Tighten typing annotations

setup.cfg

@@ -55,6 +55,16 @@ addopts = --strict
 python_files = test_*.py
 testpaths = TEMPLATE/tests
 
+[coverage:report]
+show_missing = true
+exclude_lines =
+    pragma: nocover
+    pragma: no cover
+    TYPE_CHECKING
+    except ImportError
+    @overload
+    @(abc\.)?abstractmethod
+
 [flake8]
 # https://github.com/python/black#line-length
 max-line-length = 88
@@ -76,6 +86,16 @@ force_grid_wrap = 0
 use_parentheses = True
 line_length = 88
 
-# mypy: Ignore non-typed libraries
-[mypy-*]
-ignore_missing_imports = True
+[mypy]
+allow_incomplete_defs = false
+allow_untyped_decorators = false
+allow_untyped_defs = false
+ignore_missing_imports = true
+no_implicit_optional = true
+show_error_codes = true
+warn_redundant_casts = true
+warn_unused_ignores = true
+warn_unreachable = true
+
+[mypy-*.tests.*]
+allow_untyped_defs = true