pre-commit: add prettier (#20)

.pre-commit-config.yaml

@@ -1,16 +1,21 @@
-minimum_pre_commit_version: '2.9.0'
+minimum_pre_commit_version: "2.9.0"
 repos:
-- repo: https://github.com/Zac-HD/shed
-  rev: 0.9.4
-  hooks:
-    - id: shed
-      # TODO(pcohen): bump to --py310-plus when Talon moves to Python 3.10.
-      args: [--refactor, --py39-plus]
-      types_or: [python, markdown, rst]
-- repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v4.1.0
-  hooks:
-    - id: end-of-file-fixer
-    - id: trailing-whitespace
-    - id: mixed-line-ending
-    - id: check-merge-conflict
+  - repo: https://github.com/Zac-HD/shed
+    rev: 0.9.4
+    hooks:
+      - id: shed
+        # TODO(pcohen): bump to --py310-plus when Talon moves to Python 3.10.
+        args: [--refactor, --py39-plus]
+        types_or: [python, markdown, rst]
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.1.0
+    hooks:
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
+      - id: mixed-line-ending
+      - id: check-merge-conflict
+  - repo: https://github.com/pre-commit/mirrors-prettier
+    rev: "v2.6.2"
+    hooks:
+      - id: prettier
+        files: ".*.(md|json|yaml)$"

README.md

@@ -1,4 +1,3 @@
-
 ```
 ░█████╗░██╗░░██╗██╗░░██╗██╗████████╗
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