (hasOne) {
        const voucher = wallet.withdrawERC721(token, user, 1n); 
        await app.createVoucher(voucher);
    }
    return "accept";
});

Returns

Type: Voucher

Parameters

Type: Address

Address of ERC-721 token.

Type: string

User to withdraw from.

Type: bigint

Amount to withdraw.