Export NFT ids of owner to text file

export_nftids.js

const fs = require('fs');
const fetchNFTIDs = async () => {
  const NFT_ADDRESS='';
  const OWNER_ADDRESS='';
  const ETHERSCAN_APIKEY='';
  const res = await fetch(`https://api.etherscan.io/api?module=account&action=addresstokennftinventory&address=${OWNER_ADDRESS}&contractaddress=${NFT_ADDRESS}&page=1&offset=1000&apikey=${ETHERSCAN_APIKEY}`);
  if (res.ok) {
    const data = await res.json();

    const file = `nfts-${OWNER_ADDRESS}-${Date.now()}.txt`;
    console.log(`Writing ${data.result.length} NFTs to file ${file}`);
    fs.writeFileSync(file, JSON.stringify(data.result.map(v => v.TokenId)));
    console.log('Done.');
  }
};

fetchNFTIDs();