server-index3.ts

initNode().then(() => {

  /* ... */

  // Subscribe to all invoices, mark posts as paid
  const stream = node.subscribeInvoices() as any as Readable<Invoice>;
  stream.on('data', chunk => {
    // Skip unpaid / irrelevant invoice updates
    if (!chunk.settled || !chunk.amtPaidSat || !chunk.memo) return;

    // Extract post id from memo, skip if we can't find an id
    const id = parseInt(chunk.memo.replace('Lightning Posts post #', ''), 10);
    if (!id) return;

    // Mark the invoice as paid!
    postsManager.markPostPaid(id);
  });
});