diff --git a/comtypes/tools/codegenerator/codegenerator.py b/comtypes/tools/codegenerator/codegenerator.py
index 53111d49..a3a0c899 100644
--- a/comtypes/tools/codegenerator/codegenerator.py
+++ b/comtypes/tools/codegenerator/codegenerator.py
@@ -7,7 +7,7 @@
 import os
 import textwrap
 import warnings
-from collections.abc import Iterator, Sequence
+from collections.abc import Iterable, Iterator, Mapping, Sequence
 from typing import Any, Literal, Optional
 from typing import Union as _UnionT
 
@@ -50,8 +50,8 @@ def __init__(self, known_symbols=None, known_interfaces=None) -> None:
         self.enums = namespaces.EnumerationNamespaces()
         self.unnamed_enum_members: list[tuple[str, int]] = []
         self._to_type_name = TypeNamer()
-        self.known_symbols = known_symbols or {}
-        self.known_interfaces = known_interfaces or {}
+        self.known_symbols: Mapping[str, str] = known_symbols or {}
+        self.known_interfaces: Mapping[str, str] = known_interfaces or {}
 
         self.done = set()  # type descriptions that have been generated
         self.names = set()  # names that have been generated
@@ -81,7 +81,7 @@ def adjust_blank(
         yield self.stream
         self.last_item = item
 
-    def generate(self, item):
+    def generate(self, item: Any) -> None:
         if item in self.done:
             return
         if self._is_interface_typedesc(item):
@@ -104,7 +104,7 @@ def generate(self, item):
         self.done.add(item)
         mth(item)
 
-    def generate_all(self, items):
+    def generate_all(self, items: Iterable[tlbparser.ParsedType]) -> None:
         for item in items:
             self.generate(item)
 
@@ -160,7 +160,7 @@ def _generate_typelib_path(self, filename):
             self.names.add("typelib_path")
 
     def generate_wrapper_code(
-        self, tdescs: Sequence[Any], filename: Optional[str]
+        self, tdescs: Sequence[tlbparser.ParsedType], filename: Optional[str]
     ) -> str:
         """Returns the code for the COM type library wrapper module.
 
diff --git a/comtypes/tools/tlbparser.py b/comtypes/tools/tlbparser.py
index 49d173ed..c4d9ce51 100644
--- a/comtypes/tools/tlbparser.py
+++ b/comtypes/tools/tlbparser.py
@@ -1,9 +1,11 @@
 import os
 import sys
 from _ctypes import COMError
+from collections.abc import Mapping
 from ctypes import alignment, c_void_p, sizeof, windll
 from ctypes.wintypes import MAX_PATH
 from typing import Any, Optional
+from typing import Union as _UnionT
 
 from comtypes import automation, typeinfo
 from comtypes.tools import typedesc
@@ -107,14 +109,35 @@ def midlSAFEARRAY(typ):
 # automation.VT_ARRAY = 8192
 # automation.VT_BYREF = 16384
 
+ParsedType = _UnionT[
+    typedesc.TypeLib,
+    typedesc.Constant,
+    typedesc.External,
+    typedesc.CoClass,
+    typedesc.ComInterface,
+    typedesc.DispInterface,
+    typedesc.Typedef,
+    typedesc.Structure,
+    typedesc.Union,
+    typedesc.Enumeration,
+]
+
+SpecType = _UnionT[
+    typedesc.FundamentalType,
+    typedesc.PointerType,
+    typedesc.ArrayType,
+    typedesc.SAFEARRAYType,
+]
 ################################################################
 
 
 class Parser:
     tlib: typeinfo.ITypeLib
-    items: dict[str, Any]
+    items: dict[str, ParsedType]
 
-    def make_type(self, tdesc: typeinfo.TYPEDESC, tinfo: typeinfo.ITypeInfo) -> Any:
+    def make_type(
+        self, tdesc: typeinfo.TYPEDESC, tinfo: typeinfo.ITypeInfo
+    ) -> _UnionT[ParsedType, SpecType]:
         if tdesc.vt in COMTYPES:
             return COMTYPES[tdesc.vt]
         if tdesc.vt == automation.VT_CARRAY:
@@ -587,7 +610,10 @@ def _typelib_module(self, tlib: Optional[typeinfo.ITypeLib] = None) -> str:
         return str(tlib.GetLibAttr())
 
     def _register(
-        self, name: Optional[str], value: Any, tlib: Optional[typeinfo.ITypeLib] = None
+        self,
+        name: Optional[str],
+        value: ParsedType,
+        tlib: Optional[typeinfo.ITypeLib] = None,
     ) -> None:
         modname = self._typelib_module(tlib)
         fullname = f"{modname}.{name}"
@@ -599,7 +625,7 @@ def _register(
             raise ValueError(f"Bug: Multiple registered name '{name}': {value!r}")
         self.items[fullname] = value
 
