From 1e5641ba8eae66f1e613d4672bad3eb79bada121 Mon Sep 17 00:00:00 2001
From: Wesley Wigham <wwigham@gmail.com>
Date: Thu, 29 Mar 2018 16:05:31 -0700
Subject: [PATCH] Mangle comment for sorcery (#23006)

---
 src/services/services.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/services/services.ts b/src/services/services.ts
index 64e64ea1bad..77826fc20c3 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -1544,8 +1544,8 @@ namespace ts {
             return checker.getSymbolAtLocation(node);
         }
 
-
-        const sourceMapCommentRegExp = /^\/\/[@#] sourceMappingURL=(.+)$/gm;
+        // Sometimes tools can sometimes see the following line as a source mapping url comment, so we mangle it a bit (the [M])
+        const sourceMapCommentRegExp = /^\/\/[@#] source[M]appingURL=(.+)$/gm;
         const base64UrlRegExp = /^data:(?:application\/json(?:;charset=[uU][tT][fF]-8);base64,([A-Za-z0-9+\/=]+)$)?/;
         function scanForSourcemapURL(fileName: string) {
             const mappedFile = sourcemappedFileCache.get(toPath(fileName, currentDirectory, getCanonicalFileName));