Help me fix this error

[spiral arch]

Failed to generate static paths for /components/[...slug]:
[Error: A required parameter (slug) was not provided as an array received string in generateStaticParams for /components/[...slug]] {
type: 'Error'
}

export async function generateStaticParams() {
const docsDirectory = join(process.cwd(), "/src/_docs");
const files = fg.sync([${docsDirectory}/**/*.mdx], {
dot: true,
});
return files.map((file) => ({
slug: relative(docsDirectory, file).split("/")[1], // e.g., [components, text, page.mdx]
}));
}

import ArticleContent from "@/components/ArticleContent";
import fg from "fast-glob";
import { notFound } from "next/navigation";
import { join, relative } from "path";

export default async function Page({
params,
}: {
params: Promise<{ slug: string }>;
}) {
const { slug } = await params;

try {
const { default: MDXContent } = await import(@/_docs/${slug}/page.mdx);

return (
  <ArticleContent>
    <MDXContent />
  </ArticleContent>
);

} catch {
notFound();
}
}

[open fog]

Hi @spiral arch. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

---

The error occurs because your dynamic route is a catch-all segment ([...slug]), which means Next.js expects the slug parameter to be an array of strings, not a single string. However, in your generateStaticParams function, you are returning slug as a string.

How to fix:
You need to ensure that slug is always an array. Update your generateStaticParams function like this:

export async function generateStaticParams() {
  const docsDirectory = join(process.cwd(), "/src/_docs");
  const files = fg.sync([`${docsDirectory}/**/*.mdx`], {
    dot: true,
  });
  return files.map((file) => ({
    slug: relative(docsDirectory, file).split("/"), // returns an array
  }));
}

And update your Page component to expect slug as an array:

export default async function Page({
  params,
}: {
  params: Promise<{ slug: string[] }>;
}) {
  const { slug } = await params;

  try {
    const { default: MDXContent } = await import(`@/_docs/${slug.join("/")}/page.mdx`);

    return (
      <ArticleContent>
        <MDXContent />
      </ArticleContent>
    );
  } catch {
    notFound();
  }
}

This matches the documented pattern for catch-all dynamic segments, where the parameter is always an array of strings, not a single string. See the official example for catch-all segments in the Next.js docs for reference:
generateStaticParams - Catch-all Dynamic Segment

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

@spiral arch Kapa.ai is still learning and improving, please let me know how I did by reacting below.

[spiral arch]

if I have a node module installed in my next.js project and the node module's function is causing an issue, how do I debug the node module? I tried locating it in node_modules and then added a console log but it didn't do anything

@open fog if I have a node module installed in my next.js project and the node module's function is causing an issue, how do I debug the node module? I tried locating it in node_modules and then added a console log but it didn't do anything

[open fog]

Let me check the knowledge base for you again. Give me one moment! :books:

---

To debug a function inside a node module in your Next.js project, you can use the Node.js debugger with source maps, as supported by Next.js. Here are the recommended steps:

1. Start Next.js with the Node.js Inspector
   Run your development server with the --inspect flag so you can attach a debugger. For example, update your package.json script:

   {
     "scripts": {
       "dev": "NODE_OPTIONS='--inspect' next dev"
     }
   }
   

   On Windows, use cross-env to set environment variables:

   {
     "scripts": {
       "dev": "cross-env NODE_OPTIONS='--inspect' next dev"
     }
   }
   

   Then run npm run dev or yarn dev to start your server with debugging enabled
   Debugging with Browser DevTools.

2. Attach a Debugger

   • Open Chrome and go to chrome://inspect, or use VS Code's debugger.
   • Attach to the Node.js process as described in the Next.js debugging guide.

3. Set Breakpoints in node_modules

   • In the debugger (Chrome DevTools or VS Code), navigate to the file inside node_modules where the problematic function is defined.
   • Set a breakpoint directly in the debugger UI.
   • When your code runs and hits that function, execution will pause at your breakpoint, allowing you to inspect variables and step through the code.

Note:

• Adding console.log statements directly in node_modules may not always work as expected because of module caching, build optimizations, or the way Next.js bundles dependencies.
• Debugging with breakpoints is more reliable for third-party modules.

For more details, see the official Next.js documentation on debugging with browser DevTools and VS Code:
How to use debugging tools with Next.js
Debugging with Browser DevTools

If you still don't see your changes or breakpoints being hit, make sure your development server is restarted after modifying files in node_modules, and that your debugger is properly attached to the running Node.js process.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: