3 files changed, 24 insertions, 4 deletions
diff --git a/js/src/builtin/Promise.cpp b/js/src/builtin/Promise.cpp
index 021f6021f..8fd39e7bb 100644
--- a/js/src/builtin/Promise.cpp
+++ b/js/src/builtin/Promise.cpp
@@ -11,11 +11,11 @@
 #include "mozilla/TimeStamp.h"
 
 #include "jscntxt.h"
+#include "jsexn.h"
 
 #include "gc/Heap.h"
 #include "js/Debug.h"
 #include "vm/AsyncFunction.h"
-#include "vm/SelfHosting.h"
 
 #include "jsobjinlines.h"
 
@@ -783,9 +783,7 @@ RejectMaybeWrappedPromise(JSContext *cx, HandleObject promiseObj, HandleValue re
             // interpreter frame active right now. If a thenable job with a
             // throwing `then` function got us here, that'll not be the case,
             // so we add one by throwing the error from self-hosted code.
-            FixedInvokeArgs<1> getErrorArgs(cx);
-            getErrorArgs[0].set(Int32Value(JSMSG_PROMISE_ERROR_IN_WRAPPED_REJECTION_REASON));
-            if (!CallSelfHostedFunction(cx, "GetInternalError", reason, getErrorArgs, &reason))
+            if (!GetInternalError(cx, JSMSG_PROMISE_ERROR_IN_WRAPPED_REJECTION_REASON, &reason))
                 return false;
         }
     }
diff --git a/js/src/jsexn.cpp b/js/src/jsexn.cpp
index 3fc9200c1..72f03ea55 100644
--- a/js/src/jsexn.cpp
+++ b/js/src/jsexn.cpp
@@ -32,6 +32,7 @@
 #include "vm/ErrorObject.h"
 #include "vm/GlobalObject.h"
 #include "vm/SavedStacks.h"
+#include "vm/SelfHosting.h"
 #include "vm/StringBuffer.h"
 
 #include "jsobjinlines.h"
@@ -1091,3 +1092,19 @@ js::ValueToSourceForError(JSContext* cx, HandleValue val, JSAutoByteString& byte
         return "<<error converting value to string>>";
     return bytes.encodeLatin1(cx, str);
 }
+
+bool
+js::GetInternalError(JSContext* cx, unsigned errorNumber, MutableHandleValue error)
+{
+    FixedInvokeArgs<1> args(cx);
+    args[0].set(Int32Value(errorNumber));
+    return CallSelfHostedFunction(cx, "GetInternalError", NullHandleValue, args, error);
+}
+
+bool
+js::GetTypeError(JSContext* cx, unsigned errorNumber, MutableHandleValue error)
+{
+    FixedInvokeArgs<1> args(cx);
+    args[0].set(Int32Value(errorNumber));
+    return CallSelfHostedFunction(cx, "GetTypeError", NullHandleValue, args, error);
+}
diff --git a/js/src/jsexn.h b/js/src/jsexn.h
index 00120d89c..ee69e3c50 100644
--- a/js/src/jsexn.h
+++ b/js/src/jsexn.h
@@ -131,6 +131,11 @@ class AutoAssertNoPendingException
 extern const char*
 ValueToSourceForError(JSContext* cx, HandleValue val, JSAutoByteString& bytes);
 
+bool
+GetInternalError(JSContext* cx, unsigned errorNumber, MutableHandleValue error);
+bool
+GetTypeError(JSContext* cx, unsigned errorNumber, MutableHandleValue error);
+
 } // namespace js
 
 #endif /* jsexn_h */