Hello Roots ServerSideRender: use LazyImage for frontend and static generation in backend

serverside.php

<?php

if (array_key_exists('context', $_GET) && $_GET['context'] === 'edit') {
	$featured_image = wp_get_attachment_image(get_post_thumbnail_id($post->ID), $size, false, ['class' => 'b-articles-latest__entryimage']);
	if (!empty($featured_image)) {
		$featured_image = '<figure class="b-articles-latest__entryfigure">'.$featured_image.'</figure>';
	}
} else {
	$featured_image = sht_theme()->Package->Lazysizes->getLazyImage(get_post_thumbnail_id($post->ID), $size, 'b-articles-latest__entryfigure', 'b-articles-latest__entryimage');
}