hide pro themes for alpha

docs/_utils/remove-data-alpha-elements.js

@@ -0,0 +1,23 @@
+import { parse } from 'node-html-parser';
+
+/**
+ * Eleventy plugin to add remove elements with <div data-alpha="remove"> from the alpha build.
+ */
+export function removeDataAlphaElements(options = {}) {
+  options = {
+    isAlpha: false,
+    ...options
+  };
+
+  return function (eleventyConfig) {
+    eleventyConfig.addTransform('remove-data-alpha-elements', content => {
+      const doc = parse(content, { blockTextElements: { code: true } });
+
+      if (options.isAlpha) {
+        doc.querySelectorAll('[data-alpha="remove"]').forEach(el => el.remove());
+      }
+
+      return doc.toString();
+    });
+  };
+}