-    def parse_typeinfo(self, tinfo: typeinfo.ITypeInfo) -> Any:
+    def parse_typeinfo(self, tinfo: typeinfo.ITypeInfo) -> Optional[ParsedType]:
         name = tinfo.GetDocumentation(-1)[0]
         modname = self._typelib_module()
         try:
@@ -670,7 +696,7 @@ def parse_LibraryDescription(self):
 
     ################################################################
 
-    def parse(self):
+    def parse(self) -> Mapping[str, ParsedType]:
         self.parse_LibraryDescription()
 
         for i in range(self.tlib.GetTypeInfoCount()):
diff --git a/comtypes/tools/typedesc.py b/comtypes/tools/typedesc.py
index 755b6e02..302ff80a 100644
--- a/comtypes/tools/typedesc.py
+++ b/comtypes/tools/typedesc.py
@@ -7,7 +7,28 @@
 from typing import Union as _UnionT
 
 from comtypes import typeinfo
-from comtypes.tools.typedesc_base import *
+from comtypes.tools.typedesc_base import Alias as Alias
+from comtypes.tools.typedesc_base import Argument as Argument
+from comtypes.tools.typedesc_base import ArrayType as ArrayType
+from comtypes.tools.typedesc_base import Constructor as Constructor
+from comtypes.tools.typedesc_base import CvQualifiedType as CvQualifiedType
+from comtypes.tools.typedesc_base import Enumeration as Enumeration
+from comtypes.tools.typedesc_base import EnumValue as EnumValue
+from comtypes.tools.typedesc_base import Field as Field
+from comtypes.tools.typedesc_base import File as File
+from comtypes.tools.typedesc_base import Function as Function
+from comtypes.tools.typedesc_base import FunctionType as FunctionType
+from comtypes.tools.typedesc_base import FundamentalType as FundamentalType
+from comtypes.tools.typedesc_base import Macro as Macro
+from comtypes.tools.typedesc_base import Method as Method
+from comtypes.tools.typedesc_base import OperatorFunction as OperatorFunction
+from comtypes.tools.typedesc_base import PointerType as PointerType
+from comtypes.tools.typedesc_base import Structure as Structure
+from comtypes.tools.typedesc_base import StructureBody as StructureBody
+from comtypes.tools.typedesc_base import StructureHead as StructureHead
+from comtypes.tools.typedesc_base import Typedef as Typedef
+from comtypes.tools.typedesc_base import Union as Union
+from comtypes.tools.typedesc_base import Variable as Variable
 from comtypes.typeinfo import TLIBATTR, ITypeLib
 
 
diff --git a/comtypes/tools/typedesc_base.py b/comtypes/tools/typedesc_base.py
index 5b311077..fb9ba942 100644
--- a/comtypes/tools/typedesc_base.py
+++ b/comtypes/tools/typedesc_base.py
@@ -2,8 +2,6 @@
 from typing import Any, Optional, SupportsInt
 from typing import Union as _UnionT
 
-import comtypes
-
 
 class Argument:
     "a Parameter in the argument list of a callable (Function, Method, ...)"
@@ -110,11 +108,10 @@ def __init__(self, name, returns):
 class FundamentalType:
     location = None
 
-    def __init__(self, name, size, align):
+    def __init__(self, name: str, size: int, align: int) -> None:
         self.name = name
-        if name != "void":
-            self.size = int(size)
-            self.align = int(align)
+        self.size = int(size)
+        self.align = int(align)
 
 
 class PointerType:
diff --git a/pyproject.toml b/pyproject.toml
index dcec9bf7..e806166c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,8 +74,6 @@ ignore = ["E402"]
 "comtypes/server/inprocserver.py" = ["E722"]
 "comtypes/server/register.py" = ["E713"]
 "comtypes/tools/codegenerator/packing.py" = ["F821", "F841"]
-"comtypes/tools/typedesc.py" = ["F403", "F405"]
-"comtypes/tools/typedesc_base.py" = ["F401"]
 # gen directory
 "comtypes/gen/*" = ["E", "F", "I"]
 # stub