Set up pre-commit

.pre-commit-config.yaml

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+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+default_language_version:
+  python: python3.11
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v3.2.0
+    hooks:
+    # Generic
+    -   id: check-added-large-files
+    -   id: check-byte-order-marker
+    -   id: check-case-conflict
+    -   id: check-executables-have-shebangs
+    -   id: check-merge-conflict
+    -   id: check-symlinks
+    -   id: end-of-file-fixer
+    -   id: trailing-whitespace
+    # Python
+    -   id: check-ast
+    -   id: debug-statements
+    # Other languages
+    -   id: check-json
+    -   id: check-yaml
+    -   id: check-toml
+    -   id: check-xml
+
+-   repo: local
+    hooks:
+    -   id: typechecker
+        name: typechecker
+        description: 'Type-check the package'
+        entry: npm
+        language: system
+        pass_filenames: false
+        args: [run, check]