chore: enable subset of the 'mypy --strict' options that work

Enable the subset of the 'mypy --strict' options that work with no
changes to the code.

1 files changed, 17 insertions, 1 deletions

diff --git a/pyproject.toml b/pyproject.toml
index 3e81169..8e9920e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,9 +4,25 @@ multi_line_output = 3
 order_by_type = false
 
 [tool.mypy]
+files = "."
+
+# 'strict = true' is equivalent to the following:
+check_untyped_defs = true
 disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_decorators = true
 disallow_untyped_defs = true
-files = "."
+warn_unused_configs = true
+warn_unused_ignores = true
+
+# The following need to have changes made to be able to enable them:
+# disallow_any_generics = true
+# disallow_untyped_calls = true
+# no_implicit_optional = true
+# no_implicit_reexport = true
+# strict_equality = true
+# warn_redundant_casts = true
+# warn_return_any = true
 
 [[tool.mypy.overrides]] # Overrides for currently untyped modules
 module = [