TYPO3 routeEnhancers with suffix '.html' on rootpage - typo3

Question

Is there still no option to have the baseurl like 'www.mysite.com' if routeEnhancers are configured with '.html' suffix?
In my opinion this should be a basic feature but I can't find any solution. Redirecting the Homepage Link is not an option, as canonicals are still pointing to the wrong URL (www.mysite.com/index.html)
Is there any solution?
My configuration looks like this:
routeEnhancers:
PageTypeSuffix:
type: PageType
default: '.html'
index: index
map:
.html: 0

Answer 1

The reported issue on forge.typo3.org is still open (as of September 2019).
For the time beeing, you can provide a custom PageType decorator which achieves the desired result. Daniel Dorndorf, the developer who reported the issue, kindly posted the source code for this:
/Classes/Routing/Enhancer/CustomPageTypeDecorator.php
<?php
namespace Brand\Extensionname\Classes\Routing\Enhancer;
use TYPO3\CMS\Core\Routing\Enhancer\PageTypeDecorator;
use TYPO3\CMS\Core\Routing\RouteCollection;
/**
* Class CustomPageTypeDecorator
*/
class CustomPageTypeDecorator extends PageTypeDecorator
{
public const IGNORE_INDEX = [
'/index.html',
'/index/',
];
public const ROUTE_PATH_DELIMITERS = ['.', '-', '_', '/'];
/**
* #param \TYPO3\CMS\Core\Routing\RouteCollection $collection
* #param array $parameters
*/
public function decorateForGeneration(RouteCollection $collection, array $parameters): void
{
parent::decorateForGeneration($collection, $parameters);
/**
* #var string $routeName
* #var \TYPO3\CMS\Core\Routing\Route $route
*/
foreach ($collection->all() as $routeName => $route) {
$path = $route->getPath();
if (true === \in_array($path, self::IGNORE_INDEX, true)) {
$route->setPath('/');
}
}
}
}
ext_localconf.php
<?php
defined('TYPO3_MODE') or die();
// Register custom PageTypeDecorator:
$GLOBALS['TYPO3_CONF_VARS']['SYS']['routing']['enhancers'] += ['CustomPageType' => \Brand\Extensionname\Classes\Routing\Enhancer\CustomPageTypeDecorator::class];
Add this to your template extension, adjust the PHP namespace (\Brand\Extensionname\) and you're done.
config.yaml
PageTypeSuffix:
type: CustomPageType
default: '.html'
index: 'index'
map:
'.html': 0