https://codeigniter.com/user_guide/libraries/cors.html

app/Config/Filters.php
```php
public array $filters = [
    // ...
    'cors' => [
        'before' => ['api/*'],
        'after' => ['api/*'],
    ],
];

```

app/Config/Routes.php
```php
// API routes (put below service('auth'))

// For Cors preflight check
$routes->group('', ['filter' => 'cors'], static function (RouteCollection $routes) {
$routes->options('api/(:any)', static function () {});
});




$routes->group("api", ["filter" => "cors", "namespace" => "App\Controllers\Api"], function($routes) {
$routes->post("register", "AuthController::register");
$routes->post("login", "AuthController::login", ["filter"=>"cors"]);
$routes->get("profile", "AuthController::profile");
$routes->get("logout", "AuthController::logout", ["filter"=>"apiauth"]);
 
$routes->get("invalid-access", "AuthController::accessDenied");
   
$routes->get("test2" , "AuthController::test2");
  
# WORKS
$routes->get("test" , "TestController::test");
//$routes->post("add-project", "ProjectController::addProject");
//$routes->get("list-projects", "ProjectController::listProjects");
//$routes->delete("delete-project/(:num)", "ProjectController::deleteProject/$1");
});
```

app/Config/Cors.php
```php

	'allowedOrigins' => ['*'],
	'allowedOriginsPatterns' => ['http://.*','https://.*'],
	'allowedMethods' => ['GET', 'POST', 'PUT', 'DELETE'],
	'allowedHeaders' => ['*'],
	'maxAge' => 7200,

```