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
56 lines
1 KiB
Text
56 lines
1 KiB
Text
---
|
|
title: 'Invalid Custom Route `source`'
|
|
---
|
|
|
|
## Why This Error Occurred
|
|
|
|
A pattern could not be parsed when defining custom routes or a middleware `matcher`.
|
|
|
|
This could have been due to trying to use normal `RegExp` syntax like negative lookaheads (`?!exclude`) without following [`path-to-regexp`](https://github.com/pillarjs/path-to-regexp)'s syntax.
|
|
|
|
## Possible Ways to Fix It
|
|
|
|
Wrap the `RegExp` part of your `source` as an un-named parameter.
|
|
|
|
##### Custom Routes
|
|
|
|
**Before**
|
|
|
|
```js
|
|
{
|
|
source: '/feedback/(?!general)',
|
|
destination: '/feedback/general'
|
|
}
|
|
```
|
|
|
|
**After**
|
|
|
|
```js
|
|
{
|
|
source: '/feedback/((?!general).*)',
|
|
destination: '/feedback/general'
|
|
}
|
|
```
|
|
|
|
##### Middleware
|
|
|
|
**Before**
|
|
|
|
```ts filename="middleware.ts"
|
|
const config = {
|
|
matcher: '/feedback/(?!general)',
|
|
}
|
|
```
|
|
|
|
**After**
|
|
|
|
```ts filename="middleware.ts"
|
|
const config = {
|
|
matcher: '/feedback/((?!general).*)',
|
|
}
|
|
```
|
|
|
|
## Useful Links
|
|
|
|
- [path-to-regexp](https://github.com/pillarjs/path-to-regexp)
|
|
- [un-named parameters](https://github.com/pillarjs/path-to-regexp#unnamed-parameters)
|