# boolean_smtp_vite_dev_server_url

> Filters the resolved Vite dev-server URL.

Filter · Tier C · Since 1.0.0

Return the modified URL to override where the admin UI loads its dev-mode script from. Return an empty string to force production assets.

## Signature

```php
add_filter( 'boolean_smtp_vite_dev_server_url', $callback, 10, 1 );
```

## Parameters

| Name | Type | Description |
| --- | --- | --- |
| `$url` | `string` | URL resolved so far from the hot file and dev-server constants. |

**Returns** `string` — The filtered URL.

## Fires in

- [app/Providers/AppServiceProvider.php:1311](https://github.com/booleanpress/boolean-smtp-src/blob/main/app/Providers/AppServiceProvider.php#L1311) — `BooleanSmtp\Providers\AppServiceProvider::viteDevServerUrl()`

## Example

```php
add_filter( 'boolean_smtp_vite_dev_server_url', function ( string $url ) {
    return $url;
}, 10, 1 );
```