From 9d8e9466138a5f55446e99dc40778bbdf2d27352 Mon Sep 17 00:00:00 2001
From: Emanuele Stoppa <my.burning@gmail.com>
Date: Wed, 24 May 2023 10:00:21 +0100
Subject: [PATCH] fix: detect `mdx` files using full extension

---
 .changeset/lazy-zebras-invent.md       | 6 ++++++
 packages/astro/src/content/runtime.ts  | 2 +-
 packages/integrations/mdx/src/index.ts | 2 +-
 3 files changed, 8 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/lazy-zebras-invent.md

diff --git a/.changeset/lazy-zebras-invent.md b/.changeset/lazy-zebras-invent.md
new file mode 100644
index 000000000000..1c2abb981edb
--- /dev/null
+++ b/.changeset/lazy-zebras-invent.md
@@ -0,0 +1,6 @@
+---
+'@astrojs/mdx': patch
+'astro': patch
+---
+
+Detect `mdx` files using their full extension
diff --git a/packages/astro/src/content/runtime.ts b/packages/astro/src/content/runtime.ts
index f38d9192a263..9187c4fced77 100644
--- a/packages/astro/src/content/runtime.ts
+++ b/packages/astro/src/content/runtime.ts
@@ -306,7 +306,7 @@ async function render({
 
 			let props = baseProps;
 			// Auto-apply MDX components export
-			if (id.endsWith('mdx')) {
+			if (id.endsWith('.mdx')) {
 				props = {
 					components: mod.components ?? {},
 					...baseProps,
diff --git a/packages/integrations/mdx/src/index.ts b/packages/integrations/mdx/src/index.ts
index 2ccf6626654b..7e8d17e3d066 100644
--- a/packages/integrations/mdx/src/index.ts
+++ b/packages/integrations/mdx/src/index.ts
@@ -95,7 +95,7 @@ export default function mdx(partialMdxOptions: Partial<MdxOptions> = {}): AstroI
 								// Override transform to alter code before MDX compilation
 								// ex. inject layouts
 								async transform(_, id) {
-									if (!id.endsWith('mdx')) return;
+									if (!id.endsWith('.mdx')) return;
 
 									// Read code from file manually to prevent Vite from parsing `import.meta.env` expressions
 									const { fileId } = getFileInfo(id, config);