first commit

wp-content/plugins/powerkit/modules/lazyload/public/js/lazysizes.config.js

@@ -0,0 +1,19 @@
+window.lazySizesConfig = window.lazySizesConfig || {};
+
+// Set Classes.
+window.lazySizesConfig.lazyClass    = 'pk-lazyload';
+window.lazySizesConfig.loadedClass  = 'pk-lazyloaded';
+window.lazySizesConfig.preloadClass = 'pk-lazypreload';
+window.lazySizesConfig.loadingClass = 'pk-lazyloading';
+
+// Set Attrs.
+window.lazySizesConfig.srcAttr    = 'data-pk-src';
+window.lazySizesConfig.srcsetAttr = 'data-pk-srcset';
+window.lazySizesConfig.sizesAttr  = 'data-pk-sizes';
+
+// Set sizes if the image is not width.
+document.addEventListener( 'lazyloaded', function (e) {
+	if ( ! e.target.getAttribute( 'width' ) ) {
+		e.target.setAttribute( 'sizes', e.target.getAttribute( 'data-ls-sizes' ) );
+	}
+} );