Fix bug with CORS options for an array of one item for onCall (#1563)…

… (#1564) Co-authored-by: Daniel Lee <danielylee@google.com>
firebase · Aug 26, 2024 · 097b73c · 097b73c
1 parent e0f786f
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,4 @@
 - Fix retry in event triggered functions. (#1463)
 - Expose retry configuration in v2 RTDB trigger (#1588)
+- Fix CORS options for v2 callable functions (#1564)
 - Remove invalid `enforceAppCheck` option for v2 onRequest trigger (#1477)
diff --git a/src/v2/providers/https.ts b/src/v2/providers/https.ts
@@ -375,7 +375,7 @@ export function onCall<T = any, Return = any | Promise<any>>(
   // on the origin header of the request. If there is only one element in the
   // array, this is unnecessary.
   if (Array.isArray(origin) && origin.length === 1) {
-    origin = origin[1];
+    origin = origin[0];
   }
 
   // onCallHandler sniffs the function length to determine which API to present.