Return undefined so we don't allocate

Author: timfish

packages/core/src/utils/prepareEvent.ts

@@ -174,6 +174,10 @@ export function applyDebugIds(event: Event, stackParser: StackParser): void {
   // Build a map of filename -> debug_id
   const filenameDebugIdMap = getFilenameToDebugIdMap(stackParser);
 
+  if (!filenameDebugIdMap) {
+    return;
+  }
+
   try {
     // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
     event!.exception!.values!.forEach(exception => {

packages/utils/src/debug-ids.ts

@@ -31,10 +31,10 @@ let cachedFilenameToDebugId: Map<string, string> | undefined;
 /**
  * Returns a map of filenames to debug identifiers.
  */
-export function getFilenameToDebugIdMap(stackParser: StackParser): Map<string, string> {
+export function getFilenameToDebugIdMap(stackParser: StackParser): Map<string, string> | undefined {
   const debugIdMap = GLOBAL_OBJ._sentryDebugIds;
   if (!debugIdMap) {
-    return new Map();
+    return undefined;
   }
 
   const debugIdKeys = Object.keys(debugIdMap);
@@ -89,6 +89,10 @@ export function getDebugImagesForResources(
 ): DebugImage[] {
   const filenameDebugIdMap = getFilenameToDebugIdMap(stackParser);
 
+  if (!filenameDebugIdMap) {
+    return [];
+  }
+
   const images: DebugImage[] = [];
   for (const path of resource_paths) {
     const debug_id = filenameDebugIdMap.get(path);