diff --git a/mypy.ini b/mypy.ini
index deab2aeaee3..a7d4acea957 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -56,9 +56,6 @@ ignore_errors = True
 [mypy-torch.testing._internal.codegen.*]
 ignore_errors = True
 
-[mypy-torch.testing._internal.jit_utils.*]
-ignore_errors = True
-
 [mypy-torch.testing._internal.autocast_test_lists.*]
 ignore_errors = True
 
diff --git a/torch/_C/__init__.pyi.in b/torch/_C/__init__.pyi.in
index 29995760e00..0d48ea710fd 100644
--- a/torch/_C/__init__.pyi.in
+++ b/torch/_C/__init__.pyi.in
@@ -178,6 +178,10 @@ def _jit_get_trigger_value(trigger_name: str) -> _int: ...
 # Defined in torch/csrc/jit/python/script_init.cpp
 ResolutionCallback = Callable[[str], Callable[..., Any]]
 
+def _create_function_from_graph(qualname: str, graph: Graph) -> Graph: ...
+def _debug_set_autodiff_subgraph_inlining(disabled: _bool) -> None: ...
+def _ivalue_tags_match(lhs: ScriptModule, rhs: ScriptModule) -> _bool: ...
+def _jit_clear_class_registry() -> None: ...
 def _jit_set_emit_hooks(ModuleHook: Optional[Callable], FunctionHook: Optional[Callable]) -> None: ...
 def _jit_get_emit_hooks() -> Tuple[Callable, Callable]: ...
 def _load_for_lite_interpreter(filename: Union[str, Path], map_location: Union[_device, str, None]): ...
@@ -395,7 +399,9 @@ class AggregationType(Enum):
     AVG = 1
 
 class FileCheck(object):
-    # TODO
+    # TODO (add more FileCheck signature)
+    def check_source_highlighted(self, highlight: str) -> 'FileCheck': ...
+    def run(self, test_string: str) -> None: ...
     ...
 
 # Defined in torch/csrc/jit/python/init.cpp
@@ -416,6 +422,11 @@ class PyTorchFileWriter(object):
     def write_end_of_file(self) -> None: ...
     ...
 
+def _jit_get_inline_everything_mode() -> _bool: ...
+def _jit_set_inline_everything_mode(enabled: _bool) -> None: ...
+def _jit_pass_dce(Graph) -> None: ...
+def _jit_pass_lint(Graph) -> None: ...
+
 # Defined in torch/csrc/jit/python/python_custome_class.cpp
 def _get_custom_class_python_wrapper(name: str, attr: str) -> Any: ...
 
diff --git a/torch/testing/_internal/jit_utils.py b/torch/testing/_internal/jit_utils.py
index 542c182b036..732260573ec 100644
--- a/torch/testing/_internal/jit_utils.py
+++ b/torch/testing/_internal/jit_utils.py
@@ -24,6 +24,7 @@ from contextlib import contextmanager
 from functools import reduce
 from itertools import chain
 from torch._six import StringIO
+from typing import Any, Dict
 
 import inspect
 import io
@@ -148,14 +149,14 @@ class JitTestCase(TestCase):
             self.assertEqual(len(set(archive.namelist())), len(archive.namelist()))
             files = list(filter(lambda x: x.startswith('archive/code/'), archive.namelist()))
             # unwrap all the code files into strings
-            code_files = filter(lambda x: x.endswith('.py'), files)
-            code_files = map(lambda f: archive.open(f), code_files)
-            code_files = map(lambda file: "".join([line.decode() for line in file]), code_files)
+            code_files_str = filter(lambda x: x.endswith('.py'), files)
+            code_files_stream = map(lambda f: archive.open(f), code_files_str)
+            code_files = map(lambda file: "".join([line.decode() for line in file]), code_files_stream)
 
             # unpickled all the debug files
-            debug_files = filter(lambda f: f.endswith('.debug_pkl'), files)
-            debug_files = map(lambda f: archive.open(f), debug_files)
-            debug_files = map(lambda f: pickle.load(f), debug_files)
+            debug_files_str = filter(lambda f: f.endswith('.debug_pkl'), files)
+            debug_files_stream = map(lambda f: archive.open(f), debug_files_str)
+            debug_files = map(lambda f: pickle.load(f), debug_files_stream)
             return code_files, debug_files
 
         # disable the hook while we parse code, otherwise we will re-enter the hook
@@ -336,11 +337,15 @@ class JitTestCase(TestCase):
 
     def get_frame_vars(self, frames_up):
         frame = inspect.currentframe()
+        if not frame:
+            raise RuntimeError("failed to inspect frame")
         i = 0
         while i < frames_up + 1:
             frame = frame.f_back
+            if not frame:
+                raise RuntimeError("failed to get frame")
             i += 1
-        defined_vars = {}
+        defined_vars: Dict[str, Any] = {}
         defined_vars.update(frame.f_locals)
         defined_vars.update(frame.f_globals)
         return defined_vars
@@ -408,7 +413,7 @@ class JitTestCase(TestCase):
                     # outputs
 
                     frame = self.get_frame_vars(frames_up)
-                    the_locals = {}
+                    the_locals: Dict[str, Any] = {}
                     execWrapper(script, glob=frame, loc=the_locals)
                     frame.update(the_locals)