TikTok Pixel ttq.track('CompletePayment')

analytics.subscribe('checkout_completed', (event) => {
  const { checkout } = event.data;
  if (!checkout || !checkout.totalPrice) return;

  // window.ttq does not exist in the sandbox (no DOM). Forward to TikTok's
  // Events API (server-side) instead — sandbox-correct equivalent of
  // ttq.track('CompletePayment'). Replace PIXEL_CODE and ACCESS_TOKEN
  // (TikTok Events Manager > your pixel > Settings > Events API).
  fetch(`https://business-api.tiktok.com/open_api/v1.3/event/track/`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json', 'Access-Token': 'ACCESS_TOKEN' },
    keepalive: true,
    body: JSON.stringify({
      pixel_code: 'PIXEL_CODE',
      event: 'CompletePayment',
      event_id: checkout.token,
      timestamp: new Date().toISOString(),
      context: { page: { url: undefined } },
      properties: {
        value: checkout.totalPrice.amount,
        currency: checkout.totalPrice.currencyCode,
        content_ids: checkout.lineItems.map((i) => i.variant && i.variant.id).filter(Boolean),
        content_type: 'product',
      },
    }),
  });
});

Legacy pattern detected via: ttq\.track\(\s*['"]CompletePayment['"]