44d1a1cb15
This PR is part of a larger effort to migrate error messages to MDX and use App Router: https://github.com/vercel/front/pull/23459
121 lines
1.6 KiB
Text
121 lines
1.6 KiB
Text
---
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title: Invalid Page / API Route Config
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---
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## Why This Error Occurred
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In one of your pages or API Routes, you used `export const config` with an invalid value.
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## Possible Ways to Fix It
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- The page's `config` must be an object initialized directly when being exported and not modified dynamically.
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- The `config` object must only contain static constant literals without expressions.
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<table>
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<thead>
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<tr>
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<th>Not Allowed</th>
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<th>Allowed</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>
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```js
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// `config` should be an object
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export const config = 'hello world'
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```
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</td>
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<td>
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```js
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export const config = {}
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```
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</td>
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</tr>
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<tr>
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<td>
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```js
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export const config = {}
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// `config.amp` is defined after `config` is exported
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config.amp = true
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// `config.amp` contains a dynamic expression
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export const config = {
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amp: 1 + 1 > 2,
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}
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```
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</td>
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<td>
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```js
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export const config = {
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amp: true,
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}
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export const config = {
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amp: false,
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}
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```
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</td>
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</tr>
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<tr>
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<td>
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```js
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// `config.runtime` contains a dynamic expression
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export const config = {
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runtime: `node${'js'}`,
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}
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```
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</td>
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<td>
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```js
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export const config = {
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runtime: 'nodejs',
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}
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export const config = {
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runtime: `nodejs`,
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}
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```
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</td>
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</tr>
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<tr>
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<td>
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```js
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// Re-exported `config` is not allowed
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export { config } from '../config'
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```
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</td>
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<td>
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```js
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export const config = {}
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```
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</td>
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</tr>
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</tbody>
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</table>
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## Useful Links
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- [Enabling AMP Support](/docs/pages/building-your-application/configuring/amp)
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- [API Routes Request Helpers](/docs/pages/building-your-application/routing/api-routes)
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- [Edge and Node.js Runtimes](/docs/pages/building-your-application/rendering/edge-and-nodejs-runtimes)
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