diff --git a/README.md b/README.md
index 87357b8..f9f2abf 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ Inside of your Astro project, you'll see the following folders and files:
 └── tsconfig.json
 ```
 
-Astro looks for `.astro` or `.md` files in the `src/pages/` directory. Each page is exposed as a route based on its file name.
+Astro looks for `.astro`, `.md` and `.mdx` files in the `src/pages/` directory. Each page is exposed as a route based on its file name.
 
 There's nothing special about `src/components/`, but that's where we like to put any Astro/React/Vue/Svelte/Preact components.
 
diff --git a/tsconfig.json b/tsconfig.json
index e8a9e55..7472ab1 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,7 @@
 {
     "extends": "astro/tsconfigs/base",
     "compilerOptions": {
-        "strictNullChecks": true
+        "strictNullChecks": true,
+        "allowJs": true
     }
 }
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