thekid/Home.class.php

## class.pth
vendor/autoload.php

## composer.json
{
  "require": {
    "xp-forge/frontend"   : "dev-master",
    "xp-forge/handlebars" : "dev-master"
  }
}

## Home.class.php
<?php

use web\frontend\{Handler, Get, Param};

#[Handler]
class Home {

  #[Get]
  public function get(
    #[Param('name')]
    $param
  ) {
    return ['name' => $param ?: 'World'];
  }
}

## home.handlebars
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Hello {{name}}</title>
  </head>
  <body>
    <h1>Hello {{name}}</h1>
  </body>
</html>

## Site.class.php
<?php

use web\Application;
use web\frontend\{Frontend, Templates, AssetsFrom};

class Site extends Application {

  /** @return [:var] */
  protected function routes() {
    $assets= new AssetsFrom($this->environment->webroot());
    $templates= new TemplateEngine($this->environment->webroot());

    return [
      '/favicon.ico' => $assets,
      '/static'      => $assets,
      '/'            => new Frontend(new Home(), $templates)
    ];
  }
}

## TemplateEngine.class.php
<?php

use com\handlebarsjs\{HandlebarsEngine, FilesIn};
use io\Path;
use web\frontend\Templates;

class TemplateEngine implements Templates {
  private $backing;

  public function __construct(Path $templates) {
    $this->backing= (new HandlebarsEngine())->withTemplates(new FilesIn($templates));
  }

  public function write($name, $context, $out) {
    $this->backing->write($this->backing->load($name), $context, $out);
  }
}
	{
	"require": {
	"xp-forge/frontend" : "dev-master",
	"xp-forge/handlebars" : "dev-master"
	}
	}
	<?php

	use web\frontend\{Handler, Get, Param};

	#[Handler]
	class Home {

	#[Get]
	public function get(
	#[Param('name')]
	$param
	) {
	return ['name' => $param ?: 'World'];
	}
	}
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>Hello {{name}}</title>
	</head>
	<body>
	<h1>Hello {{name}}</h1>
	</body>
	</html>
	<?php

	use web\Application;
	use web\frontend\{Frontend, Templates, AssetsFrom};

	class Site extends Application {

	/** @return [:var] */
	protected function routes() {
	$assets= new AssetsFrom($this->environment->webroot());
	$templates= new TemplateEngine($this->environment->webroot());

	return [
	'/favicon.ico' => $assets,
	'/static' => $assets,
	'/' => new Frontend(new Home(), $templates)
	];
	}
	}
	<?php

	use com\handlebarsjs\{HandlebarsEngine, FilesIn};
	use io\Path;
	use web\frontend\Templates;

	class TemplateEngine implements Templates {
	private $backing;

	public function __construct(Path $templates) {
	$this->backing= (new HandlebarsEngine())->withTemplates(new FilesIn($templates));
	}

	public function write($name, $context, $out) {
	$this->backing->write($this->backing->load($name), $context, $out);
	}
	}