feat(docs,blog,pages): add support for "unlisted" front matter - hide md content in production (#8004)

Co-authored-by: sebastienlorber <lorber.sebastien@gmail.com>

packages/docusaurus-plugin-content-blog/src/props.ts

@@ -0,0 +1,34 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import type {TagsListItem, TagModule} from '@docusaurus/utils';
+import type {BlogTag, BlogTags} from '@docusaurus/plugin-content-blog';
+
+export function toTagsProp({blogTags}: {blogTags: BlogTags}): TagsListItem[] {
+  return Object.values(blogTags)
+    .filter((tag) => !tag.unlisted)
+    .map((tag) => ({
+      label: tag.label,
+      permalink: tag.permalink,
+      count: tag.items.length,
+    }));
+}
+
+export function toTagProp({
+  blogTagsListPath,
+  tag,
+}: {
+  blogTagsListPath: string;
+  tag: BlogTag;
+}): TagModule {
+  return {
+    label: tag.label,
+    permalink: tag.permalink,
+    allTagsPath: blogTagsListPath,
+    count: tag.items.length,
+    unlisted: tag.unlisted,
+  };
+}