.toISOString(): string

import { fdu } from '@pyyupsk/fdu';

const date = fdu('2024-01-15T14:30:45');
date.toISOString();  // '2024-01-15T14:30:45.000Z'

const date2 = fdu('2024-12-25T00:00:00');
date2.toISOString();  // '2024-12-25T00:00:00.000Z'

const date = fdu('2024-01-15T14:30:45.123');
date.toISOString();  // '2024-01-15T14:30:45.123Z'

const date = fdu('2024-01-15T14:30:45');

// Store in database
db.insert({
  created_at: date.toISOString()
});

// Retrieve and recreate
const row = db.select();
const retrieved = fdu(row.created_at);

const date = fdu('2024-01-15T14:30:45');

// Send via API
fetch('/api/events', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    date: date.toISOString(),
    title: 'Event'
  })
});

const date = fdu('2024-01-15T14:30:45');

const data = {
  timestamp: date.toISOString(),
  event: 'User login'
};

const json = JSON.stringify(data);
// {"timestamp":"2024-01-15T14:30:45.000Z","event":"User login"}

const now = fdu();

console.log(`[${now.toISOString()}] Application started`);
// [2024-01-15T14:30:45.123Z] Application started

const now = fdu();

const filename = `backup-${now.toISOString()}.sql`;
// backup-2024-01-15T14:30:45.123Z.sql

// Remove colons for filesystem compatibility
const safeFilename = `backup-${now.toISOString().replace(/:/g, '-')}.sql`;
// backup-2024-01-15T14-30-45.123Z.sql