1 files changed, 10 insertions, 2 deletions
diff --git a/packages/bun-debug-adapter-protocol/src/debugger/sourcemap.ts b/packages/bun-debug-adapter-protocol/src/debugger/sourcemap.ts
index 3b3f05c6b..cae0eb526 100644
--- a/packages/bun-debug-adapter-protocol/src/debugger/sourcemap.ts
+++ b/packages/bun-debug-adapter-protocol/src/debugger/sourcemap.ts
@@ -80,7 +80,7 @@ class ActualSourceMap implements SourceMap {
 
     const { line: gline, column: gcolumn } = lineRange;
     return {
-      line: lineToLine(gline),
+      line: lineTo0BasedLine(gline),
       column: columnToColumn(gcolumn),
       verified: true,
     };
@@ -144,9 +144,17 @@ class NoopSourceMap implements SourceMap {
 const defaultSourceMap = new NoopSourceMap();
 
 export function SourceMap(url?: string): SourceMap {
-  if (!url || !url.startsWith("data:")) {
+  if (!url) {
     return defaultSourceMap;
   }
+  if (!url.startsWith("data:")) {
+    const match = url.match(/\/\/[#@]\s*sourceMappingURL=(.*)$/m);
+    if (!match) {
+      return defaultSourceMap;
+    }
+    const [_, sourceMapUrl] = match;
+    url = sourceMapUrl;
+  }
   try {
     const [_, base64] = url.split(",", 2);
     const decoded = Buffer.from(base64, "base64url").toString("utf8");