Invalid type for `getFullHex`

[sharifzadesina]

MoneroTx.getFullHex is typed as string, but it sometimes also returns undefined, it should be typed as string | undefined.

The code below is an example of undefined return:

import monerojs, { MoneroWalletListener } from 'monero-ts';

const wallet = await monerojs.createWalletFull({
  password: 'ssp',
  networkType: 'testnet',
  privateSpendKey: 'b035cf0e92334bcb4cc35cbe06102582341bc9cc9392bf626b1af4285a53f97d',
  server: 'http://node.monerodevs.org:28089',
  proxyToWorker: false,
});

function syncListener(wallet: any, to: number) {
  return new class extends MoneroWalletListener {
    async onSyncProgress(height: number) {
      if (height >= to) wallet.stopSyncing();
    }
  }
}

const fromHeight = 2510731;
const toHeight = 2510731;

await wallet.sync(syncListener(wallet, toHeight), fromHeight);
const txs = await wallet.getTxs({ minHeight: fromHeight, maxHeight: toHeight, isIncoming: true });

console.log(txs[0].getFullHex());