invalid-page-config.mdx

The React Framework

invalid-page-config.mdx

title: Invalid Page / API Route Config

In one of your pages or API Routes, you used export const config with an invalid value.

The page's config must be an object initialized directly when being exported and not modified dynamically.
The config object must only contain static constant literals without expressions.

<table> <thead> <tr> <th>Not Allowed</th> <th>Allowed</th> </tr> </thead> <tbody> <tr> <td>

// `config` should be an object
export const config = 'hello world'

</td> <td>

export const config = {}

</td> </tr> <tr> <td>

// `config.runtime` contains a dynamic expression
export const config = {
  runtime: `node${'js'}`,
}

</td> <td>

export const config = {
  runtime: 'nodejs',
}
export const config = {
  runtime: `edge`,
}

</td> </tr> <tr> <td>

// Re-exported `config` is not allowed
export { config } from '../config'

</td> <td>

export const config = {}

</td> </tr> </tbody> </table>

Rendered from the public repository vercel/next.js on GitHub; content belongs to its authors. Cached for up to an hour.