---
title: Internal
description: Preview-only page for internal tools, draft changelogs, and testing utilities.
type: overview
---

<Callout type="warn">
This page is only visible on preview deployments and local development. It does not appear in production.
</Callout>

## Preview Package

<PreviewInstall />

## Draft Changelogs

Changelog entries staged here for review before publishing to the Vercel website.

- [Serializable AbortController and AbortSignal](/docs/internal/serializable-abort-controller) — March 12, 2026
