docs: guide setup (#10862)

apps/guide/source.config.ts

@@ -0,0 +1,24 @@
+import { rehypeCodeDefaultOptions } from 'fumadocs-core/mdx-plugins';
+import { defineConfig, defineDocs } from 'fumadocs-mdx/config';
+import { transformerTwoslash } from 'fumadocs-twoslash';
+import { createFileSystemTypesCache } from 'fumadocs-twoslash/cache-fs';
+
+export const docs = defineDocs({
+	dir: 'content/docs',
+});
+
+transformerTwoslash({
+	typesCache: createFileSystemTypesCache(),
+});
+
+export default defineConfig({
+	mdxOptions: {
+		rehypeCodeOptions: {
+			themes: {
+				light: 'github-light',
+				dark: 'github-dark',
+			},
+			transformers: [...(rehypeCodeDefaultOptions.transformers ?? []), transformerTwoslash()],
+		},
+	},
+});