Gist for my tutorial "Building a Gutenberg sidebar plugin Part 1: Registering the plugin with (oop) php". https://vanaf1979.nl/making-a-gutenberg-sidebar-plugin-part-1-registering-the-plugin-with-oop-php/

meatatags-class-enqueue-styles-method.php

<?php
class MetaTags {

    ...

    public function enqueue_styles() : void {

        \wp_enqueue_style(
            $this->pluginslug . '-styles',
            plugin_dir_url( __FILE__ ) . 'dist/css/metatags.css',
            array(),
            '1.0.0',
            'all'
        );

    }

}
?>