Make typing hints work with Python 3.9 to 3.11

Change typing hints to allow static type checkers to work if client code
uses Python 3.9 to Python 3.11.

Background:

> The type statement is new in Python 3.12. For
> backwards compatibility, type aliases can also
> be created through simple assignment:

Link: https://docs.python.org/3/library/typing.html

Author: claui

dataclass_wizard/environ/lookups.pyi

@@ -5,9 +5,9 @@ from ..decorators import cached_class_property
 from ..type_def import StrCollection, EnvFileType
 
 
-type _MISSING_TYPE = type(MISSING)
-type STR_OR_MISSING = str | _MISSING_TYPE
-type STR_OR_NONE = str | None
+_MISSING_TYPE = type(MISSING)
+STR_OR_MISSING = str | _MISSING_TYPE
+STR_OR_NONE = str | None
 
 # Type of `os.environ` or `DotEnv` dict
 Environ = dict[str, STR_OR_NONE]

dataclass_wizard/utils/object_path.pyi

@@ -1,8 +1,8 @@
 from dataclasses import MISSING
 from typing import Any, Sequence
 
-type PathPart = str | int | float | bool
-type PathType = Sequence[PathPart]
+PathPart = str | int | float | bool
+PathType = Sequence[PathPart]
 
 
 def safe_get(data: dict | list,

dataclass_wizard/v1/models.pyi

@@ -15,7 +15,7 @@ from ..utils.object_path import PathType
 CatchAll = Mapping | None
 
 # Type for a string or a collection of strings.
-type _STR_COLLECTION = str | Collection[str]
+_STR_COLLECTION = str | Collection[str]
 
 
 @dataclass(order=True)

dataclass_wizard/wizard_mixins.pyi

@@ -17,7 +17,7 @@ from .type_def import (T, ListOfJSONObject,
 
 # A type that can be string or `path.Path`
 # https://stackoverflow.com/a/78070015/10237506
-type FileType = str | bytes | PathLike
+FileType = str | bytes | PathLike
 
 
 class JSONListWizard(JSONSerializable, str=False):