From 5e1d896fbe37c7377ce2563ef29bae8d4be6f349 Mon Sep 17 00:00:00 2001
From: Jocelyn Badgley <joc@twipped.com>
Date: Mon, 5 Sep 2022 16:01:27 -0700
Subject: [PATCH] Add file and line number to @mdx/loader error output

---
 packages/loader/lib/index.js | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/packages/loader/lib/index.js b/packages/loader/lib/index.js
index ba961f215..106771c78 100644
--- a/packages/loader/lib/index.js
+++ b/packages/loader/lib/index.js
@@ -62,10 +62,19 @@ export function loader(value, callback) {
     map.set(hash, process)
   }
 
-  process({value, path: this.resourcePath}).then((file) => {
-    callback(null, file.value, file.map)
-    return file
-  }, callback)
+  process({value, path: this.resourcePath}).then(
+    (file) => {
+      callback(null, file.value, file.map)
+    },
+    (e) => {
+      let loc = '';
+      if (e.position) {
+        loc = `:${e.position.start.line}:${e.position.start.column}`;
+      }
+      e.message = `${e.message} while parsing ${this.resourcePath}${loc}`;
+      callback(e);
+    }
+  )
 }
 
 /**