Fallback to json if integer exceeds 64-bit range

Author: q0w

mypy/util.py

@@ -928,11 +928,19 @@ def quote_docstring(docstr: str) -> str:
 def json_dumps(obj: object, debug: bool = False) -> bytes:
     if orjson is not None:
         if debug:
-            return orjson.dumps(obj, option=orjson.OPT_INDENT_2 | orjson.OPT_SORT_KEYS)  # type: ignore[no-any-return]
+            dumps_option = orjson.OPT_INDENT_2 | orjson.OPT_SORT_KEYS
         else:
             # TODO: If we don't sort keys here, testIncrementalInternalScramble fails
             # We should document exactly what is going on there
-            return orjson.dumps(obj, option=orjson.OPT_SORT_KEYS)  # type: ignore[no-any-return]
+            dumps_option = orjson.OPT_SORT_KEYS
+
+        try:
+            return orjson.dumps(obj, option=dumps_option)
+        except TypeError as e:
+            if str(e) == 'Integer exceeds 64-bit range':
+                # use stdlib json below
+                pass
+            raise
 
     if debug:
         return json.dumps(obj, indent=2, sort_keys=True).encode("utf-8")