Add pre-commit-config

Author: jkimbo

.pre-commit-config.yaml

@@ -0,0 +1,37 @@
+repos:
+  - repo: https://github.com/PyCQA/flake8
+    rev: 3.9.2
+    hooks:
+      - id: flake8
+        additional_dependencies: ["flake8-eradicate==0.4.0"]
+
+  - repo: https://github.com/patrick91/pre-commit-alex
+    rev: aa5da9e54b92ab7284feddeaf52edf14b1690de3
+    hooks:
+      - id: alex
+        exclude: CHANGELOG.md
+
+  - repo: https://github.com/pre-commit/mirrors-prettier
+    rev: v2.3.2
+    hooks:
+      - id: prettier
+        files: '^docs/.*\.mdx?$'
+
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.0.1
+    hooks:
+      - id: trailing-whitespace
+      - id: check-merge-conflict
+      - id: end-of-file-fixer
+      - id: check-toml
+
+  - repo: https://github.com/humitos/mirrors-autoflake.git
+    rev: v1.1
+    hooks:
+      - id: autoflake
+        args: ['--in-place', '--remove-all-unused-imports', '--remove-unused-variable']
+
+  - repo: https://github.com/psf/black
+    rev: 21.8b0
+    hooks:
+      - id: black