> This page is for Developer.

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.bigcommerce.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.bigcommerce.com/_mcp/server.

## Catalyst Core Updates

* All labs have been updated to Catalyst 1.3.8.
* The `<Stream>` component pattern is discussed in greater detail, and labs have been refactored to make use of this pattern in the custom Product FAQs feature.
* The initial setup lab has been streamlined to start learners with the boilerplate required for the subsequent exercises.
* Discussion has been added of the built-in support for the Vercel Runtime Cache.
* Discussion of Partial Prerendering has been removed, as Catalyst has been updated to a stable version of Next.js that does not currently support it.