diff --git a/docs/quickstarts/fastify.mdx b/docs/quickstarts/fastify.mdx index 999d8d82da..deccaba6bc 100644 --- a/docs/quickstarts/fastify.mdx +++ b/docs/quickstarts/fastify.mdx @@ -37,6 +37,8 @@ Learn how to integrate Clerk into your Fastify backend for secure user authentic > [!IMPORTANT] > [Fastify is only compatible with Next.js versions 13.4 and below](https://github.com/fastify/fastify-nextjs). If you're using a newer version of Next.js, consider using a different backend framework that supports the latest Next.js features. +> +> This guide uses ECMAScript Modules (ESM). To use ESM in your project, you must include `"type": "module"` in your `package.json`. > [!NOTE] > If you're using ECMAScript Modules (ESM) in your project, you must include `"type": "module"` in your `package.json` to enable ESM support in Node.js.