feat: use libCST's native parser

pyproject.toml

@@ -47,16 +47,16 @@ docs = [
 ]
 
 [tool.poetry.dev-dependencies]
-pytest = "^7.0"
 black = "^22.1"
-pytest-cov = "^3.0"
-pytest-mock = "^3.3"
-tox = "^3.20"
-parameterized = "^0.8.0"
 flake8 = "^4.0"
-pyupgrade = "^2.31"
 isort = "^5.10"
 mypy = "^0.942"
+parameterized = "^0.8.0"
+pytest = "^7.0"
+pytest-cov = "^3.0"
+pytest-mock = "^3.3"
+pyupgrade = "^2.31"
+tox = "^3.20"
 
 [tool.semantic_release]
 branch = "main"

src/django_codemod/cli.py

@@ -1,4 +1,5 @@
 import inspect
+import os
 from collections import defaultdict
 from operator import attrgetter
 from pathlib import Path
@@ -15,6 +16,8 @@
 from django_codemod.path_utils import get_sources
 from django_codemod.visitors.base import BaseDjCodemodTransformer
 
+os.environ["LIBCST_PARSER_TYPE"] = "native"
+
 
 def index_codemodders(version_getter: Callable) -> Dict[Tuple[int, int], List]:
     """

tests/test_cli.py

@@ -27,6 +27,12 @@ def command_instance():
     return BaseCodemodCommand([], CodemodContext())
 
 
+def test_use_native_parser():
+    from libcst._parser.entrypoints import is_native
+
+    assert is_native() is True
+
+
 def test_missing_argument(cli_runner):
     """Should explain missing arguments."""
     result = cli_runner.invoke(cli.djcodemod, ["run"])