ITemplateHelpersProviderExample.php

<?php

class HelperProvider implements Flame\Modules\Template\IHelperProvider
{

	/**
	 * Provide custom helper registration
	 *
	 * @param Engine $engine
	 * @return void
	 */
	public function register(Latte\Engine $engine)
	{
		$engine->addFilter('helperName', function ($node) {
			echo 'do-everything-with-that' . $node;
		});
	}
}

class HelperExtension extends Nette\DI\CompilerExtension implements Flame\Modules\Providers\ITemplateHelpersProvider
{

    /**
     * Return list of helpers definitions or providers
     *
     * @return array
     */
    public function getHelpersConfiguration()
    {
        return array(
            'HelperProvider'
        );
    }
}