docs: guide setup (#10862)

apps/guide/src/mdx-components.tsx

@@ -0,0 +1,13 @@
+import { Popup, PopupContent, PopupTrigger } from 'fumadocs-twoslash/ui';
+import defaultMdxComponents from 'fumadocs-ui/mdx';
+import type { MDXComponents } from 'mdx/types';
+
+export function getMDXComponents(components?: MDXComponents): MDXComponents {
+	return {
+		...defaultMdxComponents,
+		Popup,
+		PopupContent,
+		PopupTrigger,
+		...components,
+	};
+}